{"id":72634,"date":"2013-05-20T11:24:37","date_gmt":"2013-05-20T03:24:37","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/piezoceramics-faqs\/"},"modified":"2026-03-12T09:33:41","modified_gmt":"2026-03-12T14:33:41","slug":"piezoceramics-faqs","status":"publish","type":"page","link":"https:\/\/www.bjultrasonic.com\/cs\/piezoceramics-faqs\/","title":{"rendered":"\u010casto kladen\u00e9 ot\u00e1zky o piezokeramice"},"content":{"rendered":"<p><a href=\"https:\/\/www.bjultrasonic.com\/cs\/category\/piezoelectric-ceramic-cs\/\">Piezokeramika<\/a>, tak\u00e9 zn\u00e1m\u00e1 jako piezoelektrick\u00e1 keramika, je t\u0159\u00edda funk\u010dn\u00edch materi\u00e1l\u016f, kter\u00e9 vykazuj\u00ed piezoelektrick\u00fd jev. To znamen\u00e1, \u017ee mohou generovat elektrick\u00fd n\u00e1boj p\u0159i vystaven\u00ed mechanick\u00e9mu nam\u00e1h\u00e1n\u00ed (p\u0159\u00edm\u00fd piezoelektrick\u00fd jev), a naopak se mohou deformovat p\u0159i aplikaci elektrick\u00e9ho pole (inverzn\u00ed piezoelektrick\u00fd jev). Tyto unik\u00e1tn\u00ed vlastnosti vedly k jejich \u0161irok\u00e9mu vyu\u017eit\u00ed v r\u016fzn\u00fdch aplikac\u00edch, od senzor\u016f a aktu\u00e1tor\u016f po m\u011bni\u010de a za\u0159\u00edzen\u00ed pro z\u00edsk\u00e1v\u00e1n\u00ed energie. Porozum\u011bn\u00ed piezokeramice je nezbytn\u00e9 pro ka\u017ed\u00e9ho, kdo pracuje v t\u011bchto oblastech. Tento \u010dl\u00e1nek si klade za c\u00edl zodpov\u011bd\u011bt n\u011bkter\u00e9 z nej\u010dast\u011bji kladen\u00fdch ot\u00e1zek o piezokeramice.<\/p>\n<h3>1. Co p\u0159esn\u011b je piezokeramika?<\/h3>\n<p>Piezokeramika jsou polykrystalick\u00e9 keramick\u00e9 materi\u00e1ly, kter\u00e9 maj\u00ed specifickou krystalovou strukturu umo\u017e\u0148uj\u00edc\u00ed jim vykazovat piezoelektrick\u00fd jev. Na rozd\u00edl od monokrystal\u016f, kter\u00e9 mohou b\u00fdt drah\u00e9 a obt\u00ed\u017en\u011b vyrobiteln\u00e9, lze piezokeramiku vyr\u00e1b\u011bt v r\u016fzn\u00fdch tvarech a velikostech, co\u017e ji \u010din\u00ed v\u0161estrann\u011bj\u0161\u00ed pro pr\u016fmyslov\u00e9 aplikace. Nejb\u011b\u017en\u011bj\u0161\u00ed piezokeramika je zalo\u017eena na olovnat\u00e9m zirkoni\u010ditanu titani\u010dit\u00e9m (PZT), i kdy\u017e se st\u00e1le v\u00edce vyv\u00edjej\u00ed alternativy bez olova kv\u016fli environment\u00e1ln\u00edm obav\u00e1m. Tyto materi\u00e1ly maj\u00ed schopnost p\u0159em\u011b\u0148ovat mechanickou energii na elektrickou a naopak, co\u017e z nich \u010din\u00ed kl\u00ed\u010dovou sou\u010d\u00e1st r\u016fzn\u00fdch modern\u00edch technologi\u00ed.<\/p>\n<h3>2. Jak piezokeramika funguje?<\/h3>\n<p>Funk\u010dnost piezokeramiky vych\u00e1z\u00ed z jej\u00ed unik\u00e1tn\u00ed krystalov\u00e9 struktury, kter\u00e1 je typicky perovskitov\u00e1. Ve sv\u00e9m p\u0159irozen\u00e9m stavu maj\u00ed tyto krystaly n\u00e1hodn\u011b orientovan\u00e9 elektrick\u00e9 dip\u00f3ly, tak\u017ee nevykazuj\u00ed \u017e\u00e1dn\u00fd v\u00fdznamn\u00fd piezoelektrick\u00fd jev. B\u011bhem procesu zvan\u00e9ho &#8222;polarizace&#8220; je v\u0161ak materi\u00e1l vystaven siln\u00e9mu elektrick\u00e9mu poli za zv\u00fd\u0161en\u00e9 teploty, co\u017e zp\u016fsob\u00ed, \u017ee se tyto dip\u00f3ly srovnaj\u00ed. Po ochlazen\u00ed je toto uspo\u0159\u00e1d\u00e1n\u00ed zachov\u00e1no. Kdy\u017e je na polarizovanou piezokeramiku aplikov\u00e1no mechanick\u00e9 nam\u00e1h\u00e1n\u00ed, krystalov\u00e1 struktura se deformuje, zm\u011bn\u00ed se uspo\u0159\u00e1d\u00e1n\u00ed dip\u00f3l\u016f a dojde ke generov\u00e1n\u00ed elektrick\u00e9ho n\u00e1boje. Naopak, kdy\u017e je aplikov\u00e1no elektrick\u00e9 pole, p\u016fsob\u00ed silami na dip\u00f3ly, zp\u016fsobuje jejich pohyb a vede k fyzick\u00e9 deformaci keramiky.<\/p>\n<p><a href=\"https:\/\/www.bjultrasonic.com\/cs\/category\/piezoelectric-ceramic-cs\/\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-23778\" src=\"https:\/\/www.bjultrasonic.com\/wp-content\/uploads\/2012\/04\/32115-Piezoceramic-Ring.jpg\" alt=\"32*11*5 Piezoceramic Ring\" width=\"700\" height=\"700\" srcset=\"https:\/\/www.bjultrasonic.com\/wp-content\/uploads\/2012\/04\/32115-Piezoceramic-Ring.jpg 700w, https:\/\/www.bjultrasonic.com\/wp-content\/uploads\/2012\/04\/32115-Piezoceramic-Ring-600x600.jpg 600w, https:\/\/www.bjultrasonic.com\/wp-content\/uploads\/2012\/04\/32115-Piezoceramic-Ring-100x100.jpg 100w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/a><\/p>\n<h3>3. Jak\u00e9 jsou kl\u00ed\u010dov\u00e9 vlastnosti piezokeramiky?<\/h3>\n<p>V\u00fdkon piezokeramiky charakterizuje n\u011bkolik kl\u00ed\u010dov\u00fdch vlastnost\u00ed. Pochopen\u00ed t\u011bchto vlastnost\u00ed je z\u00e1sadn\u00ed pro v\u00fdb\u011br vhodn\u00e9ho materi\u00e1lu pro danou aplikaci. Mezi hlavn\u00ed vlastnosti pat\u0159\u00ed:<\/p>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th align=\"left\">Vlastnost<\/th>\n<th align=\"left\">Popis<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td align=\"left\">Piezoelektrick\u00fd koeficient<\/td>\n<td align=\"left\">Mno\u017estv\u00ed elektrick\u00e9ho n\u00e1boje generovan\u00e9ho na jednotku nap\u011bt\u00ed (konstanta d) nebo mno\u017estv\u00ed deformace vyvolan\u00e9 na jednotku elektrick\u00e9ho pole (konstanta g). Vy\u0161\u0161\u00ed hodnoty znamenaj\u00ed lep\u0161\u00ed v\u00fdkon.<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">Dielektrick\u00e1 konstanta<\/td>\n<td align=\"left\">Ud\u00e1v\u00e1 schopnost materi\u00e1lu uchov\u00e1vat elektrickou energii. Vysok\u00e1 dielektrick\u00e1 konstanta je \u010dasto \u017e\u00e1douc\u00ed.<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">Curieho teplota<\/td>\n<td align=\"left\">Teplota, p\u0159i kter\u00e9 materi\u00e1l ztr\u00e1c\u00ed sv\u00e9 piezoelektrick\u00e9 vlastnosti. Provozn\u00ed teploty by m\u011bly b\u00fdt v\u00fdrazn\u011b pod touto hodnotou.<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">Mechanick\u00fd kvalitativn\u00ed faktor<\/td>\n<td align=\"left\">Popisuje \u00fa\u010dinnost materi\u00e1lu p\u0159i p\u0159em\u011bn\u011b energie, vy\u0161\u0161\u00ed Q znamen\u00e1 ni\u017e\u0161\u00ed ztr\u00e1tu energie b\u011bhem vibrac\u00ed.<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">Spojovac\u00ed faktor<\/td>\n<td align=\"left\">P\u0159edstavuje \u00fa\u010dinnost elektromechanick\u00e9 p\u0159em\u011bny energie. Vy\u0161\u0161\u00ed hodnoty znamenaj\u00ed lep\u0161\u00ed \u00fa\u010dinnost p\u0159em\u011bny.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>4. Jak\u00e9 jsou b\u011b\u017en\u00e9 aplikace piezokeramiky?<\/h3>\n<p>Piezokeramika na\u0161la \u0161irokou \u0161k\u00e1lu aplikac\u00ed d\u00edky sv\u00e9 schopnosti p\u0159em\u011b\u0148ovat mechanickou a elektrickou energii. Mezi v\u00fdznamn\u00e1 pou\u017eit\u00ed pat\u0159\u00ed:<\/p>\n<ul>\n<li><strong>Senzory:<\/strong> Detekce tlaku, s\u00edly, zrychlen\u00ed a vibrac\u00ed v r\u016fzn\u00fdch aplikac\u00edch, jako je l\u00e9ka\u0159sk\u00e9 vybaven\u00ed, automobilov\u00e9 senzory a monitorov\u00e1n\u00ed stavu konstrukc\u00ed.<\/li>\n<li><strong>Aktu\u00e1tory:<\/strong> Precizn\u00ed \u0159\u00edzen\u00ed pohybu, polohov\u00e1n\u00ed a posunu v aplikac\u00edch, jako jsou inkoustov\u00e9 tisk\u00e1rny, vst\u0159ikova\u010de paliva a mikrorobotika.<\/li>\n<li><strong>M\u011bni\u010de (transducery):<\/strong> P\u0159em\u011bna elektrick\u00fdch sign\u00e1l\u016f na mechanick\u00e9 vibrace pro ultrazvukov\u00e9 \u010di\u0161t\u011bn\u00ed, sva\u0159ov\u00e1n\u00ed a nedestruktivn\u00ed zkou\u0161en\u00ed. Nap\u0159\u00edklad spole\u010dnost Beijing Ultrasonic vyu\u017e\u00edv\u00e1 pro sv\u00e9 <a href=\"https:\/\/www.bjultrasonic.com\/cs\/category\/ultrasonic-transducer-cs\/\">m\u011bni\u010de<\/a> vysoce kvalitn\u00ed PZT, aby zajistila optim\u00e1ln\u00ed v\u00fdkon sv\u00e9ho <a href=\"https:\/\/www.bjultrasonic.com\/cs\/category\/ultrasonic-cleaning-system-cs\/\">ultrazvukov\u00e9ho \u010distic\u00edho za\u0159\u00edzen\u00ed<\/a>.<\/li>\n<li><strong>Z\u00edsk\u00e1v\u00e1n\u00ed energie (Energy Harvesting):<\/strong> P\u0159em\u011bna mechanick\u00e9 energie (jako jsou vibrace nebo pohyb \u010dlov\u011bka) na elektrickou energii pro nap\u00e1jen\u00ed mal\u00fdch za\u0159\u00edzen\u00ed.<\/li>\n<li><strong>L\u00e9ka\u0159sk\u00e9 zobrazov\u00e1n\u00ed:<\/strong> Pou\u017eit\u00ed v ultrazvukov\u00fdch sond\u00e1ch pro vytv\u00e1\u0159en\u00ed obraz\u016f vnit\u0159n\u00edch org\u00e1n\u016f a tk\u00e1n\u00ed.<\/li>\n<li><strong>Zvukov\u00e1 za\u0159\u00edzen\u00ed:<\/strong> Pou\u017eit\u00ed v reproduktorech, mikrofonech a bzu\u010d\u00e1c\u00edch.<\/li>\n<\/ul>\n<h3>5. Jak\u00e9 jsou v\u00fdhody pou\u017e\u00edv\u00e1n\u00ed piezokeramiky?<\/h3>\n<p>\u0160irok\u00e9 p\u0159ijet\u00ed piezokeramiky je v\u00fdsledkem jej\u00edch \u010detn\u00fdch v\u00fdhod:<\/p>\n<ul>\n<li><strong>Vysok\u00e1 citlivost:<\/strong> Jsou vysoce citliv\u00e9 i na mal\u00e9 zm\u011bny mechanick\u00e9ho nap\u011bt\u00ed nebo elektrick\u00e9ho pole.<\/li>\n<li><strong>Kr\u00e1tk\u00e1 doba odezvy:<\/strong> Dok\u00e1\u017eou rychle reagovat na p\u016fsob\u00edc\u00ed nap\u011bt\u00ed nebo elektrick\u00e1 pole.<\/li>\n<li><strong>Vysok\u00e1 mechanick\u00e1 pevnost a tuhost:<\/strong> Mohou sn\u00e1\u0161et zna\u010dn\u00e9 mechanick\u00e9 nam\u00e1h\u00e1n\u00ed.<\/li>\n<li><strong>\u0160irok\u00fd rozsah provozn\u00edch teplot:<\/strong> N\u011bkter\u00e9 formulace jsou navr\u017eeny pro pr\u00e1ci p\u0159i extr\u00e9mn\u00edch teplot\u00e1ch.<\/li>\n<li><strong>R\u016fzn\u00e9 tvary a velikosti:<\/strong> Lze je vyr\u00e1b\u011bt v r\u016fzn\u00fdch form\u00e1ch pro r\u016fzn\u00e9 aplikace.<\/li>\n<li><strong>\u0160k\u00e1lovatelnost:<\/strong> Snadn\u00e1 hromadn\u00e1 v\u00fdroba, co\u017e je cenov\u011b v\u00fdhodn\u00e9 pro rozs\u00e1hl\u00e9 pou\u017eit\u00ed.<\/li>\n<\/ul>\n<h3>6. Jak\u00e9 jsou nev\u00fdhody pou\u017e\u00edv\u00e1n\u00ed piezokeramiky?<\/h3>\n<p>Navzdory sv\u00fdm v\u00fdhod\u00e1m maj\u00ed piezokeramiky tak\u00e9 n\u011bkter\u00e9 nev\u00fdhody:<\/p>\n<ul>\n<li><strong>K\u0159ehkost:<\/strong> Jsou to keramick\u00e9 materi\u00e1ly a jsou n\u00e1chyln\u00e9 k prask\u00e1n\u00ed pod mechanick\u00fdm nam\u00e1h\u00e1n\u00edm.<\/li>\n<li><strong>Omezen\u00e1 deformace:<\/strong> Piezokeramiky mohou dos\u00e1hnout pouze mal\u00fdch posun\u016f, tak\u017ee nemus\u00ed b\u00fdt vhodn\u00e9 pro velk\u00e9 pohyby.<\/li>\n<li><strong>Teplotn\u00ed citlivost:<\/strong> Jejich v\u00fdkonnost se m\u016f\u017ee zhor\u0161ovat p\u0159i vysok\u00fdch teplot\u00e1ch kv\u016fli bl\u00edzkosti Curieovy teploty.<\/li>\n<li><strong>Hystereze:<\/strong> Vykazuj\u00ed ur\u010ditou hysterezi, co\u017e m\u016f\u017ee v\u00e9st k nep\u0159esnostem v \u0159\u00edzen\u00ed posuvu.<\/li>\n<li><strong>Obsah olova:<\/strong> Tradi\u010dn\u00ed PZT keramika obsahuje olovo, kter\u00e9 p\u0159edstavuje environment\u00e1ln\u00ed rizika. To vedlo k v\u00fdzkumu bezolovnat\u00fdch alternativ.<\/li>\n<\/ul>\n<h3>7. Jak\u00e9 jsou bezolovnat\u00e9 alternativy k PZT keramice?<\/h3>\n<p>Obavy z toxicity olova v PZT podn\u00edtily v\u00fdvoj bezolovnat\u00fdch piezokeramik. Mezi nejslibn\u011bj\u0161\u00ed alternativy pat\u0159\u00ed:<\/p>\n<ul>\n<li><strong>Barium Titan\u00e1t (BaTiO3):<\/strong> Jedna z prvn\u00edch objeven\u00fdch piezoelektrick\u00fdch keramik, ale m\u00e1 ni\u017e\u0161\u00ed piezoelektrick\u00e9 vlastnosti ne\u017e PZT.<\/li>\n<li><strong>Draseln\u00fd Niobi\u010dnan (KNbO3):<\/strong> Vykazuje dobr\u00e9 piezoelektrick\u00e9 vlastnosti, ale je n\u00e1ro\u010dn\u00fd na synt\u00e9zu.<\/li>\n<li><strong>Sodn\u00fd Niobi\u010dnan (NaNbO3):<\/strong> Relativn\u011b nov\u00e1 alternativa se zlep\u0161en\u00fdm v\u00fdkonem.<\/li>\n<li><strong>Bismutit\u00fd Ferit (BiFeO3):<\/strong> Ukazuje slibn\u00e9 multiferroick\u00e9 vlastnosti, co\u017e m\u016f\u017ee b\u00fdt v n\u011bkter\u00fdch aplikac\u00edch v\u00fdhodn\u00e9.<\/li>\n<\/ul>\n<p>V\u00fdvoj t\u011bchto materi\u00e1l\u016f neust\u00e1le pokra\u010duje a neust\u00e1le se zkoumaj\u00ed nov\u00e9 bezolovnat\u00e9 piezokeramiky s vylep\u0161en\u00fdmi vlastnostmi.<\/p>\n<h3>8. Jak se piezokeramika vyr\u00e1b\u00ed?<\/h3>\n<p>V\u00fdrobn\u00ed proces piezokeramiky zahrnuje n\u011bkolik kl\u00ed\u010dov\u00fdch krok\u016f:<\/p>\n<ol>\n<li><strong>Synt\u00e9za pr\u00e1\u0161ku:<\/strong> Suroviny jako oxidy a uhli\u010ditany se sm\u00edchaj\u00ed a kalcinuj\u00ed p\u0159i vysok\u00fdch teplot\u00e1ch za vzniku po\u017eadovan\u00e9ho keramick\u00e9ho pr\u00e1\u0161ku.<\/li>\n<li><strong>Tvarov\u00e1n\u00ed:<\/strong> Pr\u00e1\u0161ek se sm\u00edch\u00e1 s pojivy a lisuje se do po\u017eadovan\u00e9ho tvaru pomoc\u00ed r\u016fzn\u00fdch metod, jako je lisov\u00e1n\u00ed do forem nebo vytla\u010dov\u00e1n\u00ed.<\/li>\n<li><strong>Sl\u00edn\u00e1n\u00ed:<\/strong> Tvarovan\u00e1 keramika se zah\u0159\u00edv\u00e1 p\u0159i vysok\u00fdch teplot\u00e1ch, aby se zhutnil materi\u00e1l a zv\u00fd\u0161ila jeho mechanick\u00e1 pevnost.<\/li>\n<li><strong>P\u00f3lov\u00e1n\u00ed:<\/strong> Sl\u00ednan\u00fd materi\u00e1l je p\u0159i zv\u00fd\u0161en\u00e9 teplot\u011b vystaven siln\u00e9mu elektrick\u00e9mu poli, aby se srovnaly dip\u00f3ly a indukovaly piezoelektrick\u00e9 vlastnosti.<\/li>\n<li><strong>Nan\u00e1\u0161en\u00ed elektrod:<\/strong> Na povrch keramiky se nanesou elektrody, aby bylo mo\u017en\u00e9 aplikovat elektrick\u00e1 pole a detekovat n\u00e1boj.<\/li>\n<\/ol>\n<h3>9. Jak vybrat spr\u00e1vnou piezokeramiku pro mou aplikaci?<\/h3>\n<p>V\u00fdb\u011br vhodn\u00e9 piezokeramiky pro konkr\u00e9tn\u00ed aplikaci vy\u017eaduje pe\u010dliv\u00e9 zv\u00e1\u017een\u00ed n\u011bkolika faktor\u016f:<\/p>\n<ul>\n<li><strong>Provozn\u00ed podm\u00ednky:<\/strong> Kl\u00ed\u010dov\u00fdmi aspekty jsou teplota, pracovn\u00ed frekvence a \u00farove\u0148 nap\u011bt\u00ed.<\/li>\n<li><strong>Po\u017eadovan\u00e9 vlastnosti:<\/strong> Piezoelektrick\u00fd koeficient, dielektrick\u00e1 konstanta a vazebn\u00ed faktor by m\u011bly odpov\u00eddat po\u017eadavk\u016fm aplikace.<\/li>\n<li><strong>Po\u017eadavky na velikost a tvar:<\/strong> Velikost a tvar za\u0159\u00edzen\u00ed ur\u010d\u00ed rozm\u011bry piezokeramiky.<\/li>\n<li><strong>Rozpo\u010det:<\/strong> R\u016fzn\u00e9 materi\u00e1ly maj\u00ed r\u016fzn\u00e9 v\u00fdrobn\u00ed n\u00e1klady, kter\u00e9 je t\u0159eba zohlednit.<\/li>\n<li><strong>Environment\u00e1ln\u00ed po\u017eadavky:<\/strong> Pokud je d\u016fle\u017eit\u00fd dopad na \u017eivotn\u00ed prost\u0159ed\u00ed, m\u011bly by se zv\u00e1\u017eit bezolovnat\u00e9 varianty.<\/li>\n<\/ul>\n<p>Konzultace s odborn\u00edkem na materi\u00e1ly a testov\u00e1n\u00ed r\u016fzn\u00fdch materi\u00e1l\u016f m\u016f\u017ee zajistit nejlep\u0161\u00ed v\u00fdkon a \u017eivotnost pro va\u0161i konkr\u00e9tn\u00ed aplikaci.<\/p>\n<h3>10. Jak\u00e9 jsou n\u011bkter\u00e9 nejnov\u011bj\u0161\u00ed pokroky ve v\u00fdzkumu piezokeramiky?<\/h3>\n<p>Obor piezokeramiky se neust\u00e1le vyv\u00edj\u00ed a prob\u00edhaj\u00edc\u00ed v\u00fdzkum se zam\u011b\u0159uje na:<\/p>\n<ul>\n<li><strong>V\u00fdvoj nov\u00fdch bezolovnat\u00fdch materi\u00e1l\u016f:<\/strong> Zkoum\u00e1n\u00ed nov\u00fdch slo\u017een\u00ed a technologi\u00ed zpracov\u00e1n\u00ed pro zlep\u0161en\u00ed vlastnost\u00ed bezolovnat\u00fdch piezokeramik.<\/li>\n<li><strong>Zlep\u0161ov\u00e1n\u00ed piezoelektrick\u00fdch vlastnost\u00ed:<\/strong> Zvy\u0161ov\u00e1n\u00ed piezoelektrick\u00fdch koeficient\u016f, vazebn\u00edch faktor\u016f a mechanick\u00fdch kvalitativn\u00edch faktor\u016f st\u00e1vaj\u00edc\u00edch materi\u00e1l\u016f.<\/li>\n<li><strong>Vytv\u00e1\u0159en\u00ed piezokeramiky v nanom\u011b\u0159\u00edtku:<\/strong> V\u00fdroba piezokeramick\u00fdch struktur v nanom\u011b\u0159\u00edtku pro aplikace v mikro-elektromechanick\u00fdch syst\u00e9mech (MEMS) a nanza\u0159\u00edzen\u00edch.<\/li>\n<li><strong>V\u00edcevrstv\u00e9 a kompozitn\u00ed struktury:<\/strong> Navrhov\u00e1n\u00ed nov\u00fdch v\u00edcevrstv\u00fdch struktur pro lep\u0161\u00ed v\u00fdkon aktu\u00e1tor\u016f a zkoum\u00e1n\u00ed keramicko-polymern\u00edch kompozitn\u00edch materi\u00e1l\u016f pro zv\u00fd\u0161enou flexibilitu.<\/li>\n<li><strong>Aplikace pro z\u00edsk\u00e1v\u00e1n\u00ed energie:<\/strong> V\u00fdvoj \u00fa\u010dinn\u011bj\u0161\u00edch a odoln\u011bj\u0161\u00edch materi\u00e1l\u016f pro p\u0159em\u011bnu okoln\u00edch vibrac\u00ed a mechanick\u00e9 energie na elektrickou energii.<\/li>\n<\/ul>\n<p>Z\u00e1v\u011brem lze \u0159\u00edci, \u017ee piezokeramika jsou d\u00edky sv\u00fdm v\u00fdjime\u010dn\u00fdm piezoelektrick\u00fdm vlastnostem nepostradateln\u00fdmi materi\u00e1ly v r\u016fzn\u00fdch odv\u011btv\u00edch. I kdy\u017e se tradi\u010dn\u00ed materi\u00e1ly PZT \u0161iroce pou\u017e\u00edvaj\u00ed, snaha o bezolovnat\u00e9 alternativy st\u00e1le poh\u00e1n\u00ed inovace v tomto oboru. Porozum\u011bn\u00ed jejich vlastnostem, v\u00fdhod\u00e1m, omezen\u00edm a nejnov\u011bj\u0161\u00edm v\u00fdzkumn\u00fdm trend\u016fm je kl\u00ed\u010dov\u00e9 pro efektivn\u00ed vyu\u017eit\u00ed t\u011bchto univerz\u00e1ln\u00edch materi\u00e1l\u016f v \u0161irok\u00e9 \u0161k\u00e1le technologick\u00fdch aplikac\u00ed. A\u0165 u\u017e jde o p\u0159esn\u00e1 m\u011b\u0159en\u00ed senzor\u016f, p\u0159esn\u00e9 \u0159\u00edzen\u00ed aktu\u00e1tor\u016f nebo efektivn\u00ed z\u00edsk\u00e1v\u00e1n\u00ed energie, piezokeramika z\u016fstane v \u010dele materi\u00e1lov\u00e9 v\u011bdy a in\u017een\u00fdrstv\u00ed.<\/p>\n<ul class=\"sitemap\">\n<li><a href=\"https:\/\/www.bjultrasonic.com\/cs\/the-frequency-limit-of-a-piezoceramic-sheet-and-some-properties\/\"> Frekven\u010dn\u00ed limit piezokeramick\u00e9ho pl\u00e1tku<\/a><\/li>\n<li><a href=\"https:\/\/www.bjultrasonic.com\/cs\/piezo-ceramics-reason-to-the-existence-of-piezoelectricity\/\"> Jak funguje piezoelekt\u0159ina<\/a><\/li>\n<li><a href=\"https:\/\/www.bjultrasonic.com\/cs\/what-is-the-process-of-bonding-wires-to-piezoceramic-surface\/\"> Jak p\u0159ip\u00e1jet vodi\u010de k povrchu piezokeramiky<\/a><\/li>\n<li><a href=\"https:\/\/www.bjultrasonic.com\/cs\/the-possibility-of-using-piezoceramic-sheet-in-strain-gage\/\"> Lze piezokeramick\u00fd pl\u00e1tek pou\u017e\u00edt jako tenzometr<\/a><\/li>\n<li><a href=\"https:\/\/www.bjultrasonic.com\/cs\/is-there-any-truth-to-piezoceramic-sheets-being-really-fragile\/\"> Jsou piezokeramick\u00e9 pl\u00e1tky k\u0159ehk\u00e9<\/a><\/li>\n<li><a href=\"https:\/\/www.bjultrasonic.com\/cs\/is-there-any-truth-to-piezoceramic-sheet-picking-up-vibrations-in-machinery\/\"> Lze piezokeramick\u00fd pl\u00e1tek pou\u017e\u00edt k sn\u00edm\u00e1n\u00ed vibrac\u00ed v stroj\u00edch<\/a><\/li>\n<li><a href=\"https:\/\/www.bjultrasonic.com\/cs\/what-is-the-process-of-accessing-the-center-shim\/\"> Jak z\u00edskat p\u0159\u00edstup ke st\u0159edov\u00e9 v\u00fdplni piezokeramick\u00e9 sou\u010d\u00e1stky<\/a><\/li>\n<li><a href=\"https:\/\/www.bjultrasonic.com\/cs\/are-the-voltage-outputs-from-piezo-strain-gage-repeatable\/\"> Jsou v\u00fdstupn\u00ed nap\u011bt\u00ed z piezoelektrick\u00e9ho tenzometru opakovateln\u00e1<\/a><\/li>\n<li><a href=\"https:\/\/www.bjultrasonic.com\/cs\/what-is-the-typical-amount-of-electrical-power-that-can-be-extracted-from-a-piezo-bender-element\/\"> Mno\u017estv\u00ed elektrick\u00e9 energie, kter\u00e9 lze z\u00edskat z piezoelektrick\u00e9ho ohybov\u00e9ho prvku<\/a><\/li>\n<li><a href=\"https:\/\/www.bjultrasonic.com\/cs\/what-is-a-spice-model-and-is-it-available-for-piezo-sensors\/\"> Co je SPICE model a je k dispozici pro piezosenzory<\/a><\/li>\n<li><a href=\"https:\/\/www.bjultrasonic.com\/cs\/the-removal-of-the-electrode\/\"> Jak odstranit elektrodu z piezokeramiky<\/a><\/li>\n<li><a href=\"https:\/\/www.bjultrasonic.com\/cs\/piezo-ceramics-how-to-define-an-electric-field\/\"> Piezokeramika \u2013 Jak definovat elektrick\u00e9 pole<\/a><\/li>\n<li><a href=\"https:\/\/www.bjultrasonic.com\/cs\/is-there-any-truth-to-piezo-transducers-being-used-as-static-and-dynamic-force-sensors\/\"> Lze piezoelektrick\u00e9 m\u011bni\u010de pou\u017e\u00edt jako statick\u00e9 a dynamick\u00e9 silov\u00e9 senzory<\/a><\/li>\n<li><a href=\"https:\/\/www.bjultrasonic.com\/cs\/piezo-ceramics-how-to-define-strain\/\"> Piezokeramika \u2013 Jak definovat deformaci<\/a><\/li>\n<li><a href=\"https:\/\/www.bjultrasonic.com\/cs\/after-a-sheet-loses-its-abilities-can-it-berepoled\/\"> Lze piezokeramick\u00fd pl\u00e1tek po ztr\u00e1t\u011b vlastnost\u00ed znovu polarizovat<\/a><\/li>\n<li><a href=\"https:\/\/www.bjultrasonic.com\/cs\/is-there-a-possibility-of-piezo-technology-replacing-magnetic-technology-anytime-in-the-future\/\"> Nahrad\u00ed piezotechnologie magnetickou technologii<\/a><\/li>\n<li><a href=\"https:\/\/www.bjultrasonic.com\/cs\/how-can-poling-and-depoling-in-piezoceramic-materials\/\"> Polarizace a depolarizace v piezokeramick\u00fdch materi\u00e1lech<\/a><\/li>\n<li><a href=\"https:\/\/www.bjultrasonic.com\/cs\/is-there-one-resonant-frequency-from-a-piezoceramic-sheet\/\"> M\u00e1 piezokeramick\u00fd pl\u00e1tek jednu rezonan\u010dn\u00ed frekvenci<\/a><\/li>\n<li><a href=\"https:\/\/www.bjultrasonic.com\/cs\/what-is-the-amount-of-mechanical-power-that-can-be-acquired-from-one-sheet\/\"> Mno\u017estv\u00ed mechanick\u00e9 energie, kterou lze z\u00edskat z jednoho piezokeramick\u00e9ho pl\u00e1tku<\/a><\/li>\n<li><a href=\"https:\/\/www.bjultrasonic.com\/cs\/what-is-the-process-of-bonding-piezoceramic-to-different-structures\/\"> Jak\u00fd je proces lepen\u00ed piezokeramiky na r\u016fzn\u00e9 struktury<\/a><\/li>\n<li><a href=\"https:\/\/www.bjultrasonic.com\/cs\/piezo-ceramics-how-to-explain-thepyroelectric-effect\/\"> Piezokeramika \u2013 Jak vysv\u011btlit pyroelektrick\u00fd jev<\/a><\/li>\n<li><a href=\"https:\/\/www.bjultrasonic.com\/cs\/what-is-the-distance-a-sheet-can-stretch-before-it-completely-breaks\/\"> Vzd\u00e1lenost, o kterou se m\u016f\u017ee piezokeramick\u00fd pl\u00e1tek nat\u00e1hnout, ne\u017e se \u00fapln\u011b rozbije<\/a><\/li>\n<li><a href=\"https:\/\/www.bjultrasonic.com\/cs\/are-piezo-devices-used-in-everyday-objects\/\"> Pou\u017e\u00edvaj\u00ed se piezoelektrick\u00e1 za\u0159\u00edzen\u00ed v ka\u017edodenn\u00edch p\u0159edm\u011btech<\/a><\/li>\n<li><a href=\"https:\/\/www.bjultrasonic.com\/cs\/what-is-the-process-of-attaching-a-bender-element\/\"> Jak p\u0159ipevnit piezoelektrick\u00fd ohybov\u00fd prvek<\/a><\/li>\n<li><a href=\"https:\/\/www.bjultrasonic.com\/cs\/will-superglue-do-the-trick\/\"> Piezokeramika \u2013 Poslou\u017e\u00ed superlepidlo<\/a><\/li>\n<li><a href=\"https:\/\/www.bjultrasonic.com\/cs\/what-is-the-exact-amount-of-power-that-can-derived-from-a-piezosheet\/\"> Kolik energie lze z\u00edskat z piezokeramick\u00e9ho pl\u00e1tku<\/a><\/li>\n<li><a href=\"https:\/\/www.bjultrasonic.com\/cs\/what-is-the-process-of-making-electrical-contact-on-the-piezoceramicside-attached-downwards\/\"> Proces vytvo\u0159en\u00ed elektrick\u00e9ho kontaktu na piezokeramick\u00e9 stran\u011b p\u0159ipevn\u011bn\u00e9 sm\u011brem dol\u016f<\/a><\/li>\n<li><a href=\"https:\/\/www.bjultrasonic.com\/cs\/piezo-ceramics-how-can-damping-be-explained\/\"> Piezokeramika \u2013 P\u0159ehled tlumen\u00ed<\/a><\/li>\n<li><a href=\"https:\/\/www.bjultrasonic.com\/cs\/what-is-the-distance-a-bimorph-can-be-extended-before-it-breaks\/\"> Vzd\u00e1lenost, o kterou lze bimorf prodlou\u017eit, ne\u017e se zlom\u00ed<\/a><\/li>\n<li><a href=\"https:\/\/www.bjultrasonic.com\/cs\/what-is-the-process-of-cutting-up-a-sheetofpiezoceramic-into-desirable-sizes\/\"> Jak roz\u0159ezat piezokeramick\u00e9 pl\u00e1tky na po\u017eadovan\u00e9 rozm\u011bry<\/a><\/li>\n<li><a href=\"https:\/\/www.bjultrasonic.com\/cs\/piezo-ceramics-the-definition-of-tensile-strength\/\"> Piezokeramika \u2013 Definice pevnosti v tahu<\/a><\/li>\n<li><a href=\"https:\/\/www.bjultrasonic.com\/cs\/does-the-motion-of-a-piezo-actuator-actually-repeat-itself\/\"> Opakuje se pohyb piezoelektrick\u00e9ho aktu\u00e1toru skute\u010dn\u011b p\u0159esn\u011b<\/a><\/li>\n<li><a href=\"https:\/\/www.bjultrasonic.com\/cs\/what-is-the-process-of-eliminating-vibration-through-piezoceramics\/\"> Jak eliminovat vibrace pomoc\u00ed piezokeramiky<\/a><\/li>\n<li><a href=\"https:\/\/www.bjultrasonic.com\/cs\/piezo-ceramics-how-can-the-youngs-modulus-be-defined\/\"> Piezokeramika \u2013 Jak lze definovat Young\u016fv modul pru\u017enosti<\/a><\/li>\n<li><a href=\"https:\/\/www.bjultrasonic.com\/cs\/is-there-a-possibility-of-using-piezoceramic-actuators-at-cryogenic-temperatures\/\"> Lze piezoelektrick\u00e9 aktu\u00e1tory pou\u017e\u00edvat p\u0159i kryogenn\u00edch teplot\u00e1ch<\/a><\/li>\n<li><a href=\"https:\/\/www.bjultrasonic.com\/cs\/how-does-temperature-effectpiezoceramic-transducers\/\"> Jak teplota ovliv\u0148uje piezokeramick\u00e9 m\u011bni\u010de<\/a><\/li>\n<li><a href=\"https:\/\/www.bjultrasonic.com\/cs\/the-expected-life-of-piezoelectric-material\/\"> O\u010dek\u00e1van\u00e1 \u017eivotnost piezoelektrick\u00e9ho materi\u00e1lu<\/a><\/li>\n<li><a href=\"https:\/\/www.bjultrasonic.com\/cs\/the-amount-of-highest-voltage-that-can-driven-through-a-piezoceramic-sheet\/\"> Nejvy\u0161\u0161\u00ed nap\u011bt\u00ed, kter\u00e9 lze p\u0159iv\u00e9st na piezokeramick\u00fd pl\u00e1tek<\/a><\/li>\n<li><a href=\"https:\/\/www.bjultrasonic.com\/cs\/is-there-a-way-through-which-a-piezo-transducer-can-drive-with-a-square-wave\/\"> Jak \u0159\u00eddit piezoelektrick\u00fd m\u011bni\u010d obd\u00e9ln\u00edkov\u00fdm sign\u00e1lem<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Piezokeramika, tak\u00e9 zn\u00e1m\u00e1 jako piezoelektrick\u00e1 keramika, je t\u0159\u00edda funk\u010dn\u00edch materi\u00e1l\u016f, kter\u00e9 vykazuj\u00ed piezoelektrick\u00fd jev. To znamen\u00e1, \u017ee mohou generovat elektrick\u00fd n\u00e1boj p\u0159i vystaven\u00ed mechanick\u00e9mu nam\u00e1h\u00e1n\u00ed (p\u0159\u00edm\u00fd piezoelektrick\u00fd jev), a naopak se mohou deformovat p\u0159i aplikaci elektrick\u00e9ho pole (inverzn\u00ed piezoelektrick\u00fd jev). Tyto unik\u00e1tn\u00ed vlastnosti vedly k jejich \u0161irok\u00e9mu vyu\u017eit\u00ed v r\u016fzn\u00fdch aplikac\u00edch, od senzor\u016f a aktu\u00e1tor\u016f<\/p>\n","protected":false},"author":1,"featured_media":4848,"parent":0,"menu_order":17,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-72634","page","type-page","status-publish","has-post-thumbnail","hentry","prodpage-classic"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/pages\/72634","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/comments?post=72634"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/pages\/72634\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media\/4848"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media?parent=72634"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}