{"id":53508,"date":"2022-09-26T18:29:04","date_gmt":"2022-09-26T23:29:04","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/is-there-any-truth-to-piezoceramic-sheets-being-really-fragile\/"},"modified":"2025-01-21T07:25:19","modified_gmt":"2025-01-21T12:25:19","slug":"is-there-any-truth-to-piezoceramic-sheets-being-really-fragile","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/is-there-any-truth-to-piezoceramic-sheets-being-really-fragile\/","title":{"rendered":"G\u1ed1m \u00e1p \u0111i\u1ec7n: M\u1ecfng manh hay b\u1ec1n b\u1ec9? S\u1ef1 th\u1eadt l\u00e0 g\u00ec?"},"content":{"rendered":"<p>G\u1ed1m \u00e1p \u0111i\u1ec7n, v\u1edbi kh\u1ea3 n\u0103ng chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng c\u01a1 h\u1ecdc th\u00e0nh n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n v\u00e0 ng\u01b0\u1ee3c l\u1ea1i, \u0111ang \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u l\u0129nh v\u1ef1c, t\u1eeb c\u1ea3m bi\u1ebfn si\u00eau \u00e2m \u0111\u1ebfn thi\u1ebft b\u1ecb t\u1ea1o n\u0103ng l\u01b0\u1ee3ng.  Tuy nhi\u00ean, b\u00ean c\u1ea1nh nh\u1eefng \u01b0u \u0111i\u1ec3m v\u01b0\u1ee3t tr\u1ed9i, t\u00ednh ch\u1ea5t &quot;mong manh&quot; c\u1ee7a v\u1eadt li\u1ec7u n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c nh\u1eafc \u0111\u1ebfn, khi\u1ebfn nhi\u1ec1u ng\u01b0\u1eddi e ng\u1ea1i trong vi\u1ec7c s\u1eed d\u1ee5ng. V\u1eady th\u1ef1c h\u01b0 v\u1ec1 \u0111\u1ed9 b\u1ec1n c\u1ee7a t\u1ea5m g\u1ed1m \u00e1p \u0111i\u1ec7n nh\u01b0 th\u1ebf n\u00e0o? B\u00e0i vi\u1ebft n\u00e0y s\u1ebd \u0111i s\u00e2u ph\u00e2n t\u00edch v\u1ea5n \u0111\u1ec1 n\u00e0y.<\/p>\n<h3>B\u1ea3n ch\u1ea5t v\u1eadt li\u1ec7u v\u00e0 c\u1ea5u tr\u00fac g\u1ed1m \u00e1p \u0111i\u1ec7n<\/h3>\n<p>G\u1ed1m \u00e1p \u0111i\u1ec7n th\u01b0\u1eddng \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o t\u1eeb c\u00e1c v\u1eadt li\u1ec7u g\u1ed1m \u0111a tinh th\u1ec3 nh\u01b0 PZT (Lead Zirconate Titanate). B\u1ea3n ch\u1ea5t v\u1eadt li\u1ec7u g\u1ed1m v\u1ed1n \u0111\u00e3 c\u00f3 \u0111\u1ed9 c\u1ee9ng cao, ch\u1ecbu \u0111\u01b0\u1ee3c \u00e1p l\u1ef1c l\u1edbn. Tuy nhi\u00ean, c\u1ea5u tr\u00fac \u0111a tinh th\u1ec3 v\u1edbi c\u00e1c ranh gi\u1edbi h\u1ea1t l\u1ea1i l\u00e0 \u0111i\u1ec3m y\u1ebfu ti\u1ec1m \u1ea9n, d\u1ec5 d\u1eabn \u0111\u1ebfn n\u1ee9t g\u00e3y khi ch\u1ecbu t\u00e1c \u0111\u1ed9ng l\u1ef1c m\u1ea1nh.  Ngo\u00e0i ra, qu\u00e1 tr\u00ecnh ph\u00e2n c\u1ef1c trong s\u1ea3n xu\u1ea5t c\u0169ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 b\u1ec1n c\u1ee7a g\u1ed1m.<\/p>\n<h3>\u1ea2nh h\u01b0\u1edfng c\u1ee7a \u0111\u1ed9 d\u00e0y v\u00e0 k\u00edch th\u01b0\u1edbc<\/h3>\n<p>\u0110\u1ed9 d\u00e0y c\u1ee7a t\u1ea5m g\u1ed1m \u00e1p \u0111i\u1ec7n c\u00f3 \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn \u0111\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc. T\u1ea5m g\u1ed1m c\u00e0ng m\u1ecfng th\u00ec c\u00e0ng d\u1ec5 b\u1ecb g\u00e3y, v\u1ee1 khi ch\u1ecbu t\u00e1c \u0111\u1ed9ng c\u01a1 h\u1ecdc. K\u00edch th\u01b0\u1edbc l\u1edbn c\u0169ng \u0111\u1ed3ng ngh\u0129a v\u1edbi vi\u1ec7c t\u0103ng kh\u1ea3 n\u0103ng xu\u1ea5t hi\u1ec7n c\u00e1c khuy\u1ebft t\u1eadt trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t, l\u00e0m gi\u1ea3m \u0111\u1ed9 b\u1ec1n t\u1ed5ng th\u1ec3.<\/p>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>\u0110\u1ed9 d\u00e0y (mm)<\/th>\n<th>Kh\u1ea3 n\u0103ng ch\u1ecbu u\u1ed1n<\/th>\n<th>Kh\u1ea3 n\u0103ng ch\u1ecbu va \u0111\u1eadp<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>0.2<\/td>\n<td>Th\u1ea5p<\/td>\n<td>R\u1ea5t th\u1ea5p<\/td>\n<\/tr>\n<tr>\n<td>0.5<\/td>\n<td>Trung b\u00ecnh<\/td>\n<td>Th\u1ea5p<\/td>\n<\/tr>\n<tr>\n<td>1.0<\/td>\n<td>Cao<\/td>\n<td>Trung b\u00ecnh<\/td>\n<\/tr>\n<tr>\n<td>2.0<\/td>\n<td>R\u1ea5t cao<\/td>\n<td>Cao<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>C\u00e1c y\u1ebfu t\u1ed1 m\u00f4i tr\u01b0\u1eddng t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn \u0111\u1ed9 b\u1ec1n<\/h3>\n<p>Nhi\u1ec7t \u0111\u1ed9 cao, \u0111\u1ed9 \u1ea9m v\u00e0 m\u00f4i tr\u01b0\u1eddng h\u00f3a ch\u1ea5t c\u00f3 th\u1ec3 l\u00e0m suy gi\u1ea3m hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 b\u1ec1n c\u1ee7a g\u1ed1m \u00e1p \u0111i\u1ec7n.  \u0110\u1eb7c bi\u1ec7t, s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 \u0111\u1ed9t ng\u1ed9t c\u00f3 th\u1ec3 g\u00e2y ra \u1ee9ng su\u1ea5t nhi\u1ec7t, d\u1eabn \u0111\u1ebfn n\u1ee9t v\u1ee1.<\/p>\n<h3>So s\u00e1nh v\u1edbi c\u00e1c v\u1eadt li\u1ec7u kh\u00e1c<\/h3>\n<p>So v\u1edbi c\u00e1c v\u1eadt li\u1ec7u g\u1ed1m kh\u00e1c, g\u1ed1m \u00e1p \u0111i\u1ec7n c\u00f3 \u0111\u1ed9 b\u1ec1n t\u01b0\u01a1ng \u0111\u1ed1i cao. Tuy nhi\u00ean, so v\u1edbi kim lo\u1ea1i, ch\u00fang v\u1eabn k\u00e9m h\u01a1n v\u1ec1 kh\u1ea3 n\u0103ng ch\u1ecbu u\u1ed1n v\u00e0 va \u0111\u1eadp.  <\/p>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>V\u1eadt li\u1ec7u<\/th>\n<th>\u0110\u1ed9 b\u1ec1n u\u1ed1n (MPa)<\/th>\n<th>\u0110\u1ed9 b\u1ec1n k\u00e9o (MPa)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>G\u1ed1m \u00e1p \u0111i\u1ec7n PZT<\/td>\n<td>~50-100<\/td>\n<td>~20-50<\/td>\n<\/tr>\n<tr>\n<td>Th\u00e9p kh\u00f4ng g\u1ec9<\/td>\n<td>~500-2000<\/td>\n<td>~500-1500<\/td>\n<\/tr>\n<tr>\n<td>Nh\u00f4m<\/td>\n<td>~200-400<\/td>\n<td>~100-300<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Bi\u1ec7n ph\u00e1p t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 b\u1ec1n<\/h3>\n<p>C\u00f3 nhi\u1ec1u ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 b\u1ec1n cho g\u1ed1m \u00e1p \u0111i\u1ec7n, bao g\u1ed3m: c\u1ea3i thi\u1ec7n quy tr\u00ecnh s\u1ea3n xu\u1ea5t, ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng ch\u1eb7t ch\u1ebd, ph\u1ee7 l\u1edbp b\u1ea3o v\u1ec7, thi\u1ebft k\u1ebf k\u1ebft c\u1ea5u h\u1ed7 tr\u1ee3 v\u00e0 l\u1ef1a ch\u1ecdn lo\u1ea1i g\u1ed1m ph\u00f9 h\u1ee3p v\u1edbi \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3.  V\u00ed d\u1ee5, trong m\u1ed9t s\u1ed1 \u1ee9ng d\u1ee5ng si\u00eau \u00e2m, vi\u1ec7c k\u1ebft h\u1ee3p g\u1ed1m \u00e1p \u0111i\u1ec7n v\u1edbi c\u00e1c v\u1eadt li\u1ec7u kh\u00e1c nh\u01b0 polymer c\u00f3 th\u1ec3 t\u0103ng c\u01b0\u1eddng \u0111\u00e1ng k\u1ec3 \u0111\u1ed9 b\u1ec1n v\u00e0 \u0111\u1ed9 tin c\u1eady.<\/p>\n<p>T\u00f3m l\u1ea1i, g\u1ed1m \u00e1p \u0111i\u1ec7n kh\u00f4ng qu\u00e1 &quot;mong manh&quot; nh\u01b0 nhi\u1ec1u ng\u01b0\u1eddi v\u1eabn ngh\u0129.  Tuy nhi\u00ean, c\u1ea7n ph\u1ea3i hi\u1ec3u r\u00f5 \u0111\u1eb7c t\u00ednh v\u1eadt li\u1ec7u v\u00e0 c\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 b\u1ec1n \u0111\u1ec3 l\u1ef1a ch\u1ecdn, s\u1eed d\u1ee5ng v\u00e0 b\u1ea3o qu\u1ea3n \u0111\u00fang c\u00e1ch.  Vi\u1ec7c \u00e1p d\u1ee5ng c\u00e1c bi\u1ec7n ph\u00e1p t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 b\u1ec1n s\u1ebd gi\u00fap khai th\u00e1c t\u1ed1i \u0111a ti\u1ec1m n\u0103ng c\u1ee7a lo\u1ea1i v\u1eadt li\u1ec7u \u0111\u1eb7c bi\u1ec7t n\u00e0y trong nhi\u1ec1u \u1ee9ng d\u1ee5ng c\u00f4ng ngh\u1ec7 cao.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>G\u1ed1m \u00e1p \u0111i\u1ec7n, v\u1edbi kh\u1ea3 n\u0103ng chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng c\u01a1 h\u1ecdc th\u00e0nh n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n v\u00e0 ng\u01b0\u1ee3c l\u1ea1i, \u0111ang \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u l\u0129nh v\u1ef1c, t\u1eeb c\u1ea3m bi\u1ebfn si\u00eau \u00e2m \u0111\u1ebfn thi\u1ebft b\u1ecb t\u1ea1o n\u0103ng l\u01b0\u1ee3ng. Tuy nhi\u00ean, b\u00ean c\u1ea1nh nh\u1eefng \u01b0u \u0111i\u1ec3m v\u01b0\u1ee3t tr\u1ed9i, t\u00ednh ch\u1ea5t &quot;mong manh&quot; c\u1ee7a v\u1eadt<\/p>\n","protected":false},"author":1,"featured_media":4869,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6406],"tags":[],"class_list":["post-53508","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","prodpage-classic"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/53508","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/comments?post=53508"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/53508\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/4869"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=53508"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=53508"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=53508"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}