{"id":43127,"date":"2024-11-21T15:28:19","date_gmt":"2024-11-21T20:28:19","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/designing-high-efficiency-transducers-material-considerations-for-piezoelectric-applications\/"},"modified":"2025-01-21T07:07:20","modified_gmt":"2025-01-21T12:07:20","slug":"designing-high-efficiency-transducers-material-considerations-for-piezoelectric-applications","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/designing-high-efficiency-transducers-material-considerations-for-piezoelectric-applications\/","title":{"rendered":"V\u1eadt li\u1ec7u hi\u1ec7u su\u1ea5t cao cho \u1ee9ng d\u1ee5ng \u00e1p \u0111i\u1ec7n"},"content":{"rendered":"

Vi\u1ec7c thi\u1ebft k\u1ebf v\u1eadt li\u1ec7u \u0111\u1ea7u d\u00f2 hi\u1ec7u su\u1ea5t cao cho c\u00e1c \u1ee9ng d\u1ee5ng \u00e1p \u0111i\u1ec7n \u0111ang tr\u1edf th\u00e0nh m\u1ed9t l\u0129nh v\u1ef1c nghi\u00ean c\u1ee9u quan tr\u1ecdng, th\u00fac \u0111\u1ea9y s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a nhi\u1ec1u c\u00f4ng ngh\u1ec7 ti\u00ean ti\u1ebfn t\u1eeb c\u1ea3m bi\u1ebfn, thi\u1ebft b\u1ecb truy\u1ec1n \u0111\u1ed9ng \u0111\u1ebfn thu n\u0103ng l\u01b0\u1ee3ng. Hi\u1ec7u su\u1ea5t c\u1ee7a \u0111\u1ea7u d\u00f2 \u00e1p \u0111i\u1ec7n ph\u1ee5 thu\u1ed9c m\u1ea1nh m\u1ebd v\u00e0o \u0111\u1eb7c t\u00ednh v\u1eadt li\u1ec7u c\u1ea5u th\u00e0nh. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd \u0111i s\u00e2u v\u00e0o c\u00e1c y\u1ebfu t\u1ed1 quan tr\u1ecdng c\u1ea7n xem x\u00e9t khi l\u1ef1a ch\u1ecdn v\u00e0 thi\u1ebft k\u1ebf v\u1eadt li\u1ec7u cho c\u00e1c \u1ee9ng d\u1ee5ng \u00e1p \u0111i\u1ec7n, nh\u1eb1m t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt kh\u1eaft khe.<\/p>\n

\u0110\u1eb7c t\u00ednh v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n<\/h3>\n

Hi\u1ec7u su\u1ea5t c\u1ee7a \u0111\u1ea7u d\u00f2 \u00e1p \u0111i\u1ec7n \u0111\u01b0\u1ee3c quy\u1ebft \u0111\u1ecbnh b\u1edfi m\u1ed9t lo\u1ea1t c\u00e1c \u0111\u1eb7c t\u00ednh v\u1eadt li\u1ec7u, bao g\u1ed3m h\u1ec7 s\u1ed1 \u00e1p \u0111i\u1ec7n (d, g), h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i (\u03b5), t\u1ed5n hao \u0111i\u1ec7n m\u00f4i (tan \u03b4), m\u00f4 \u0111un \u0111\u00e0n h\u1ed3i (Y), h\u1ec7 s\u1ed1 gh\u00e9p c\u01a1 \u0111i\u1ec7n (k), v\u00e0 nhi\u1ec7t \u0111\u1ed9 Curie (Tc). Vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u ph\u00f9 h\u1ee3p c\u1ea7n ph\u1ea3i c\u00e2n nh\u1eafc gi\u1eefa c\u00e1c y\u1ebfu t\u1ed1 n\u00e0y \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u su\u1ea5t t\u1ed1i \u01b0u cho \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3.<\/p>\n

V\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n ph\u1ed5 bi\u1ebfn<\/h3>\n

Hi\u1ec7n nay, c\u00f3 nhi\u1ec1u lo\u1ea1i v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i, m\u1ed7i lo\u1ea1i \u0111\u1ec1u c\u00f3 nh\u1eefng \u01b0u \u0111i\u1ec3m v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m ri\u00eang. G\u1ed1m PZT (ch\u00ec zirconat titanat) l\u00e0 v\u1eadt li\u1ec7u ph\u1ed5 bi\u1ebfn nh\u1ea5t nh\u1edd h\u1ec7 s\u1ed1 \u00e1p \u0111i\u1ec7n cao v\u00e0 gi\u00e1 th\u00e0nh h\u1ee3p l\u00fd. V\u1eadt li\u1ec7u \u0111\u01a1n tinh th\u1ec3 nh\u01b0 PMN-PT (ch\u00ec magie niobat – ch\u00ec titanat) l\u1ea1i cho hi\u1ec7u su\u1ea5t v\u01b0\u1ee3t tr\u1ed9i h\u01a1n v\u1edbi h\u1ec7 s\u1ed1 \u00e1p \u0111i\u1ec7n v\u00e0 h\u1ec7 s\u1ed1 gh\u00e9p c\u01a1 \u0111i\u1ec7n cao h\u01a1n, tuy nhi\u00ean gi\u00e1 th\u00e0nh c\u0169ng cao h\u01a1n \u0111\u00e1ng k\u1ec3. Ngo\u00e0i ra, c\u00e1c v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n kh\u00f4ng ch\u1ee9a ch\u00ec nh\u01b0 KNN (kali natri niobat) \u0111ang \u0111\u01b0\u1ee3c nghi\u00ean c\u1ee9u v\u00e0 ph\u00e1t tri\u1ec3n m\u1ea1nh m\u1ebd do nh\u1eefng lo ng\u1ea1i v\u1ec1 m\u00f4i tr\u01b0\u1eddng.<\/p>\n\n\n\n\n\n\n\n
V\u1eadt li\u1ec7u<\/th>\nH\u1ec7 s\u1ed1 \u00e1p \u0111i\u1ec7n (d33) (pC\/N)<\/th>\nH\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i (\u03b5r)<\/th>\n\u01afu \u0111i\u1ec3m<\/th>\nNh\u01b0\u1ee3c \u0111i\u1ec3m<\/th>\n<\/tr>\n<\/thead>\n
PZT<\/td>\n200-700<\/td>\n1000-3000<\/td>\nGi\u00e1 th\u00e0nh h\u1ee3p l\u00fd, d\u1ec5 ch\u1ebf t\u1ea1o<\/td>\nH\u1ec7 s\u1ed1 \u00e1p \u0111i\u1ec7n v\u1eeba ph\u1ea3i, ch\u1ee9a ch\u00ec<\/td>\n<\/tr>\n
PMN-PT<\/td>\n>1500<\/td>\n>5000<\/td>\nH\u1ec7 s\u1ed1 \u00e1p \u0111i\u1ec7n cao, hi\u1ec7u su\u1ea5t v\u01b0\u1ee3t tr\u1ed9i<\/td>\nGi\u00e1 th\u00e0nh cao, kh\u00f3 ch\u1ebf t\u1ea1o<\/td>\n<\/tr>\n
KNN<\/td>\n80-200<\/td>\n400-1000<\/td>\nTh\u00e2n thi\u1ec7n m\u00f4i tr\u01b0\u1eddng<\/td>\nH\u1ec7 s\u1ed1 \u00e1p \u0111i\u1ec7n th\u1ea5p h\u01a1n PZT<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

T\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t \u0111\u1ea7u d\u00f2<\/h3>\n

\u0110\u1ec3 t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t c\u1ee7a \u0111\u1ea7u d\u00f2 \u00e1p \u0111i\u1ec7n, c\u1ea7n ph\u1ea3i xem x\u00e9t c\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 h\u00ecnh d\u1ea1ng, k\u00edch th\u01b0\u1edbc, v\u00e0 c\u1ea5u tr\u00fac c\u1ee7a \u0111\u1ea7u d\u00f2. Vi\u1ec7c thi\u1ebft k\u1ebf c\u1ea5u tr\u00fac ph\u00f9 h\u1ee3p c\u00f3 th\u1ec3 gi\u00fap t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 nh\u1ea1y, b\u0103ng th\u00f4ng, v\u00e0 hi\u1ec7u su\u1ea5t n\u0103ng l\u01b0\u1ee3ng c\u1ee7a \u0111\u1ea7u d\u00f2. V\u00ed d\u1ee5, trong c\u00e1c \u1ee9ng d\u1ee5ng si\u00eau \u00e2m, vi\u1ec7c l\u1ef1a ch\u1ecdn t\u1ea7n s\u1ed1 c\u1ed9ng h\u01b0\u1edfng ph\u00f9 h\u1ee3p v\u00e0 thi\u1ebft k\u1ebf \u0111\u1ea7u d\u00f2 v\u1edbi h\u00ecnh d\u1ea1ng t\u1ed1i \u01b0u c\u00f3 th\u1ec3 gi\u00fap t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 xuy\u00ean th\u1ea5u v\u00e0 \u0111\u1ed9 ph\u00e2n gi\u1ea3i. N\u1ebfu c\u1ea7n thi\u1ebft ph\u1ea3i nh\u1eafc \u0111\u1ebfn m\u1ed9t th\u01b0\u01a1ng hi\u1ec7u trong ng\u1eef c\u1ea3nh si\u00eau \u00e2m, c\u00f3 th\u1ec3 tham kh\u1ea3o Beijing Ultrasonic.<\/p>\n

K\u1ef9 thu\u1eadt ch\u1ebf t\u1ea1o v\u1eadt li\u1ec7u<\/h3>\n

K\u1ef9 thu\u1eadt ch\u1ebf t\u1ea1o v\u1eadt li\u1ec7u c\u0169ng \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c quy\u1ebft \u0111\u1ecbnh hi\u1ec7u su\u1ea5t c\u1ee7a \u0111\u1ea7u d\u00f2 \u00e1p \u0111i\u1ec7n. C\u00e1c ph\u01b0\u01a1ng ph\u00e1p ch\u1ebf t\u1ea1o kh\u00e1c nhau nh\u01b0 ph\u01b0\u01a1ng ph\u00e1p sol-gel, \u00e9p n\u00f3ng, v\u00e0 l\u1eafng \u0111\u1ecdng m\u00e0ng m\u1ecfng c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u1ea5u tr\u00fac vi m\u00f4 v\u00e0 \u0111\u1eb7c t\u00ednh c\u1ee7a v\u1eadt li\u1ec7u.<\/p>\n

Vi\u1ec7c thi\u1ebft k\u1ebf v\u1eadt li\u1ec7u \u0111\u1ea7u d\u00f2 \u00e1p \u0111i\u1ec7n hi\u1ec7u su\u1ea5t cao \u0111\u00f2i h\u1ecfi s\u1ef1 k\u1ebft h\u1ee3p gi\u1eefa vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u ph\u00f9 h\u1ee3p, t\u1ed1i \u01b0u h\u00f3a thi\u1ebft k\u1ebf c\u1ea5u tr\u00fac, v\u00e0 ki\u1ec3m so\u00e1t ch\u1eb7t ch\u1ebd quy tr\u00ecnh ch\u1ebf t\u1ea1o. S\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00e1c v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n m\u1edbi v\u00e0 c\u00e1c k\u1ef9 thu\u1eadt ch\u1ebf t\u1ea1o ti\u00ean ti\u1ebfn s\u1ebd ti\u1ebfp t\u1ee5c m\u1edf ra nh\u1eefng c\u01a1 h\u1ed9i m\u1edbi cho c\u00e1c \u1ee9ng d\u1ee5ng \u00e1p \u0111i\u1ec7n trong t\u01b0\u01a1ng lai.<\/p>\n","protected":false},"excerpt":{"rendered":"

Vi\u1ec7c thi\u1ebft k\u1ebf v\u1eadt li\u1ec7u \u0111\u1ea7u d\u00f2 hi\u1ec7u su\u1ea5t cao cho c\u00e1c \u1ee9ng d\u1ee5ng \u00e1p \u0111i\u1ec7n \u0111ang tr\u1edf th\u00e0nh m\u1ed9t l\u0129nh v\u1ef1c nghi\u00ean c\u1ee9u quan tr\u1ecdng, th\u00fac \u0111\u1ea9y s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a nhi\u1ec1u c\u00f4ng ngh\u1ec7 ti\u00ean ti\u1ebfn t\u1eeb c\u1ea3m bi\u1ebfn, thi\u1ebft b\u1ecb truy\u1ec1n \u0111\u1ed9ng \u0111\u1ebfn thu n\u0103ng l\u01b0\u1ee3ng. Hi\u1ec7u su\u1ea5t c\u1ee7a \u0111\u1ea7u d\u00f2 \u00e1p \u0111i\u1ec7n<\/p>\n","protected":false},"author":1,"featured_media":23746,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6406],"tags":[],"class_list":["post-43127","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\/43127","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=43127"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/43127\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/23746"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=43127"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=43127"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=43127"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}