{"id":55805,"date":"2022-05-02T15:02:55","date_gmt":"2022-05-02T20:02:55","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/materials-used-to-make-piezoelectricity\/"},"modified":"2025-01-21T07:25:31","modified_gmt":"2025-01-21T12:25:31","slug":"materials-used-to-make-piezoelectricity","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/materials-used-to-make-piezoelectricity\/","title":{"rendered":"V\u1eadt li\u1ec7u ch\u1ebf t\u1ea1o \u00e1p \u0111i\u1ec7n: Kh\u00e1m ph\u00e1 & \u1ee8ng d\u1ee5ng"},"content":{"rendered":"

Piezoelectricity, hi\u1ec7n t\u01b0\u1ee3ng m\u1ed9t s\u1ed1 v\u1eadt li\u1ec7u t\u1ea1o ra \u0111i\u1ec7n \u00e1p khi ch\u1ecbu \u00e1p l\u1ef1c c\u01a1 h\u1ecdc v\u00e0 ng\u01b0\u1ee3c l\u1ea1i, \u0111\u00e3 v\u00e0 \u0111ang \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong nhi\u1ec1u \u1ee9ng d\u1ee5ng c\u00f4ng ngh\u1ec7. T\u1eeb nh\u1eefng chi\u1ebfc b\u1eadt l\u1eeda gas \u0111\u01a1n gi\u1ea3n \u0111\u1ebfn c\u00e1c thi\u1ebft b\u1ecb y t\u1ebf ph\u1ee9c t\u1ea1p, hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n \u0111\u1ec1u hi\u1ec7n di\u1ec7n v\u00e0 ng\u00e0y c\u00e0ng tr\u1edf n\u00ean kh\u00f4ng th\u1ec3 thi\u1ebfu. Vi\u1ec7c t\u00ecm hi\u1ec3u v\u00e0 ph\u00e1t tri\u1ec3n c\u00e1c v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n m\u1edbi l\u00e0 m\u1ed9t l\u0129nh v\u1ef1c nghi\u00ean c\u1ee9u s\u00f4i \u0111\u1ed9ng, h\u1ee9a h\u1eb9n m\u1edf ra nhi\u1ec1u ti\u1ec1m n\u0103ng \u1ee9ng d\u1ee5ng trong t\u01b0\u01a1ng lai.<\/p>\n

G\u1ed1m \u00e1p \u0111i\u1ec7n (Piezoceramics)<\/h3>\n

G\u1ed1m \u00e1p \u0111i\u1ec7n, nh\u01b0 ch\u00ec zirconat titanat (PZT), l\u00e0 lo\u1ea1i v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n ph\u1ed5 bi\u1ebfn nh\u1ea5t hi\u1ec7n nay. PZT c\u00f3 hi\u1ec7u su\u1ea5t \u00e1p \u0111i\u1ec7n cao, d\u1ec5 ch\u1ebf t\u1ea1o th\u00e0nh nhi\u1ec1u h\u00ecnh d\u1ea1ng v\u00e0 k\u00edch th\u01b0\u1edbc kh\u00e1c nhau, ph\u00f9 h\u1ee3p v\u1edbi nhi\u1ec1u \u1ee9ng d\u1ee5ng. Tuy nhi\u00ean, PZT ch\u1ee9a ch\u00ec, m\u1ed9t kim lo\u1ea1i n\u1eb7ng \u0111\u1ed9c h\u1ea1i, g\u00e2y ra nh\u1eefng lo ng\u1ea1i v\u1ec1 m\u00f4i tr\u01b0\u1eddng.<\/p>\n\n\n\n\n\n\n\n\n
\u0110\u1eb7c t\u00ednh<\/th>\nPZT<\/th>\n<\/tr>\n<\/thead>\n
Hi\u1ec7u su\u1ea5t \u00e1p \u0111i\u1ec7n<\/td>\nCao<\/td>\n<\/tr>\n
\u0110\u1ed9 b\u1ec1n<\/td>\nT\u1ed1t<\/td>\n<\/tr>\n
Gi\u00e1 th\u00e0nh<\/td>\nTrung b\u00ecnh<\/td>\n<\/tr>\n
\u0110\u1ed9c h\u1ea1i<\/td>\nC\u00f3 (ch\u1ee9a ch\u00ec)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

V\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n \u0111\u01a1n tinh th\u1ec3 (Single Crystal Piezoelectric Materials)<\/h3>\n

V\u1eadt li\u1ec7u \u0111\u01a1n tinh th\u1ec3, v\u00ed d\u1ee5 nh\u01b0 langasit (La3Ga5SiO14), th\u01b0\u1eddng th\u1ec3 hi\u1ec7n hi\u1ec7u su\u1ea5t \u00e1p \u0111i\u1ec7n cao h\u01a1n so v\u1edbi g\u1ed1m \u00e1p \u0111i\u1ec7n. Ch\u00fang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi \u0111\u1ed9 ch\u00ednh x\u00e1c cao, ch\u1eb3ng h\u1ea1n nh\u01b0 c\u1ea3m bi\u1ebfn si\u00eau \u00e2m.<\/p>\n\n\n\n\n\n\n\n\n
\u0110\u1eb7c t\u00ednh<\/th>\n\u0110\u01a1n tinh th\u1ec3<\/th>\n<\/tr>\n<\/thead>\n
Hi\u1ec7u su\u1ea5t \u00e1p \u0111i\u1ec7n<\/td>\nR\u1ea5t cao<\/td>\n<\/tr>\n
\u0110\u1ed9 b\u1ec1n<\/td>\nKh\u00e1<\/td>\n<\/tr>\n
Gi\u00e1 th\u00e0nh<\/td>\nCao<\/td>\n<\/tr>\n
\u0110\u1ed9c h\u1ea1i<\/td>\nKh\u00f4ng<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

V\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n polyme (Polymer Piezoelectric Materials)<\/h3>\n

Polyvinylidene fluoride (PVDF) l\u00e0 m\u1ed9t v\u00ed d\u1ee5 \u0111i\u1ec3n h\u00ecnh c\u1ee7a v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n polyme. \u01afu \u0111i\u1ec3m c\u1ee7a PVDF l\u00e0 t\u00ednh linh ho\u1ea1t, tr\u1ecdng l\u01b0\u1ee3ng nh\u1eb9 v\u00e0 kh\u1ea3 n\u0103ng ch\u1ebf t\u1ea1o th\u00e0nh m\u00e0ng m\u1ecfng. Tuy nhi\u00ean, hi\u1ec7u su\u1ea5t \u00e1p \u0111i\u1ec7n c\u1ee7a PVDF th\u1ea5p h\u01a1n so v\u1edbi g\u1ed1m v\u00e0 \u0111\u01a1n tinh th\u1ec3.<\/p>\n\n\n\n\n\n\n\n\n
\u0110\u1eb7c t\u00ednh<\/th>\nPolyme<\/th>\n<\/tr>\n<\/thead>\n
Hi\u1ec7u su\u1ea5t \u00e1p \u0111i\u1ec7n<\/td>\nTh\u1ea5p<\/td>\n<\/tr>\n
\u0110\u1ed9 b\u1ec1n<\/td>\nTrung b\u00ecnh<\/td>\n<\/tr>\n
Gi\u00e1 th\u00e0nh<\/td>\nTh\u1ea5p<\/td>\n<\/tr>\n
\u0110\u1ed9c h\u1ea1i<\/td>\nKh\u00f4ng<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

V\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n composite (Composite Piezoelectric Materials)<\/h3>\n

V\u1eadt li\u1ec7u composite k\u1ebft h\u1ee3p c\u00e1c v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n v\u1edbi c\u00e1c v\u1eadt li\u1ec7u kh\u00e1c, v\u00ed d\u1ee5 nh\u01b0 polymer, \u0111\u1ec3 c\u1ea3i thi\u1ec7n t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc ho\u1eb7c \u00e1p \u0111i\u1ec7n. Ch\u00fang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi c\u1ea3 \u0111\u1ed9 b\u1ec1n v\u00e0 hi\u1ec7u su\u1ea5t \u00e1p \u0111i\u1ec7n t\u1ed1t.<\/p>\n\n\n\n\n\n\n\n\n
\u0110\u1eb7c t\u00ednh<\/th>\nComposite<\/th>\n<\/tr>\n<\/thead>\n
Hi\u1ec7u su\u1ea5t \u00e1p \u0111i\u1ec7n<\/td>\nTrung b\u00ecnh \u0111\u1ebfn cao<\/td>\n<\/tr>\n
\u0110\u1ed9 b\u1ec1n<\/td>\nCao<\/td>\n<\/tr>\n
Gi\u00e1 th\u00e0nh<\/td>\nKh\u00e1 cao<\/td>\n<\/tr>\n
\u0110\u1ed9c h\u1ea1i<\/td>\nT\u00f9y thu\u1ed9c th\u00e0nh ph\u1ea7n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

V\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n kh\u00f4ng ch\u1ee9a ch\u00ec (Lead-free Piezoelectric Materials)<\/h3>\n

Do nh\u1eefng lo ng\u1ea1i v\u1ec1 m\u00f4i tr\u01b0\u1eddng li\u00ean quan \u0111\u1ebfn ch\u00ec trong PZT, vi\u1ec7c nghi\u00ean c\u1ee9u v\u00e0 ph\u00e1t tri\u1ec3n v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n kh\u00f4ng ch\u1ee9a ch\u00ec \u0111ang \u0111\u01b0\u1ee3c \u0111\u1ea9y m\u1ea1nh. C\u00e1c v\u1eadt li\u1ec7u nh\u01b0 kali natri niobat (KNN) \u0111ang \u0111\u01b0\u1ee3c xem l\u00e0 \u1ee9ng c\u1eed vi\u00ean ti\u1ec1m n\u0103ng thay th\u1ebf PZT trong t\u01b0\u01a1ng lai.<\/p>\n\n\n\n\n\n\n\n\n
\u0110\u1eb7c t\u00ednh<\/th>\nKh\u00f4ng ch\u1ee9a ch\u00ec<\/th>\n<\/tr>\n<\/thead>\n
Hi\u1ec7u su\u1ea5t \u00e1p \u0111i\u1ec7n<\/td>\n\u0110ang ph\u00e1t tri\u1ec3n<\/td>\n<\/tr>\n
\u0110\u1ed9 b\u1ec1n<\/td>\n\u0110ang ph\u00e1t tri\u1ec3n<\/td>\n<\/tr>\n
Gi\u00e1 th\u00e0nh<\/td>\n\u0110ang ph\u00e1t tri\u1ec3n<\/td>\n<\/tr>\n
\u0110\u1ed9c h\u1ea1i<\/td>\nKh\u00f4ng<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

S\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n \u0111ang di\u1ec5n ra m\u1ea1nh m\u1ebd, v\u1edbi m\u1ee5c ti\u00eau t\u1ea1o ra c\u00e1c v\u1eadt li\u1ec7u c\u00f3 hi\u1ec7u su\u1ea5t cao h\u01a1n, th\u00e2n thi\u1ec7n v\u1edbi m\u00f4i tr\u01b0\u1eddng h\u01a1n v\u00e0 gi\u00e1 th\u00e0nh h\u1ee3p l\u00fd h\u01a1n. T\u1eeb nh\u1eefng \u1ee9ng d\u1ee5ng truy\u1ec1n th\u1ed1ng \u0111\u1ebfn nh\u1eefng c\u00f4ng ngh\u1ec7 ti\u00ean ti\u1ebfn nh\u01b0 thu n\u0103ng l\u01b0\u1ee3ng v\u00e0 c\u1ea3m bi\u1ebfn nano, v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n h\u1ee9a h\u1eb9n s\u1ebd ti\u1ebfp t\u1ee5c \u0111\u00f3ng g\u00f3p quan tr\u1ecdng v\u00e0o s\u1ef1 ph\u00e1t tri\u1ec3n khoa h\u1ecdc v\u00e0 c\u00f4ng ngh\u1ec7 trong t\u01b0\u01a1ng lai.<\/p>\n","protected":false},"excerpt":{"rendered":"

Piezoelectricity, hi\u1ec7n t\u01b0\u1ee3ng m\u1ed9t s\u1ed1 v\u1eadt li\u1ec7u t\u1ea1o ra \u0111i\u1ec7n \u00e1p khi ch\u1ecbu \u00e1p l\u1ef1c c\u01a1 h\u1ecdc v\u00e0 ng\u01b0\u1ee3c l\u1ea1i, \u0111\u00e3 v\u00e0 \u0111ang \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong nhi\u1ec1u \u1ee9ng d\u1ee5ng c\u00f4ng ngh\u1ec7. T\u1eeb nh\u1eefng chi\u1ebfc b\u1eadt l\u1eeda gas \u0111\u01a1n gi\u1ea3n \u0111\u1ebfn c\u00e1c thi\u1ebft b\u1ecb y t\u1ebf ph\u1ee9c t\u1ea1p, hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n \u0111\u1ec1u<\/p>\n","protected":false},"author":1,"featured_media":1616,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6406],"tags":[],"class_list":["post-55805","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\/55805","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=55805"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/55805\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/1616"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=55805"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=55805"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=55805"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}