{"id":48924,"date":"2023-04-21T22:52:21","date_gmt":"2023-04-22T03:52:21","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/how-to-make-a-piezoelectric-transducer\/"},"modified":"2025-01-21T07:17:19","modified_gmt":"2025-01-21T12:17:19","slug":"how-to-make-a-piezoelectric-transducer","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/how-to-make-a-piezoelectric-transducer\/","title":{"rendered":"H\u01b0\u1edbng d\u1eabn ch\u1ebf t\u1ea1o b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e1p \u0111i\u1ec7n"},"content":{"rendered":"

Vi\u1ec7c ch\u1ebf t\u1ea1o m\u1ed9t b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e1p \u0111i\u1ec7n (piezoelectric transducer) \u0111\u00f2i h\u1ecfi s\u1ef1 t\u1ec9 m\u1ec9 v\u00e0 ki\u1ebfn th\u1ee9c v\u1ec1 v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n c\u0169ng nh\u01b0 c\u00e1c k\u1ef9 thu\u1eadt li\u00ean quan. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd h\u01b0\u1edbng d\u1eabn chi ti\u1ebft c\u00e1ch ch\u1ebf t\u1ea1o m\u1ed9t b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e1p \u0111i\u1ec7n \u0111\u01a1n gi\u1ea3n.<\/p>\n

Ch\u1ecdn v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n<\/h3>\n

V\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n l\u00e0 c\u1ed1t l c\u1ee7a b\u1ed9 chuy\u1ec3n \u0111\u1ed5i. C\u00e1c v\u1eadt li\u1ec7u ph\u1ed5 bi\u1ebfn bao g\u1ed3m g\u1ed1m PZT (ch\u00ec zirconate titanate), th\u1ea1ch anh, v\u00e0 polyvinylidene fluoride (PVDF). PZT th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng nh\u1edd hi\u1ec7u su\u1ea5t cao v\u00e0 gi\u00e1 th\u00e0nh h\u1ee3p l\u00fd. L\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u ph\u1ee5 thu\u1ed9c v\u00e0o \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3, v\u00ed d\u1ee5 nh\u01b0 t\u1ea7n s\u1ed1 ho\u1ea1t \u0111\u1ed9ng mong mu\u1ed1n, m\u1ee9c \u0111\u1ed9 nh\u1ea1y v\u00e0 \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng.<\/p>\n\n\n\n\n\n\n\n
V\u1eadt li\u1ec7u<\/th>\n\u01afu \u0111i\u1ec3m<\/th>\nNh\u01b0\u1ee3c \u0111i\u1ec3m<\/th>\n\u1ee8ng d\u1ee5ng<\/th>\n<\/tr>\n<\/thead>\n
PZT<\/td>\nHi\u1ec7u su\u1ea5t cao, gi\u00e1 th\u00e0nh h\u1ee3p l\u00fd<\/td>\n\u0110\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc h\u1ea1n ch\u1ebf<\/td>\nLoa, c\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t<\/td>\n<\/tr>\n
Th\u1ea1ch anh<\/td>\n\u0110\u1ed9 b\u1ec1n cao, \u1ed5n \u0111\u1ecbnh t\u1ea7n s\u1ed1<\/td>\nHi\u1ec7u su\u1ea5t th\u1ea5p h\u01a1n PZT<\/td>\n\u0110\u1ed3ng h\u1ed3, b\u1ed9 dao \u0111\u1ed9ng<\/td>\n<\/tr>\n
PVDF<\/td>\nLinh ho\u1ea1t, d\u1ea3i t\u1ea7n s\u1ed1 r\u1ed9ng<\/td>\nHi\u1ec7u su\u1ea5t th\u1ea5p nh\u1ea5t<\/td>\nC\u1ea3m bi\u1ebfn rung \u0111\u1ed9ng, micro<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Chu\u1ea9n b\u1ecb v\u1eadt li\u1ec7u<\/h3>\n

Sau khi ch\u1ecdn v\u1eadt li\u1ec7u, c\u1ea7n chu\u1ea9n b\u1ecb b\u1ec1 m\u1eb7t v\u1eadt li\u1ec7u b\u1eb1ng c\u00e1ch m\u00e0i v\u00e0 \u0111\u00e1nh b\u00f3ng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ti\u1ebfp x\u00fac \u0111i\u1ec7n t\u1ed1t. K\u00edch th\u01b0\u1edbc v\u00e0 h\u00ecnh d\u1ea1ng c\u1ee7a v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n s\u1ebd \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn hi\u1ec7u su\u1ea5t c\u1ee7a b\u1ed9 chuy\u1ec3n \u0111\u1ed5i.<\/p>\n

G\u1eafn \u0111i\u1ec7n c\u1ef1c<\/h3>\n

\u0110i\u1ec7n c\u1ef1c \u0111\u01b0\u1ee3c g\u1eafn l\u00ean b\u1ec1 m\u1eb7t v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n \u0111\u1ec3 t\u1ea1o ra tr\u01b0\u1eddng \u0111i\u1ec7n. V\u1eadt li\u1ec7u \u0111i\u1ec7n c\u1ef1c th\u01b0\u1eddng l\u00e0 b\u1ea1c, v\u00e0ng ho\u1eb7c niken. Qu\u00e1 tr\u00ecnh g\u1eafn \u0111i\u1ec7n c\u1ef1c c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n b\u1eb1ng c\u00e1ch phun, b\u1ed1c bay ho\u1eb7c d\u00e1n. Vi\u1ec7c \u0111\u1ea3m b\u1ea3o ti\u1ebfp x\u00fac \u0111i\u1ec7n t\u1ed1t gi\u1eefa \u0111i\u1ec7n c\u1ef1c v\u00e0 v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n l\u00e0 r\u1ea5t quan tr\u1ecdng.<\/p>\n

Ki\u1ec3m tra v\u00e0 \u0111\u00f3ng g\u00f3i<\/h3>\n

Sau khi g\u1eafn \u0111i\u1ec7n c\u1ef1c, c\u1ea7n ki\u1ec3m tra hi\u1ec7u su\u1ea5t c\u1ee7a b\u1ed9 chuy\u1ec3n \u0111\u1ed5i b\u1eb1ng c\u00e1ch \u0111o \u0111i\u1ec7n \u00e1p ra khi t\u00e1c d\u1ee5ng l\u1ef1c ho\u1eb7c ng\u01b0\u1ee3c l\u1ea1i. N\u1ebfu c\u1ea7n thi\u1ebft, c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh k\u00edch th\u01b0\u1edbc v\u00e0 h\u00ecnh d\u1ea1ng c\u1ee7a v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n ho\u1eb7c \u0111i\u1ec7n c\u1ef1c. Cu\u1ed1i c\u00f9ng, b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u0111\u01b0\u1ee3c \u0111\u00f3ng g\u00f3i \u0111\u1ec3 b\u1ea3o v\u1ec7 kh\u1ecfi m\u00f4i tr\u01b0\u1eddng b\u00ean ngo\u00e0i v\u00e0 t\u0103ng \u0111\u1ed9 b\u1ec1n. V\u1eadt li\u1ec7u \u0111\u00f3ng g\u00f3i c\u00f3 th\u1ec3 l\u00e0 epoxy ho\u1eb7c silicone.<\/p>\n

\u1ee8ng d\u1ee5ng c\u1ee7a b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e1p \u0111i\u1ec7n<\/h3>\n

B\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e1p \u0111i\u1ec7n c\u00f3 r\u1ea5t nhi\u1ec1u \u1ee9ng d\u1ee5ng trong \u0111\u1eddi s\u1ed1ng, t\u1eeb c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed d\u00e2n d\u1ee5ng \u0111\u1ebfn c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p ph\u1ee9c t\u1ea1p. V\u00ed d\u1ee5 nh\u01b0 trong c\u00e1c thi\u1ebft b\u1ecb si\u00eau \u00e2m, c\u1ea3m bi\u1ebfn \u00e1p su\u1ea5t, m\u00e1y ph\u00e1t \u0111i\u1ec7n, v.v. Trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p, n\u1ebfu c\u1ea7n thi\u1ebft b\u1ecb si\u00eau \u00e2m v\u1edbi hi\u1ec7u su\u1ea5t cao v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c, c\u00f3 th\u1ec3 tham kh\u1ea3o c\u00e1c s\u1ea3n ph\u1ea9m c\u1ee7a Beijing Ultrasonic.<\/p>\n

T\u00f3m l\u1ea1i, vi\u1ec7c ch\u1ebf t\u1ea1o m\u1ed9t b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e1p \u0111i\u1ec7n \u0111\u00f2i h\u1ecfi s\u1ef1 ch\u00ednh x\u00e1c v\u00e0 ki\u1ebfn th\u1ee9c chuy\u00ean m\u00f4n. Tuy nhi\u00ean, b\u1eb1ng c\u00e1ch tu\u00e2n th\u1ee7 c\u00e1c b\u01b0\u1edbc h\u01b0\u1edbng d\u1eabn tr\u00ean v\u00e0 l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u ph\u00f9 h\u1ee3p, b\u1ea1n c\u00f3 th\u1ec3 t\u1ef1 ch\u1ebf t\u1ea1o m\u1ed9t b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e1p \u0111i\u1ec7n \u0111\u01a1n gi\u1ea3n cho c\u00e1c \u1ee9ng d\u1ee5ng c\u01a1 b\u1ea3n. Vi\u1ec7c nghi\u00ean c\u1ee9u k\u1ef9 l\u01b0\u1ee1ng v\u1ec1 v\u1eadt li\u1ec7u v\u00e0 k\u1ef9 thu\u1eadt ch\u1ebf t\u1ea1o s\u1ebd gi\u00fap n\u00e2ng cao hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 b\u1ec1n c\u1ee7a b\u1ed9 chuy\u1ec3n \u0111\u1ed5i.<\/p>\n","protected":false},"excerpt":{"rendered":"

Vi\u1ec7c ch\u1ebf t\u1ea1o m\u1ed9t b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e1p \u0111i\u1ec7n (piezoelectric transducer) \u0111\u00f2i h\u1ecfi s\u1ef1 t\u1ec9 m\u1ec9 v\u00e0 ki\u1ebfn th\u1ee9c v\u1ec1 v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n c\u0169ng nh\u01b0 c\u00e1c k\u1ef9 thu\u1eadt li\u00ean quan. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd h\u01b0\u1edbng d\u1eabn chi ti\u1ebft c\u00e1ch ch\u1ebf t\u1ea1o m\u1ed9t b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e1p \u0111i\u1ec7n \u0111\u01a1n gi\u1ea3n. Ch\u1ecdn v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n<\/p>\n","protected":false},"author":1,"featured_media":19417,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6406],"tags":[],"class_list":["post-48924","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\/48924","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=48924"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/48924\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/19417"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=48924"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=48924"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=48924"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}