{"id":43393,"date":"2024-11-21T15:27:11","date_gmt":"2024-11-21T20:27:11","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/demystifying-polarization-the-key-to-piezoceramic-functionality\/"},"modified":"2025-01-21T07:07:17","modified_gmt":"2025-01-21T12:07:17","slug":"demystifying-polarization-the-key-to-piezoceramic-functionality","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/demystifying-polarization-the-key-to-piezoceramic-functionality\/","title":{"rendered":"Gi\u1ea3i m\u00e3 ph\u00e2n c\u1ef1c: Ch\u00eca kh\u00f3a hi\u1ec7u n\u0103ng g\u1ed1m \u00e1p \u0111i\u1ec7n"},"content":{"rendered":"

S\u1ef1 ph\u00e2n c\u1ef1c, m\u1ed9t qu\u00e1 tr\u00ecnh t\u01b0\u1edfng ch\u1eebng nh\u01b0 ph\u1ee9c t\u1ea1p, l\u1ea1i ch\u00ednh l\u00e0 ch\u00eca kh\u00f3a \u0111\u1ec3 gi\u1ea3i m\u00e3 kh\u1ea3 n\u0103ng ho\u1ea1t \u0111\u1ed9ng k\u1ef3 di\u1ec7u c\u1ee7a v\u1eadt li\u1ec7u g\u1ed1m \u00e1p \u0111i\u1ec7n (piezoceramic). Hi\u1ec3u r\u00f5 b\u1ea3n ch\u1ea5t c\u1ee7a s\u1ef1 ph\u00e2n c\u1ef1c kh\u00f4ng ch\u1ec9 gi\u00fap ch\u00fang ta n\u1eafm b\u1eaft \u0111\u01b0\u1ee3c nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb s\u1eed d\u1ee5ng g\u1ed1m \u00e1p \u0111i\u1ec7n m\u00e0 c\u00f2n m\u1edf ra c\u00e1nh c\u1eeda cho vi\u1ec7c thi\u1ebft k\u1ebf v\u00e0 \u1ee9ng d\u1ee5ng v\u1eadt li\u1ec7u n\u00e0y m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 h\u01a1n.<\/p>\n

C\u01a1 ch\u1ebf ph\u00e2n c\u1ef1c trong g\u1ed1m \u00e1p \u0111i\u1ec7n<\/h3>\n

G\u1ed1m \u00e1p \u0111i\u1ec7n, \u0111i\u1ec3n h\u00ecnh nh\u01b0 PZT (ch\u00ec zirconate titanate), ban \u0111\u1ea7u s\u1edf h\u1eefu c\u1ea5u tr\u00fac tinh th\u1ec3 \u0111\u1ed1i x\u1ee9ng, kh\u00f4ng ph\u00e2n c\u1ef1c. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 c\u00e1c l\u01b0\u1ee1ng c\u1ef1c \u0111i\u1ec7n trong v\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp ng\u1eabu nhi\u00ean, tri\u1ec7t ti\u00eau l\u1eabn nhau, d\u1eabn \u0111\u1ebfn kh\u00f4ng c\u00f3 \u0111i\u1ec7n \u00e1p xu\u1ea5t hi\u1ec7n khi v\u1eadt li\u1ec7u b\u1ecb bi\u1ebfn d\u1ea1ng. Qu\u00e1 tr\u00ecnh ph\u00e2n c\u1ef1c ch\u00ednh l\u00e0 vi\u1ec7c s\u1eafp x\u1ebfp l\u1ea1i c\u00e1c l\u01b0\u1ee1ng c\u1ef1c \u0111i\u1ec7n n\u00e0y theo m\u1ed9t h\u01b0\u1edbng nh\u1ea5t \u0111\u1ecbnh b\u1eb1ng c\u00e1ch \u0111\u1eb7t v\u1eadt li\u1ec7u d\u01b0\u1edbi m\u1ed9t \u0111i\u1ec7n tr\u01b0\u1eddng m\u1ea1nh \u1edf nhi\u1ec7t \u0111\u1ed9 cao.<\/p>\n

\u1ea2nh h\u01b0\u1edfng c\u1ee7a \u0111i\u1ec7n tr\u01b0\u1eddng ph\u00e2n c\u1ef1c<\/h3>\n

\u0110i\u1ec7n tr\u01b0\u1eddng ph\u00e2n c\u1ef1c \u0111\u00f3ng vai tr\u00f2 quy\u1ebft \u0111\u1ecbnh \u0111\u1ebfn hi\u1ec7u su\u1ea5t c\u1ee7a g\u1ed1m \u00e1p \u0111i\u1ec7n. C\u01b0\u1eddng \u0111\u1ed9 \u0111i\u1ec7n tr\u01b0\u1eddng qu\u00e1 y\u1ebfu s\u1ebd kh\u00f4ng \u0111\u1ee7 \u0111\u1ec3 s\u1eafp x\u1ebfp c\u00e1c l\u01b0\u1ee1ng c\u1ef1c, trong khi c\u01b0\u1eddng \u0111\u1ed9 qu\u00e1 m\u1ea1nh c\u00f3 th\u1ec3 g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng ph\u00f3ng \u0111i\u1ec7n v\u00e0 ph\u00e1 h\u1ee7y v\u1eadt li\u1ec7u. Nhi\u1ec7t \u0111\u1ed9 trong qu\u00e1 tr\u00ecnh ph\u00e2n c\u1ef1c c\u0169ng l\u00e0 m\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn kh\u1ea3 n\u0103ng di chuy\u1ec3n v\u00e0 s\u1eafp x\u1ebfp c\u1ee7a c\u00e1c l\u01b0\u1ee1ng c\u1ef1c.<\/p>\n

S\u1ef1 thay \u0111\u1ed5i c\u1ea5u tr\u00fac sau ph\u00e2n c\u1ef1c<\/h3>\n

Sau khi \u0111\u01b0\u1ee3c ph\u00e2n c\u1ef1c, c\u1ea5u tr\u00fac tinh th\u1ec3 c\u1ee7a g\u1ed1m \u00e1p \u0111i\u1ec7n thay \u0111\u1ed5i, tr\u1edf n\u00ean b\u1ea5t \u0111\u1ed1i x\u1ee9ng. C\u00e1c l\u01b0\u1ee1ng c\u1ef1c \u0111i\u1ec7n gi\u1edd \u0111\u00e2y \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp theo m\u1ed9t tr\u1eadt t\u1ef1 nh\u1ea5t \u0111\u1ecbnh, t\u1ea1o ra m\u1ed9t momen l\u01b0\u1ee1ng c\u1ef1c \u0111i\u1ec7n t\u1ed5ng c\u1ed9ng. Ch\u00ednh s\u1ef1 thay \u0111\u1ed5i c\u1ea5u tr\u00fac n\u00e0y mang l\u1ea1i cho g\u1ed1m \u00e1p \u0111i\u1ec7n 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.<\/p>\n\n\n\n\n\n\n\n
\u0110\u1eb7c t\u00ednh<\/th>\nTr\u01b0\u1edbc ph\u00e2n c\u1ef1c<\/th>\nSau ph\u00e2n c\u1ef1c<\/th>\n<\/tr>\n<\/thead>\n
C\u1ea5u tr\u00fac tinh th\u1ec3<\/td>\n\u0110\u1ed1i x\u1ee9ng<\/td>\nB\u1ea5t \u0111\u1ed1i x\u1ee9ng<\/td>\n<\/tr>\n
Momen l\u01b0\u1ee1ng c\u1ef1c<\/td>\nTri\u1ec7t ti\u00eau<\/td>\nKh\u00e1c kh\u00f4ng<\/td>\n<\/tr>\n
Hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n<\/td>\nKh\u00f4ng c\u00f3<\/td>\nC\u00f3<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u1ee8ng d\u1ee5ng c\u1ee7a g\u1ed1m \u00e1p \u0111i\u1ec7n ph\u00e2n c\u1ef1c<\/h3>\n

G\u1ed1m \u00e1p \u0111i\u1ec7n ph\u00e2n c\u1ef1c \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u l\u0129nh v\u1ef1c, t\u1eeb c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed d\u00e2n d\u1ee5ng nh\u01b0 c\u1ea3m bi\u1ebfn, b\u1ed9 ph\u1eadn truy\u1ec1n \u0111\u1ed9ng, \u0111\u1ebfn c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p ph\u1ee9c t\u1ea1p h\u01a1n nh\u01b0 si\u00eau \u00e2m y t\u1ebf v\u00e0 c\u00f4ng nghi\u1ec7p. V\u00ed d\u1ee5, trong l\u0129nh v\u1ef1c si\u00eau \u00e2m, n\u1ebfu c\u1ea7n thi\u1ebft ph\u1ea3i \u0111\u1ec1 c\u1eadp \u0111\u1ebfn m\u1ed9t th\u01b0\u01a1ng hi\u1ec7u c\u1ee5 th\u1ec3 v\u00ec l\u00fd do ng\u1eef c\u1ea3nh ho\u1eb7c t\u00ednh ch\u00ednh x\u00e1c, c\u00f3 th\u1ec3 c\u00e2n nh\u1eafc nh\u1eafc \u0111\u1ebfn Beijing Ultrasonic.<\/p>\n

C\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t<\/h3>\n

Hi\u1ec7u su\u1ea5t c\u1ee7a g\u1ed1m \u00e1p \u0111i\u1ec7n ph\u1ee5 thu\u1ed9c v\u00e0o nhi\u1ec1u y\u1ebfu t\u1ed1, bao g\u1ed3m th\u00e0nh ph\u1ea7n v\u1eadt li\u1ec7u, qu\u00e1 tr\u00ecnh ch\u1ebf t\u1ea1o, v\u00e0 \u0111\u1eb7c bi\u1ec7t l\u00e0 qu\u00e1 tr\u00ecnh ph\u00e2n c\u1ef1c. Vi\u1ec7c ki\u1ec3m so\u00e1t ch\u1eb7t ch\u1ebd c\u00e1c th\u00f4ng s\u1ed1 trong qu\u00e1 tr\u00ecnh ph\u00e2n c\u1ef1c l\u00e0 ch\u00eca kh\u00f3a \u0111\u1ec3 t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t c\u1ee7a v\u1eadt li\u1ec7u.<\/p>\n\n\n\n\n\n\n\n
Y\u1ebfu t\u1ed1<\/th>\n\u1ea2nh h\u01b0\u1edfng<\/th>\n<\/tr>\n<\/thead>\n
Th\u00e0nh ph\u1ea7n v\u1eadt li\u1ec7u<\/td>\n\u1ea2nh h\u01b0\u1edfng \u0111\u1ebfn h\u1eb1ng s\u1ed1 \u00e1p \u0111i\u1ec7n<\/td>\n<\/tr>\n
Nhi\u1ec7t \u0111\u1ed9 ph\u00e2n c\u1ef1c<\/td>\n\u1ea2nh h\u01b0\u1edfng \u0111\u1ebfn kh\u1ea3 n\u0103ng s\u1eafp x\u1ebfp l\u01b0\u1ee1ng c\u1ef1c<\/td>\n<\/tr>\n
C\u01b0\u1eddng \u0111\u1ed9 \u0111i\u1ec7n tr\u01b0\u1eddng<\/td>\n\u1ea2nh h\u01b0\u1edfng \u0111\u1ebfn m\u1ee9c \u0111\u1ed9 ph\u00e2n c\u1ef1c<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

T\u00f3m l\u1ea1i, s\u1ef1 ph\u00e2n c\u1ef1c l\u00e0 y\u1ebfu t\u1ed1 c\u1ed1t l\u00f5i quy\u1ebft \u0111\u1ecbnh ch\u1ee9c n\u0103ng c\u1ee7a g\u1ed1m \u00e1p \u0111i\u1ec7n. Hi\u1ec3u r\u00f5 c\u01a1 ch\u1ebf v\u00e0 c\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn qu\u00e1 tr\u00ecnh ph\u00e2n c\u1ef1c s\u1ebd gi\u00fap ch\u00fang ta khai th\u00e1c t\u1ed1i \u0111a ti\u1ec1m n\u0103ng c\u1ee7a lo\u1ea1i v\u1eadt li\u1ec7u \u0111\u1eb7c bi\u1ec7t n\u00e0y, m\u1edf ra nh\u1eefng \u1ee9ng d\u1ee5ng m\u1edbi v\u00e0 ti\u00ean ti\u1ebfn h\u01a1n trong t\u01b0\u01a1ng lai.<\/p>\n","protected":false},"excerpt":{"rendered":"

S\u1ef1 ph\u00e2n c\u1ef1c, m\u1ed9t qu\u00e1 tr\u00ecnh t\u01b0\u1edfng ch\u1eebng nh\u01b0 ph\u1ee9c t\u1ea1p, l\u1ea1i ch\u00ednh l\u00e0 ch\u00eca kh\u00f3a \u0111\u1ec3 gi\u1ea3i m\u00e3 kh\u1ea3 n\u0103ng ho\u1ea1t \u0111\u1ed9ng k\u1ef3 di\u1ec7u c\u1ee7a v\u1eadt li\u1ec7u g\u1ed1m \u00e1p \u0111i\u1ec7n (piezoceramic). Hi\u1ec3u r\u00f5 b\u1ea3n ch\u1ea5t c\u1ee7a s\u1ef1 ph\u00e2n c\u1ef1c kh\u00f4ng ch\u1ec9 gi\u00fap ch\u00fang ta n\u1eafm b\u1eaft \u0111\u01b0\u1ee3c nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00e1c thi\u1ebft<\/p>\n","protected":false},"author":1,"featured_media":23778,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6406],"tags":[],"class_list":["post-43393","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\/43393","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=43393"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/43393\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/23778"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=43393"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=43393"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=43393"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}