{"id":20998,"date":"2022-02-24T09:02:58","date_gmt":"2022-02-24T09:02:58","guid":{"rendered":"https:\/\/www.meetyoucarbide.com\/?p=20998"},"modified":"2022-02-24T09:03:00","modified_gmt":"2022-02-24T09:03:00","slug":"do-you-know-what-is-high-entropy-alloy","status":"publish","type":"post","link":"https:\/\/www.meetyoucarbide.com\/vi\/do-you-know-what-is-high-entropy-hop-kim\/","title":{"rendered":"B\u1ea1n c\u00f3 bi\u1ebft H\u1ee3p kim entropy cao l\u00e0 g\u00ec kh\u00f4ng?"},"content":{"rendered":"
\n

H\u1ee3p kim entropy cao l\u00e0 m\u1ed9t v\u1eadt li\u1ec7u m\u1edbi xu\u1ea5t hi\u1ec7n trong m\u01b0\u1eddi n\u0103m g\u1ea7n \u0111\u00e2y. N\u00f3 ch\u1ee7 y\u1ebfu \u0111\u1ec1 c\u1eadp \u0111\u1ebfn h\u1ee3p kim \u0111\u01b0\u1ee3c t\u1ea1o th\u00e0nh b\u1edfi n\u0103m ho\u1eb7c nhi\u1ec1u h\u01a1n m\u1ed9t l\u01b0\u1ee3ng kim lo\u1ea1i b\u1eb1ng nhau ho\u1eb7c x\u1ea5p x\u1ec9 b\u1eb1ng nhau. Nh\u1eefng \u01b0u \u0111i\u1ec3m c\u1ee7a \u0111\u1ed9 b\u1ec1n cao, \u0111\u1ed9 c\u1ee9ng cao, ch\u1ed1ng \u0103n m\u00f2n, ch\u1ed1ng m\u00e0i m\u00f2n, ch\u1ecbu nhi\u1ec7t \u0111\u1ed9 cao, ch\u1ed1ng b\u1ee9c x\u1ea1 v\u00e0 t\u1eeb t\u00ednh m\u1ec1m l\u00e0 t\u1ea5t c\u1ea3 nh\u1eefng l\u00fd do t\u1ea1i sao h\u1ee3p kim entropy cao c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u1ecb tr\u01b0\u1eddng c\u00f4ng nh\u1eadn. \u0110\u1eb7c bi\u1ec7t trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t nh\u01b0 nhi\u1ec7t \u0111\u1ed9 cao, \u00e1p su\u1ea5t cao v\u00e0 t\u1ed1c \u0111\u1ed9 cao, c\u00e1c b\u1ed9 ph\u1eadn kim lo\u1ea1i l\u00e0m b\u1eb1ng h\u1ee3p kim entropy cao c\u00f3 th\u1ec3 duy tr\u00ec c\u00e1c \u0111\u1eb7c t\u00ednh c\u01a1 h\u1ecdc t\u1ed1t. Ngo\u00e0i ra, c\u00e1c \u0111\u1eb7c t\u00ednh c\u1ee7a h\u1ee3p kim entropy cao r\u1ea5t tuy\u1ec7t v\u1eddi trong \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng kh\u00ed h\u1eadu kh\u1eafc nghi\u1ec7t, dung d\u1ecbch \u0103n m\u00f2n v\u00e0 t\u1ea3i tr\u1ecdng \u0111\u1ed9ng m\u1ea1nh. V\u00ec v\u1eady, h\u1ee3p kim entropy cao c\u00f3 kh\u00f4ng gian \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong k\u1ef9 thu\u1eadt h\u00e0ng h\u1ea3i, c\u00f4ng nghi\u1ec7p h\u1ea1t nh\u00e2n, c\u00f4ng nghi\u1ec7p \u0111\u1ed9ng c\u01a1 v\u00e0 c\u00f4ng nghi\u1ec7p c\u00f4ng c\u1ee5 c\u1ee9ng. C\u00e1c h\u1ee3p kim entropy cao trong kh\u00f4ng gian n\u00e0y n\u00ean \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong k\u1ef9 thu\u1eadt h\u00e0ng h\u1ea3i, c\u00f4ng nghi\u1ec7p h\u1ea1t nh\u00e2n, c\u00f4ng nghi\u1ec7p \u0111\u1ed9ng c\u01a1 v\u00e0 c\u00f4ng nghi\u1ec7p c\u00f4ng c\u1ee5 c\u1ee9ng.<\/p>\n\n\n\n

L\u00e0 m\u1ed9t c\u00f4ng ngh\u1ec7 mang t\u00ednh b\u01b0\u1edbc ngo\u1eb7t m\u1edf ra cu\u1ed9c c\u00e1ch m\u1ea1ng c\u00f4ng nghi\u1ec7p l\u1ea7n th\u1ee9 t\u01b0, ng\u00e0nh s\u1ea3n xu\u1ea5t ph\u1ee5 gia in 3D lu\u00f4n \u0111\u01b0\u1ee3c nh\u00e0 n\u01b0\u1edbc k\u1ef3 v\u1ecdng r\u1ea5t nhi\u1ec1u. \u0110\u1ec3 \u0111i\u1ec1u ch\u1ec9nh ng\u00e0nh s\u1ea3n xu\u1ea5t t\u0103ng s\u1ea3n l\u01b0\u1ee3ng, nh\u00e0 n\u01b0\u1edbc c\u00f3 k\u1ebf ho\u1ea1ch s\u1eeda \u0111\u1ed5i m\u1ed9t lo\u1ea1t c\u00e1c ti\u00eau chu\u1ea9n li\u00ean quan \u0111\u1ec3 h\u01b0\u1edbng d\u1eabn. B\u1ed9t h\u1ee3p kim entropy cao \u0111\u1ec3 s\u1ea3n xu\u1ea5t ph\u1ee5 gia l\u00e0 m\u1ed9t nguy\u00ean li\u1ec7u quan tr\u1ecdng \u0111\u1ec3 s\u1ea3n xu\u1ea5t ph\u1ee5 gia c\u1ee7a h\u1ee3p kim entropy cao. \u0110\u1ed3ng th\u1eddi, c\u00f4ng ngh\u1ec7 s\u1ea3n xu\u1ea5t ph\u1ee5 gia c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ph\u00e1t tri\u1ec3n v\u00e0 chu\u1ea9n b\u1ecb c\u00e1c b\u1ed9 ph\u1eadn h\u1ee3p kim c\u00f3 entropy cao v\u1edbi l\u00f4 nh\u1ecf v\u00e0 h\u00ecnh d\u1ea1ng ph\u1ee9c t\u1ea1p. Ngo\u00e0i ra, c\u00e1c b\u1ed9 ph\u1eadn h\u1ee3p kim entropy cao \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ebf b\u1eb1ng c\u00f4ng ngh\u1ec7 s\u1ea3n xu\u1ea5t ph\u1ee5 gia c\u00f3 h\u1ea1t m\u1ecbn, c\u1ea5u tr\u00fac v\u00e0 th\u00e0nh ph\u1ea7n \u0111\u1ed3ng nh\u1ea5t, c\u00f3 th\u1ec3 gi\u1ea3i quy\u1ebft hi\u1ec7u qu\u1ea3 c\u00e1c nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a c\u1ea5u tr\u00fac tinh th\u1ec3 th\u00f4, \u0111\u1ed9 x\u1ed1p b\u00ean trong v\u00e0 s\u1ef1 ph\u00e2n t\u00e1ch th\u00e0nh ph\u1ea7n c\u1ee7a v\u1eadt li\u1ec7u h\u1ee3p kim entropy cao truy\u1ec1n th\u1ed1ng, \u0111\u1ea9y nhanh t\u1ed1c \u0111\u1ed9 v\u00e0 \u0111\u00e1p \u1ee9ng th\u1eddi gian ph\u00e1t tri\u1ec3n s\u1ea3n ph\u1ea9m m\u1edbi, v\u00e0 th\u00fac \u0111\u1ea9y \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i c\u1ee7a h\u1ee3p kim entropy cao trong c\u00e1c l\u0129nh v\u1ef1c kh\u00e1c nhau. Do \u0111\u00f3, ti\u00eau chu\u1ea9n th\u1eed nghi\u1ec7m qu\u1ed1c gia v\u1ec1 b\u1ed9t h\u1ee3p kim entropy cao \u0111\u1ec3 s\u1ea3n xu\u1ea5t ph\u1ee5 gia c\u0169ng \u0111ang \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng.<\/p>\n\n\n\n

C\u00e1c ch\u1ec9 s\u1ed1 ki\u1ec3m tra hi\u1ec7u su\u1ea5t ch\u00ednh v\u00e0 c\u00e1c th\u00f4ng s\u1ed1 hi\u1ec7u su\u1ea5t qu\u00e1 tr\u00ecnh c\u1ee7a b\u1ed9t h\u1ee3p kim entropy cao ch\u1ee7 y\u1ebfu bao g\u1ed3m th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc, k\u00edch th\u01b0\u1edbc h\u1ea1t, m\u1eadt \u0111\u1ed9 r\u1eddi, m\u1eadt \u0111\u1ed9 v\u00f2i, t\u00ednh l\u01b0u \u0111\u1ed9ng, v.v. Qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t ph\u1ee5 gia c\u1ea7n ph\u1ea3i t\u1ea1o ra s\u1ef1 \u0111\u00f4ng \u0111\u1eb7c. C\u00e1c quy tr\u00ecnh s\u1ea3n xu\u1ea5t ph\u1ee5 gia kh\u00e1c nhau c\u00f3 c\u00e1c y\u00eau c\u1ea7u kh\u00e1c nhau \u0111\u1ed1i v\u1edbi k\u00edch th\u01b0\u1edbc h\u1ea1t c\u1ee7a b\u1ed9t, v\u00e0 c\u00e1c ch\u1ec9 s\u1ed1 t\u00ednh n\u0103ng nh\u01b0 th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc, m\u1eadt \u0111\u1ed9 r\u1eddi, m\u1eadt \u0111\u1ed9 rung v\u00e0 t\u00ednh l\u01b0u \u0111\u1ed9ng c\u1ee7a b\u1ed9t s\u1ebd kh\u00f4ng ch\u1ec9 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t ph\u1ee5 gia m\u00e0 c\u00f2n \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u1ea5u tr\u00fac vi m\u00f4, c\u01a1 h\u1ecdc C\u00e1c \u0111\u1eb7c t\u00ednh, \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a k\u00edch th\u01b0\u1edbc Ch\u1ea5t l\u01b0\u1ee3ng b\u1ec1 m\u1eb7t, v.v ... H\u00e3y \u0111\u1ec3 t\u00f4i gi\u1edbi thi\u1ec7u chi ti\u1ebft c\u00e1c ch\u1ec9 s\u1ed1 ki\u1ec3m tra ch\u00ednh n\u00e0y.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Ph\u00e2n t\u00edch th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc<\/h2>\n\n\n\n

Hi\u1ec7n t\u1ea1i, c\u00e1c nh\u00e3n hi\u1ec7u b\u1ed9t h\u1ee3p kim entropy cao \u0111\u1ec3 s\u1ea3n xu\u1ea5t ph\u1ee5 gia s\u1ea3n xu\u1ea5t h\u00e0ng lo\u1ea1t ch\u1ee7 y\u1ebfu bao g\u1ed3m feconicrmn, feconicrmo, feconicral, feconicrti v\u00e0 feconicr. Trong s\u1ed1 \u0111\u00f3, c\u00e1c nguy\u00ean t\u1ed1 ch\u00ednh trong th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a n\u0103m h\u1ee3p kim entropi cao \u0111\u01b0\u1ee3c c\u1ea5u t\u1ea1o theo t\u1ef7 l\u1ec7 nguy\u00ean t\u1eed b\u1eb1ng nhau, sau \u0111\u00f3 quy \u0111\u1ed5i th\u00e0nh ph\u1ea7n tr\u0103m kh\u1ed1i l\u01b0\u1ee3ng t\u01b0\u01a1ng \u1ee9ng; C\u00e1c nguy\u00ean t\u1ed1 t\u1ea1p ch\u1ea5t ch\u1ee7 y\u1ebfu bao g\u1ed3m \u00f4xy, nit\u01a1, c\u00e1c nguy\u00ean t\u1ed1 kh\u00ed, cacbon, ph\u1ed1t pho, l\u01b0u hu\u1ef3nh v\u00e0 c\u00e1c t\u1ea1p ch\u1ea5t kh\u00e1c. B\u1eb1ng c\u00e1ch \u0111i\u1ec1u tra b\u00e1o c\u00e1o th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a b\u1ed9t h\u1ee3p kim entropy cao do c\u00e1c \u0111\u01a1n v\u1ecb li\u00ean quan s\u1ea3n xu\u1ea5t v\u00e0 c\u00e1c y\u00eau c\u1ea7u \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf, m\u1ed9t ph\u1ea1m vi th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc th\u00edch h\u1ee3p v\u00e0 h\u1ee3p l\u00fd \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp. Vi\u1ec7c ph\u00e2n t\u00edch h\u00e0m l\u01b0\u1ee3ng c\u00e1c nguy\u00ean t\u1ed1 ch\u00ednh Fe, Mn, Ni, Mo, Co, Cr, Al, Ti v\u00e0 c\u00e1c nguy\u00ean t\u1ed1 t\u1ea1p ch\u1ea5t C, s, P, O v\u00e0 N trong s\u1ea3n ph\u1ea9m ph\u1ea3i \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n theo ph\u01b0\u01a1ng ph\u00e1p do nh\u00e0 cung c\u1ea5p x\u00e1c \u0111\u1ecbnh v\u00e0 ng\u01b0\u1eddi mua th\u00f4ng qua th\u01b0\u01a1ng l\u01b0\u1ee3ng.<\/p>\n\n\n\n

Ph\u00e1t hi\u1ec7n k\u00edch th\u01b0\u1edbc h\u1ea1t<\/h2>\n\n\n\n

Ph\u1ea1m vi k\u00edch th\u01b0\u1edbc h\u1ea1t c\u1ee7a b\u1ed9t h\u1ee3p kim entropy cao \u0111\u01b0\u1ee3c chu\u1ea9n b\u1ecb b\u1eb1ng c\u00e1c quy tr\u00ecnh kh\u00e1c nhau l\u00e0 kh\u00e1c nhau, nh\u01b0ng n\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i b\u1eb1ng c\u00e1ch s\u00e0ng l\u1ecdc. \u0110\u1ec1 c\u1eadp \u0111\u1ebfn vi\u1ec7c s\u1eed d\u1ee5ng, th\u00e0nh ph\u1ea7n k\u00edch th\u01b0\u1edbc h\u1ea1t, ph\u1ea1m vi k\u00edch th\u01b0\u1edbc h\u1ea1t v\u00e0 s\u1ef1 ph\u00e2n b\u1ed1 k\u00edch th\u01b0\u1edbc h\u1ea1t c\u1ee7a c\u00e1c lo\u1ea1i b\u1ed9t h\u1ee3p kim entropy cao kh\u00e1c nhau, ch\u00fang ta c\u00f3 th\u1ec3 chia k\u00edch th\u01b0\u1edbc h\u1ea1t th\u00e0nh hai lo\u1ea1i, nh\u01b0 sau:<\/p>\n\n\n\n

Y\u00eau c\u1ea7u lo\u1ea1i I: F \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng cho l\u0129nh v\u1ef1c s\u1ea3n xu\u1ea5t ph\u1ee5 gia n\u1ea5u ch\u1ea3y laser ch\u1ecdn l\u1ecdc. C\u00f4ng ngh\u1ec7 s\u1ea3n xu\u1ea5t ph\u1ee5 gia n\u1ea5u ch\u1ea3y laser ch\u1ecdn l\u1ecdc ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 s\u1ea3n xu\u1ea5t c\u00e1c b\u1ed9 ph\u1eadn ch\u00ednh x\u00e1c v\u1edbi k\u00edch th\u01b0\u1edbc nh\u1ecf v\u00e0 y\u00eau c\u1ea7u ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t cao, v\u00e0 k\u00edch th\u01b0\u1edbc nh\u1ecf h\u01a1n 63 \u03bc M b\u1ed9t h\u1ee3p kim entropy m\u1ecbn cao, v\u00ec th\u00f4ng th\u01b0\u1eddng b\u1ed9t m\u1ecbn c\u00f3 th\u1ec3 tr\u1ef1c ti\u1ebfp thu \u0111\u01b0\u1ee3c c\u00e1c b\u1ed9 ph\u1eadn c\u00f3 \u0111\u1ed9 ch\u00ednh x\u00e1c cao v\u00e0 t\u1ed1t ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t, ph\u1ea1m vi k\u00edch th\u01b0\u1edbc h\u1ea1t b\u1ed9t trong l\u0129nh v\u1ef1c n\u00e0y l\u00e0 \u2264 63 \u03bc m. Nh\u00f3m k\u00edch th\u01b0\u1edbc h\u1ea1t:> 63 \u03bc M kh\u00f4ng l\u1edbn h\u01a1n 5%, D10 l\u00e0 15 \u03bc m \uff5e 25 \u03bc m \uff1b D90 l\u00e0 50 \u03bc m \uff5e 65 \u03bc m \uff1b\uff1b<\/p>\n\n\n\n

Y\u00eau c\u1ea7u lo\u1ea1i II: F \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng cho l\u0129nh v\u1ef1c s\u1ea3n xu\u1ea5t t\u1ea5m \u1ed1p laze v\u00e0 s\u1ea3n xu\u1ea5t ph\u1ee5 gia n\u1ea5u ch\u1ea3y ch\u00f9m tia \u0111i\u1ec7n t\u1eed. M\u1eadt \u0111\u1ed9 n\u0103ng l\u01b0\u1ee3ng c\u1ee7a tia laze v\u00e0 tia \u0111i\u1ec7n t\u1eed cao, k\u00edch th\u01b0\u1edbc h\u1ea1t c\u1ee7a b\u1ed9t nung ch\u1ea3y l\u1edbn h\u01a1n so v\u1edbi y\u00eau c\u1ea7u c\u1ee7a c\u00f4ng ngh\u1ec7 s\u1ea3n xu\u1ea5t ph\u1ee5 gia n\u1ea5u ch\u1ea3y laze ch\u1ecdn l\u1ecdc, v\u00e0 hi\u1ec7u qu\u1ea3 s\u1ea3n xu\u1ea5t cao h\u01a1n. Ph\u1ea1m vi k\u00edch th\u01b0\u1edbc h\u1ea1t c\u1ee7a b\u1ed9t y\u00eau c\u1ea7u trong l\u0129nh v\u1ef1c k\u1ef9 thu\u1eadt n\u00e0y l\u00e0 45 \u03bc m \uff5e 150 \u03bc m. Nh\u00f3m k\u00edch th\u01b0\u1edbc h\u1ea1t: \u2264 45 \u03bc M kh\u00f4ng qu\u00e1 5%,> 150 \u03bc M kh\u00f4ng qu\u00e1 5%, D10 l\u00e0 40 \u03bc m \uff5e 55 \u03bc m \uff1b Kh\u00f4ng qu\u00e1 D90 \u03bc m \uff1b<\/p>\n\n\n\n

Ph\u00e1t hi\u1ec7n m\u1eadt \u0111\u1ed9 l\u1ecfng l\u1ebbo<\/h2>\n\n\n\n

Kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang c\u1ee7a b\u1ed9t l\u00e0 kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang \u0111\u01b0\u1ee3c \u0111o sau khi b\u1ed9t l\u1ea5p \u0111\u1ea7y t\u1ef1 do v\u00e0o v\u1eadt ch\u1ee9a ti\u00eau chu\u1ea9n trong c\u00e1c \u0111i\u1ec1u ki\u1ec7n quy \u0111\u1ecbnh, ngh\u0129a l\u00e0 kh\u1ed1i l\u01b0\u1ee3ng tr\u00ean m\u1ed9t \u0111\u01a1n v\u1ecb th\u1ec3 t\u00edch khi b\u1ed9t \u0111\u01b0\u1ee3c l\u1ea5p \u0111\u1ea7y l\u1ecfng. \u0110\u00f3 l\u00e0 m\u1ed9t hi\u1ec7u su\u1ea5t qu\u00e1 tr\u00ecnh c\u1ee7a b\u1ed9t. M\u1eadt \u0111\u1ed9 kh\u1ed1i l\u00e0 hi\u1ec7n th\u00e2n to\u00e0n di\u1ec7n c\u1ee7a c\u00e1c \u0111\u1eb7c t\u00ednh kh\u00e1c nhau c\u1ee7a b\u1ed9t, c\u00f3 th\u1ec3 ph\u1ea3n \u00e1nh m\u1eadt \u0111\u1ed9, h\u00ecnh d\u1ea1ng h\u1ea1t, m\u1eadt \u0111\u1ed9 h\u1ea1t v\u00e0 tr\u1ea1ng th\u00e1i b\u1ec1 m\u1eb7t, k\u00edch th\u01b0\u1edbc h\u1ea1t v\u00e0 s\u1ef1 ph\u00e2n b\u1ed1 k\u00edch th\u01b0\u1edbc h\u1ea1t c\u1ee7a b\u1ed9t. H\u00ecnh d\u1ea1ng c\u1ee7a c\u00e1c h\u1ea1t b\u1ed9t c\u00e0ng \u0111\u1ec1u \u0111\u1eb7n, b\u1ec1 m\u1eb7t h\u1ea1t c\u00e0ng m\u1ecbn v\u00e0 c\u00e1c h\u1ea1t c\u00e0ng \u0111\u1eb7c th\u00ec kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang c\u1ee7a b\u1ed9t c\u00e0ng l\u1edbn. N\u00f3i chung, m\u1eadt \u0111\u1ed9 kh\u1ed1i gi\u1ea3m khi k\u00edch th\u01b0\u1edbc h\u1ea1t gi\u1ea3m, h\u1ec7 s\u1ed1 kh\u00f4ng c\u1ea7u c\u1ee7a h\u1ea1t t\u0103ng v\u00e0 \u0111\u1ed9 nh\u00e1m b\u1ec1 m\u1eb7t t\u0103ng.<\/p>\n\n\n\n

Y\u00eau c\u1ea7u ki\u1ec3m tra m\u1eadt \u0111\u1ed9 r\u1eddi:<\/h2>\n\n\n\n

Y\u00eau c\u1ea7u lo\u1ea1i I: kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang c\u1ee7a ffeconicrmn kh\u00f4ng \u0111\u01b0\u1ee3c nh\u1ecf h\u01a1n 3,8g \/ cm3 v\u00e0 c\u1ee7a feconicrmo kh\u00f4ng \u0111\u01b0\u1ee3c nh\u1ecf h\u01a1n 4,2g \/ cm3,<\/p>\n\n\n\n

T\u1ef7 tr\u1ecdng r\u1eddi c\u1ee7a feconicr kh\u00f4ng \u0111\u01b0\u1ee3c nh\u1ecf h\u01a1n 4,0g \/ cm3, v\u00e0 t\u1ef7 tr\u1ecdng r\u1eddi c\u1ee7a feconicral v\u00e0 feconicrti kh\u00f4ng \u0111\u01b0\u1ee3c nh\u1ecf h\u01a1n 3,2g \/ cm3;<\/p>\n\n\n\n

Y\u00eau c\u1ea7u lo\u1ea1i II: m\u1eadt \u0111\u1ed9 r\u1eddi c\u1ee7a ffeconicrmn kh\u00f4ng nh\u1ecf h\u01a1n 4,0g \/ cm3, c\u1ee7a feconicrmo kh\u00f4ng nh\u1ecf h\u01a1n 4,4g \/ cm3, c\u1ee7a feconicr kh\u00f4ng nh\u1ecf h\u01a1n 4,2g \/ cm3, c\u00f2n c\u1ee7a feconicral v\u00e0 feconicrti th\u00ec kh\u00f4ng nh\u1ecf h\u01a1n 3,4g \/ cm3;<\/p>\n\n\n\n

Ph\u00e1t hi\u1ec7n m\u1eadt \u0111\u1ed9 rung<\/h2>\n\n\n\n

M\u1eadt \u0111\u1ed9 rung l\u00e0 m\u1eadt \u0111\u1ed9 b\u1ed9t trong \u0111\u00f3 b\u1ed9t \u0111\u1ea1t tr\u1ea1ng th\u00e1i s\u1eafp x\u1ebfp l\u00fd t\u01b0\u1edfng th\u00f4ng qua rung \u0111\u1ed9ng c\u01a1 h\u1ecdc trong th\u00f9ng ch\u1ee9a. T\u1ef7 l\u1ec7 ph\u1ea7n tr\u0103m t\u0103ng l\u00ean so v\u1edbi m\u1eadt \u0111\u1ed9 r\u1eddi l\u00e0 s\u1ef1 th\u1ec3 hi\u1ec7n to\u00e0n di\u1ec7n c\u1ee7a c\u00e1c t\u00ednh ch\u1ea5t v\u1eadt l\u00fd kh\u00e1c nhau c\u1ee7a b\u1ed9t, ch\u1eb3ng h\u1ea1n nh\u01b0 k\u00edch th\u01b0\u1edbc h\u1ea1t b\u1ed9t v\u00e0 s\u1ef1 ph\u00e2n b\u1ed1 c\u1ee7a n\u00f3, h\u00ecnh d\u1ea1ng h\u1ea1t v\u00e0 \u0111\u1ed9 nh\u00e1m b\u1ec1 m\u1eb7t c\u1ee7a n\u00f3, di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t c\u1ee5 th\u1ec3, v.v. M\u1eadt \u0111\u1ed9 n\u00e9n c\u1ee7a b\u1ed9t c\u00e0ng l\u1edbn , t\u00ednh l\u1ecfng t\u01b0\u01a1ng \u0111\u1ed1i c\u1ee7a b\u1ed9t c\u00e0ng t\u1ed1t.<\/p>\n\n\n\n

Y\u00eau c\u1ea7u ki\u1ec3m tra m\u1eadt \u0111\u1ed9 r\u1eddi:<\/p>\n\n\n\n

Y\u00eau c\u1ea7u lo\u1ea1i I: m\u1eadt \u0111\u1ed9 n\u00e9n ch\u1eb7t c\u1ee7a feconicrmn kh\u00f4ng \u0111\u01b0\u1ee3c nh\u1ecf h\u01a1n 4,4g \/ cm3, c\u1ee7a feconicrmo kh\u00f4ng \u0111\u01b0\u1ee3c nh\u1ecf h\u01a1n 5,0g \/ cm3, c\u1ee7a feconicr kh\u00f4ng \u0111\u01b0\u1ee3c nh\u1ecf h\u01a1n 4,4g \/ cm3, v\u00e0 c\u1ee7a feconicr v\u00e0 feconicrti kh\u00f4ng \u0111\u01b0\u1ee3c nh\u1ecf h\u01a1n 3,8g \/ cm3;<\/p>\n\n\n\n

Y\u00eau c\u1ea7u lo\u1ea1i II: m\u1eadt \u0111\u1ed9 n\u00e9n ch\u1eb7t c\u1ee7a ffeconicrmn kh\u00f4ng nh\u1ecf h\u01a1n 4,6g \/ cm3, c\u1ee7a feconicrmo kh\u00f4ng nh\u1ecf h\u01a1n 5,2g \/ cm3, c\u1ee7a feconicr kh\u00f4ng nh\u1ecf h\u01a1n 4,6g \/ cm3, c\u00f2n c\u1ee7a feconicral v\u00e0 feconicrti th\u00ec kh\u00f4ng nh\u1ecf h\u01a1n 4,2g \/ cm3;<\/p>\n\n\n\n

Ki\u1ec3m tra t\u00ednh thanh kho\u1ea3n<\/h2>\n\n\n\n

\u0110\u1ed9 ch\u1ea3y l\u00e0 th\u1eddi gian c\u1ea7n thi\u1ebft \u0111\u1ec3 m\u1ed9t l\u01b0\u1ee3ng b\u1ed9t nh\u1ea5t \u0111\u1ecbnh ch\u1ea3y qua m\u1ed9t ph\u1ec5u ti\u00eau chu\u1ea9n v\u1edbi m\u1ed9t kh\u1ea9u \u0111\u1ed9 x\u00e1c \u0111\u1ecbnh. Ph\u1ec5u t\u1ed1c \u0111\u1ed9 d\u00f2ng ch\u1ea3y th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng v\u00e0 \u0111\u01a1n v\u1ecb l\u01b0u l\u01b0\u1ee3ng l\u00e0 s \/ 50g, cho bi\u1ebft \u0111\u1ed9 kh\u00f3 c\u1ee7a d\u00f2ng b\u1ed9t. Gi\u00e1 tr\u1ecb c\u00e0ng nh\u1ecf th\u00ec t\u00ednh l\u01b0u \u0111\u1ed9ng c\u00e0ng t\u1ed1t. K\u00edch th\u01b0\u1edbc h\u1ea1t, \u0111\u1ed9 \u1ea9m, t\u0129nh \u0111i\u1ec7n v\u00e0 b\u1ed9t c\u00f3 h\u00ecnh c\u1ea7u hay kh\u00f4ng s\u1ebd \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1eb7c t\u00ednh ch\u1ea3y c\u1ee7a b\u1ed9t. Cho d\u00f9 l\u00e0 \u0111\u1ed1i v\u1edbi qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t ph\u1ee5 gia c\u1ee7a qu\u00e1 tr\u00ecnh t\u1ea1o b\u1ed9t hay c\u1ea5p b\u1ed9t, t\u00ednh l\u01b0u \u0111\u1ed9ng c\u1ee7a b\u1ed9t s\u1ebd \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t ph\u1ee5 gia v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a b\u1ed9 ph\u1eadn. Y\u00eau c\u1ea7u c\u1ee5 th\u1ec3 nh\u01b0 sau<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Tr\u00ean \u0111\u00e2y l\u00e0 c\u00e1c ch\u1ec9 ti\u00eau ki\u1ec3m tra theo y\u00eau c\u1ea7u c\u1ee7a quy ho\u1ea1ch qu\u1ed1c gia \u0111\u1ed1i v\u1edbi b\u1ed9t h\u1ee3p kim c\u00f3 h\u00e0m l\u01b0\u1ee3ng entropy cao \u0111\u1ec3 s\u1ea3n xu\u1ea5t ph\u1ee5 gia. Tr\u01b0\u1edbc \u0111\u00f3, Trung Qu\u1ed1c kh\u00f4ng c\u00f3 ti\u00eau chu\u1ea9n qu\u1ed1c gia ho\u1eb7c ti\u00eau chu\u1ea9n c\u00f4ng nghi\u1ec7p li\u00ean quan \u0111\u1ed1i v\u1edbi b\u1ed9t h\u1ee3p kim entropy cao \u0111\u1ec3 s\u1ea3n xu\u1ea5t ph\u1ee5 gia v\u00e0 c\u0169ng kh\u00f4ng c\u00f3 ti\u00eau chu\u1ea9n li\u00ean quan n\u00e0o tr\u00ean th\u1ebf gi\u1edbi \u0111\u1ec3 tham kh\u1ea3o. V\u00ec v\u1eady, \u0111\u00e2y l\u00e0 l\u1ea7n \u0111\u1ea7u ti\u00ean x\u00e2y d\u1ef1ng ti\u00eau chu\u1ea9n c\u1ee7a b\u1ed9t h\u1ee3p kim entropy cao. Tuy nhi\u00ean, ng\u00e0nh c\u00f4ng nghi\u1ec7p v\u00e0 c\u00f4ng ngh\u1ec7 s\u1ea3n xu\u1ea5t h\u1ee3p kim entropy cao \u0111\u00e3 kh\u00e1 tr\u01b0\u1edfng th\u00e0nh v\u00e0 \u1ed5n \u0111\u1ecbnh \u1edf Trung Qu\u1ed1c. Theo c\u00e1c ti\u00eau chu\u1ea9n doanh nghi\u1ec7p v\u00e0 d\u1eef li\u1ec7u k\u1ef9 thu\u1eadt c\u00f3 li\u00ean quan, c\u00e1c y\u00eau c\u1ea7u v\u1ec1 ch\u1ec9 s\u1ed1 c\u1ee7a ti\u00eau chu\u1ea9n qu\u1ed1c gia \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng l\u1ea7n n\u00e0y c\u0169ng v\u01b0\u1ee3t xa c\u00e1c y\u00eau c\u1ea7u v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m tr\u00ean th\u1ecb tr\u01b0\u1eddng qu\u1ed1c t\u1ebf. Do \u0111\u00f3, c\u00e1c doanh nghi\u1ec7p c\u00f3 li\u00ean quan c\u00f3 th\u1ec3 tham kh\u1ea3o c\u00e1c ch\u1ec9 ti\u00eau tr\u00ean \u0111\u1ec3 t\u1ef1 ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m c\u1ee7a m\u00ecnh.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

High entropy alloy is a new material rising in recent ten years. It mainly refers to the alloy formed by five or more equal or approximately equal amounts of metals. The advantages of high strength, high hardness, corrosion resistance, wear resistance, high temperature resistance, radiation resistance and soft magnetism are all the reasons why high…<\/p>","protected":false},"author":2,"featured_media":20999,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[79],"tags":[],"jetpack_featured_media_url":"https:\/\/www.meetyoucarbide.com\/wp-content\/uploads\/2022\/02\/t013a400150039dcd0f.jpg","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/posts\/20998"}],"collection":[{"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/comments?post=20998"}],"version-history":[{"count":0,"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/posts\/20998\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/media\/20999"}],"wp:attachment":[{"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/media?parent=20998"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/categories?post=20998"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/tags?post=20998"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}