![\"\"](\"https:\/\/nbaem.com\/wp-content\/uploads\/2025\/03\/61no2FJz0zL._SL1500_.jpg\")
<\/p>\n
Ch\u00fang nh\u1ecf nh\u01b0ng m\u1ea1nh m\u1ebd, v\u00e0 \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y trong v\u00f4 s\u1ed1 thi\u1ebft b\u1ecb ch\u00fang ta s\u1eed d\u1ee5ng h\u00e0ng ng\u00e0y.<\/p>\n
Neomagnet \u0111\u01b0\u1ee3c l\u00e0m t\u1eeb ch\u1ea5t li\u1ec7u g\u00ec?<\/h2>\n
Kh\u00f4ng ph\u1ea3i t\u1ea5t c\u1ea3 c\u00e1c nam ch\u00e2m \u0111\u1ec1u gi\u1ed1ng nhau\u2014m\u1ed9t s\u1ed1 \u0111\u01b0\u1ee3c l\u00e0m b\u1eb1ng c\u00e1c nguy\u00ean t\u1ed1 \u0111\u1ea5t hi\u1ebfm \u0111\u1ec3 \u0111\u1ea1t hi\u1ec7u su\u1ea5t c\u1ef1c cao.<\/p>\n
Neomagnet g\u1ed3m c\u00e1c th\u00e0nh ph\u1ea7n neodymium (Nd), s\u1eaft (Fe) v\u00e0 boron (B), t\u1ea1o th\u00e0nh c\u1ea5u tr\u00fac Nd\u2082Fe\u2081\u2084B mang l\u1ea1i s\u1ee9c m\u1ea1nh t\u1eeb t\u00ednh v\u01b0\u1ee3t tr\u1ed9i.<\/strong><\/p>\n C\u00f3 hai lo\u1ea1i ch\u00ednh c\u1ee7a nam ch\u00e2m neodymium:<\/p>\n C\u1ea5u tr\u00fac tinh th\u1ec3 c\u1ee7a ch\u00fang l\u00e0 t\u1ee9 di\u1ec7n, cho ph\u00e9p t\u1eeb h\u00f3a m\u1ea1nh theo m\u1ed9t h\u01b0\u1edbng c\u1ed1 \u0111\u1ecbnh. H\u01b0\u1edbng n\u00e0y r\u1ea5t quan tr\u1ecdng trong c\u00e1c \u1ee9ng d\u1ee5ng y\u00eau c\u1ea7u \u0111\u1ea7u ra t\u1eeb t\u00ednh \u0111\u00e1ng tin c\u1eady v\u00e0 t\u1eadp trung.<\/p>\n T\u00f4i \u0111\u00e3 l\u00e0m vi\u1ec7c v\u1edbi kh\u00e1ch h\u00e0ng ch\u1ecdn gi\u1eefa nam ch\u00e2m li\u00ean k\u1ebft v\u00e0 nung sintered cho c\u1ea3m bi\u1ebfn \u00f4 t\u00f4. Nam ch\u00e2m nung sintered mang l\u1ea1i ph\u1ea3n h\u1ed3i t\u1ed1t h\u01a1n, trong khi c\u00e1c l\u1ef1a ch\u1ecdn li\u00ean k\u1ebft gi\u00fap khi kh\u00f4ng gian thi\u1ebft k\u1ebf h\u1ea1n ch\u1ebf.<\/p>\n B\u1ea1n c\u00f3 th\u1ec3 ng\u1ea1c nhi\u00ean v\u1ec1 s\u1ee9c m\u1ea1nh c\u1ee7a m\u1ed9t nam ch\u00e2m neomagnet nh\u1ecf b\u00e9.<\/p>\n Nam ch\u00e2m Neodymium l\u00e0 lo\u1ea1i nam ch\u00e2m v\u0129nh c\u1eedu th\u01b0\u01a1ng m\u1ea1i m\u1ea1nh nh\u1ea5t, v\u1edbi s\u1ea3n ph\u1ea9m n\u0103ng l\u01b0\u1ee3ng t\u1ed1i \u0111a (BHmax) \u0111\u1ea1t t\u1edbi 52 MGOe.<\/strong><\/p>\n Nam ch\u00e2m neomagnet c\u00f3 m\u1ed9t s\u1ed1 \u0111\u1eb7c t\u00ednh t\u1eeb quan tr\u1ecdng:<\/p>\n Trong m\u1ed9t d\u1ef1 \u00e1n n\u0103ng l\u01b0\u1ee3ng gi\u00f3 g\u1ea7n \u0111\u00e2y, ch\u00fang t\u00f4i cung c\u1ea5p nam ch\u00e2m N52 c\u00f3 BHmax cao \u0111\u1ec3 c\u1ea3i thi\u1ec7n m\u00f4-men xo\u1eafn trong khi gi\u1ea3m k\u00edch th\u01b0\u1edbc t\u1ed5ng th\u1ec3 c\u1ee7a \u0111\u1ed9ng c\u01a1. \u0110i\u1ec1u n\u00e0y gi\u00fap gi\u1ea3m ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng 10%.<\/p>\n Ch\u00fang m\u1ea1nh m\u1ebd\u2014nh\u01b0ng d\u1ec5 t\u1ed5n th\u01b0\u01a1ng. \u0110\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao l\u1edbp ph\u1ee7 l\u00e0 c\u1ea7n thi\u1ebft.<\/p>\n Nam ch\u00e2m neodymium d\u1ec5 b\u1ecb \u0103n m\u00f2n v\u00e0 th\u01b0\u1eddng y\u00eau c\u1ea7u l\u1edbp ph\u1ee7 b\u1ea3o v\u1ec7 nh\u01b0 Ni-Cu-Ni, epoxy ho\u1eb7c m\u1ea1 v\u00e0ng.<\/strong><\/p>\n V\u1eadt li\u1ec7u NdFeB d\u1ec5 b\u1ecb oxy h\u00f3a trong m\u00f4i tr\u01b0\u1eddng \u1ea9m \u01b0\u1edbt. \u0110\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao l\u1edbp ph\u1ee7 r\u1ea5t quan tr\u1ecdng, \u0111\u1eb7c bi\u1ec7t trong c\u00e1c \u1ee9ng d\u1ee5ng y t\u1ebf ho\u1eb7c h\u00e0ng h\u1ea3i.<\/p>\n C\u00e1c l\u1edbp ph\u1ee7 ph\u1ed5 bi\u1ebfn:<\/strong><\/p>\n \u0110\u1ed1i v\u1edbi m\u1ed9t kh\u00e1ch h\u00e0ng trong ng\u00e0nh c\u00f4ng nghi\u1ec7p d\u1ee5ng c\u1ee5 ph\u1eabu thu\u1eadt, ch\u00fang t\u00f4i \u0111\u00e3 \u0111\u1ec1 xu\u1ea5t nam ch\u00e2m N42 ph\u1ee7 v\u00e0ng. Ch\u00fang cung c\u1ea5p hi\u1ec7u su\u1ea5t \u1ed5n \u0111\u1ecbnh, kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch sinh h\u1ecdc v\u00e0 tu\u1ed5i th\u1ecd l\u00e2u h\u01a1n.<\/p>\n C\u00f3 kh\u1ea3 n\u0103ng, b\u1ea1n s\u1eed d\u1ee5ng nam ch\u00e2m neodymium h\u00e0ng ng\u00e0y\u2014m\u00e0 kh\u00f4ng h\u1ec1 hay bi\u1ebft.<\/p>\n Nam ch\u00e2m neodymium \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong \u0111i\u1ec7n t\u1eed, ph\u01b0\u01a1ng ti\u1ec7n \u0111i\u1ec7n, turbine gi\u00f3 v\u00e0 thi\u1ebft b\u1ecb y t\u1ebf nh\u1edd k\u00edch th\u01b0\u1edbc nh\u1ecf g\u1ecdn v\u00e0 s\u1ee9c m\u1ea1nh t\u1eeb tr\u01b0\u1eddng m\u1ea1nh m\u1ebd.<\/strong><\/p>\n Theo kinh nghi\u1ec7m c\u1ee7a t\u00f4i, m\u1ed9t trong nh\u1eefng \u1ee9ng d\u1ee5ng th\u00fa v\u1ecb nh\u1ea5t l\u00e0 trong \u0111\u1ed9ng c\u01a1 kh\u00f4ng ch\u1ed5i than t\u1ed1c \u0111\u1ed9 cao. Nam ch\u00e2m neodymium cho ph\u00e9p k\u1ef9 s\u01b0 t\u0103ng c\u00f4ng su\u1ea5t m\u00e0 kh\u00f4ng l\u00e0m t\u0103ng k\u00edch th\u01b0\u1edbc ho\u1eb7c tr\u1ecdng l\u01b0\u1ee3ng.<\/p>\n Nh\u1eefng nam ch\u00e2m n\u00e0y m\u1ea1nh m\u1ebd\u2014nh\u01b0ng c\u0169ng d\u1ec5 v\u1ee1 v\u00e0 nguy hi\u1ec3m n\u1ebfu x\u1eed l\u00fd kh\u00f4ng c\u1ea9n th\u1eadn.<\/p>\n C\u1ea9n th\u1eadn khi x\u1eed l\u00fd nam ch\u00e2m neomagnets \u0111\u1ec3 tr\u00e1nh b\u1ecb th\u01b0\u01a1ng, h\u01b0 h\u1ecfng ho\u1eb7c g\u00e2y nhi\u1ec5u \u0111i\u1ec7n t\u1eed.<\/strong><\/p>\n M\u1ed9t kh\u00e1ch h\u00e0ng \u0111\u00e3 g\u1eb7p ph\u1ea3i v\u00e0i nam ch\u00e2m b\u1ecb n\u1ee9t v\u1ee1 trong qu\u00e1 tr\u00ecnh v\u1eadn chuy\u1ec3n. Sau khi chuy\u1ec3n sang \u0111\u00f3ng g\u00f3i ch\u00e2n kh\u00f4ng c\u00f3 \u0111\u1ec7m x\u1ed1p, h\u1ecd b\u00e1o c\u00e1o kh\u00f4ng c\u00f3 v\u1ee1 trong v\u00f2ng s\u00e1u th\u00e1ng.<\/p>\n Kh\u00e1m ph\u00e1 kho\u00e1ng s\u1ea3n \u0111\u1ea5t hi\u1ebfm g\u00e2y lo ng\u1ea1i\u2014nh\u01b0ng quy \u0111\u1ecbnh ng\u00e0y c\u00e0ng ch\u1eb7t ch\u1ebd h\u01a1n.<\/p>\n Nam ch\u00e2m neodymium ph\u1ea3i \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n m\u00f4i tr\u01b0\u1eddng nh\u01b0 ROHS v\u00e0 REACH, v\u00e0 ngu\u1ed3n cung th\u01b0\u1eddng y\u00eau c\u1ea7u khai b\u00e1o kho\u00e1ng s\u1ea3n xung \u0111\u1ed9t.<\/strong><\/p>\n Khai th\u00e1c \u0111\u1ea5t hi\u1ebfm nh\u01b0 neodymium c\u00f3 th\u1ec3 g\u00e2y h\u1ea1i cho h\u1ec7 sinh th\u00e1i. \u0110\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao nhi\u1ec1u nh\u00e0 s\u1ea3n xu\u1ea5t, bao g\u1ed3m ch\u00fang t\u00f4i, h\u1ee3p t\u00e1c v\u1edbi c\u00e1c nh\u00e0 cung c\u1ea5p tu\u00e2n th\u1ee7:<\/p>\n G\u1ea7n \u0111\u00e2y ch\u00fang t\u00f4i \u0111\u00e3 gi\u00fap m\u1ed9t kh\u00e1ch h\u00e0ng ch\u00e2u \u00c2u t\u1ed5ng h\u1ee3p c\u00e1c t\u00e0i li\u1ec7u REACH cho d\u00f2ng s\u1ea3n ph\u1ea9m NdFeB. Ch\u00fang t\u00f4i cung c\u1ea5p kh\u1ea3 n\u0103ng truy xu\u1ea5t ngu\u1ed3n g\u1ed1c \u0111\u1ea7y \u0111\u1ee7 v\u1ec1 m\u1ecf, \u0111\u1ea3m b\u1ea3o gi\u1ea5y ph\u00e9p nh\u1eadp kh\u1ea9u c\u1ee7a h\u1ecd \u0111\u01b0\u1ee3c th\u00f4ng qua m\u00e0 kh\u00f4ng g\u1eb7p tr\u1edf ng\u1ea1i.<\/p>\n Nam ch\u00e2m Neodymium\u2014ho\u1eb7c nam ch\u00e2m neomagnet\u2014l\u00e0 x\u01b0\u01a1ng s\u1ed1ng c\u1ee7a t\u1eeb tr\u01b0\u1eddng hi\u1ec7n \u0111\u1ea1i. \u0110\u1ed9 m\u1ea1nh, k\u00edch th\u01b0\u1edbc v\u00e0 t\u00ednh linh ho\u1ea1t c\u1ee7a ch\u00fang khi\u1ebfn ch\u00fang tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn l\u00fd t\u01b0\u1edfng cho c\u00e1c gi\u1ea3i ph\u00e1p c\u00f4ng ngh\u1ec7 v\u00e0 n\u0103ng l\u01b0\u1ee3ng. Nh\u01b0ng ch\u00fang ph\u1ea3i \u0111\u01b0\u1ee3c x\u1eed l\u00fd v\u00e0 ngu\u1ed3n cung \u1ee9ng m\u1ed9t c\u00e1ch c\u00f3 tr\u00e1ch nhi\u1ec7m.<\/p>\n Nam ch\u00e2m neomagnet l\u00e0 g\u00ec? B\u1ea1n \u0111\u00e3 t\u1eebng t\u1ef1 h\u1ecfi \u0111i\u1ec1u g\u00ec t\u1ea1o n\u00ean s\u1ee9c m\u1ea1nh cho xe \u0111i\u1ec7n ho\u1eb7c l\u00e0m cho \u0111i\u1ec7n tho\u1ea1i c\u1ee7a b\u1ea1n rung \u0111\u1ed9ng ch\u01b0a? C\u00f3 th\u1ec3 \u0111\u00f3 l\u00e0 m\u1ed9t nam ch\u00e2m neodymium \u0111ang ho\u1ea1t \u0111\u1ed9ng. Nam ch\u00e2m neodymium\u2014c\u00f2n g\u1ecdi l\u00e0 neomagnet\u2014l\u00e0 lo\u1ea1i nam ch\u00e2m v\u0129nh c\u1eedu m\u1ea1nh nh\u1ea5t \u0111\u01b0\u1ee3c l\u00e0m t\u1eeb neodymium, s\u1eaft v\u00e0 boron (NdFeB). Ch\u00fang nh\u1ecf nh\u01b0ng m\u1ea1nh m\u1ebd, v\u00e0 ch\u00fang<\/p>","protected":false},"author":1,"featured_media":1496,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_mi_skip_tracking":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1694","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"jetpack_featured_media_url":"https:\/\/nbaem.com\/wp-content\/uploads\/2025\/03\/61no2FJz0zL._SL1500_.jpg","_links":{"self":[{"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/posts\/1694","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/comments?post=1694"}],"version-history":[{"count":4,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/posts\/1694\/revisions"}],"predecessor-version":[{"id":1698,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/posts\/1694\/revisions\/1698"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/media\/1496"}],"wp:attachment":[{"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/media?parent=1694"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/categories?post=1694"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/tags?post=1694"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}C\u00e1c lo\u1ea1i v\u00e0 c\u1ea5u tr\u00fac c\u1ee7a nam ch\u00e2m NdFeB<\/h3>\n
\n
\n\n
\n \nLo\u1ea1i<\/th>\n \u0110\u1ed9 m\u1ea1nh t\u1eeb t\u00ednh<\/th>\n Linh ho\u1ea1t<\/th>\n Gi\u00e1 th\u00e0nh<\/th>\n<\/tr>\n<\/thead>\n \n NdFeB nung sintered<\/td>\n R\u1ea5t cao<\/td>\n Th\u1ea5p<\/td>\n Cao h\u01a1n<\/td>\n<\/tr>\n \n NdFeB li\u00ean k\u1ebft<\/td>\n V\u1eeba ph\u1ea3i<\/td>\n Cao<\/td>\n Th\u1ea5p h\u01a1n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Neomagnet c\u00f3 \u0111\u1ed9 m\u1ea1nh nh\u01b0 th\u1ebf n\u00e0o?<\/h2>\n
T\u00ednh ch\u1ea5t t\u1eeb c\u1ee7a NdFeB<\/h3>\n
\n
\n\n
\n \nC\u1ea5p \u0111\u1ed9<\/th>\n BHmax (MGOe)<\/th>\n Nhi\u1ec7t \u0111\u1ed9 t\u1ed1i \u0111a (\u00b0C)<\/th>\n<\/tr>\n<\/thead>\n \n N35<\/td>\n 35<\/td>\n 80<\/td>\n<\/tr>\n \n N52<\/td>\n 52<\/td>\n 60<\/td>\n<\/tr>\n \n N42SH<\/td>\n 42<\/td>\n 150<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n B\u1ea1n l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 b\u1ea3o v\u1ec7 nam ch\u00e2m neodymium?<\/h2>\n
X\u1eed l\u00fd b\u1ec1 m\u1eb7t v\u00e0 l\u1edbp ph\u1ee7<\/h3>\n
\n
Neomagnets \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u1edf \u0111\u00e2u?<\/h2>\n
\u1ee8ng d\u1ee5ng th\u1ef1c t\u1ebf<\/h3>\n
\n\n
\n \nNg\u00e0nh c\u00f4ng nghi\u1ec7p<\/th>\n Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng<\/th>\n<\/tr>\n<\/thead>\n \n Thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed ti\u00eau d\u00f9ng<\/td>\n Loa \u0111i\u1ec7n tho\u1ea1i, \u0111\u1ed9ng c\u01a1 rung<\/td>\n<\/tr>\n \n \u00d4 t\u00f4<\/td>\n \u0110\u1ed9ng c\u01a1 xe \u0111i\u1ec7n, c\u1ea3m bi\u1ebfn ABS<\/td>\n<\/tr>\n \n N\u0103ng l\u01b0\u1ee3ng t\u00e1i t\u1ea1o<\/td>\n M\u00e1y ph\u00e1t turbine gi\u00f3<\/td>\n<\/tr>\n \n Ch\u0103m s\u00f3c s\u1ee9c kh\u1ecfe<\/td>\n M\u00e1y MRI, d\u1ee5ng c\u1ee5 ph\u1eabu thu\u1eadt<\/td>\n<\/tr>\n \n C\u00f4ng nghi\u1ec7p<\/td>\n B\u1ed9 ph\u00e2n lo\u1ea1i t\u1eeb, thi\u1ebft b\u1ecb n\u00e2ng<\/td>\n<\/tr>\n \n DIY & S\u1edf th\u00edch c\u00e1 nh\u00e2n<\/td>\n Kh\u00f3a nam ch\u00e2m, b\u1ed9 d\u1ee5ng c\u1ee5 khoa h\u1ecdc<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 x\u1eed l\u00fd an to\u00e0n c\u00e1c nam ch\u00e2m neodymium?<\/h2>\n
L\u1eddi khuy\u00ean an to\u00e0n khi x\u1eed l\u00fd<\/h3>\n
\n
V\u1ec1 quy \u0111\u1ecbnh v\u00e0 b\u1ec1n v\u1eefng th\u00ec sao?<\/h2>\n
Quan ng\u1ea1i v\u1ec1 m\u00f4i tr\u01b0\u1eddng v\u00e0 tu\u00e2n th\u1ee7<\/h3>\n
\n
K\u1ebft lu\u1eadn<\/h2>\n
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