V\u00e0ng thu\u1ed9c v\u01b0\u01a1ng qu\u1ed1c c\u1ee7a c\u00e1c kim lo\u1ea1i con c\u01b0ng. T\u1eeb x\u01b0a \u0111\u1ebfn nay, v\u00e0ng \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u00fac ti\u1ec1n qu\u00fd, \u0111\u01b0\u1ee3c ch\u1ebf t\u00e1c th\u00e0nh c\u00e1c \u0111\u1ed3 n\u1eef trang qu\u00fd gi\u00e1. Trong con m\u1eaft c\u1ee7a m\u1ecdi ng\u01b0\u1eddi, v\u00e0ng \u0111\u01b0\u1ee3c xem nh\u01b0 minh ch\u1ee9ng cho s\u1ef1 gi\u00e0u c\u00f3.<\/p>\n\n\n\n
V\u00e0ng ngo\u00e0i vi\u1ec7c \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 l\u00e0 qu\u00fd hi\u1ebfm, c\u00f2n c\u00f3 nhi\u1ec1u t\u00ednh ch\u1ea5t ho\u00e1 h\u1ecdc, v\u1eadt l\u00fd \u0111\u1eb7c bi\u1ec7t kh\u00e1c. V\u00ec v\u1eady v\u00e0ng \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o d\u1ef1 tr\u1eef c\u1ee7a qu\u1ed1c gia v\u00e0 d\u1ea7n d\u1ea7n t\u1ecf ra c\u00f3 nhi\u1ec1u t\u00e1c d\u1ee5ng to l\u1edbn trong nhi\u1ec1u l\u0129nh v\u1ef1c khoa h\u1ecdc, k\u1ef9 thu\u1eadt.<\/p>\n\n\n\n
V\u00e0ng l\u00e0 kim lo\u1ea1i r\u1ea5t d\u1ec5 k\u00e9o s\u1ee3i: 1 g v\u00e0ng c\u00f3 th\u1ec3 k\u00e9o th\u00e0nh s\u1ee3i d\u00e2y m\u1ea3nh d\u00e0i \u0111\u1ebfn 160 m, c\u00f3 th\u1ec3 d\u00e1t th\u00e0nh l\u00e1 m\u1ecfng c\u00f3 di\u1ec7n t\u00edch 9 m2 v\u1edbi \u0111\u1ed9 d\u00e0y 1\/50.000 mm. V\u1edbi l\u00e1 v\u00e0ng m\u1ecfng n\u00e0y ng\u01b0\u1eddi ta h\u1ea7u nh\u01b0 c\u00f3 th\u1ec3 nh\u00ecn xuy\u00ean qua \u0111\u01b0\u1ee3c, nh\u01b0ng l\u1ea1i c\u1ea3n \u0111\u01b0\u1ee3c tia t\u1eed ngo\u1ea1i. V\u00ec v\u1eady l\u00e1 v\u00e0ng m\u1ecfng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c m\u1eb7t n\u1ea1 ph\u00f2ng h\u1ed9 cho c\u00e1c phi c\u00f4ng v\u0169 tr\u1ee5, l\u00e0m v\u1ecf b\u1ecdc k\u00edn c\u00e1c bu\u1ed3ng trong con t\u00e0u v\u0169 tr\u1ee5, v\u00e0ng l\u00e1 m\u1ecfng ph\u1ea3n x\u1ea1 m\u1ea1nh c\u00e1c tia h\u1ed3ng ngo\u1ea1i, n\u00ean d\u00f9ng trong c\u00e1c t\u1ee7 s\u1ea5y b\u1eb1ng tia h\u1ed3ng ngo\u1ea1i c\u0169ng nh\u01b0 trong c\u00e1c trang b\u1ecb qu\u00e2n s\u1ef1 hi\u1ec7n \u0111\u1ea1i, nh\u01b0 \u1edf c\u00e1c m\u00e1y \u0111o d\u00f9ng tia h\u1ed3ng ngo\u1ea1i.<\/p>\n\n\n\n
Nh\u01b0 ng\u01b0\u1eddi ta th\u01b0\u1eddng n\u00f3i “v\u00e0ng th\u1eadt (thi\u1ec7t v\u00e0ng) kh\u00f4ng s\u1ee3 chi l\u1eeda”, nhi\u1ec7t \u0111\u1ed9 n\u00f3ng ch\u1ea3y c\u1ee7a v\u00e0ng \u0111\u1ebfn 1061,43\u00b0C, n\u00ean v\u00e0ng c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c nhi\u1ec7t \u0111\u1ed9 cao. V\u00e0ng l\u00e0 kim lo\u1ea1i c\u00f3 t\u00ednh b\u1ec1n ho\u00e1 h\u1ecdc. N\u00f3i chung c\u00e1c axit v\u00e0 ki\u1ec1m kh\u00f4ng c\u00f3 t\u00e1c d\u1ee5ng \u0111\u1ed1i v\u1edbi v\u00e0ng. V\u00ec v\u1eady nhi\u1ec1u lo\u1ea1i trang thi\u1ebft b\u1ecb trong m\u00e1y bay, trong c\u00e1c con t\u00e0u v\u0169 tr\u1ee5, c\u00e1c v\u1ec7 tinh nh\u00e2n t\u1ea1o c\u1ea7n c\u00f3 c\u00e1c b\u1ed9 \u0111\u00f3ng, ng\u1eaft \u0111i\u1ec7n c\u00f3 ti\u1ebfp x\u00fac t\u1ed1t, c\u1ea7n c\u00f3 \u0111\u1ed9 d\u1eabn \u0111i\u1ec7n tin c\u1eady, kh\u00f4ng b\u1ecb oxy ho\u00e1 \u1edf nhi\u1ec7t \u0111\u1ed9 cao, ng\u01b0\u1eddi ta ph\u1ea3i ch\u1ebf t\u1ea1o b\u1eb1ng v\u00e0ng hay h\u1ee3p kim c\u1ee7a v\u00e0ng. V\u00e0ng v\u00e0 h\u1ee3p kim v\u00e0ng c\u00f3 \u0111\u1ed9 b\u1ec1n ho\u00e1 h\u1ecdc cao n\u00ean \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 ch\u1ebf t\u1ea1o \u0111\u1ea7u kim phun, c\u00e1c \u0111\u1ea7u n\u1ed1i \u1edf c\u00e1c pin trong c\u00e1c con t\u00e0u v\u0169 tr\u1ee5. V\u00e0ng v\u00e0 c\u00e1c h\u1ee3p kim c\u1ee7a v\u00e0ng c\u0169ng \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 ch\u1ebf t\u1ea1o c\u00e1c h\u1ee3p kim c\u00f3 tr\u00ed nh\u1edb, v\u1eadt li\u1ec7u si\u00eau d\u1eabn v\u00e0 c\u00e1c linh ki\u1ec7n, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c m\u00e1y \u0111i\u1ec1u tr\u1ecb y h\u1ecdc, c\u00f4ng nghi\u1ec7p \u0111i\u1ec7n t\u1eed, m\u00e1y t\u00ednh, ng\u01b0\u1eddi m\u00e1y, trong h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 v\u00e0 nhi\u1ec1u l\u0129nh v\u1ef1c khoa h\u1ecdc m\u1edbi kh\u00e1c.<\/p>\n\n\n\n
T\u1eeb kho\u00e1: V\u00e0ng.<\/p>\n\n\n\n
<\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"
V\u00e0ng thu\u1ed9c v\u01b0\u01a1ng qu\u1ed1c c\u1ee7a c\u00e1c kim lo\u1ea1i con c\u01b0ng. T\u1eeb x\u01b0a \u0111\u1ebfn nay, v\u00e0ng \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u00fac ti\u1ec1n qu\u00fd, \u0111\u01b0\u1ee3c ch\u1ebf t\u00e1c th\u00e0nh c\u00e1c \u0111\u1ed3 n\u1eef trang qu\u00fd gi\u00e1. Trong con m\u1eaft c\u1ee7a m\u1ecdi ng\u01b0\u1eddi, v\u00e0ng \u0111\u01b0\u1ee3c xem nh\u01b0 minh ch\u1ee9ng cho s\u1ef1 gi\u00e0u c\u00f3. V\u00e0ng ngo\u00e0i vi\u1ec7c \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 l\u00e0 qu\u00fd hi\u1ebfm, […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[8,15],"tags":[],"class_list":["post-7821","post","type-post","status-publish","format-standard","hentry","category-hoa-hoc","category-hoi-dap-khoa-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/7821","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=7821"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/7821\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=7821"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=7821"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=7821"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}