Pr\u00e1\u0161ek nitridu b\u00f3ru se pou\u017e\u00edv\u00e1 v mnoha pr\u016fmyslov\u00fdch odv\u011btv\u00edch, aby spl\u0148oval rostouc\u00ed po\u017eadavky na leh\u010d\u00ed a pevn\u011bj\u0161\u00ed v\u00fdrobky s vy\u0161\u0161\u00ed \u00fa\u010dinnost\u00ed a v\u00fdkonem. Takov\u00e9 pokro\u010dil\u00e9 materi\u00e1ly vy\u017eaduj\u00ed p\u0159esnost, konzistenci a \u010distotu - co\u017e rafinovan\u00e9 boritany poskytuj\u00ed.<\/p>\n
\u0160estihrann\u00fd nitrid b\u00f3ru (h-BN) je elektroizola\u010dn\u00ed a m\u011bkk\u00fd materi\u00e1l s vynikaj\u00edc\u00edmi vlastnostmi pro p\u0159enos elektrick\u00e9 energie a z\u00e1rove\u0148 odoln\u00fd v\u016f\u010di vysok\u00fdm teplot\u00e1m a oxidaci.<\/p>\n
Pr\u00e1\u0161ky nitridu boru maj\u00ed mnohostrann\u00e9 vyu\u017eit\u00ed. \u010casto se p\u0159id\u00e1vaj\u00ed do zal\u00e9vac\u00edch hmot, olej\u016f a maziv, aby zv\u00fd\u0161ily tepelnou vodivost a elektrickou izolaci. Krom\u011b toho pr\u00e1\u0161ky BN slou\u017e\u00ed jako such\u00e1 pr\u00e1\u0161kov\u00e1 maziva, kter\u00e1 zabra\u0148uj\u00ed lepen\u00ed nebo zad\u00edr\u00e1n\u00ed, a tak\u00e9 poskytuj\u00ed such\u00e9 maz\u00e1n\u00ed u stroj\u016f, kter\u00e9 pot\u0159ebuj\u00ed such\u00e9 maz\u00e1n\u00ed mezi operacemi. A kone\u010dn\u011b, tyto pr\u00e1\u0161ky mohou b\u00fdt dokonce ide\u00e1ln\u00ed volbou pro vytla\u010dov\u00e1n\u00ed hlin\u00edku d\u00edky schopnosti BN zamezit tvorb\u011b kou\u0159e a sou\u010dasn\u011b umo\u017enit snadn\u00e9 klouz\u00e1n\u00ed polotovar\u016f b\u011bhem vytla\u010dovac\u00edch proces\u016f Pr\u00e1\u0161ky BN jsou skv\u011blou volbou, kter\u00e1 umo\u017e\u0148uje hladk\u00fd pr\u016fb\u011bh vytla\u010dovac\u00edch proces\u016f!<\/p>\n
BN m\u00e1 n\u011bkolik jedine\u010dn\u00fdch vlastnost\u00ed, kter\u00e9 se u jin\u00fdch keramick\u00fdch materi\u00e1l\u016f nevyskytuj\u00ed, v\u010detn\u011b n\u00edzk\u00e9 hustoty a chemick\u00e9 inertnosti (odolnost v\u016f\u010di kyselin\u00e1m a roztaven\u00fdm kov\u016fm), vynikaj\u00edc\u00ed odolnosti v\u016f\u010di vysok\u00fdm teplot\u00e1m, dobr\u00e9 obrobitelnosti a odolnosti v\u016f\u010di tepeln\u00fdm \u0161ok\u016fm. hexagon\u00e1ln\u00ed nitrid b\u00f3ru (h-BN) se vyzna\u010duje strukturami podobn\u00fdmi grafenu, kter\u00e9 jsou izoelektronick\u00e9 s uhl\u00edkem, tak\u017ee je m\u011bkk\u00fd a mazlav\u00fd; kubick\u00fd nitrid b\u00f3ru (c-BN) m\u00e1 naopak v\u00fdjime\u010dnou tvrdost, kter\u00e1 je druh\u00e1 nejvy\u0161\u0161\u00ed po diamantu; p\u0159i vysok\u00fdch teplot\u00e1ch nereaguj\u00ed \u017e\u00e1dn\u00e9 kovy, tak\u017ee tento materi\u00e1l je vynikaj\u00edc\u00ed volbou pro \u0159ezn\u00e9 n\u00e1stroje nebo brusn\u00e9 kotou\u010de.<\/p>\n
\u0160estihrann\u00fd nitrid b\u00f3ru (hBN) je v\u00fdjime\u010dn\u00fd keramick\u00fd materi\u00e1l s v\u00fdjime\u010dn\u00fdmi vlastnostmi. D\u00edky n\u00edzk\u00e9 hustot\u011b, vynikaj\u00edc\u00ed tepeln\u00e9 vodivosti, elektrick\u00e9mu odporu a chemick\u00e9 inertnosti nab\u00edz\u00ed odolnost v\u016f\u010di kyselin\u00e1m a tekut\u00fdm kov\u016fm i dal\u0161\u00edm chemik\u00e1li\u00edm.<\/p>\n
HBN se \u0161iroce pou\u017e\u00edv\u00e1 jako p\u0159\u00edsada do plast\u016f a zal\u00e9vac\u00edch hmot pro zv\u00fd\u0161en\u00ed tepeln\u00e9 vodivosti bez vlivu na elektrickou izolaci a jako such\u00e9 pr\u00e1\u0161kov\u00e9 mazivo v aplikac\u00edch, jako je obr\u00e1b\u011bn\u00ed a odl\u00e9v\u00e1n\u00ed, kde je kritick\u00e9 sn\u00ed\u017een\u00ed hluku.<\/p>\n
A\u010dkoli je pr\u00e1\u0161ek BN snadno zpracovateln\u00fd materi\u00e1l, jeho n\u00edzk\u00e1 teoretick\u00e1 hustota \u010din\u00ed v\u00fdrobu hust\u00fdch sypk\u00fdch materi\u00e1l\u016f n\u00e1ro\u010dnou. V t\u00e9to experiment\u00e1ln\u00ed studii v\u0161ak byla p\u0159edstavena nov\u00e1 metoda sp\u00e9k\u00e1n\u00ed hexagon\u00e1ln\u00edho nitridu boru za \u00fa\u010delem dosa\u017een\u00ed vy\u0161\u0161\u00edch hustot s pou\u017eit\u00edm kubick\u00e9ho nitridu boru jako sp\u00e9kac\u00ed p\u0159\u00edsady.<\/p>\n
Pr\u00e1\u0161ek nitridu b\u00f3ru m\u00e1 vysokou tepelnou vodivost a lze jej pou\u017e\u00edt k v\u00fdrob\u011b keramick\u00fdch sou\u010d\u00e1st\u00ed, kter\u00e9 mus\u00ed odol\u00e1vat vysok\u00fdm teplot\u00e1m. Krom\u011b toho je chemicky odoln\u00fd v\u016f\u010di kov\u016fm a sklu a z\u00e1rove\u0148 se snadno obr\u00e1b\u00ed - v\u0161echny tyto vlastnosti \u010din\u00ed z nitridu boru vynikaj\u00edc\u00ed n\u00e1hradu maziv v prost\u0159ed\u00ed zpracov\u00e1n\u00ed kov\u016f.<\/p>\n
Hexagon\u00e1ln\u00ed nitrid b\u00f3ru (hBN), podobn\u011b jako grafit, lze vyrobit reakc\u00ed b\u00f3ru a dus\u00edku za extr\u00e9mn\u00edch podm\u00ednek. P\u0159i zah\u0159\u00edv\u00e1n\u00ed se v\u0161ak hBN m\u011bn\u00ed na kubick\u00fd nitrid b\u00f3ru, kter\u00fd m\u00e1 strukturu podobnou diamantu.<\/p>\n
\u0160estihrann\u00fd nitrid b\u00f3ru je vynikaj\u00edc\u00edm materi\u00e1lem pro ochrann\u00e9 trubky termo\u010dl\u00e1nk\u016f a izola\u010dn\u00ed pouzdra s n\u00edzk\u00fdm koeficientem rozta\u017enosti, vynikaj\u00edc\u00ed tepelnou vodivost\u00ed a v\u00fdjime\u010dnou mazivost\u00ed.<\/p>\n
Nitrid b\u00f3ru lze pou\u017e\u00edt v mnoha aplikac\u00edch, od elektroniky a vysokoteplotn\u00edho prost\u0159ed\u00ed a\u017e po leteck\u00fd pr\u016fmysl. Jeho v\u00fdjime\u010dn\u00e1 tepeln\u00e1 vodivost a chemick\u00e1 inertnost umo\u017e\u0148uj\u00ed pokro\u010dil\u00e9 v\u00fdkony; nav\u00edc m\u00e1 vysokou nosnost a lze jej snadno opracov\u00e1vat ve stavu lisov\u00e1n\u00ed za tepla a vyr\u00e1b\u011bt z n\u011bj slo\u017eit\u00e9 d\u00edly.<\/p>\n
V\u00fdroba nitridu b\u00f3ru p\u0159edstavuje jedine\u010dnou v\u00fdzvu vzhledem k jeho hexagon\u00e1ln\u00ed desti\u010dkov\u00e9 struktu\u0159e; b\u011b\u017en\u00e9 metody kontroly kvality mohou b\u00fdt pro tento materi\u00e1l obt\u00ed\u017en\u00e9 nebo dokonce ne\u00fa\u010dinn\u00e9. Prevence aglomerace proto mus\u00ed b\u00fdt prioritou.<\/p>\n
K rozbit\u00ed aglomer\u00e1t\u016f a udr\u017een\u00ed separace \u010d\u00e1stic se \u010dasto pou\u017e\u00edvaj\u00ed pokro\u010dil\u00e9 techniky zpracov\u00e1n\u00ed, jako jsou ultrazvukov\u00e9 disperg\u00e1tory, m\u00edch\u00e1n\u00ed vysokou smykovou rychlost\u00ed a specializovan\u00e9 techniky mlet\u00ed, co\u017e vede ke zlep\u0161en\u00ed kompatibility s matricov\u00fdmi materi\u00e1ly a rovnom\u011brn\u00e9mu rozlo\u017een\u00ed desti\u010dek h-BN.<\/p>\n
Hexagon\u00e1ln\u00ed nitrid b\u00f3ru (h-BN) se m\u016f\u017ee pochlubit pozoruhodn\u00fdmi izola\u010dn\u00edmi vlastnostmi, kter\u00e9 se vymykaj\u00ed b\u011b\u017en\u00fdm materi\u00e1lov\u00fdm v\u011bd\u00e1m. Keramika BN nab\u00edz\u00ed tepelnou vodivost srovnatelnou s kovy a z\u00e1rove\u0148 spolehliv\u00e9 elektroizola\u010dn\u00ed vlastnosti, kter\u00e9 zabra\u0148uj\u00ed elektrick\u00e9mu sledov\u00e1n\u00ed. D\u00edky t\u011bmto dvoj\u00edm vlastnostem je keramika z nitridu b\u00f3ru neocenitelnou sou\u010d\u00e1st\u00ed PVD, CVD a plazmov\u00fdch syst\u00e9m\u016f, kter\u00e9 pot\u0159ebuj\u00ed spolehliv\u00e9 izol\u00e1tory proti elektrick\u00e9mu sledov\u00e1n\u00ed.<\/p>\n
Elektrick\u00e9 sledov\u00e1n\u00ed je st\u00e1le \u010dast\u011bj\u0161\u00ed p\u0159\u00ed\u010dinou selh\u00e1n\u00ed energetick\u00fdch syst\u00e9m\u016f ve vlhk\u00e9m prost\u0159ed\u00ed a jeho rostouc\u00ed v\u00fdskyt podn\u00edtil popt\u00e1vku po materi\u00e1lech, kter\u00e9 poskytuj\u00ed odolnost proti elektrick\u00e9mu sledov\u00e1n\u00ed v t\u011bchto vlhk\u00fdch podm\u00ednk\u00e1ch.<\/p>\n
Kompozitn\u00ed materi\u00e1ly na b\u00e1zi nitridu b\u00f3ru byly vyvinuty speci\u00e1ln\u011b pro \u0159e\u0161en\u00ed t\u011bchto pot\u0159eb, proto\u017ee poskytuj\u00ed vynikaj\u00edc\u00ed odolnost proti sledov\u00e1n\u00ed ve vlhk\u00e9m prost\u0159ed\u00ed a z\u00e1rove\u0148 \u00fa\u010dinn\u011b odv\u00e1d\u011bj\u00ed teplo a nab\u00edzej\u00ed vynikaj\u00edc\u00ed odolnost proti korozi. Krystalovou strukturu h-BN lze nav\u00edc b\u011bhem v\u00fdroby p\u0159izp\u016fsobit tak, aby se optimalizovala tepeln\u00e1 vodivost v ur\u010dit\u00fdch sm\u011brech a zv\u00fd\u0161il se tak v\u00fdkon.<\/p>","protected":false},"excerpt":{"rendered":"
Boron Nitride Powder and Its Applications Boron nitride powder is used in multiple industries to meet growing demands for lighter, […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ngg_post_thumbnail":0,"footnotes":""},"categories":[4],"tags":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/boronnitrideceramic.com\/cs\/wp-json\/wp\/v2\/posts\/323"}],"collection":[{"href":"https:\/\/boronnitrideceramic.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/boronnitrideceramic.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/boronnitrideceramic.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/boronnitrideceramic.com\/cs\/wp-json\/wp\/v2\/comments?post=323"}],"version-history":[{"count":1,"href":"https:\/\/boronnitrideceramic.com\/cs\/wp-json\/wp\/v2\/posts\/323\/revisions"}],"predecessor-version":[{"id":324,"href":"https:\/\/boronnitrideceramic.com\/cs\/wp-json\/wp\/v2\/posts\/323\/revisions\/324"}],"wp:attachment":[{"href":"https:\/\/boronnitrideceramic.com\/cs\/wp-json\/wp\/v2\/media?parent=323"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/boronnitrideceramic.com\/cs\/wp-json\/wp\/v2\/categories?post=323"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/boronnitrideceramic.com\/cs\/wp-json\/wp\/v2\/tags?post=323"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}