Vl\u00e1kna z karbidu k\u0159em\u00edku (SiC Fibre) jsou extr\u00e9mn\u011b odoln\u00fd a z\u00e1rove\u0148 lehk\u00fd materi\u00e1l vhodn\u00fd pro vysokoteplotn\u00ed aplikace, kter\u00fd se vyzna\u010duje pozoruhodn\u00fdmi vlastnostmi, jako je odolnost proti oxidaci p\u0159i vysok\u00fdch teplot\u00e1ch, tvrdost, tuhost, tepeln\u00e1 stabilita a odolnost proti korozi.<\/p>\n
Vl\u00e1kna SiC vynikaj\u00ed p\u0159i pr\u00e1ci v prost\u0159ed\u00ed s vysok\u00fdm radia\u010dn\u00edm z\u00e1\u0159en\u00edm, d\u00edky \u010demu\u017e jsou obl\u00edben\u00e1 u provozovatel\u016f jadern\u00fdch elektr\u00e1ren a pou\u017e\u00edvaj\u00ed se tak\u00e9 v kompozitech s keramickou matric\u00ed pro zlep\u0161en\u00ed pevnosti a utajen\u00ed sou\u010d\u00e1st\u00ed leteck\u00fdch motor\u016f.<\/p>\n
Karbid k\u0159em\u00edku je ide\u00e1ln\u00edm materi\u00e1lem pro vytv\u00e1\u0159en\u00ed vysoce v\u00fdkonn\u00fdch kompozit\u016f s kovovou matric\u00ed (MMC), kter\u00e9 p\u0159i pou\u017eit\u00ed jako v\u00fdztu\u017ee nab\u00edzej\u00ed v\u00fdrazn\u00e9 zlep\u0161en\u00ed z hlediska odolnosti proti ot\u011bru, m\u011brn\u00e9 pevnosti, hou\u017eevnatosti, koeficientu tepeln\u00e9 rozta\u017enosti a elektrick\u00e9 vodivosti. Karbid k\u0159em\u00edku nav\u00edc poskytuje dvojn\u00e1sobnou pevnost a 20% vy\u0161\u0161\u00ed tepelnou odolnost ve srovn\u00e1n\u00ed se superslitinami na b\u00e1zi niklu, p\u0159esto\u017ee v\u00e1\u017e\u00ed o dv\u011b t\u0159etiny m\u00e9n\u011b.<\/p>\n
SiC m\u00e1 extr\u00e9mn\u011b vysokou pevnost v tahu p\u0159ibli\u017en\u011b 4 GPa a lze jej vyr\u00e1b\u011bt ve form\u011b kroucen\u00fdch vl\u00e1ken o pr\u016fm\u011bru od 5 do 150 mikron\u016f. Existuj\u00ed r\u016fzn\u00e9 v\u00fdrobn\u00ed p\u0159\u00edstupy, ale jedn\u00edm z nich s dlouhou histori\u00ed je proces Yajima, kter\u00fd vyu\u017e\u00edv\u00e1 keramick\u00fd kapaln\u00fd polymer rozto\u010den\u00fd p\u0159es spinneret do zelen\u00fdch (nevyp\u00e1len\u00fdch) vl\u00e1ken, kter\u00e1 pak proch\u00e1zej\u00ed n\u011bkolika kroky, v\u010detn\u011b \u010dasu str\u00e1ven\u00e9ho ve vysokoteplotn\u00edch pec\u00edch, aby se vytvo\u0159il materi\u00e1l SiC s po\u017eadovan\u00fdmi chemick\u00fdmi vlastnostmi.<\/p>\n
V\u00fdrobci karbidu k\u0159em\u00edku dod\u00e1vaj\u00ed sv\u00e1 vl\u00e1kna do r\u016fzn\u00fdch pr\u016fmyslov\u00fdch odv\u011btv\u00ed, v\u010detn\u011b metalurgie, chemie, obnoviteln\u00fdch zdroj\u016f energie a pr\u016fmyslu. Nejv\u011bt\u0161\u00ed pod\u00edl na tomto trhu bude m\u00edt energetika a energetika, proto\u017ee vl\u00e1kna SiC jsou \u0161iroce vyu\u017e\u00edv\u00e1na jako izolant v elektr\u00e1rensk\u00fdch \u017e\u00e1ruvzdorn\u00fdch materi\u00e1lech, jako je oxid hlinit\u00fd a nitrid k\u0159em\u00edku pro pou\u017eit\u00ed jako izola\u010dn\u00ed materi\u00e1l elektr\u00e1ren; rovn\u011b\u017e lopatky plynov\u00fdch turb\u00edn t\u011b\u017e\u00ed z toho, \u017ee maj\u00ed tuto pru\u017enou oxida\u010dn\u00ed odolnost, kter\u00e1 dosahuje 1650 stup\u0148\u016f C p\u0159i ni\u017e\u0161\u00ed hustot\u011b ne\u017e p\u0159\u00edrodn\u00ed miner\u00e1ly, jako je moissanit.<\/p>\n
Karbid k\u0159em\u00edku je zn\u00e1m\u00fd svou pevnost\u00ed a odolnost\u00ed v\u016f\u010di oxidaci, co\u017e z n\u011bj \u010din\u00ed ide\u00e1ln\u00ed materi\u00e1l pro prost\u0159ed\u00ed s vysok\u00fdmi teplotami, jako jsou leteck\u00e9 motory. Karbid k\u0159em\u00edku se pou\u017e\u00edv\u00e1 zejm\u00e9na jako n\u00e1hradn\u00ed materi\u00e1l v sou\u010d\u00e1stech leteck\u00fdch motor\u016f jako n\u00e1hrada superslitin na b\u00e1zi niklu; krom\u011b toho se b\u011b\u017en\u011b vyskytuje v tepeln\u00fdch \u0161t\u00edtech, dopravn\u00edkov\u00fdch p\u00e1sech a filtrech vystaven\u00fdch p\u016fsoben\u00ed vysokoteplotn\u00edch plyn\u016f nebo kapaln\u00fdch kov\u016f.<\/p>\n
Karbid k\u0159em\u00edku se od uhl\u00edkov\u00fdch vl\u00e1ken li\u0161\u00ed t\u00edm, \u017ee jeho pevnost a v\u00fdkonnost z\u016fst\u00e1vaj\u00ed zachov\u00e1ny i p\u0159i vysok\u00fdch teplot\u00e1ch d\u00edky tomu, \u017ee p\u0159i vysokoteplotn\u00edm sp\u00e9k\u00e1n\u00ed doch\u00e1z\u00ed ke sp\u00e9k\u00e1n\u00ed velk\u00fdch zrn SiC. Karbid k\u0159em\u00edku jako vl\u00e1kno je proto atraktivn\u00ed volbou materi\u00e1lu pro leteck\u00e9\/vojensk\u00e9 sou\u010d\u00e1sti zbran\u00ed\/vybaven\u00ed, stejn\u011b jako pro pr\u016fmyslov\u00e9 vysokoteplotn\u00ed sou\u010d\u00e1sti a kompozity s keramickou matric\u00ed.<\/p>\n
Sylramic a Hi-Nicalon jsou v\u00fdrobci tkan\u00fdch vl\u00e1ken z karbidu k\u0159em\u00edku odoln\u00fdch v\u016f\u010di vysok\u00fdm teplot\u00e1m. Tento tepeln\u011b podp\u016frn\u00fd materi\u00e1l dod\u00e1vaj\u00ed do odv\u011btv\u00ed metalurgie, chemie, energetiky a \u00fapravy vody, kde za\u0159\u00edzen\u00ed pot\u0159ebuj\u00ed tepelnou podporu - na trhy, kter\u00e9 budou podporovat popt\u00e1vku po t\u011bchto vysokoteplotn\u011b odoln\u00fdch vl\u00e1knech.<\/p>\n
V sou\u010dasn\u00e9 dob\u011b se vyv\u00edj\u00ed inovativn\u00ed metoda v\u00fdroby vl\u00e1ken karbidu k\u0159em\u00edku s odolnost\u00ed v\u016f\u010di vysok\u00fdm teplot\u00e1m. Ta spo\u010d\u00edv\u00e1 v pono\u0159en\u00ed prekurzorov\u00fdch vl\u00e1ken do roztoku reak\u010dn\u00edch monomer\u016f s katalyz\u00e1torem, aby do\u0161lo k m\u00edrn\u011b kontrolovateln\u00e9 chemick\u00e9 reakci p\u0159ed sp\u00e9k\u00e1n\u00edm bez konven\u010dn\u00edho vytvrzov\u00e1n\u00ed, tak\u017ee lze zachovat tlou\u0161\u0165ku zes\u00ed\u0165ovan\u00e9 vrstvy \u00fam\u011brnou pr\u016fm\u011bru vl\u00e1kna.<\/p>\n
Karbid k\u0159em\u00edku je lehk\u00fd, m\u00e1 vysok\u00fd pom\u011br pevnosti k hmotnosti a je extr\u00e9mn\u011b tvrd\u00fd a odoln\u00fd proti od\u011bru. Krom\u011b toho je d\u00edky sv\u00e9 tepeln\u00e9 a chemick\u00e9 stabilit\u011b ide\u00e1ln\u00edm materi\u00e1lem pro aplikace p\u0159i vysok\u00fdch teplot\u00e1ch nebo v drsn\u00e9m prost\u0159ed\u00ed.<\/p>\n
Po vl\u00e1knech karbidu k\u0159em\u00edku bude pravd\u011bpodobn\u011b siln\u00e1 popt\u00e1vka ze strany leteck\u00e9ho pr\u016fmyslu, zejm\u00e9na po trysk\u00e1ch pro leteck\u00fd pr\u016fmysl, pohonn\u00fdch jednotk\u00e1ch a vlo\u017ek\u00e1ch spalovac\u00edch motor\u016f, kter\u00e9 se pou\u017e\u00edvaj\u00ed jako n\u00e1hrada tradi\u010dn\u00edch kov\u016f v sou\u010d\u00e1stech letadel, jako jsou trysky. Schopnost vl\u00e1ken SiC zlep\u0161ovat \u00fa\u010dinnost motor\u016f sni\u017eov\u00e1n\u00edm emis\u00ed CO2 a NOx a sou\u010dasn\u011b zvy\u0161ovat schopnost utajen\u00ed bude pravd\u011bpodobn\u011b podporovat r\u016fst tohoto trhu. Rostouc\u00ed pot\u0159eby jadern\u00fdch elektr\u00e1ren ve vysp\u011bl\u00fdch i rozvojov\u00fdch zem\u00edch nav\u00edc zv\u00fd\u0161\u00ed vyu\u017eit\u00ed SiC vl\u00e1ken jako ned\u00edln\u00e9 sou\u010d\u00e1sti kan\u00e1lov\u00fdch box\u016f a aplikac\u00ed palivov\u00fdch pl\u00e1\u0161\u0165\u016f - co\u017e d\u00e1le zv\u00fd\u0161\u00ed vyu\u017eit\u00ed SiC vl\u00e1ken jako sou\u010d\u00e1sti kan\u00e1lov\u00fdch box\u016f nebo struktur palivov\u00fdch pl\u00e1\u0161\u0165\u016f vyu\u017e\u00edvaj\u00edc\u00edch SiC vl\u00e1kna jako kl\u00ed\u010dov\u00e9 sou\u010d\u00e1sti - co\u017e d\u00e1le podpo\u0159\u00ed r\u016fst tohoto trhu.<\/p>\n
Karbid k\u0159em\u00edku je d\u00edky sv\u00fdm vynikaj\u00edc\u00edm vlastnostem - v\u010detn\u011b odolnosti v\u016f\u010di oxidaci a vysok\u00e9 tepeln\u00e9 stabilit\u011b - ide\u00e1ln\u00edm materi\u00e1lem pro leteck\u00e9 komponenty, tak\u017ee je vhodn\u00fd pro pou\u017eit\u00ed v trysk\u00e1ch, turb\u00edn\u00e1ch a vrtul\u00edch. Jeho vynikaj\u00edc\u00ed elektrick\u00e1 vodivost mu nav\u00edc umo\u017e\u0148uje hr\u00e1t z\u00e1sadn\u00ed roli p\u0159i v\u00fdrob\u011b superslitin a oxidokeramick\u00fdch kompozit\u016f.<\/p>\n
Tato zpr\u00e1va nab\u00edz\u00ed hloubkovou anal\u00fdzu glob\u00e1ln\u00edho trhu s vl\u00e1kny z karbidu k\u0159em\u00edku, kter\u00e1 zahrnuje segmenty trhu a progn\u00f3zy. Zahrnuje anal\u00fdzy dopad\u016f PESTEL, PORTER a COVID-19 a doporu\u010den\u00ed pro investory a vedouc\u00ed pracovn\u00edky. Krom\u011b toho tato zpr\u00e1va obsahuje konkuren\u010dn\u00ed anal\u00fdzu kl\u00ed\u010dov\u00fdch hr\u00e1\u010d\u016f s ohledem na jejich produktov\u00e9 portfolio a region\u00e1ln\u00ed p\u0159\u00edtomnost.<\/p>\n
Karbid k\u0159em\u00edku je jedn\u00edm z nejodoln\u011bj\u0161\u00edch dostupn\u00fdch materi\u00e1l\u016f, kter\u00fd je schopen odol\u00e1vat vysok\u00e9mu nam\u00e1h\u00e1n\u00ed a teplot\u00e1m, ani\u017e by pod tlakem praskal, co\u017e z n\u011bj \u010din\u00ed vhodnou volbu pro jadern\u00e9 aplikace, jako jsou vyzd\u00edvky aktivn\u00ed z\u00f3ny reaktoru a st\u00ednic\u00ed materi\u00e1l pou\u017e\u00edvan\u00fd v jadern\u00fdch elektr\u00e1rn\u00e1ch. Karbid k\u0159em\u00edku nav\u00edc vydr\u017e\u00ed zna\u010dnou \u00farove\u0148 radiace, ani\u017e by byl jakkoli po\u0161kozen.<\/p>\n
Jedine\u010dn\u00e1 struktura atom\u016f uhl\u00edku a k\u0159em\u00edku v SiC mu prop\u016fj\u010duje v\u00fdjime\u010dnou chemickou odolnost. Nep\u016fsob\u00ed na n\u011bj v\u011bt\u0161ina kyselin, louh\u016f ani roztaven\u00fdch sol\u00ed a odol\u00e1v\u00e1 prim\u00e1rn\u00ed halogenov\u00e9 korozi uheln\u00e9ho popela nebo v\u011bt\u0161iny ne\u017eelezn\u00fdch kov\u016f roztaven\u00fdch p\u0159i teplot\u00e1ch a\u017e 1700 stup\u0148\u016f C - co\u017e tomuto materi\u00e1lu d\u00e1v\u00e1 vynikaj\u00edc\u00ed stabilitu na vzduchu pro pou\u017eit\u00ed v okoln\u00edch podm\u00ednk\u00e1ch.<\/p>\n
D\u00edky vysok\u00e9mu koeficientu tepeln\u00e9 rozta\u017enosti a tuhosti je k\u0159emen tak\u00e9 atraktivn\u00edm materi\u00e1lem pro zrcadla velk\u00fdch astronomick\u00fdch dalekohled\u016f, jako je Herschel\u016fv vesm\u00edrn\u00fd dalekohled. K\u0159emen lze tvarovat do kotou\u010d\u016f o pr\u016fm\u011bru a\u017e 3,5 metru.<\/p>\n
Vl\u00e1kna karbidu k\u0159em\u00edku jsou ide\u00e1ln\u00ed volbou materi\u00e1lu pro vyztu\u017eov\u00e1n\u00ed kov\u016f a keramiky v aplikac\u00edch s vysok\u00fdmi teplotami, kde se vy\u017eaduje vyztu\u017een\u00ed. Je vysoce odoln\u00e9 proti opot\u0159eben\u00ed a od\u011bru, m\u00e1 vynikaj\u00edc\u00ed pevnostn\u00ed a tuhostn\u00ed charakteristiky a v n\u011bkter\u00fdch situac\u00edch je vynikaj\u00edc\u00ed n\u00e1hradou oceli a v jin\u00fdch se mu \u010dasto d\u00e1v\u00e1 p\u0159ednost p\u0159ed skeln\u00fdmi vl\u00e1kny. V\u00fdrobky Specialty Materials z karbidu k\u0159em\u00edku s whiskery a kontinu\u00e1ln\u00edmi vl\u00e1kny vynikaj\u00ed i mezi \u017e\u00e1ruvzdorn\u00fdmi kovy z hlediska odolnosti proti oxidaci, pevnosti v tahu, odolnosti proti opot\u0159eben\u00ed i tepeln\u011b stabiln\u00edch vlastnost\u00ed ve srovn\u00e1n\u00ed s b\u011b\u017en\u00fdmi \u017e\u00e1ruvzdorn\u00fdmi kovy z hlediska odolnosti proti opot\u0159eben\u00ed vs. b\u011b\u017en\u00e9 \u017e\u00e1ruvzdorn\u00e9 kovy z hlediska odolnosti proti od\u011bru, odolnosti proti opot\u0159eben\u00ed vs. \u017e\u00e1ruvzdorn\u00e9 materi\u00e1ly pouze z hlediska t\u011bchto vlastnost\u00ed!<\/p>","protected":false},"excerpt":{"rendered":"
Silicon Carbide Fiber (SiC Fibre) is an extremely durable yet lightweight material suitable for high temperature applications, featuring remarkable properties like high temperature oxidation resistance, hardness, stiffness, thermal stability and corrosion resistance. SiC fibres excel at operating in high-radiation environments, making them popular with nuclear power plant operatorss and also being utilized in ceramic matrix […]<\/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":"","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":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","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":""}},"footnotes":""},"categories":[64],"tags":[],"class_list":["post-254","post","type-post","status-publish","format-standard","hentry","category-knowledge"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/posts\/254","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/comments?post=254"}],"version-history":[{"count":1,"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/posts\/254\/revisions"}],"predecessor-version":[{"id":255,"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/posts\/254\/revisions\/255"}],"wp:attachment":[{"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/media?parent=254"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/categories?post=254"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ceramicatijolart.com\/cs\/wp-json\/wp\/v2\/tags?post=254"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}