Vl\u00e1kno z karbidu krem\u00edka (SiC Fibre) je mimoriadne odoln\u00fd a z\u00e1rove\u0148 \u013eahk\u00fd materi\u00e1l vhodn\u00fd na vysokoteplotn\u00e9 aplik\u00e1cie, ktor\u00fd sa vyzna\u010duje pozoruhodn\u00fdmi vlastnos\u0165ami, ako je odolnos\u0165 vo\u010di oxid\u00e1cii pri vysok\u00fdch teplot\u00e1ch, tvrdos\u0165, tuhos\u0165, tepeln\u00e1 stabilita a odolnos\u0165 vo\u010di kor\u00f3zii.<\/p>\n
Vl\u00e1kna SiC s\u00fa vynikaj\u00face pri pr\u00e1ci v prostred\u00ed s vysokou radi\u00e1ciou, v\u010faka \u010domu s\u00fa ob\u013e\u00faben\u00e9 u prev\u00e1dzkovate\u013eov jadrov\u00fdch elektr\u00e1rn\u00ed a vyu\u017e\u00edvaj\u00fa sa aj v kompozitoch s keramickou matricou na zlep\u0161enie pevnosti a utajenia komponentov leteck\u00fdch motorov.<\/p>\n
Karbid krem\u00edka je ide\u00e1lny materi\u00e1l na vytv\u00e1ranie vysoko v\u00fdkonn\u00fdch kompozitov s kovovou matricou (MMC), ktor\u00fd pri pou\u017eit\u00ed ako v\u00fdstu\u017ee pon\u00faka v\u00fdrazn\u00e9 zlep\u0161enie z h\u013eadiska odolnosti proti oderu, \u0161pecifickej pevnosti, h\u00fa\u017eevnatosti, koeficientu tepelnej roz\u0165a\u017enosti a elektrickej vodivosti. Okrem toho karbid krem\u00edka poskytuje dvojn\u00e1sobn\u00fa pevnos\u0165 a 20% vy\u0161\u0161iu tepeln\u00fa odolnos\u0165 v porovnan\u00ed so superzliatinami na b\u00e1ze niklu napriek tomu, \u017ee v\u00e1\u017ei o dve tretiny menej.<\/p>\n
SiC m\u00e1 extr\u00e9mne vysok\u00fa pevnos\u0165 v \u0165ahu pribli\u017ene 4 GPa a m\u00f4\u017ee sa vyr\u00e1ba\u0165 ako skr\u00faten\u00e9 vl\u00e1kna s priemerom od 5 do 150 mikr\u00f3nov. Existuj\u00fa r\u00f4zne v\u00fdrobn\u00e9 pr\u00edstupy, ale jedn\u00fdm z nich s dlhou hist\u00f3riou je proces Yajima, pri ktorom sa vyu\u017e\u00edva keramick\u00fd tekut\u00fd polym\u00e9r, ktor\u00fd sa cez spinneret st\u00e1\u010da do zelen\u00fdch (nevyp\u00e1len\u00fdch) vl\u00e1kien, ktor\u00e9 potom prech\u00e1dzaj\u00fa nieko\u013ek\u00fdmi krokmi vr\u00e1tane \u010dasu str\u00e1ven\u00e9ho vo vysokoteplotn\u00fdch peciach, aby sa vytvoril materi\u00e1l SiC s po\u017eadovan\u00fdmi chemick\u00fdmi vlastnos\u0165ami.<\/p>\n
V\u00fdrobcovia karbidu krem\u00edka dod\u00e1vaj\u00fa svoje vl\u00e1kna do r\u00f4znych priemyseln\u00fdch odvetv\u00ed vr\u00e1tane metalurgie, ch\u00e9mie, obnovite\u013en\u00fdch zdrojov energie a priemyslu. Najv\u00e4\u010d\u0161\u00ed podiel na tomto trhu bude ma\u0165 energetika a energetika, preto\u017ee vl\u00e1kna SiC sa \u0161iroko vyu\u017e\u00edvaj\u00fa ako izolant v \u017eiaruvzdorn\u00fdch materi\u00e1loch elektr\u00e1rn\u00ed, ako je oxid hlinit\u00fd a nitrid krem\u00edka, ktor\u00e9 sa pou\u017e\u00edvaj\u00fa ako izola\u010dn\u00fd materi\u00e1l elektr\u00e1rn\u00ed; takisto lopatky plynov\u00fdch turb\u00edn profituj\u00fa z tejto pru\u017enej oxida\u010dnej odolnosti, ktor\u00e1 dosahuje 1650 stup\u0148ov C pri ni\u017e\u0161ej hustote ako pr\u00edrodn\u00e9 miner\u00e1ly, ako je moissanit.<\/p>\n
Karbid krem\u00edka je zn\u00e1my t\u00fdm, \u017ee je pevn\u00fd a odoln\u00fd vo\u010di oxid\u00e1cii, \u010do z neho rob\u00ed ide\u00e1lny materi\u00e1l do prostredia s vysokou teplotou, ako s\u00fa napr\u00edklad leteck\u00e9 motory. Karbid krem\u00edka sa vyu\u017e\u00edva najm\u00e4 ako n\u00e1hradn\u00fd materi\u00e1l v s\u00fa\u010diastkach leteck\u00fdch motorov ako n\u00e1hrada supersliatin na b\u00e1ze niklu; okrem toho sa be\u017ene vyskytuje v tepeln\u00fdch \u0161t\u00edtoch, dopravn\u00fdch p\u00e1soch a filtroch vystaven\u00fdch p\u00f4sobeniu vysokoteplotn\u00fdch plynov alebo kvapaln\u00fdch kovov.<\/p>\n
Vl\u00e1kno karbidu krem\u00edka sa od uhl\u00edkov\u00e9ho vl\u00e1kna l\u00ed\u0161i t\u00fdm, \u017ee jeho pevnos\u0165 a v\u00fdkon zost\u00e1vaj\u00fa zachovan\u00e9 aj pri vysok\u00fdch teplot\u00e1ch v\u010faka spekaniu ve\u013ek\u00fdch z\u0155n SiC pri vysokoteplotnom spekan\u00ed. Karbid krem\u00edka ako vl\u00e1kno je atrakt\u00edvnou vo\u013ebou materi\u00e1lu pre komponenty leteckej\/vojenskej v\u00fdzbroje\/vybavenia, ako aj pre priemyseln\u00e9 vysokoteplotn\u00e9 komponenty a kompozity s keramickou matricou.<\/p>\n
Sylramic a Hi-Nicalon s\u00fa v\u00fdrobcovia tkan\u00fdch vl\u00e1kien z karbidu krem\u00edka odoln\u00fdch vo\u010di vysok\u00fdm teplot\u00e1m. Dod\u00e1vaj\u00fa tento tepeln\u00fd podporn\u00fd materi\u00e1l pre odvetvia metalurgie, ch\u00e9mie, energetiky a \u00fapravy vody, kde zariadenia potrebuj\u00fa tepeln\u00fa podporu - trhy, ktor\u00e9 bud\u00fa podporova\u0165 dopyt po tak\u00fdchto vysokoteplotne odoln\u00fdch vl\u00e1knach.<\/p>\n
V s\u00fa\u010dasnosti sa vyv\u00edja inovat\u00edvna met\u00f3da v\u00fdroby karbidu krem\u00edka s odolnos\u0165ou vo\u010di vysok\u00fdm teplot\u00e1m. Ide o ponorenie prekurzorov\u00fdch vl\u00e1kien do roztoku reak\u010dn\u00fdch monom\u00e9rov s katalyz\u00e1torom, aby sa pred spekan\u00edm bez be\u017en\u00e9ho vytvrdzovania vyvolala mierne kontrolovate\u013en\u00e1 chemick\u00e1 reakcia, tak\u017ee sa m\u00f4\u017ee zachova\u0165 hr\u00fabka zosie\u0165ovanej vrstvy \u00famern\u00e1 priemeru vl\u00e1kna.<\/p>\n
Vl\u00e1kno karbidu krem\u00edka je \u013eahk\u00e9 a m\u00e1 vysok\u00fd pomer pevnosti k hmotnosti, ako aj extr\u00e9mne tvrd\u00e9 a odoln\u00e9 vo\u010di oderu. Okrem toho je v\u010faka svojej tepelnej a chemickej stabilite ide\u00e1lnym materi\u00e1lom pre aplik\u00e1cie, ktor\u00e9 zah\u0155\u0148aj\u00fa vysok\u00e9 teploty alebo drsn\u00e9 prostredie.<\/p>\n
Po karbide krem\u00edka bude pravdepodobne ve\u013ek\u00fd dopyt zo strany leteck\u00e9ho priemyslu, najm\u00e4 po leteck\u00fdch d\u00fdzach, pohonn\u00fdch jednotk\u00e1ch a vlo\u017ek\u00e1ch spa\u013eova\u010dov, ktor\u00e9 sa pou\u017e\u00edvaj\u00fa ako n\u00e1hrada tradi\u010dn\u00fdch kovov v leteck\u00fdch komponentoch, ako s\u00fa d\u00fdzy. Schopnos\u0165 vl\u00e1kien SiC zlep\u0161i\u0165 \u00fa\u010dinnos\u0165 motorov zn\u00ed\u017een\u00edm emisi\u00ed CO2 a NOx pri s\u00fa\u010dasnom zv\u00fd\u0161en\u00ed schopnosti utajenia bude pravdepodobne podporova\u0165 rast tohto trhu. Okrem toho rast\u00face potreby jadrov\u00fdch elektr\u00e1rn\u00ed v rozvinut\u00fdch a rozvojov\u00fdch krajin\u00e1ch zv\u00fd\u0161ia pou\u017e\u00edvanie vl\u00e1kien SiC ako neoddelite\u013enej s\u00fa\u010dasti kan\u00e1lov\u00fdch boxov a aplik\u00e1ci\u00ed palivov\u00fdch pl\u00e1\u0161\u0165ov - \u010do \u010falej zv\u00fd\u0161i pou\u017e\u00edvanie vl\u00e1kien SiC ako s\u00fa\u010dasti kan\u00e1lov\u00fdch boxov alebo \u0161trukt\u00far palivov\u00fdch pl\u00e1\u0161\u0165ov vyu\u017e\u00edvaj\u00facich vl\u00e1kna SiC ako k\u013e\u00fa\u010dov\u00e9 komponenty - \u010do \u010falej podpor\u00ed rast tohto trhu.<\/p>\n
Karbid krem\u00edka je ide\u00e1lnym materi\u00e1lom pre leteck\u00e9 komponenty v\u010faka svojim vynikaj\u00facim vlastnostiam vr\u00e1tane odolnosti vo\u010di oxid\u00e1cii a vysokej tepelnej stabilite, v\u010faka \u010domu je vhodn\u00fd na pou\u017eitie v d\u00fdzach, turb\u00ednach a vrtu\u013ek\u00e1ch. Okrem toho jeho vynikaj\u00faca elektrick\u00e1 vodivos\u0165 mu umo\u017e\u0148uje zohr\u00e1va\u0165 d\u00f4le\u017eit\u00fa \u00falohu aj pri v\u00fdrobe superzliatin a oxidokeramick\u00fdch kompozitov.<\/p>\n
T\u00e1to spr\u00e1va pon\u00faka h\u013abkov\u00fa anal\u00fdzu glob\u00e1lneho trhu s karbidom krem\u00edka, ktor\u00e1 zah\u0155\u0148a segmenty trhu a progn\u00f3zy. Zah\u0155\u0148a anal\u00fdzy vplyvu PESTEL, PORTER a COVID-19, ako aj odpor\u00fa\u010dania pre investorov a ved\u00facich predstavite\u013eov. Okrem toho t\u00e1to spr\u00e1va obsahuje konkuren\u010dn\u00fa anal\u00fdzu k\u013e\u00fa\u010dov\u00fdch hr\u00e1\u010dov, pokia\u013e ide o ich portf\u00f3lio v\u00fdrobkov a region\u00e1lnu pr\u00edtomnos\u0165.<\/p>\n
Karbid krem\u00edka je jedn\u00fdm z najodolnej\u0161\u00edch dostupn\u00fdch materi\u00e1lov proti kor\u00f3zii, ktor\u00fd je schopn\u00fd odol\u00e1va\u0165 vysok\u00e9mu nam\u00e1haniu a teplot\u00e1m bez toho, aby pod tlakom praskal, \u010do z neho rob\u00ed vhodn\u00fa vo\u013ebu pre jadrov\u00e9 aplik\u00e1cie, ako s\u00fa oblo\u017eenia akt\u00edvnej z\u00f3ny reaktora a tieniaci materi\u00e1l pou\u017e\u00edvan\u00fd v jadrov\u00fdch elektr\u00e1r\u0148ach. Okrem toho karbid krem\u00edka vydr\u017e\u00ed zna\u010dn\u00fa \u00farove\u0148 vystavenia \u017eiareniu bez toho, aby sa akoko\u013evek po\u0161kodil.<\/p>\n
Jedine\u010dn\u00e1 \u0161trukt\u00fara at\u00f3mov uhl\u00edka a krem\u00edka v SiC mu dod\u00e1va v\u00fdnimo\u010dn\u00fa chemick\u00fa odolnos\u0165. Nem\u00e1 na\u0148 vplyv v\u00e4\u010d\u0161ina kysel\u00edn, z\u00e1sad alebo roztaven\u00fdch sol\u00ed a odol\u00e1va prim\u00e1rnej halog\u00e9novej kor\u00f3zii uho\u013en\u00e9ho popola alebo v\u00e4\u010d\u0161iny ne\u017eelezn\u00fdch kovov roztaven\u00fdch pri teplot\u00e1ch do 1700 stup\u0148ov C - \u010do d\u00e1va tomuto materi\u00e1lu vynikaj\u00facu stabilitu na vzduchu pri pou\u017eit\u00ed v okolit\u00fdch podmienkach.<\/p>\n
Vysok\u00fd koeficient tepelnej roz\u0165a\u017enosti a tuhos\u0165 robia z kreme\u0148a atrakt\u00edvny materi\u00e1l pre zrkadl\u00e1 ve\u013ek\u00fdch astronomick\u00fdch teleskopov, ako je napr\u00edklad Herschelov vesm\u00edrny teleskop. Kreme\u0148 sa d\u00e1 formova\u0165 do diskov s d\u013a\u017ekou a\u017e 3,5 metra.<\/p>\n
Karbid krem\u00edka je ide\u00e1lnym materi\u00e1lom na vystu\u017eovanie kovov a keramiky pri vysokoteplotn\u00fdch aplik\u00e1ci\u00e1ch, kde sa vy\u017eaduje vystu\u017eenie. Je vysoko odoln\u00e9 vo\u010di opotrebovaniu a oderu, m\u00e1 vynikaj\u00face pevnostn\u00e9 a tuh\u00e9 vlastnosti a v niektor\u00fdch situ\u00e1ci\u00e1ch je vynikaj\u00facou n\u00e1hradou ocele a v in\u00fdch sa \u010dasto uprednost\u0148uje pred sklenen\u00fdmi vl\u00e1knami. V\u00fdrobky z karbidu krem\u00edka a kontinu\u00e1lnych vl\u00e1kien Specialty Materials vynikaj\u00fa dokonca aj medzi \u017eiaruvzdorn\u00fdmi kovmi z h\u013eadiska odolnosti proti oxid\u00e1cii, pevnosti v \u0165ahu, odolnosti proti opotrebovaniu, ako aj vlastnost\u00ed tepelnej stability v porovnan\u00ed s be\u017en\u00fdmi \u017eiaruvzdorn\u00fdmi kovmi z h\u013eadiska odolnosti proti opotrebovaniu oproti be\u017en\u00fdm \u017eiaruvzdorn\u00fdm kovom z h\u013eadiska odolnosti proti oderu, odolnosti proti opotrebovaniu oproti \u017eiaruvzdorn\u00fdm materi\u00e1lom len z h\u013eadiska t\u00fdchto 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\/sk\/wp-json\/wp\/v2\/posts\/254","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ceramicatijolart.com\/sk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ceramicatijolart.com\/sk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ceramicatijolart.com\/sk\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ceramicatijolart.com\/sk\/wp-json\/wp\/v2\/comments?post=254"}],"version-history":[{"count":1,"href":"https:\/\/ceramicatijolart.com\/sk\/wp-json\/wp\/v2\/posts\/254\/revisions"}],"predecessor-version":[{"id":255,"href":"https:\/\/ceramicatijolart.com\/sk\/wp-json\/wp\/v2\/posts\/254\/revisions\/255"}],"wp:attachment":[{"href":"https:\/\/ceramicatijolart.com\/sk\/wp-json\/wp\/v2\/media?parent=254"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ceramicatijolart.com\/sk\/wp-json\/wp\/v2\/categories?post=254"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ceramicatijolart.com\/sk\/wp-json\/wp\/v2\/tags?post=254"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}