Silicio karbido pluo\u0161tas yra lanksti, tvirta, atspari oksidacijai ir ma\u017eo tankio keramin\u0117 med\u017eiaga, naudojama auk\u0161tatemperat\u016br\u0117je aplinkoje kompozitin\u0117ms med\u017eiagoms sutvirtinti.<\/p>\n
D\u0117l savo i\u0161skirtini\u0173 savybi\u0173 ekstremaliomis temperat\u016bros s\u0105lygomis anglies nanovamzdeliai sulauk\u0117 didelio d\u0117mesio aviacijos ir kosmoso bei karin\u0117s ginkluot\u0117s ir \u012frangos pramon\u0117je. Be to, \u0161ios med\u017eiagos taip pat gali b\u016bti naudojamos keramikos matricos kompozitams stiprinti.<\/p>\n
Silicio karbido pluo\u0161tai yra patraukli med\u017eiaga auk\u0161tatemperat\u016briams konstrukciniams darbams d\u0117l didelio savitojo stiprio, ma\u017eo \u0161iluminio pl\u0117timosi ir puikaus atsparumo dilimui. Silicio karbidas gali b\u016bti naudojamas metalo matricos kompozitams, pasi\u017eymintiems puikiu \u0161iluminiu stabilumu ir elektriniu laidumu, sustiprinti.<\/p>\n
Silicio karbido pluo\u0161tai taip pat pasi\u017eymi puikiu atsparumu oksidacijai ir lengvu paruo\u0161imu, tod\u0117l jie yra puiki alternatyva boro pluo\u0161tui daugelyje sri\u010di\u0173. Be to, silicio karbido pluo\u0161tai yra idealus kandidatas didelio grei\u010dio mechaniniams taikymams, pavyzd\u017eiui, aviacijos ir kosmoso ar bepilo\u010di\u0173 orlaivi\u0173 (UAV) konstrukcijoms.<\/p>\n
\u0160iame tyrime suk\u016br\u0117me nauj\u0105 neoksidacini\u0173 silicio karbido pluo\u0161t\u0173, tinkam\u0173 naudoti auk\u0161toje temperat\u016broje, k\u016brimo proces\u0105, naudodami polikarbosilano pirmtako piroliz\u0119. Pagaminti pluo\u0161tai buvo \u012fvertinti naudojant skenuojan\u010di\u0105j\u0105 elektronin\u0119 mikroskopij\u0105 ir rentgeno spinduli\u0173 difrakcin\u0119 analiz\u0119; netaisyklingos formos SiC milteli\u0173 dalel\u0117s buvo pradin\u0117 med\u017eiaga, i\u0161 kurios, naudojant ri\u0161iklio purk\u0161tuvo technologij\u0105, buvo gaminami ri\u0161iklio purk\u0161tuvu austi silicio karbido pluo\u0161tu armuoti keramin\u0117s matricos kompozitai; j\u0173 tankinimo elgsena ir mikrostrukt\u016bra buvo \u012fvertinta per \u0161e\u0161is polimero infiltracijos ir piroliz\u0117s ciklus.<\/p>\n
Silicio karbido pluo\u0161tus d\u0117l j\u0173 i\u0161skirtinio \u0161iluminio atsparumo ir kit\u0173 savybi\u0173 jau seniai naudoja aviacijos ir kosmoso pramon\u0117s specialistai, tod\u0117l jie yra populiar\u016bs komponentai, naudojami orlaivi\u0173 varikliuose ir \u0161ilumos valdymo sistemose. Silicio karbidas sustiprina \u0161iuose varikliuose ar sistemose naudojamus keramin\u0117s matricos kompozitus (CMC) - j\u0173 tankis tre\u010ddaliu ma\u017eesnis nei nikelio ir metalo lydini\u0173 komponent\u0173, o bendras orlaivio svoris suma\u017e\u0117ja d\u0117l ma\u017eesnio bendro tankio.<\/p>\n
MEMS (mikro)mechaniniuose prietaisuose, \u012fskaitant sl\u0117gio jutiklius, akselerometrus, termoelementus ir pjezoelektrinius generatorius, mechanin\u0117s pavaros arba jutikliai sujungiami su integruotomis elektronin\u0117mis grandin\u0117mis, kad b\u016bt\u0173 u\u017etikrintas didesnis funkcionalumas. Silicio karbido pluo\u0161tai taip pat gali b\u016bti supinti \u012f mikrostrukt\u016brinius MEMS, u\u017etikrinan\u010dius puik\u0173 mechanin\u012f ir chemin\u012f veikim\u0105 net esant ekstremalioms temperat\u016broms.<\/p>\n
Prognozuojama, kad \u0160iaur\u0117s Amerikos rinkos pirmaus pasaulin\u0117je silicio karbido pluo\u0161to rinkoje pagal augim\u0105, nes ten did\u0117ja aviacijos ir karin\u0117s \u012frangos gamybos apimtys. Prognozuojama, kad did\u0117jan\u010dios i\u0161laidos gynybai ir NASA finansavimas taip pat padidins silicio karbido pluo\u0161t\u0173 paklaus\u0105; be to, juos naudojant elektromobili\u0173 maitinimo \u012frenginiuose galima padidinti nuva\u017eiuojam\u0105 atstum\u0105 ir kartu suma\u017einti baterijos energijos nuostolius bei komponent\u0173 dyd\u012f, taip padidinant sistemos efektyvum\u0105.<\/p>\n
Silicio karbido pluo\u0161tai puikiai tinka daug energijos reikalaujan\u010dioms programoms, pasi\u017eymi dideliu laidumu ir stiprumu bei ma\u017eu \u0161iluminiu pl\u0117timusi. D\u0117l \u0161io derinio jie yra ideali med\u017eiaga auk\u0161tos \u012ftampos elektros komponentams, taip pat elektros energijos perdavimo ir paskirstymo \u012frenginiams.<\/p>\n
D\u0117l j\u0173 atsparumo oksidacijai jie idealiai tinka keramini\u0173 matricos kompozit\u0173 gamybai, kurie pla\u010diai naudojami kuriant branduolini\u0173 reaktori\u0173 kuro apvalkalus, atsparius ekstremalioms temperat\u016broms, tod\u0117l tik\u0117tina, kad \u0161i\u0173 pluo\u0161t\u0173 paklausa ilgainiui gerokai i\u0161augs.<\/p>\n
Tikimasi, kad silicio karbido pluo\u0161to rinka augs d\u0117l did\u0117jan\u010di\u0173 i\u0161laid\u0173 gynybai ir augan\u010di\u0173 komercini\u0173 orlaivi\u0173 siunt\u0173 Jungtin\u0117se Amerikos Valstijose. Be to, padid\u0117j\u0119s NASA finansavimas ir i\u0161laidos gynybai gali padidinti titano, aliuminio ir keramini\u0173 kompozitini\u0173 gamini\u0173 paklaus\u0105 Amerikoje d\u0117l j\u0173 geb\u0117jimo veikti auk\u0161tos temperat\u016bros aplinkoje.<\/p>\n
Silicio karbido pluo\u0161tas pla\u010diai naudojamas keramini\u0173 matric\u0173 kompozitams gaminti ir kaip alternatyva nikelio pagrindo superlydiniams gaminant aviacijos ir kosmoso komponentus. Be to, silicio karbido pluo\u0161tas d\u0117l savo radiacijai atspari\u0173 savybi\u0173 tampa vis populiaresniu pasirinkimu energijos gamybos pramon\u0117je keramin\u0117ms dangoms ir branduolini\u0173 reaktori\u0173 \u0161erdies konstrukcijoms gaminti.<\/p>\n
D\u0117l auk\u0161tos temperat\u016bros stabilumo ir cheminio inerti\u0161kumo aliuminio oksidas yra puiki med\u017eiaga auk\u0161tatemperat\u016briams kompozitams armuoti, nes jis i\u0161laiko savo stiprum\u0105 net ir auk\u0161tesn\u0117je temperat\u016broje. Be to, jo tempiamasis stipris u\u017etikrina mechanines savybes nedidinant svorio - tai ne\u012fkainojama savyb\u0117 tokiose jautriose svoriui srityse kaip automobili\u0173 pramon\u0117 ir aviacija.<\/p>\n
Austos silicio karbido skaidulos pla\u010diai naudojamos metalo gamybos pramon\u0117je kaip izoliacin\u0117 med\u017eiaga ir ugniai atspari\u0173 med\u017eiag\u0173, toki\u0173 kaip silicio dioksidas, aliuminio oksidas ir aliuminio nitridas, sutvirtinimas. Be to, d\u0117l ma\u017eo deguonies kiekio jie tinka naudoti duj\u0173 turbinose, nes gali atlaikyti auk\u0161tesn\u0119 temperat\u016br\u0105.<\/p>","protected":false},"excerpt":{"rendered":"
Silicon carbide fiber is a flexible, strong, oxidation resistant and low density ceramic material used in high temperature environments to reinforce composite materials. Due to its exceptional performance under extreme temperature conditions, carbon nanotubes have garnered wide attention in both aerospace and military weapons and equipment industries. Furthermore, these materials can also be used to […]<\/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-176","post","type-post","status-publish","format-standard","hentry","category-knowledge"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/ceramicatijolart.com\/lt\/wp-json\/wp\/v2\/posts\/176","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ceramicatijolart.com\/lt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ceramicatijolart.com\/lt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ceramicatijolart.com\/lt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ceramicatijolart.com\/lt\/wp-json\/wp\/v2\/comments?post=176"}],"version-history":[{"count":1,"href":"https:\/\/ceramicatijolart.com\/lt\/wp-json\/wp\/v2\/posts\/176\/revisions"}],"predecessor-version":[{"id":177,"href":"https:\/\/ceramicatijolart.com\/lt\/wp-json\/wp\/v2\/posts\/176\/revisions\/177"}],"wp:attachment":[{"href":"https:\/\/ceramicatijolart.com\/lt\/wp-json\/wp\/v2\/media?parent=176"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ceramicatijolart.com\/lt\/wp-json\/wp\/v2\/categories?post=176"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ceramicatijolart.com\/lt\/wp-json\/wp\/v2\/tags?post=176"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}