{"id":361,"date":"2024-10-31T13:45:10","date_gmt":"2024-10-31T05:45:10","guid":{"rendered":"https:\/\/siliconcarbideceramic.net\/?p=361"},"modified":"2024-12-21T21:24:57","modified_gmt":"2024-12-21T13:24:57","slug":"reakciniu-budu-sujungtas-sic-optimalus-nasumas-ekstremaliomis-salygomis","status":"publish","type":"post","link":"https:\/\/siliconcarbideceramic.net\/lt\/reaction-bonded-sic-optimal-performance-for-extreme-conditions\/","title":{"rendered":"Reakcijos b\u016bdu suri\u0161tas SiC: optimalios eksploatacin\u0117s savyb\u0117s ekstremaliomis s\u0105lygomis"},"content":{"rendered":"

Reakcinio sujungimo SiC \u2013 optimal\u016bs eksploataciniai parametrai ekstremaliomis s\u0105lygomis<\/h1>\n

Reakcinio ri\u0161imo SiC (RBSC) \u2013 tai tanki keramin\u0117 med\u017eiaga, sudaryta i\u0161 silicio karbido ir anglies daleli\u0173. Degimo metu jos matmenys pasikei\u010dia minimaliai, tod\u0117l galima gaminti beveik galutin\u0117s formos gaminius be papildom\u0173 i\u0161laid\u0173, susijusi\u0173 su apdirbimu po degimo.<\/p>\n

Nustatyta, kad RBSC por\u0173 strukt\u016bros priklauso nuo keli\u0173 pagrindini\u0173 kintam\u0173j\u0173, susijusi\u0173 su grafitizacijos laipsniu, anglies \u0161altini\u0173 dyd\u017eiu ir morfologija; j\u0173 \u012ftaka anglies reaktyvumui silicio lydalo at\u017evilgiu buvo mil\u017eini\u0161ka.<\/p>\n

Didelis stiprumas<\/h2>\n

Silicio karbidas yra itin stipri ir standi med\u017eiaga, galinti atlaikyti didelius apkrovimus neprarandant savo strukt\u016brinio vientisumo. D\u0117l ma\u017eo tankio ir didelio savitojo standumo silicio karbidas yra pageidaujama med\u017eiaga tokiose srityse kaip kosminiai teleskopai, kur b\u016btina atsi\u017evelgti \u012f svorio apribojimus.<\/p>\n

D\u0117l savo cheminio inerti\u0161kumo RB SiC puikiai tinka naudoti ten, kur jis susidurs su agresyviomis chemin\u0117mis med\u017eiagomis. Be to, jo atsparumas temperat\u016briniams \u0161okams leid\u017eia jam atlaikyti staigius aplinkos s\u0105lyg\u0173 poky\u010dius.<\/p>\n

Siekiant padidinti RB SiC lenkimo stiprum\u0105 ir elastingumo modul\u012f, tyr\u0117me, kaip skirtingas anglies kiekis veikia jo mikrostrukt\u016br\u0105. Naudodami PF ir FA pirmtak\u0173 kompozitin\u012f tirpal\u0105, sugeb\u0117jome kontroliuoti tiek anglies kiek\u012f, tiek jos kristalinum\u0105 m\u016bs\u0173 akytame ruo\u0161inyje, taip pagamindami RB SiC, pasi\u017eymint\u012f didesniu lenkimo stiprumu ir elastingumo moduliu.<\/p>\n

Didelis \u0161ilumos laidumas<\/h2>\n

SiC pasi\u017eymi labai auk\u0161tu \u0161ilumos laidumu \u2013 jo laidumas siekia ma\u017edaug 300 W\/mK, tod\u0117l RBSC yra puikus pasirinkimas tais atvejais, kai reikalingos auk\u0161tos temperat\u016bros eksploatacin\u0117s savyb\u0117s.<\/p>\n

RBSC pasi\u017eymi puikiu atsparumu abrazyviniam ir eroziniam nusid\u0117v\u0117jimui, tod\u0117l puikiai tinka sud\u0117tingoms pramonin\u0117ms aplinkoms. Be to, d\u0117l ma\u017eo \u0161iluminio pl\u0117timosi koeficiento med\u017eiaga gali atlaikyti staigius temperat\u016bros svyravimus, neprarandant strukt\u016brinio vientisumo.<\/p>\n

RBSC ruo\u0161ini\u0173 gamybai naudojam\u0173 \u017ealiav\u0173 daleli\u0173 dyd\u017eio pasiskirstymas turi did\u017eiul\u012f poveik\u012f j\u0173 mikrostrukt\u016brai ir fizikin\u0117ms savyb\u0117ms, pavyzd\u017eiui, lenkimo stiprumui ir elastingumo modulisui. Padid\u0117jus anglies juod\u0173j\u0173 daleli\u0173 kiekiui, pager\u0117ja mikrostrukt\u016bra, o gatav\u0173 gamini\u0173, pasi\u017eymin\u010di\u0173 geresne mikrostrukt\u016bra, lenkimo stiprumas ir elastingumo modulis padid\u0117ja.<\/p>\n

I\u0161sipl\u0117timas esant \u017eemai temperat\u016brai<\/h2>\n

Reakciniu b\u016bdu sujungtas SiC tinka naudoti ten, kur reikalingas atsparumas auk\u0161tai temperat\u016brai ir puikios \u0161iluminio pl\u0117timosi savyb\u0117s, kurias u\u017etikrina anglies juod\u0173j\u0173 ir mikrosferinio grafito naudojimas jo gamybos procese. Reakciniu b\u016bdu sujungto SiC sud\u0117tis, strukt\u016bra ir savyb\u0117s skiriasi priklausomai nuo anglies kiekio, proporcijos, morfologijos ir naudojam\u0173 anglies \u0161altini\u0173 formos.<\/p>\n

Reakcinis klijavimas yra veiksmingas b\u016bdas gaminti keramines med\u017eiagas, pavyzd\u017eiui, ugniai atsparias med\u017eiagas, akytus filtr\u0173 korpusus ir nusid\u0117v\u0117jimui atsparias detales, tokias kaip mechaniniai sandarikliai ir guoliai.<\/p>\n

RB SiC yra ypa\u010d tvirta ir patikima med\u017eiaga, puikiai pasiteisinanti \u012fvairiose aplinkose. D\u0117l ma\u017eo \u0161iluminio pl\u0117timosi koeficiento \u0161i med\u017eiaga puikiai tinka taikymams, kuriems reikalingas tikslus matmen\u0173 stabilumas, pavyzd\u017eiui, siurbliams, guoliams ir srauto reguliavimo droseliams. Be to, \u0161i universali med\u017eiaga taip pat gali b\u016bti naudojama gaminant puslaidininki\u0173 gamybos \u012frangos komponentus, pavyzd\u017eiui, plok\u0161teli\u0173 tvarkymo komponentus.<\/p>\n

Ma\u017ea trintis<\/h2>\n

Reakcinio ri\u0161imo silicio karbidas (RBSC) yra universali keramin\u0117 med\u017eiaga, i\u0161 kurios galima formuoti sud\u0117tingas formas, skirtas profesionaliam ir pramoniniam naudojimui. RBSC pasi\u017eymi puikiu atsparumu dilimui ir ma\u017eu pl\u0117timosi koeficientu, atsparumu korozijai, taip pat i\u0161skirtin\u0117mis elektrin\u0117mis savyb\u0117mis.<\/p>\n

RBSC gaminamas \u012f akytas silicio karbido ruo\u0161inius \u012fsunkant skyst\u0105 silic\u012f. Taip susidaro keramika, turinti nepralaid\u017ei\u0105 strukt\u016br\u0105, atspari vidutini\u0161kai \u0117sdinan\u010dioms ir r\u016bg\u0161tin\u0117ms skys\u010diams, taip pat lengviesiems angliavandeniliams. Be to, jos nepralaidi sud\u0117tis ir pavir\u0161iaus tekst\u016bra suma\u017eina trint\u012f, taip prailgindamos komponento tarnavimo laik\u0105, o d\u0117l savo lengvumo ir standumo ji tinka naudoti kosminiuose teleskopuose, kur taikomi naudingosios apkrovos svorio apribojimai; jos matmen\u0173 at\u017evilgiu labai stabilus pavir\u0161ius suteikia dar daugiau privalum\u0173.<\/p>\n

Didelis atsparumas chemin\u0117ms med\u017eiagoms<\/h2>\n

Reakcinio sujungimo b\u016bdu pagamintas SiC pasi\u017eymi dideliu atsparumu chemin\u0117ms korozijoms, tod\u0117l puikiai tinka aplinkoms, kuriose naudojamos korozines med\u017eiagos. Be to, d\u0117l ma\u017eo \u0161iluminio pl\u0117timosi koeficiento ir didelio stiprumo jis gali atlaikyti ekstremalias temperat\u016bras.<\/p>\n

Reakcinio sujungimo gamybos procese i\u0161lydytas silicis \u012fpur\u0161kiamas \u012f akyt\u0105 anglies med\u017eiag\u0105, suformuot\u0105 pagal norimos detal\u0117s form\u0105, kur jis reaguoja su anglies molekul\u0117mis ir sudaro silicio karbid\u0105.<\/p>\n

Tyrimais nustatyta, kad RBSC keramikos lenkimo stipris, elastingumo modulis ir poringumas priklauso nuo anglies \u0161altinio med\u017eiagos kiekio ir proporcij\u0173. Pasiekus tinkam\u0105 anglies \u0161altinio ir morfologijos gradacij\u0105, \u017eymiai pager\u0117ja eksploatacin\u0117s savyb\u0117s; tai u\u017etikrina tolyg\u0173 laisv\u0173j\u0173 SiC daleli\u0173 pasiskirstym\u0105 tankiai supakuotoje mikrostrukt\u016broje ir puikias galutini\u0173 produkt\u0173 savybes.<\/p>\n

\"Reakcinio<\/p>","protected":false},"excerpt":{"rendered":"

Reaction Bonded SiC – Optimal Performance for Extreme Conditions Reaction Bonded SiC (RBSC) is a dense ceramic material composed of […]<\/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":""}},"footnotes":""},"categories":[5],"tags":[],"class_list":["post-361","post","type-post","status-publish","format-standard","hentry","category-product-related"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/siliconcarbideceramic.net\/lt\/wp-json\/wp\/v2\/posts\/361","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/siliconcarbideceramic.net\/lt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/siliconcarbideceramic.net\/lt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/siliconcarbideceramic.net\/lt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/siliconcarbideceramic.net\/lt\/wp-json\/wp\/v2\/comments?post=361"}],"version-history":[{"count":3,"href":"https:\/\/siliconcarbideceramic.net\/lt\/wp-json\/wp\/v2\/posts\/361\/revisions"}],"predecessor-version":[{"id":383,"href":"https:\/\/siliconcarbideceramic.net\/lt\/wp-json\/wp\/v2\/posts\/361\/revisions\/383"}],"wp:attachment":[{"href":"https:\/\/siliconcarbideceramic.net\/lt\/wp-json\/wp\/v2\/media?parent=361"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/siliconcarbideceramic.net\/lt\/wp-json\/wp\/v2\/categories?post=361"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/siliconcarbideceramic.net\/lt\/wp-json\/wp\/v2\/tags?post=361"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}