Reakcijas rezult\u0101t\u0101 saist\u012btais sil\u012bcija karb\u012bds ir \u012bpa\u0161i elast\u012bgs keramikas materi\u0101ls, kas nodro\u0161ina izcilu iztur\u012bbu pret triecieniem un nodilumu, iztur\u012bbu pret termisko triecienu un \u0137\u012bmisko iedarb\u012bbu.<\/p>\n
Porainu SiC un oglek\u013ca da\u013ci\u0146u prepar\u0101ti, infiltr\u0113joties ar \u0161\u0137idru vai g\u0101zveida sil\u012bciju, k\u013c\u016bst pa\u0161savienojo\u0161i, pateicoties \u0137\u012bmiskai reakcijai starp sil\u012bciju un oglekli. Sil\u012bcijs rea\u0123\u0113 ar oglekli, veidojot papildu sil\u012bcija karb\u012bda da\u013ci\u0146as, kas v\u0113l vair\u0101k savieno s\u0101kotn\u0113j\u0101s da\u013ci\u0146as.<\/p>\n
Reakcijas rezult\u0101t\u0101 saist\u012btais sil\u012bcija karb\u012bds (RBSiC) ir \u012bpa\u0161i iztur\u012bgs keramikas materi\u0101ls, kas nodro\u0161ina izcilu \u0137\u012bmisko iztur\u012bbu, triecieniztur\u012bbu, nodilumiztur\u012bbu un termisko triecienu toleranci. RBSiC, ko ra\u017eo, infiltr\u0113jot izkaus\u0113tu sil\u012bciju porain\u0101s oglek\u013ca vai graf\u012bta sagatav\u0113s, kur tas rea\u0123\u0113 ar oglekli, veidojot SiC, un t\u0101 izcil\u0101 iztur\u012bba un augst\u0101 plastiskums padara RBSiC ide\u0101li piem\u0113rotu gandr\u012bz neto form\u0113\u0161anas procesiem, piem\u0113ram, pres\u0113\u0161anai, iesmidzin\u0101\u0161anai un ekstr\u016bzijai, \u013caujot veidot lielas deta\u013cas ar maz\u0101m pielaid\u0113m.<\/p>\n
RB SiC zem\u0101k\u0101 ciet\u012bba sal\u012bdzin\u0101jum\u0101 ar sa\u0137epin\u0101to sil\u012bcija karb\u012bdu padara to viegl\u0101k veidojamu, t\u0101p\u0113c no \u0161\u012b materi\u0101la izgatavotus sare\u017e\u0123\u012btus konstrukt\u012bvus izstr\u0101d\u0101jumus ir viegl\u0101k veidot un projekt\u0113t, lai aizsarg\u0101tu iek\u0101rtas pret nodilumu un triecieniem, t\u0101d\u0113j\u0101di palielinot iztur\u012bbu un dro\u0161\u012bbu. Turkl\u0101t t\u0101 iztur\u012bba pret termiskiem triecieniem un sp\u0113ja \u0101tri atg\u016bties p\u0113c strauj\u0101m temperat\u016bras izmai\u0146\u0101m padara to par lielisku materi\u0101lu, ko var izmantot elektrostacij\u0101s, t\u0113rauda r\u016bpn\u012bc\u0101s, kalnr\u016bpniec\u012bb\u0101 vai citur, kur iek\u0101rt\u0101m j\u0101darbojas ekstrem\u0101l\u0101s temperat\u016br\u0101s.<\/p>\n
RBSiC var lepoties ne tikai ar izcilu iztur\u012bbu, bet ar\u012b ar izcilu izm\u0113ru stabilit\u0101ti un izcilu iztur\u012bbu pret koroziju. Turkl\u0101t RBSiC var lepoties ar \u0101rk\u0101rt\u012bgi zemu termisk\u0101s izple\u0161an\u0101s koeficientu un saglab\u0101 savas meh\u0101nisk\u0101s \u012bpa\u0161\u012bbas pat augst\u0101 temperat\u016br\u0101, t\u0101p\u0113c tas ir piem\u0113rots tune\u013cu kr\u0101sn\u012bm, hidraulisk\u0101s \u0161\u0137eldo\u0161anas s\u016bk\u0146iem un citiem r\u016bpnieciskiem lietojumiem. Turkl\u0101t \u0161o vieglo materi\u0101lu var viegli form\u0113t liel\u0101kos komponentos, piem\u0113ram, meh\u0101niskiem bl\u012bv\u0113jumiem un pl\u016bsmas kontroles aizb\u012bd\u0146iem kalnr\u016bpniec\u012bb\u0101.<\/p>\n
Reakcijas rezult\u0101t\u0101 saist\u012bt\u0101 sil\u012bcija karb\u012bda keramika var iztur\u0113t temperat\u016bru l\u012bdz 1350 gr\u0101diem p\u0113c C, b\u016btiski nemainot izm\u0113rus, un tai piem\u012bt izcilas \u0137\u012bmisk\u0101s iztur\u012bbas \u012bpa\u0161\u012bbas, t\u0101p\u0113c t\u0101 ir ide\u0101li piem\u0113rota kalnr\u016bpniec\u012bbas nozarei, piem\u0113ram, cikloniem, pl\u016bsmas kontroles aizb\u012bd\u0146iem un lieliem nodiluma komponentiem.<\/p>\n
Reakt\u012bv\u0101 kaus\u0113juma infiltr\u0101cija (RMI) oglek\u013ca sagatavju infiltr\u0101cij\u0101 ietver to infiltr\u0101ciju ar \u0161\u0137idro sil\u012bciju, izmantojot reakt\u012bvo kaus\u0113juma infiltr\u0101ciju (RMI). RMI proces\u0101 \u0161\u0137idrais sil\u012bcijs ar kapil\u0101ro sp\u0113ku ies\u016bcas por\u0101s un rea\u0123\u0113 ar amorfo oglekli, veidojot b-SiC. Atliku\u0161\u0101s nerea\u0123\u0113ju\u0161\u0101s oglek\u013ca da\u013ci\u0146as un nerea\u0123\u0113ju\u0161ais ogleklis tiek att\u012br\u012bts, izmantojot daudzf\u0101\u017eu oglekli, t\u0101d\u0113j\u0101di v\u0113l vair\u0101k uzlabojot porain\u012bbu un samazinot sali\u0146u veido\u0161anos RB-SiC t\u012bkl\u0101 ar lielisk\u0101m izm\u0113ru pielaid\u0113m.<\/p>\n
Rea\u0123\u0113jot saist\u012btais sil\u012bcija karb\u012bds p\u0101rsp\u0113j sa\u0137epin\u0101to sil\u012bcija karb\u012bdu, jo tam piem\u012bt augst\u0101ka siltumvad\u012btsp\u0113ja un zem\u0101ks izple\u0161an\u0101s koeficients augst\u0101s temperat\u016br\u0101s, t\u0101p\u0113c tas ir piem\u0113rot\u0101ks lietojumiem, kuros domin\u0113 vibr\u0101cija, triecieni, nodilums vai termiskais trieciens. Tas padara reakcijas rezult\u0101t\u0101 saist\u012bto sil\u012bcija karb\u012bdu par ide\u0101lu materi\u0101lu izv\u0113li t\u0101d\u0101s vid\u0113s k\u0101 r\u016bpnieciskie ma\u0161\u012bnb\u016bves cehi.<\/p>\n
Rea\u0123\u0113jot saist\u012btais sil\u012bcija karb\u012bds nodro\u0161ina izcilu iztur\u012bbu pret augstas temperat\u016bras koroziju, k\u0101 ar\u012b pas\u012bvo un akt\u012bvo oksid\u0101ciju, padarot to piem\u0113rotu liela m\u0113roga deta\u013cu ra\u017eo\u0161anai, pateicoties t\u0101 izm\u0113ru stabilit\u0101tei, augstajai iztur\u012bbai, \u0137\u012bmiskajai iztur\u012bbai un nodilumiztur\u012bbai. To var viegli veidot da\u017e\u0101d\u0101s form\u0101s un izm\u0113ros. Tas ir \u012bpa\u0161i piem\u0113rots lielu, sare\u017e\u0123\u012btu deta\u013cu ra\u017eo\u0161anai, jo ir form\u0113jams.<\/p>\n
Rea\u0123\u0113jot savienotam sil\u012bcija karb\u012bdam (RB SiC) piem\u012bt izcila iztur\u012bba pret termiskiem triecieniem, t\u0101p\u0113c tas ir piem\u0113rots lietojumiem, kur bie\u017ei sastopamas ekstrem\u0101las temperat\u016bras. Tas ir iesp\u0113jams, pateicoties t\u0101 zemajam termisk\u0101s izple\u0161an\u0101s koeficientam, kas noz\u012bm\u0113, ka strauju temperat\u016bras izmai\u0146u ietekm\u0113 tas b\u016btiski nepapla\u0161ina vai nesa\u0161aurin\u0101s. Turkl\u0101t tam ir viena no augst\u0101kaj\u0101m ciet\u012bbas v\u0113rt\u012bb\u0101m starp in\u017eeniertehniskajiem materi\u0101liem, padarot RB SiC neticami iztur\u012bgu un elast\u012bgu.<\/p>\n
RB SiC labi iztur triecieniztur\u012bbu, t\u0101p\u0113c tas ir lielisks materi\u0101ls meh\u0101niskajiem bl\u012bv\u0113jumiem, cauru\u013cu oder\u0113jumiem, meh\u0101niskiem komponentiem, pl\u016bsmas regul\u0113\u0161anas aizb\u012bd\u0146iem un liel\u0101kiem nodiluma komponentiem kalnr\u016bpniec\u012bb\u0101 un lielas noslodzes ma\u0161\u012bn\u0101s. Ra\u017eo, iepildot izkaus\u0113tu sil\u012bciju porain\u0101s oglek\u013ca vai graf\u012bta sagatav\u0113s un rea\u0123\u0113jot ar oglekli, veidojas sil\u012bcija karb\u012bds; formas un izm\u0113rus var piel\u0101got atkar\u012bb\u0101 no konkr\u0113t\u0101m lietojuma pras\u012bb\u0101m.<\/p>\n
Vi\u0146a un citi veica RB sil\u012bcija karb\u012bda testus, lai nov\u0113rt\u0113tu t\u0101 iztur\u012bbu pret termisko triecienu, nov\u0113rt\u0113jot t\u0101 iztur\u012bbu \u010detru punktu lieces proces\u0101 p\u0113c pak\u013cau\u0161anas temperat\u016bras paaugstin\u0101jumam no istabas temperat\u016bras l\u012bdz 1000 gr\u0101diem p\u0113c C. Vi\u0146u ieg\u016btie rezult\u0101ti par\u0101d\u012bja, ka termisk\u0101 spriedze izraisa plaisas ar \u0161\u0137iedr\u0101m savienot\u0101 keramik\u0101, plais\u0101m izplatoties starp \u0161\u0137iedru elementiem un caur to saskarn\u0113m; materi\u0101la uzved\u012bbu noteica reakcijas sa\u0137epin\u0101\u0161anas laik\u0101 izmantotie oglek\u013ca avoti, t\u0101di k\u0101 ogles sodr\u0113ji vai rupja mikrosf\u0113riska graf\u012bta ogle.<\/p>\n
Rea\u0123\u0113jot saist\u012btais sil\u012bcija karb\u012bds (RB SiC) ir augsta bl\u012bvuma keramikas materi\u0101ls ar lielisk\u0101m \u012bpa\u0161\u012bb\u0101m pret \u0137\u012bmiskiem un korozijas boj\u0101jumiem, tostarp sk\u0101b\u0113m, s\u0101rmiem un \u0161\u0137\u012bdin\u0101t\u0101jiem, k\u0101 ar\u012b iztur\u012bbu pret korozijas boj\u0101jumiem. T\u0101 zem\u0101 izple\u0161an\u0101s koeficienta d\u0113\u013c to var piel\u0101got da\u017e\u0101d\u0101m form\u0101m un izm\u0113riem, tostarp meh\u0101niskiem bl\u012bv\u0113jumiem, pl\u016bsmas regul\u0113\u0161anas aizb\u012bd\u0146iem, s\u016bk\u0146iem un lieliem nodiluma komponentiem, kas bie\u017ei sastopami kalnr\u016bpniec\u012bbas ciklonu lietojumos.<\/p>\n
Sil\u012bcija karb\u012bds, kas ieg\u016bts, infiltr\u0113jot porainas oglek\u013ca vai graf\u012bta sagataves ar \u0161\u0137idru vai g\u0101zveida sil\u012bciju, ir iztur\u012bg\u0101ks un tam ir augst\u0101ka termisk\u0101 stabilit\u0101te nek\u0101 sa\u0137epin\u0101taj\u0101m \u0161\u0137irn\u0113m. T\u0101p\u0113c \u0161\u012b forma ir ide\u0101li piem\u0113rota lietojumiem, kur nepiecie\u0161ams zem\u0101ks ciet\u012bbas l\u012bmenis, bet augst\u0101ka temperat\u016bras stabilit\u0101te.<\/p>\n
RB SiC keramikas korozijas boj\u0101jumi ir minim\u0101li, ar izcilu iztur\u012bbu pret oksid\u0101ciju, s\u0101lssk\u0101bi, s\u0113rsk\u0101bi, s\u0113rsk\u0101bi, bromsk\u0101bi un sp\u0113c\u012bgiem s\u0101rmiem. Turkl\u0101t t\u0101s zem\u0101 caurlaid\u012bba pal\u012bdz sasniegt izcilu \u0137\u012bmisko iztur\u012bbu.<\/p>\n
Sinter\u0113tais sil\u012bcija karb\u012bds parasti ir d\u0101rg\u0101ks nek\u0101 RB SiC; tom\u0113r tas var b\u016bt noder\u012bgs lietojumos, kur ir pie\u0146emams zems ciet\u012bbas l\u012bmenis, bet ir nepiecie\u0161ama uzlabota termisk\u0101 stabilit\u0101te. RB SiC pied\u0101v\u0101 liel\u0101ku ra\u017eo\u0161anas elast\u012bbu, k\u0101 ar\u012b ir rentabl\u0101ks nek\u0101 sa\u0137epin\u0101tais sil\u012bcija karb\u012bds.<\/p>","protected":false},"excerpt":{"rendered":"
Reaction-bonded silicon carbide is an ultra-resilient ceramic material that offers exceptional strength against impact and wear, thermal shock resistance, and chemical attack. Formulations of porous SiC and carbon particles, when infiltrated with liquid or gaseous silicon, become self-bonding due to chemical reaction between silicon and carbon. Silicon reacts with carbon to form additional silicon carbide […]<\/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-331","post","type-post","status-publish","format-standard","hentry","category-knowledge"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/ceramicatijolart.com\/lv\/wp-json\/wp\/v2\/posts\/331","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ceramicatijolart.com\/lv\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ceramicatijolart.com\/lv\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ceramicatijolart.com\/lv\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ceramicatijolart.com\/lv\/wp-json\/wp\/v2\/comments?post=331"}],"version-history":[{"count":1,"href":"https:\/\/ceramicatijolart.com\/lv\/wp-json\/wp\/v2\/posts\/331\/revisions"}],"predecessor-version":[{"id":332,"href":"https:\/\/ceramicatijolart.com\/lv\/wp-json\/wp\/v2\/posts\/331\/revisions\/332"}],"wp:attachment":[{"href":"https:\/\/ceramicatijolart.com\/lv\/wp-json\/wp\/v2\/media?parent=331"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ceramicatijolart.com\/lv\/wp-json\/wp\/v2\/categories?post=331"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ceramicatijolart.com\/lv\/wp-json\/wp\/v2\/tags?post=331"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}