Sil\u012bcija karb\u012bda pulveris tiek pla\u0161i izmantots k\u0101 abraz\u012bvs materi\u0101ls met\u0101la un keramikas deta\u013cu tr\u012b\u0161an\u0101, sl\u012bp\u0113\u0161an\u0101 un pul\u0113\u0161an\u0101. Turkl\u0101t \u0161o pulveri var izmantot vair\u0101k\u0101s r\u016bpniec\u012bbas nozar\u0113s, pateicoties t\u0101 stipr\u012bbas, siltumvad\u012btsp\u0113jas un iztur\u012bbas pret koroziju \u012bpa\u0161\u012bb\u0101m.<\/p>\n
Sil\u012bcija karb\u012bdu var izveidot divos procesos - reakcijas saist\u012b\u0161anas un sa\u0137epin\u0101\u0161anas proces\u0101. Katra metode b\u016btiski ietekm\u0113 materi\u0101la gal\u012bgo mikrostrukt\u016bru.<\/p>\n
Sil\u012bcija karb\u012bds (SiC) ir viena no ciet\u0101kaj\u0101m dab\u0101 sastopamaj\u0101m viel\u0101m, kam seko tikai dimants un bora karb\u012bds. Pateicoties savai ciet\u012bbai, SiC nodro\u0161ina izcilu iztur\u012bbu pret nodilumu un nodilumu, k\u0101 ar\u012b koroziju, t\u0101p\u0113c tas ir ide\u0101li piem\u0113rots r\u016bpnieciskiem lietojumiem, kas saist\u012bti ar augsttemperat\u016bras\/sprieguma vidi.<\/p>\n
SiC ir nonooks\u012bda keramikas materi\u0101ls ar izcil\u0101m meh\u0101nisk\u0101m \u012bpa\u0161\u012bb\u0101m, tostarp \u013coti augstu lieces iztur\u012bbu istabas temperat\u016br\u0101, izcilu iztur\u012bbu pret oksid\u0113\u0161anos, zemu berzes koeficientu un iztur\u012bbu pret sk\u0101bes\/ s\u0101rmu \u0161\u0137\u012bdin\u0101t\u0101jiem - \u012bpa\u0161\u012bbas, kas padara to piem\u0113rotu t\u0101diem lietojumiem k\u0101 kosmisk\u0101 avi\u0101cija, ma\u0161\u012bnb\u016bve un elektronika.<\/p>\n
Premasol pied\u0101v\u0101 SiC da\u017e\u0101dos mikronu izm\u0113ros gan ar e\u013c\u013cas, gan \u016bdens b\u0101zes nes\u0113jiem, lai atbilstu j\u016bsu vajadz\u012bb\u0101m. SiC ieg\u016bst, sil\u012bcija smiltis kars\u0113jot kop\u0101 ar oglekli \u013coti augst\u0101 temperat\u016br\u0101, lai rad\u012btu sil\u012bcija karb\u012bda krist\u0101lus; za\u013c\u0101 kr\u0101sa parasti ir saist\u012bta ar augst\u0101ku t\u012br\u012bbas pak\u0101pi, bet meln\u0101 - ar piemais\u012bjumu l\u012bmeni, t\u0101p\u0113c \u0161is materi\u0101ls ir piem\u0113rots daudziem sare\u017e\u0123\u012btiem lietojumiem.<\/p>\n
Sil\u012bcija karb\u012bds ir \u0101rk\u0101rt\u012bgi ciets un iztur\u012bgs materi\u0101ls, kas sp\u0113j iztur\u0113t lielas slodzes un triecienus, vienlaikus saglab\u0101jot augstu nodilumiztur\u012bbu un iztur\u012bbu pret eroziju - ide\u0101las \u012bpa\u0161\u012bbas, ko var izmantot t\u0101d\u0101s skarb\u0101s vid\u0113s k\u0101 naftas \u0137\u012bmijas r\u016bpniec\u012bba vai d\u016bmg\u0101zu desulfuriz\u0101cijas iek\u0101rtas.<\/p>\n
No \u0137\u012bmisk\u0101 viedok\u013ca sil\u012bcija karb\u012bds ir inerts un iztur\u012bgs pret praktiski vis\u0101m organiskaj\u0101m un neorganiskaj\u0101m sk\u0101b\u0113m, piem\u0113ram, fosforsk\u0101bi, s\u0113rsk\u0101bi un s\u0101lssk\u0101bi, k\u0101 ar\u012b iztur\u012bgs pret koroziju oksid\u0101cijas apst\u0101k\u013cos. Turkl\u0101t t\u0101 lielisk\u0101 iztur\u012bba pret koroziju padara to piem\u0113rotu sast\u0101vda\u013c\u0101m, kas pak\u013cautas augst\u0101m temperat\u016br\u0101m vai strauj\u0101m temperat\u016bras izmai\u0146\u0101m, piem\u0113ram, deg\u013cu sprausl\u0101m\/str\u016bklu caurul\u0113m\/meh\u0101nisko bl\u012bv\u0113jumu da\u013c\u0101m.<\/p>\n
Sil\u012bcija karb\u012bds (SiC) ir impregn\u0113ta bezoks\u012bda keramika ar augstu ciet\u012bbu un iztur\u012bbu. Turkl\u0101t t\u0101 \u0137\u012bmisk\u0101 iztur\u012bba padara to \u013coti \u0137\u012bmiski iztur\u012bgu, k\u0101 ar\u012b pusvado\u0161u - \u0161\u012bs \u012bpa\u0161\u012bbas ir padar\u012bju\u0161as SiC par nenov\u0113rt\u0113jamu materi\u0101lu, ko pla\u0161i izmanto meh\u0101niskiem bl\u012bv\u0113jumiem, s\u016bk\u0146u deta\u013c\u0101m un pusvad\u012bt\u0101ju apstr\u0101des iek\u0101rt\u0101m.<\/p>\n
Sinter\u0113tajai SiC keramikai ir zema termisk\u0101 izple\u0161an\u0101s un izcilas meh\u0101nisk\u0101s \u012bpa\u0161\u012bbas, kas padara to par ide\u0101lu materi\u0101lu augstas temperat\u016bras kr\u0101sn\u012bm. T\u0101s var iztur\u0113t temperat\u016bru l\u012bdz pat 1600oC, vienlaikus saglab\u0101jot elast\u012bbu pret termisko triecienu.<\/p>\n
Rea\u0123\u0113jot saist\u012btais sil\u012bcija karb\u012bds (RB SiC, bie\u017ei d\u0113v\u0113ts par Calsic RB) ir ekonomiska alternat\u012bva sa\u0137epin\u0101tajam SiC, ja korozijas vai nodilumiztur\u012bba nav b\u016btisks aspekts. RB SiC, ko ra\u017eo, pirms reakcijas sa\u0137epin\u0101\u0161anas iepriek\u0161 sajaucot sil\u012bcija dioks\u012bdu ar oglekli, nodro\u0161ina daudzas t\u0101das pa\u0161as priek\u0161roc\u012bbas par daudz zem\u0101k\u0101m izmaks\u0101m nek\u0101 sa\u0137epin\u0101ts keramikas materi\u0101ls.<\/p>\n
Sil\u012bcija karb\u012bda pulverim piem\u012bt izcila \u0137\u012bmisk\u0101 stabilit\u0101te, iztur\u012bba un termisk\u0101s izple\u0161an\u0101s iztur\u012bba \u013coti augst\u0101 temperat\u016br\u0101, t\u0101p\u0113c tas ir piem\u0113rots r\u016bpniecisk\u0101s keramikas lietojumiem, piem\u0113ram, kr\u0101sns plauktiem un oder\u0113jumam. Turkl\u0101t sil\u012bcija karb\u012bdu var izmantot ar\u012b k\u0101 abraz\u012bvu.<\/p>\n
Sil\u012bcija karb\u012bdu k\u0101 ciet\u0101kos zin\u0101mos materi\u0101lus var sal\u012bdzin\u0101t tikai ar dimantu un kubisko bora nitr\u012bdu. Tas ir \u0101rk\u0101rt\u012bgi ciets materi\u0101ls, ko izmanto, s\u0101kot no abraz\u012bviem un nodilumiztur\u012bgiem materi\u0101liem, moderniem ugunsiztur\u012bgiem materi\u0101liem un smalkkeramikas izstr\u0101d\u0101jumiem, griez\u0113jinstrumentiem un siltuma atg\u016b\u0161anas sist\u0113m\u0101m.<\/p>\n
Metalur\u0123ij\u0101 to izmanto cietu materi\u0101lu, piem\u0113ram, met\u0101lu, akmens, ugunsiztur\u012bgo materi\u0101lu un \u010duguna, grie\u0161anai un sl\u012bp\u0113\u0161anai. Turkl\u0101t t\u0101 ciet\u012bbas, iztur\u012bbas, siltumvad\u012btsp\u0113jas un iztur\u012bbas pret koroziju kombin\u0101cija padara to par ide\u0101lu abraz\u012bvo materi\u0101lu.<\/p>","protected":false},"excerpt":{"rendered":"
Sil\u012bcija karb\u012bda pulveri augstas stipr\u012bbas keramikai Sil\u012bcija karb\u012bda pulveri pla\u0161i izmanto k\u0101 abraz\u012bvu materi\u0101lu met\u0101lu un keramikas deta\u013cu tr\u012b\u0161an\u0101, sl\u012bp\u0113\u0161an\u0101 un pul\u0113\u0161an\u0101. Turkl\u0101t \u0161o pulveri var izmantot vair\u0101k\u0101s r\u016bpniec\u012bbas nozar\u0113s, pateicoties t\u0101 stipr\u012bbas, siltumvad\u012btsp\u0113jas un iztur\u012bbas pret koroziju \u012bpa\u0161\u012bb\u0101m. Sil\u012bcija karb\u012bdu var izveidot divos procesos - reakcijas ... Las\u012bt t\u0101l\u0101k<\/a><\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-67","post","type-post","status-publish","format-standard","hentry","category-knowledge"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/siliconcarbidepowders.com\/lv\/wp-json\/wp\/v2\/posts\/67","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/siliconcarbidepowders.com\/lv\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/siliconcarbidepowders.com\/lv\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/siliconcarbidepowders.com\/lv\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/siliconcarbidepowders.com\/lv\/wp-json\/wp\/v2\/comments?post=67"}],"version-history":[{"count":1,"href":"https:\/\/siliconcarbidepowders.com\/lv\/wp-json\/wp\/v2\/posts\/67\/revisions"}],"predecessor-version":[{"id":68,"href":"https:\/\/siliconcarbidepowders.com\/lv\/wp-json\/wp\/v2\/posts\/67\/revisions\/68"}],"wp:attachment":[{"href":"https:\/\/siliconcarbidepowders.com\/lv\/wp-json\/wp\/v2\/media?parent=67"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/siliconcarbidepowders.com\/lv\/wp-json\/wp\/v2\/categories?post=67"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/siliconcarbidepowders.com\/lv\/wp-json\/wp\/v2\/tags?post=67"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}