Sil\u012bcija karb\u012bda keramika k\u0101 izcilas veiktsp\u0113jas un augstas temperat\u016bras materi\u0101li arvien vair\u0101k tiek izmantota naftas \u0137\u012bmijas, dzelzs un t\u0113rauda metalur\u0123ijas, ma\u0161\u012bnb\u016bves un elektronikas, kosmisk\u0101s avi\u0101cijas, ener\u0123\u0113tikas un vides aizsardz\u012bbas, kodolener\u0123ijas, autob\u016bves, augstas temperat\u016bras kr\u0101sns un cit\u0101s r\u016bpniec\u012bbas jom\u0101s.
\n(1) Bl\u012bv\u0113juma gredzeni, gult\u0146i, gult\u0146i ar riev\u0101m
\nBez spiediena sa\u0137epin\u0101ti un reakcijas sa\u0137epin\u0101ti bl\u012bvi sil\u012bcija karb\u012bda materi\u0101li, jo tiem ir lieliska nodilumiztur\u012bba, augsta siltumvad\u012btsp\u0113ja, augsta temperat\u016bra un iztur\u012bba pret koroziju, ir ide\u0101li materi\u0101li bl\u012bvgredzenu, gult\u0146u un berzes aizsardz\u012bbas bukses ra\u017eo\u0161anai. To var apstr\u0101d\u0101t da\u017e\u0101d\u0101s form\u0101s un bl\u012bvgredzenos ar augstu izm\u0113ru precizit\u0101ti un virsmas apdari, un izmantot k\u0101 meh\u0101niskos bl\u012bv\u0113jumus daudz\u0101s skarb\u0101s vid\u0113s. Piem\u0113ram, tos izmanto sk\u0101b\u0113m un s\u0101rmiem iztur\u012bgu s\u016bk\u0146u bl\u012bv\u0113\u0161anas ier\u012bc\u0113s un sl\u012bdier\u012bc\u0113s ku\u0123u b\u016bves, \u0137\u012bmijas, metalur\u0123ijas, naftas un pap\u012bra r\u016bpniec\u012bb\u0101, un tos pla\u0161i izmanto to lab\u0101s herm\u0113tiskuma un ilg\u0101 kalpo\u0161anas laika d\u0113\u013c. K\u0101 piem\u0113ru var min\u0113t Sic bl\u012bv\u0113juma gredzenu automobi\u013cu \u016bdens dzes\u0113\u0161anas s\u016bk\u0146a sejas bl\u012bv\u0113juma pielietojumu. Sik sejas bl\u012bv\u0113jumi galvenok\u0101rt nodro\u0161ina herm\u0113tiskumu rot\u0113jo\u0161aj\u0101 saskarn\u0113, nov\u0113r\u0161ot \u0161\u0137idruma vai g\u0101zes nopl\u016bdi no bl\u012bv\u0113juma puses uz otru pusi. Automobi\u013cu dzin\u0113ju \u016bdens dzes\u0113\u0161anas cirkul\u0101cijas \u016bdens s\u016bk\u0146iem, izmantojot keramikas gredzenveida bl\u012bv\u0113jumus, var izvair\u012bties no \u016bdens nopl\u016bdes s\u016bk\u0146a rot\u0101cijas laik\u0101, k\u0101 ar\u012b vienlaic\u012bgi nodro\u0161in\u0101t gan bl\u012bv\u0113\u0161anu, gan sl\u012bd\u0113\u0161anu. Agr\u0101k parasti izmantoja Al, O, keramikas ra\u017eo\u0161anu, bet tagad izmanto SiC materi\u0101lu, jo SiC, sal\u012bdzinot ar Al.O, ir augsta ciet\u012bba, nodilumiztur\u012bba un labs kalpo\u0161anas laiks. L\u012bdz\u012bgs siC bl\u012bv\u0113juma gredzens ir izmantots ar\u012b automobi\u013cu gaisa kondicion\u0113\u0161anas kompresor\u0101.
\n(2) Lo\u017eu necaurlaid\u012bga keramika
\nSil\u012bcija karb\u012bda keramika, pateicoties augstajai ciet\u012bbai, zemajam bl\u012bvumam, lab\u0101k\u0101m aizsarg\u012bpa\u0161\u012bb\u0101m un zem\u0101k\u0101m cen\u0101m (sal\u012bdzin\u0101jum\u0101 ar B, C keramiku), ko izmanto lo\u017eu necaur\u0161aujo\u0161\u0101s bru\u0146\u0101s, ir - zin\u0101mas konkurences priek\u0161roc\u012bbas. T\u0101s aizsargsp\u0113jas ir lab\u0101kas nek\u0101 Al2O3 keramikas, lai gan nedaudz zem\u0101kas nek\u0101 B, C keramikas (apm\u0113ram B, C keramikas 70% ~ 80%), bet SiC keramikas ra\u017eo\u0161anas izmaksas ir daudz zem\u0101kas nek\u0101 B.C. Pa\u0161laik atmosf\u0113ras spiediena sa\u0137epin\u0101\u0161anas SiC un reakcijas sa\u0137epin\u0101\u0161anas SiC keramikas pl\u0101ksnes ir \u012bpa\u0161i piem\u0113rotas lieliem daudzumiem un aizsargbru\u0146as nevar b\u016bt p\u0101r\u0101k biezas un smagas gad\u012bjumos. Piem\u0113ram, Amerikas Savienoto Valstu uz\u0146\u0113mums CERCOM, INC ir sagatavojis augstas ciet\u012bbas, augstas iztur\u012bbas un augsta Veibula modu\u013ca (\u010detru punktu lieces iztur\u012bba 580 MPa, l\u016bzuma iztur\u012bba Kxc 4,7 MPa \u25cf m1\/2, Veibula modulis m = 17) SiC keramika ir lielisks lo\u017eu necaurlaid\u012bgs materi\u0101ls.
\n(3) Sprausla
\nNaftas r\u016bpniec\u012bb\u0101, ener\u0123\u0113tik\u0101, vides aizsardz\u012bb\u0101, kosmosa ra\u0137e\u0161u un ma\u0161\u012bnu ra\u017eo\u0161an\u0101 un cit\u0101s jom\u0101s ir j\u0101izmanto da\u017e\u0101das sprauslas, skat\u012bt 8-13. att\u0113lu (g). Sil\u012bcija karb\u012bda keramika sal\u012bdzin\u0101jum\u0101 ar Al2O3 un SiN keramiku ir ciet\u0101ka, iztur\u012bg\u0101ka pret termiskiem triecieniem un lieliski iztur\u012bga pret koroziju, t\u0101p\u0113c to pla\u0161i izmanto. Piem\u0113ram, SiC keramikas kalpo\u0161anas laiks ir 3,5 reizes ilg\u0101ks nek\u0101 Al2O3 keramikas kalpo\u0161anas laiks smil\u0161u str\u016bklas uzga\u013ciem. Reakcijas sa\u0137epin\u0101\u0161anas, bezspiediena sa\u0137epin\u0101\u0161anas un p\u0101rkristaliz\u0101cijas sic var izmantot k\u0101 augstas temperat\u016bras kr\u0101sns deg\u013ca sprauslas un termoelektrostacijas s\u0113ra atdal\u012b\u0161anas sprauslas.<\/p>","protected":false},"excerpt":{"rendered":"
As an excellent performance and high temperature materials, silicon carbide ceramics has been increasingly used in petrochemical, iron and steel metallurgy, machinery and electronics, aerospace, energy and environmental protection, nuclear energy, automotive, high temperature kiln and other industrial fields. (1) Sealing rings, plain bearings Pressureless sintered and reaction sintered dense silicon carbide materials, because of… Read More »Sil\u012bcija karb\u012bda keramiku izmanto bl\u012bvgredzeniem utt.<\/span><\/a><\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"off","neve_meta_content_width":70,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","footnotes":""},"categories":[6],"tags":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/advance-ceramics.com\/lv\/wp-json\/wp\/v2\/posts\/189"}],"collection":[{"href":"https:\/\/advance-ceramics.com\/lv\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/advance-ceramics.com\/lv\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/advance-ceramics.com\/lv\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/advance-ceramics.com\/lv\/wp-json\/wp\/v2\/comments?post=189"}],"version-history":[{"count":2,"href":"https:\/\/advance-ceramics.com\/lv\/wp-json\/wp\/v2\/posts\/189\/revisions"}],"predecessor-version":[{"id":191,"href":"https:\/\/advance-ceramics.com\/lv\/wp-json\/wp\/v2\/posts\/189\/revisions\/191"}],"wp:attachment":[{"href":"https:\/\/advance-ceramics.com\/lv\/wp-json\/wp\/v2\/media?parent=189"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/advance-ceramics.com\/lv\/wp-json\/wp\/v2\/categories?post=189"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/advance-ceramics.com\/lv\/wp-json\/wp\/v2\/tags?post=189"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}