Is \u00e1bhar ceirmeach neamhghn\u00edomhach, crua \u00e9 Carb\u00f3nsileacan (SiC) a bhfuil air\u00edonna fisiceacha den scoth aige. \u00das\u00e1idtear \u00e9 i n-\u00e1bhair athchrosacha agus i n-\u00e1bhair scr\u00edobacha mar gheall ar a chruas, chomh maith le feidhmeanna ardteochta ina bhfuil an chobhsa\u00edocht theirmeach agus an fhriota\u00edocht caitheamh r\u00edth\u00e1bhachtach.<\/p>\n
N\u00edl ach diamant agus carb\u00e1id b\u00f3r\u00f3n n\u00edos crua n\u00e1 SiC. Nuair a bh\u00edonn s\u00e9 an-ghlan, is f\u00e9idir le SiC a bheith gan dath; murach sin, d'fh\u00e9adfadh s\u00e9 sc\u00e1thanna dubha a ghlacadh nuair a th\u00e1irgtear \u00e9 tr\u00ed mhodh Lely.<\/p>\n
Is comhdh\u00fail cheimiceach thar a bheith crua \u00e9 an carb\u00f3n\u00e1it sileacain \u2014 ar a dtugtar carburandam n\u00edos coitianta \u2014 at\u00e1 comhdh\u00e9anta de shileacan agus de charb\u00f3n, agus n\u00ed tharla\u00edonn s\u00e9 sa n\u00e1d\u00far ach go hannamh mar mhoissan\u00edt; \u00e1fach, \u00f3 dheireadh an 19\u00fa haois, t\u00e1 ollt\u00e1irgeadh d\u00e9anta air i bhfoirm p\u00fadair agus chriostail araon.<\/p>\n
Is minic a \u00fas\u00e1idtear carb\u00f3nsileacan dubh (SiC) in \u00e1bhair ghr\u00e1inn\u00edneacha mar gheall ar a air\u00edonna crua agus frithsheasmhacha in aghaidh caitheamh. Ina theannta sin, \u00fas\u00e1idtear SiC freisin mar chuid de l\u00edne\u00e1lacha teannt\u00e1sacha, t\u00e9itheoir\u00ed\/eilimint\u00ed t\u00e9imh\/uirlis\u00ed gearrtha\/agus foshraitheanna leathsheoltacha a \u00fas\u00e1idtear le LEDanna agus le gl\u00e9asanna cumhachta.<\/p>\n
T\u00e1 carb\u00f3n-sileacain n\u00edtr\u00edde-cheangailte (NB SiC) d\u00e9anta tr\u00ed phr\u00f3iseas ar a dtugtar n\u00edtri\u00fa, ina nd\u00e9antar gr\u00e1in amha SiC a th\u00e9amh agus a mheascadh le comhdh\u00faile a bhfuil n\u00edtrigin iontu chun \u00e1bhar cumaisc dl\u00fath at\u00e1 l\u00e1idir go meicni\u00fail a chruth\u00fa. Ina theannta sin, t\u00e1 friota\u00edocht den scoth ag an bhfoirm seo de charb\u00f3n-sileacain i gcoinne turraing theirmeach, rud a ligeann d\u00f3 athruithe tapa teochta a sheasamh gan scoilteadh n\u00e1 meath a theacht air le himeacht ama.<\/p>\n
T\u00e1 carb\u00e1id sileacain ar cheann de na h\u00e1bhair cheramacha neamh-ocsa\u00edde is l\u00e1idre, le r\u00e1t\u00e1il chruas Knoop at\u00e1 thar a bheith ard idir diamant agus n\u00edtr\u00edd bor\u00e1in chi\u00fabach, rud a thugann friota\u00edocht fadt\u00e9armach ar chaitheamh agus cuimilt agus neart chun teochta\u00ed agus strusanna f\u00edor-ard a sheasamh.<\/p>\n
\u00das\u00e1idtear p\u00fadar SiC dubh go forleathan ag tionscail na ngluaiste\u00e1n agus na heitl\u00edochta chun p\u00e1irteanna miotail agus ceirmeacha a ghrind\u00e1il, a pholaiti\u00fa agus a lap\u00e1il go tois\u00ed beachta le bailchr\u00edocha m\u00edn. Mar gheall go bhfuil neart n\u00edos airde aige n\u00e1 an diamant, is minic a roghna\u00edtear an scr\u00edob\u00e1n seo thar an gceann eile.<\/p>\n
T\u00e1 Carb\u00f3n Sileacain Ceangailte le Frithghn\u00edomh (RB SiC) d\u00e9anta tr\u00ed shileacan le\u00e1ite a instealladh isteach i n-\u00e1bhar carb\u00f3in p\u00f3ireach at\u00e1 m\u00fanlaithe i gcruth an chomhph\u00e1irt at\u00e1 ag teast\u00e1il, as a dtagann ceirmeach strucht\u00farach ardfheidhm\u00edochta at\u00e1 frithsheasmhach in aghaidh ceimice\u00e1n agus a bhfuil c\u00f3imheas \u00edseal leathnaithe theirmigh aige. Is f\u00e9idir RB SiC a fh\u00e1il i bpumpha\u00ed agus i s\u00e9ala\u00ed meicni\u00fala, i mbearna\u00ed agus i gcomhph\u00e1irteanna caitheamh n\u00edos m\u00f3.<\/p>\n
T\u00e1 carb\u00f3n sileacain ar cheann de na tr\u00ed shubstaint is crua ar Domhan, agus \u00e9 sa dara h\u00e1it i ndiaidh diamaint agus carb\u00f3n b\u00f3r. Mar gheall ar an gcruas dochreidte seo, is f\u00e9idir le carb\u00f3n sileacain br\u00fa foircneach agus strus meicni\u00fail araon a sheasamh, rud a fh\u00e1gann go bhfuil s\u00e9 oiri\u00fanach do chomhph\u00e1irteanna aerasp\u00e1is, d'fheidhmchl\u00e1ir ghluaiste\u00e1n agus d'uirlis\u00ed gearrtha.<\/p>\n
T\u00e1 ceirmeach ardfheidhm\u00edochta an-fhrithsheasmhach in aghaidh creimthe agus caitheamh, agus is f\u00e9idir leis athruithe tapa teochta a sheasamh gan scoilteadh n\u00e1 d\u00edfhoirmi\u00fa. Ina theannta sin, is f\u00e9idir \u00e9 a phr\u00f3ise\u00e1il ina cheirmeacha feidhmi\u00fala, ina \u00e1bhair athraith\u00edocha ardl\u00e9ibh\u00e9il agus fi\u00fa ina \u00e1bhair gharbhlacha le h\u00fas\u00e1id.<\/p>\n
Is uirlis riachtanach \u00e9 p\u00fadar carb\u00f3nsileacain dubh (SiCp) chun miotal, ceirmeach agus gloine a gh\u00e9ar\u00fa, a lap\u00e1il agus a snas\u00e1il le haghaidh tois\u00ed beachtais agus dromchla\u00ed m\u00edn. Chomh maith lena \u00fas\u00e1id mar \u00e1bhar garbhaithe, is f\u00e9idir le SiC feidhmi\u00fa freisin mar fhrithocsa\u00eddeoir i nd\u00e9anamh cruach agus i gciorcl\u00e1in chr\u00e9, chomh maith le bheith ina \u00e1bhar at\u00e1 frithsheasmhach in aghaidh ardteochta i gciorcl\u00e1in chr\u00e9. I measc na n-athruithe eile ar SiC t\u00e1 carb\u00e1id sileacain n\u00edtr\u00edde nasctha (NB SiC) agus carb\u00e1id sileacain n\u00edtr\u00edde imoibri\u00fa-nasctha s\u00edntrithe (SRBSN); t\u00e1irgeann na pr\u00f3isis seo SRBSN tr\u00ed th\u00e9amh foirn\u00e9ise frithsheasmha\u00ed.<\/p>\n
Is rogha \u00e1bhair den scoth \u00e9 an carb\u00e1id sileacain d'fheidhmchl\u00e1ir a \u00e9il\u00edonn seasmhacht agus cruas f\u00edor-ard, mar shampla cosc\u00e1in gluaiste\u00e1in n\u00f3 pl\u00e1ta\u00ed ceirmeacha a fhaightear i veisteanna frithpheilte. Ina theannta sin, t\u00e1 air\u00edonna frithsheasmhachta cheimiceacha den scoth ag an \u00e1bhar seo agus is f\u00e9idir leis fi\u00fa teochta\u00ed arda a sheasamh gan le\u00e1.<\/p>\n
T\u00e1 Moissan\u00edte ar cheann de na h\u00e1bhair shint\u00e9iseacha is crua, le r\u00e1t\u00e1il chruas Mohs de 9, at\u00e1 inchompar\u00e1ide le diamant. C\u00e9 go bhfuil s\u00e9 le f\u00e1il go n\u00e1d\u00fartha mar an mianra annamh moissan\u00edte, baintear \u00fas\u00e1id as pr\u00f3isis ollt\u00e1irgthe a \u00fas\u00e1ideann p\u00fadar sileacain agus p\u00fadair charb\u00f3in tr\u00ed phr\u00f3isis shint\u00e9irithe chun an tsubstaint shint\u00e9iseach chrua seo a ollt\u00e1irgeadh.<\/p>\n
M\u00e9ada\u00edonn neart an charb\u00e1ide sileacain tr\u00ed annealing de bharr nasc hidrigine ar dhromchla\u00ed neamhpholacha, agus t\u00e1 s\u00e9 \u00fas\u00e1ideach mar dh\u00ed-ocsa\u00eddeoir i nd\u00e9anamh cruach tr\u00ed charbur\u00fa a spreagadh agus r\u00e1ta\u00ed aisghabh\u00e1la na n-eilimint\u00ed c\u00f3imhiotail a mh\u00e9ad\u00fa. De bharr a chobhsa\u00edochta teirmeacha agus a neamhghn\u00edomha\u00edochta ceimice, cinnt\u00edonn comhph\u00e1irteanna carb\u00e1ide sileacain d'fheiste\u00e1in phr\u00f3ise\u00e1la leathsheolt\u00f3ra sliseog feidhm\u00edocht iontaofa fi\u00fa i dtimpeallachta\u00ed ardteochta.<\/p>\n
Cuireann p\u00fadair charb\u00e1ide sileacain an teaglaim id\u00e9alach de chruas agus de chumhacht seoltachta ar f\u00e1il nuair a \u00fas\u00e1idtear iad mar \u00e1bhar scr\u00edobach n\u00f3 i gcomhph\u00e1irteanna ceirmeacha frith-chaithimh, chomh maith le iad a nascadh le ch\u00e9ile tr\u00ed shint\u00e9ar\u00fa chun t\u00e1irg\u00ed ceirmeacha tionscla\u00edocha ardfheidhm\u00edochta a chruth\u00fa.<\/p>\n
T\u00e1 ceirmeach d\u00e9-ocsa\u00edde sileacain ar cheann de na h\u00e1bhair cheirmeacha is m\u00f3 a bhfuil \u00e9ileamh orthu sa l\u00e1 at\u00e1 inniu ann mar gheall ar a hair\u00edonna iontacha, a chuims\u00edonn r\u00e9imse \u00f3 mharthanacht fhoirfe agus friota\u00edocht in aghaidh creimthe go cobhsa\u00edocht theirmeach agus cur suas le teas \u2013 c\u00e1il\u00edochta\u00ed a d'fh\u00e1g gur ceann de na pr\u00edomhroghanna \u00e9 do phada\u00ed cosc\u00e1in gluaiste\u00e1n tomhalt\u00f3ir\u00ed agus do phl\u00e1ta\u00ed veiste buachalla araon. Sol\u00e1thra\u00edonn d\u00e9-ocsa\u00edd sileacain idir neart agus seasmhacht theirmeach.<\/p>","protected":false},"excerpt":{"rendered":"
P\u00fadar Carb\u00e1id Sileacain ag R\u00e9abhl\u00f3idi\u00fa Neart Ceirmeach Is \u00e1bhar ceirmeach neamhghn\u00edomhach, crua \u00e9 an Carb\u00e1id Sileacain (SiC) a bhfuil air\u00edonna fisiceacha den scoth aige. \u00das\u00e1idtear \u00e9 i n-\u00e1bhair athchraitheacha agus i n-\u00e1bhair scr\u00edobacha mar gheall ar a chruas, chomh maith le feidhmeanna ardteochta ina bhfuil an chobhsa\u00edocht theirmeach agus an friota\u00edocht caitheamh r\u00edth\u00e1bhachtach. N\u00edl ach an diamant agus an carb\u00e1id b\u00f3r\u00f3n n\u00edos crua n\u00e1 SiC. Nuair a bh\u00edonn s\u00e9 an-ghlan, \u2026 L\u00e9igh tuilleadh<\/a><\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-69","post","type-post","status-publish","format-standard","hentry","category-product"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/siliconcarbidepowders.com\/ga\/wp-json\/wp\/v2\/posts\/69","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/siliconcarbidepowders.com\/ga\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/siliconcarbidepowders.com\/ga\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/siliconcarbidepowders.com\/ga\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/siliconcarbidepowders.com\/ga\/wp-json\/wp\/v2\/comments?post=69"}],"version-history":[{"count":1,"href":"https:\/\/siliconcarbidepowders.com\/ga\/wp-json\/wp\/v2\/posts\/69\/revisions"}],"predecessor-version":[{"id":70,"href":"https:\/\/siliconcarbidepowders.com\/ga\/wp-json\/wp\/v2\/posts\/69\/revisions\/70"}],"wp:attachment":[{"href":"https:\/\/siliconcarbidepowders.com\/ga\/wp-json\/wp\/v2\/media?parent=69"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/siliconcarbidepowders.com\/ga\/wp-json\/wp\/v2\/categories?post=69"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/siliconcarbidepowders.com\/ga\/wp-json\/wp\/v2\/tags?post=69"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}