N\u00ed thugtar an aird ch\u00e9anna do charb\u00f3n\u00e1it sileacain n\u00edtr\u00edd-cheangailte agus a thugtar do SiC imoibri\u00fa-cheangailte n\u00f3 do SiC siont\u00e1ilte. Is cuma sin. T\u00e1 s\u00e9 i mbun a chuid f\u00e9in a dh\u00e9anamh ag tac\u00fa le carranna \u00e1ithe, ag l\u00edne\u00e1il ceall al\u00famanaim, agus ag cur suas le caitheamh nach f\u00e9idir le br\u00edc\u00ed ocsa\u00edd-cheangailte a sheasamh. Chaith m\u00e9 a dh\u00f3thain ama i dteannta NSiC \u2014 litr\u00edtear NBSiC n\u00f3 SiC nasctha le n\u00edtr\u00edd air freisin \u2014 le r\u00e1 go soil\u00e9ir: n\u00ed \u201cleagan buis\u00e9id\u201d de SiC dl\u00fath \u00e9. Is \u00e1bhar difri\u00fail \u00e9 a bhfuil post difri\u00fail aige.<\/p>\n
T\u00e1 an t-oideas simpl\u00ed ar ph\u00e1ip\u00e9ar. T\u00f3gann t\u00fa gr\u00e1inn\u00edn\u00ed carb\u00f3n\u00e1ide sileacain, cuireann t\u00fa miotal sileacain leo, m\u00fanla\u00edonn t\u00fa an cruth, ansin loisgeann t\u00fa sa n\u00edtrigin iad. D\u00e9antar n\u00edtr\u00edd sileacain den tsileacain agus is \u00e9 an n\u00edtr\u00edd sin an ceangl\u00f3ir a choinn\u00edonn na gr\u00e1inn\u00edn\u00ed SiC le ch\u00e9ile. Is iond\u00fail go mb\u00edonn thart ar 70\u201380% SiC agus 20\u201330% Si\u2083N\u2084 sna comhlachta\u00ed. B\u00edonn an crapadh le linn an n\u00edtr\u00eddithe beag, agus sin an f\u00e1th gur f\u00e9idir leat pl\u00e1ta\u00ed m\u00f3ra, br\u00edc\u00ed, agus cruthanna casta a dh\u00e9anamh gan an fhadhb mh\u00edchumtha a bh\u00edonn ag roinnt ceirmeach eile.<\/p>\n
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De ghn\u00e1th, b\u00edonn an dl\u00fas sa raon 2.6\u20132.8 g\/cm\u00b3. Is minic a bh\u00edonn an p\u00f3rachas oscailte ar ghr\u00e1id chaighde\u00e1nacha thart ar 12\u201317%. Is \u00e9 an p\u00f3rachas sin an ch\u00e9ad rud a thuigeann daoine go m\u00edcheart. N\u00ed locht \u00e9 de r\u00e9ir r\u00e9amhshocraithe. Sin an f\u00e1th a bhfuil an t-\u00e1bhar in ann turraing theirmeach a sheasamh a scoilfeadh corp l\u00e1n-dhl\u00fath, agus an f\u00e1th a bhfuil s\u00e9 n\u00edos \u00e9adroime n\u00e1 SiC nasctha le frithghn\u00edomh\u00fa i gcarr \u00e1ithe. D\u00e9antar roinnt gr\u00e1d nua-aimseartha a athdh\u00f3 n\u00f3 a fhoirmli\u00fa chun p\u00f3ireanna dromchla a dh\u00fanadh le craiceann sileac\u00e1ite. Iompra\u00edonn siad si\u00fad n\u00edos cos\u00fala le h\u00e1bhar teanntach s\u00e9alaithe n\u00e1 le sp\u00fainse.<\/p>\n
T\u00e1 an neart n\u00edos \u00edsle n\u00e1 mar at\u00e1 ag SiSiC dl\u00fath. Is f\u00e9idir le mod\u00fal briste ag teocht an tseomra i ngr\u00e1id choitianta \u00e1ith agus teo-dh\u00edonacha a bheith sna deicheanna de MPa, n\u00ed an sc\u00e9al faoi 250 MPa a chloiseann t\u00fa i gc\u00e1s gathanna nasctha imoibri\u00fach\u00e1in. Is \u00e9 an chuid \u00fas\u00e1ideach n\u00e1 an m\u00e9id a tharla\u00edonn ag an teocht. Coinn\u00edonn carb\u00f3n\u00e1it sileacain n\u00edtr\u00edde-cheangailte an cumas ualaigh i bhfad os cionn an phointe ina dtosa\u00edonn sileacan saor i SiC imoibri\u00fa-cheangailte ag \u00e9ir\u00ed bog. Is minic a luaitear an tseirbh\u00eds phraitici\u00fail sa raon 1450\u20131600\u00b0C, ag brath ar an atmaisf\u00e9ar, ar an ualach, agus ar c\u00e9 acu is ea an gr\u00e1d corp m\u00edn sleamhn\u00e1n-teilgthe n\u00f3 br\u00edce br\u00faite n\u00edos garbha. M\u00e1 ghlacann t\u00fa an uimhir mharga\u00edochta gan an dualgas a sheice\u00e1il, cromfaidh t\u00fa pl\u00e1ta f\u00f3s.<\/p>\n
T\u00e1 an t-iniomparthacht theirmeach go maith i gcompar\u00e1id le cord\u00e9ar\u00edt n\u00f3 muil\u00edt, agus de ghn\u00e1th n\u00edos \u00edsle n\u00e1 RBSiC dl\u00fath. T\u00e1 an leathn\u00fa \u00edseal. Is \u00e9 an teaglaim sin, mar aon leis an nasc n\u00edtr\u00edde, an f\u00e1th a maireann an trosc\u00e1n an t\u00e9amh agus an fuar\u00fa gan scoilteadh f\u00edne\u00e1ilte a fhorbairt D\u00e9 M\u00e1irt.<\/p>\n
Go ceimiceach, t\u00e1 s\u00e9 seasmhach in go leor atmaisf\u00e9ar tionscla\u00edoch. Is iad al\u00famanam le\u00e1ite agus criolait an c\u00e1s c\u00e1ili\u00fail: ba \u00e9 SiC nasctha le n\u00edtr\u00edd an t-\u00e1bhar roghnaithe do thaobhbhalla\u00ed i gcill\u00edn\u00ed laghdaithe toisc gur dh\u00f3igh an carb\u00f3n agus n\u00e1r mhair an br\u00edc\u00ed ocsa\u00edde. Seasann s\u00e9 freisin n\u00edos fearr in aghaidh scr\u00edobtha, go leor slaganna, agus an g\u00e1is shalach i dcyclones n\u00e1 br\u00edc\u00ed SiC at\u00e1 nasctha le cr\u00e9. N\u00edl s\u00e9 s\u00edora\u00ed. D\u00e9anfaidh alcail\u00ed l\u00e1idre, n\u00edtri\u00fa bocht le sileacan saor f\u00e1gtha, agus ocsa\u00eddi\u00fa m\u00edch\u00faramach ar an aghaidh the d\u00edobh\u00e1il d\u00f3 f\u00f3s.<\/p>\n
Is gn\u00f3 laeth\u00fail \u00e9 trosc\u00e1n \u00e1ith. B\u00e1id, pl\u00e1ta\u00ed, socraitheoir\u00ed, cuaill\u00ed, agus b\u00edoma\u00ed i gc\u00fair\u00e9is sl\u00e1int\u00edochta, i gc\u00fair\u00e9is bhoird, i bpoirceall\u00e1n leictreach, agus i gc\u00edor\u00f3ga teicni\u00fala. I gcompar\u00e1id le cord\u00e9ara\u00edt, faigheann t\u00fa teocht n\u00edos airde, ualach n\u00edos fearr, codanna n\u00edos tana\u00ed, agus n\u00edos l\u00fa mais mharbh san \u00e1ith. N\u00ed fil\u00edocht \u00e9 an pointe deireanach sin. Cialla\u00edonn mais n\u00edos l\u00fa trealaimh n\u00edos m\u00f3 earra\u00ed agus n\u00edos l\u00fa breosla in aghaidh an timthrialla.<\/p>\n
Is \u00e9 al\u00famanam an teach m\u00f3r eile. Teasta\u00edonn seoltacht theirmeach, neart meicni\u00fail, agus friota\u00edocht ar cheimic an fholcad\u00e1in \u00f3 bhlocanna taobhbhalla i l\u00ednte pota. D\u00e9anann NSiC an obair sin ar chostas at\u00e1 inghlactha ag monarchana. Baineann an loighic ch\u00e9anna le stoc \u00edochtair na hionad teasa, le criosanna caitheamh dramha\u00edola-go-fuinneamh, agus le l\u00edne\u00e1lacha ciocl\u00f3in san mhianad\u00f3ireacht n\u00f3 sa ghinr\u00e9iteach: gr\u00e1inne crua SiC, nasc a sheasann don teas, agus cruth ar f\u00e9idir leat a shuite\u00e1il mar bhr\u00edce n\u00f3 mar ph\u00edosa teilgthe.<\/p>\n
Tagann p\u00e1irteanna caitheamh chun solais freisin \u2014 t\u00edleanna, soith\u00edn\u00ed, p\u00edosa\u00ed caid\u00e9il \u2014 nuair a bh\u00edonn an timpeallacht te agus gr\u00e1inn\u00edneach ach nach bhfuil g\u00e1 agat le p\u00f3ireacht nach m\u00f3r a bheith nialasach de SiC nasctha tr\u00ed imoibri\u00fa. M\u00e1 t\u00e1 an sloda fuar agus gurb \u00e9 an t-aon namhaid n\u00e1 caitheamh sleamhn\u00e1in, is minic a mhaireann l\u00edne\u00e1il dhl\u00fath SiSiC n\u00edos faide. M\u00e1s iad an teas, an creimeadh agus an timthriall teirmeach an namhaid, tagann cuma chliste ar NSiC.<\/p>\n
T\u00e1 carb\u00f3n sileacain nasctha le frithghn\u00edomh\u00fa n\u00edos dl\u00faithe, n\u00edos l\u00e1idre, agus n\u00edos teinne. D\u00e9antar gathanna, roll\u00f3ga, agus p\u00e1irteanna caitheamh beachtais den scoth leis faoi bhun thart ar 1350\u20131380\u00b0C. Os cionn na teochta sin, is \u00e9 sileacan saor an ceannas. N\u00edl an linn mhiotail sin sa mhicristrucht\u00far ag NSiC, mar sin coinn\u00edonn s\u00e9 ag obair n\u00edos teo. Is \u00e9 an rogha phraitici\u00fail \u00e9 freisin do chruthanna m\u00f3ra teo-dh\u00edonacha nach bhfuil s\u00e9 mar aidhm leo sileacan a insilireadh i mbloc ollmh\u00f3r.<\/p>\n
\u00c9ir\u00edonn SiC athchriostalaithe n\u00edos teo f\u00f3s agus fanann s\u00e9 n\u00edos glaine i roinnt atmaisf\u00e9ar \u00e1ith, ach t\u00e1 s\u00e9 n\u00edos poiri\u00fala agus de ghn\u00e1th n\u00edos laige. T\u00e1 SiC ocsa\u00edd-cheangailte n\u00edos saoire ach is l\u00fa a neart te agus a sheasamh in aghaidh turrainge. Is \u00e9 SiC sint\u00e9irithe an col ceathrar dl\u00fath den scoth agus t\u00e1 a phraghas d\u00e1 r\u00e9ir. T\u00e1 NSiC d\u00edrithe ar an earn\u00e1il ina bhfuil g\u00e1 ag monarchana le feidhm\u00edocht SiC i bp\u00edosa\u00ed m\u00f3ra gan a bheith orthu ceirmeach saotharlainne a cheannach.<\/p>\n
Is \u00e9 an n\u00edtri\u00fa neamhioml\u00e1n an d\u00fanmharf\u00f3ir ci\u00fain. Is f\u00e9idir le bloc cuma mhaith a bheith air ar an taobh amuigh agus siliciam iarmharach n\u00f3 cro\u00edleac\u00e1n lag a cheilt. I gcill al\u00famanaim, is \u00e9ard a tharla\u00edonn n\u00e1 creimeadh luath. I bpl\u00e1ta \u00e1ith, is \u00e9ard a tharla\u00edonn n\u00e1 ocsa\u00eddi\u00fa a dh\u00e9anann p\u00fadar den dromchla agus a laghda\u00edonn an neart. Is clasaic eile \u00e9 taise i gcorp p\u00f3ireach, agus ansin d\u00f3th\u00e1n tapa. Is cuma leis an ngal faoi do sceideal t\u00e1irgthe.<\/p>\n
D\u00e9anann daoine r\u00f3-theas agus r\u00f3-dhl\u00fath smaointeoireacht ar ghr\u00e1d p\u00f3ireach. N\u00ed fead\u00e1n s\u00e9alaithe \u00e9 NSiC. M\u00e1 fh\u00e9adann an t-atmaisf\u00e9ar dul isteach, t\u00e1 t\u00e1bhacht le hocsa\u00eddi\u00fa agus le ceimic an tsraith-chomhla. Agus m\u00e1 t\u00e1 an feidhmchl\u00e1r ina shloda ardluais ag teocht measartha, b'fh\u00e9idir gur cheannaigh t\u00fa \u00e1rachas i gcoinne turraing teirmeach nach raibh uait.<\/p>\n
N\u00e1 seol \u201cbr\u00edce SiC\u201d agus b\u00ed ag s\u00fail le dea-thoradh. Tabhair 'nitride bonded' air. Tabhair an buaicteochta, an t-atmaisf\u00e9ar, an t-ualach, an t-am timthrialla, agus an cheimic \u2014 folcad\u00e1n al\u00famanaim, gal alcalaithe, luaithreach eitilte, sileadh gl\u00f3nra, cib\u00e9 rud at\u00e1 i nd\u00e1ir\u00edre ag teagmh\u00e1il leis an bp\u00e1irt. Iarr dl\u00fas, p\u00f3rachas dealraitheach, mod\u00fal briste te, agus sileacan saor iarmharach. I gc\u00e1s trosc\u00e1in oighinn, fiafraigh an bhfuil an p\u00edosa m\u00fanlaithe le sleamhn\u00e1n m\u00edn-ghr\u00e1inneach n\u00f3 br\u00faite garbh. N\u00ed chaitheann an d\u00e1 th\u00e1irge sin n\u00e1 n\u00ed iompra\u00edonn siad teas ar an mbealach c\u00e9anna.<\/p>\n
Is \u00e9 SiC nasctha le n\u00edtr\u00edd an t-\u00e1bhar a \u00fas\u00e1ideann t\u00fa nuair a bh\u00edonn trealamh ocsa\u00edde tuirseach, t\u00e1 SiC nasctha tr\u00ed imoibri\u00fa r\u00f3-theoranta \u00f3 thaobh teochta de n\u00f3 r\u00f3chostasach i gcodanna m\u00f3ra, agus caithfidh an mhonarcha oibri\u00fa f\u00f3s. N\u00edl s\u00e9 glam\u00fail. Is \u00e9 an phl\u00e1ta a thagann amach as an \u00e1ith d\u00edreach, an taobhbhalla nach slocann, agus an l\u00edne\u00e1il a bh\u00edonn f\u00f3s ann tar \u00e9is na feachtais deireana\u00ed. Sonraigh an gr\u00e1d don dualgas agus fanann s\u00e9 mar sin.<\/p>","protected":false},"excerpt":{"rendered":"
Hotter Than RBSiC, Tougher Than the Old Bricks: A Practical Guide to Nitride Bonded Silicon Carbide Nitride bonded silicon carbide does not get the same attention as reaction bonded SiC or sintered SiC. That is fine. It is busy holding up kiln cars, lining aluminum cells, and taking abrasion that oxide-bonded brick cannot survive. I […]<\/p>\n","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-54","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/nitridebondedsic.com\/ga\/wp-json\/wp\/v2\/posts\/54","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nitridebondedsic.com\/ga\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nitridebondedsic.com\/ga\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nitridebondedsic.com\/ga\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nitridebondedsic.com\/ga\/wp-json\/wp\/v2\/comments?post=54"}],"version-history":[{"count":2,"href":"https:\/\/nitridebondedsic.com\/ga\/wp-json\/wp\/v2\/posts\/54\/revisions"}],"predecessor-version":[{"id":56,"href":"https:\/\/nitridebondedsic.com\/ga\/wp-json\/wp\/v2\/posts\/54\/revisions\/56"}],"wp:attachment":[{"href":"https:\/\/nitridebondedsic.com\/ga\/wp-json\/wp\/v2\/media?parent=54"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nitridebondedsic.com\/ga\/wp-json\/wp\/v2\/categories?post=54"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nitridebondedsic.com\/ga\/wp-json\/wp\/v2\/tags?post=54"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}