Uyini umehluko phakathi kwe-reaction bonded ne-sintered silicon carbide?

Uma kukhulunywa ngokuthiizitsha zobumba ze-silicon carbide, kunezinhlobo ezimbili eziyinhloko: ukusabela okuhlanganisiwe nokusikiwe. Nakuba zombili izinhlobo ze-ceramics zinikeza amazinga aphezulu okuqina nokumelana nokuguguleka, kunezinhlobo ezithile eziyinhloko phakathi kwalezi ezimbili.

Ake siqale nge-reaction bonded silicon carbide ceramics. Lezi ceramics ziphakathi kuka-85% no-90% we-silicon carbide futhi ziqukethe i-silicon ethile. Ukumelana kwazo nokushisa okuphezulu kungu-1380°C. Enye yezinzuzo eziyinhloko ze-reaction-bonded silicon carbide ceramics ukuthi zingenziwa ngokwezifiso ngobukhulu obukhulu kanye nezimo. Lokhu kuzenza zibe izinto ezifanelekile zokudala imikhiqizo eyingqayizivele neyobungcweti. Ngaphezu kwalokho, i-coefficient ephansi yokwanda kanye nokumelana okuhle kokuguguleka kwalezi ceramics kuzenza zibe ukukhetha okuthandwayo embonini yeziphepho zezimayini.

I-silicon carbide engenangcindezi inokuqukethwe okuphezulu kwe-silicon carbide, okungafinyelela ngaphezu kwama-99%, kanti ukumelana nokushisa okuphezulu kakhulu kungu-1650°C. I-coefficient ethile yokwandisa ifakwa ngesikhathi senqubo yokusila, okwenza i-SiC engenangcindezi ibe yindawo ekahle yokukhiqiza izingxenye ze-SiC ezinembile. Ngenxa yokunemba kwayo okuphezulu, i-silicon carbide engenangcindezi ivame ukusetshenziselwa ukwenza isikhunta kanye nezingxenye ezinembile ezingagugi.

Ngaphezu kokubumba okunembile kanye nezingxenye zokuguguleka, imishini ye-oven esezingeni eliphezulu embonini yamakhemikhali ingasebenzisa ukumelana okuphezulu kokushisa kwe-silicon carbide engenangcindezi. Kulabo abafuna amashubhu okushintshanisa ukushisa asebenzayo emishini yabo yokucubungula amakhemikhali, i-silicon carbide engenangcindezi ngokuqinisekile iyisinqumo sezinto ezibonakalayo esisebenzisekayo.

Ngokuvamile, ukubopha okusabelayo kanye nokushiswa okungenangcindezi kwe-SiC ceramics, yize ngayinye inezinzuzo kanye nokungalungi kwayo, kufanelekile ezimbonini nasezinhlelweni ezahlukene. Uma udinga umkhiqizo ohlukile noma omkhulu ongamelana nokuguguleka, i-reaction bonded silicon carbide ceramics ingaba yisinqumo esifanele kuwe. Ukuze uthole izingxenye ezithambile ezidinga ukumelana namazinga okushisa aphezulu, i-sintered silicon carbide engenangcindezi ingaba yisinqumo esingcono. Kungakhathaliseki ukuthi ukhetha luphi uhlobo lwe-silicon carbide ceramic, ungaqiniseka ukuthi izokunikeza ukuqina kanye nokusimama okudingekayo kuphrojekthi yakho.