I-silicon carbide iziphatha cishe njengedayimane. Akuyona nje kuphela elula kakhulu, kodwa futhi i-ceramic material enzima kakhulu futhi ine-conductivity enhle kakhulu yokushisa, ukunwetshwa okuphansi kwe-thermal futhi imelana kakhulu nama-acids nama-lye.
Nge-silicon carbide ceramics izakhiwo zezinto ezibonakalayo zihlala zingashintshile kuze kufike emazingeni okushisa angaphezu kuka-1,400°C. Imodulus ephezulu ye-Young> 400 GPa iqinisekisa ukuzinza okuhle kakhulu kwe-dimensional. Lezi zakhiwo ezibonakalayo zenza i-silicon carbide imiselwe kusengaphambili ukusetshenziswa njengempahla yokwakha. I-silicon carbide master corrosion, abrasion and erosion ngobuchule njengoba imelana nokugqoka okungqubuzanayo. Izingxenye zisetshenziswa ezitshalweni zamakhemikhali, izigayo, izandisi kanye nama-extruder noma njengama-nozzles, isibonelo.
“Izinhlobonhlobo ze-SSiC (i-sintered silicon carbide) ne-SiSiC (i-silicon infiltrated silicon carbide) sezisunguliwe. Eyakamuva ifaneleka ngokukhethekile ukukhiqizwa kwezingxenye eziyinkimbinkimbi ezinevolumu enkulu.”
I-Silicon carbide iphephile ngokwe-toxicologically futhi ingasetshenziswa embonini yokudla. Olunye uhlelo olujwayelekile lwezingxenye ze-silicon carbide ubuchwepheshe bokuvala uphawu obuguquguqukayo obusebenzisa ama-friction bearings nama-mechanical seals, ngokwesibonelo kumaphampu namasistimu okushayela. Uma kuqhathaniswa nezinsimbi, i-silicon carbide inika amandla izixazululo ezonga kakhulu ngempilo yamathuluzi ende uma isetshenziswa nemidiya enolaka, enezinga eliphezulu lokushisa. I-silicon carbide ceramics nayo ilungele ukusetshenziswa ezimweni ezinzima ku-ballistics, ukukhiqizwa kwamakhemikhali, ubuchwepheshe bamandla, ukukhiqizwa kwephepha kanye nezingxenye zesistimu yamapayipi.
I-Reaction bonded silicon carbide, eyaziwa nangokuthi i-siliconized silicon carbide noma i-SiSiC, iwuhlobo lwe-silicon carbide olukhiqizwa ukusabela kwamakhemikhali phakathi kwe-porous carbon noma i-graphite ene-silicon encibilikisiwe. Ngenxa yokushiyeka kwe-silicon, i-react bonded silicon carbide ivame ukubizwa ngokuthi i-siliconized silicon carbide, noma isifinyezo sayo esithi SiSiC.
Uma i-silicon carbide ehlanzekile ikhiqizwa ngokucwiliswa kwe-silicon carbide powder, ngokuvamile iqukethe imikhondo yamakhemikhali abizwa ngokuthi i-sintering aids, engezwa ukusekela inqubo ye-sintering ngokuvumela amazinga okushisa aphansi e-sintering. Lolu hlobo lwe-silicon carbide luvame ukubizwa ngokuthi i-sintered silicon carbide, noma ifushaniswe ku-SSiC.
I-silicon carbide powder itholakala ku-silicon carbide ekhiqizwa njengoba kuchazwe esihlokweni se-silicon carbide.
(Kubukwe ku: CERAMTEC)[i-imeyili ivikelwe]
Isikhathi sokuthumela: Nov-12-2018