I-silicon carbide iziphatha phantse njengedayimani. Ayisiyonto ilula nje kuphela, kodwa ikwayeyona nto inzima kakhulu kwi-ceramic kwaye inomoya oshushu ogqwesileyo, ikhula kancinci kwaye imelana kakhulu nee-asidi kunye nee-lyes.
Nge-silicon carbide ceramics, iimpawu zezinto zihlala zifana ukuya kuthi ga kumaqondo obushushu angaphezu kwe-1,400°C. I-Young's modulus ephezulu > 400 GPa iqinisekisa uzinzo oluhle kakhulu. Ezi mpawu zezinto zenza i-silicon carbide imiselwe kwangaphambili ukuba isetyenziswe njengezinto zokwakha. I-Silicon carbide iyakwazi ukumelana nokugqwala, ukukrala kunye nokukhukuliseka ngobuchule njengoko imelana nokuguga kokukhuhlana. Izinto ezisetyenzisiweyo zisetyenziswa kwizityalo zeekhemikhali, ii-mills, ii-expanders kunye nee-extruders okanye njengee-nozzles, umzekelo.
"Iintlobo ze-SSiC (i-sintered silicon carbide) kunye ne-SiSiC (i-silicon infilted silicon carbide) zizinzile. Ezi zamva nje zifanelekile ngokukodwa ekuvelisweni kwezinto ezintsonkothileyo ezinkulu."
I-silicon carbide ikhuselekile ngokwetyhefu kwaye ingasetyenziswa kwishishini lokutya. Esinye isicelo esiqhelekileyo sezinto ze-silicon carbide yiteknoloji yokutywina eguquguqukayo esebenzisa ii-friction bearings kunye ne-mechanical seals, umzekelo kwiimpompo nakwiinkqubo zokuqhuba. Xa kuthelekiswa neentsimbi, i-silicon carbide inika izisombululo ezingabizi kakhulu ezinobomi obude bezixhobo xa zisetyenziswa ngemidiya enamandla, enobushushu obuphezulu. Iiceramics ze-silicon carbide nazo zilungele ukusetyenziswa kwiimeko ezinzima kwi-ballistics, kwimveliso yeekhemikhali, kwitekhnoloji yamandla, kwimveliso yamaphepha nakwizinto zenkqubo yepayipi.
I-reaction bonded silicon carbide, ekwaziwa ngokuba yi-siliconized silicon carbide okanye i-SiSiC, luhlobo lwe-silicon carbide eyenziwa yi-chemical reaction phakathi kwe-carbon enemingxuma okanye i-graphite ene-silicon enyibilikisiweyo. Ngenxa yeempawu ezishiyekileyo ze-silicon, i-reaction bonded silicon carbide idla ngokubizwa ngokuba yi-siliconized silicon carbide, okanye isifinyezo sayo i-SiSiC.
Ukuba i-silicon carbide ecocekileyo iveliswa ngokusila i-silicon carbide powder, idla ngokuba neekhemikhali ezibizwa ngokuba zi-sintering aids, ezongezwa ukuxhasa inkqubo yokusila ngokuvumela amaqondo obushushu aphantsi okusila. Olu hlobo lwe-silicon carbide ludla ngokubizwa ngokuba yi-sintered silicon carbide, okanye lufinyezwe ngokuthi yi-SSiC.
Umgubo we-silicon carbide ufunyanwa kwi-silicon carbide eveliswa njengoko kuchaziwe kwinqaku le-silicon carbide.
（Viewed from: CERAMTEC）caroline@rbsic-sisic.com
Ixesha leposi: Novemba-12-2018