I-Reaction sintering silicon carbide yindlela yokulungiselela imathiriyeli yeceramic yokusebenza ephezulu. Iphendula kwaye icinezele i-silicon carbide powder kunye nezinye iikhemikhali phantsi kweemeko zobushushu obuphezulu ukuvelisa ubuninzi obuphezulu, ubunzima obuphezulu, ukuxhathisa ukunxiba okuphezulu kunye nezixhobo zokumelana nomhlwa.
1. Indlela yokulungiselela. Inkqubo yokulungiselela i-silicon carbide esebenzayo idla ngokubandakanya amanyathelo amabini: ukusabela kunye ne-sintering. Kwinqanaba lokusabela, i-silicon carbide powder isabela kunye nezinye iikhemikhali kumaqondo obushushu aphezulu ukwenza iikhompawundi ezinamaqondo aphantsi okunyibilika, njenge-alumina, i-boron nitride kunye ne-calcium carbonate. Ezi khompawundi zinokusebenza njengezibophelelo kunye nezihluzi zokunceda ukunyusa amandla okudibanisa kunye nokumanzi kwe-silicon carbide powders ngelixa unciphisa iipores kunye neziphene kwizinto eziphathekayo. Kwinqanaba le-sintering, imveliso yokusabela ifakwe kwiqondo lokushisa eliphezulu ukwenza i-ceramic material eshinyeneyo. Izinto ezifana nokushisa, uxinzelelo kunye nomoya okhuselayo kufuneka ulawulwe kwinkqubo ye-sintering ukuze kuqinisekiswe ukuba izinto eziphathekayo zisebenza kakuhle. Izinto ezifunyenweyo ze-silicon carbide ceramic zineempawu zokuqina okuphezulu, ukomelela okuphezulu, ukuxhathisa okuphezulu kwe-corrosion kunye nokumelana nokunxiba okuphezulu.
2. Iipropati. I-Reaction-sintered silicon carbide ineepropathi ezininzi ezigqwesileyo, iyenza isetyenziswe ngokubanzi kwiindawo ezininzi. Okokuqala, izixhobo ze-silicon carbide ceramic zinobunzima obuphezulu kakhulu kwaye zinokusika izinto ezinzima njengentsimbi. Okwesibini, izixhobo ze-silicon carbide ceramic zinokumelana nokunxiba kakuhle kwaye zingasetyenziswa ixesha elide phantsi kweemeko ezinzima ezifana nobushushu obuphezulu kunye noxinzelelo oluphezulu. Ukongeza, izixhobo ze-silicon carbide ceramic zinokumelana nokugqwala okuphezulu kunye nozinzo oluphezulu lobushushu, kwaye zingasetyenziselwa ixesha elide kwindawo ezonakalisayo kunye nobushushu obuphezulu.
3. Iinkalo zesicelo. I-Reaction-sintered silicon carbide isetyenziswa kwiindawo ezininzi. Ngokomzekelo, kwishishini lokuvelisa, izinto ze-silicon carbide ceramic zisetyenziswa ngokubanzi kwi-abrasives, izixhobo zokusika kunye neengxenye zokugqoka. Ubunzima bayo obuphezulu kunye nokumelana nokunxiba kwenza kube luncedo ukusika, ukugawula kunye nokugaya
Ilungele ukupolisha kunye namanye amabala. Kwishishini lemichiza, izixhobo ze-silicon carbide ceramic zingasetyenziselwa ukuvelisa iikhemikhali ezifana ne-sulfuric acid kunye ne-acids ezomeleleyo ezifana ne-hydrofluoric acid ngenxa yokumelana ne-corrosion ephezulu kunye nokuzinza okuphezulu kobushushu. Kwintsimi ye-aerospace kunye nokukhusela, izinto ze-silicon carbide ceramic zingasetyenziselwa ukwenza ii-missile casings kunye nezixhobo zokukhusela i-thermal yeenqwelo-moya ezihamba ngesantya esiphezulu. Ukongeza, izixhobo ze-silicon carbide ceramic nazo zingasetyenziswa kwintsimi ye-biomedical ye-artificial joints kunye nezixhobo zotyando lwe-orthopedic, kuba zine-biocompatibility efanelekileyo kunye nokumelana nokunxiba.
I-Reaction sintering silicon carbide yindlela yokulungiselela imathiriyeli yeceramic yokusebenza ephezulu. Iphendula kwaye icinezele i-silicon carbide powder kunye nezinye iikhemikhali phantsi kweemeko zobushushu obuphezulu ukuvelisa ubuninzi obuphezulu, ubunzima obuphezulu, ukuxhathisa ukunxiba okuphezulu kunye nezixhobo zokumelana nomhlwa. I-silicon carbide izinto ze-ceramic zineempawu ezintle, ezifana nobunzima obuphezulu, ukumelana nokunxiba okuphezulu, ukuxhathisa okuphezulu kwe-corrosion kunye nokuzinza kweqondo lokushisa eliphezulu, ngoko ke isetyenziswa ngokubanzi kwiinkalo ezininzi ezifana nokuvelisa, imboni yeekhemikhali, i-aerospace kunye neendawo zokukhusela kunye nemimandla ye-biomedical.
Ixesha lokuposa: Jul-08-2023