Inkqubo yoNyango lobushushu obuphezulu kwii-Alloys eziSetyenzisiweyo

Ukunyangwa kobushushu obuphezulu bee-alloys ezinzima kuqhutyelwa kwisithando somlilo esilungiselelwe ngokukodwa. Iialloyi zenkunkuma ziphantsi kobushushu obuphezulu obungaphezulu kwe-1800 ℃ kwindawo ekhuselayo yegesi. Ngethuba le nkqubo, i-cobalt esetyenziswa njenge-binder metal iyancibilika kwaye ibilise, ibangela ukuba i-alloy ikhubaze kwaye umthamo wayo wandise kakhulu. Ulwakhiwo lwe-alloy luba yi-porous kunye ne-honeycomb-like, okwenza ukuba i-alloy eqinile ibe lula kakhulu ukuyiqhekeza kunye nokusebenza. Ngethuba lonyango oluphezulu, inani elikhulu lesigaba samanzi livela kwi-alloy, liqinisa ukusabalalisa kwee-athomu kunye nokuphucula ukuchithwa kunye nemvula ye-WC. Iinkozo zeWC zikhula ngokukhawuleza, zikhula ukusuka kwi-1 ukuya kwi-2 μm ukuya kumashumi okanye namakhulu eemicrometers. Ngaphezu koko, ngexesha lokuphinda kuhlaziywe i-WC, iziphene kwisakhiwo sokutya okuziinkozo zipheliswe, kwaye i-crystal structure ye-WC iphelele ngakumbi. Kwangaxeshanye, izixa zomkhondo zezinye isinyithi, ukungcola okungeyontsimbi, kunye nokungcola okuyingozi okuqulethwe ekuqaleni kwi-alloy kuyasuswa.

Ubungakanani obuziinkozo be-alloy bukhula ngokukhawuleza ngokunyuka kweqondo lokushisa eliphezulu lokushisa. Nangona kunjalo, xa ubushushu bonyango buhlala buhlala, ukwandiswa kwexesha lonyango akukho mpembelelo ebalulekileyo ekunyukeni kobungakanani bengqolowa ye-alloy. Ubungakanani obuziinkozo be-alloy buguquka ngobushushu bonyango kunye nexesha lokubamba emva kokunyanga kobushushu obuphezulu. Isitshixo sokulawula inkqubo yonyango oluphezulu kukulawula ubushushu bonyango. Kodwa iqondo lobushushu bonyango ayithethi ukuba liphezulu kakhulu. Ukuba ukushisa kwonyango kuphezulu kakhulu, kuya kuqala kuchaphazela ubomi benkonzo yezixhobo eziphezulu zokushisa; okwesibini, kuya kubangela isigaba solwelo kakhulu kwi-alloy, ukunyuka kwe-volatilization yesigaba se-Co, ukuwa kwe-WC skeleton, kunye nokwenza i-alloy idibanise ne-crucible, eyenza kube nzima ukuyicoca kunye nokuphuka. Ngokubanzi, inkqubo yonyango lobushushu obuphezulu ilawulwa malunga ne-2000 ℃, kwaye kuyacetyiswa ukuba ubambe iiyure ezi-2.