Ingcaciso ngokubanzi ye-Reaction Bonded SiC

Jikeleleingcaciso yeImpenduloI-SiC edibeneyo

I-Reaction Bonded SiC ineempawu zoomatshini kunye nokumelana ne-oxidation. Ixabiso layo liphantsi kakhulu. Kuluntu lwangoku, itsale ingqalelo engakumbi kumashishini ahlukeneyo.

I-SiC yi-covalent bond enamandla kakhulu. Kwi-sintering, izinga lokusasazwa liphantsi kakhulu. Kwangaxeshanye, umphezulu wee-particles uhlala ugubungela umaleko we-oxide obhityileyo odlala indima yomqobo wokusasazwa. I-Pure SiC ayitshintshwanga kwaye ayixinene ngaphandle kwezongezo zokusasazwa. Nokuba kusetyenziswa inkqubo yokucinezela ngobushushu, kufuneka ikhethe izongezo ezifanelekileyo. Kuphela kumaqondo obushushu aphezulu kakhulu, apho izinto ezifanelekileyo zobunjineli obusondeleyo kuxinano lwethiyori zinokufunyanwa khona ekufuneka zibe kuluhlu oluqala kwi-1950 ℃ ukuya kwi-2200 ℃. Kwangaxeshanye, imo kunye nobukhulu bayo buya kulinganiselwa. Nangona ii-SIC composites zinokufunyanwa ngokubeka umphunga, zilinganiselwe ekulungiseleleni izinto ezinoxinano oluphantsi okanye ezinoxinano oluncinci. Ngenxa yexesha layo elide lokuthula, iindleko zemveliso ziya kwanda.

I-Reaction Bonded SiC yasungulwa ngo-1950 nguPopper. Umgaqo osisiseko ngulo:

Phantsi kwesenzo samandla e-capillary, i-silicon engamanzi okanye i-silicon alloy enomsebenzi ophendulayo ingene kwi-ceramics ezineembobo ezine-carbon kwaye yakha i-carbon silicon kwi-reaction. I-silicon carbide entsha eyenziweyo ibotshelelwe kwii-particles ze-silicon carbide zokuqala, kwaye ii-pores eziseleyo kwi-filler zizaliswa yi-agent yokufaka ukuze kugqitywe inkqubo yoxinano.

Xa kuthelekiswa nezinye iinkqubo ze-silicon carbide ceramics, inkqubo yokusila ineempawu ezilandelayo:

Ubushushu obuphantsi bokucubungula, ixesha elifutshane lokucubungula, akukho mfuneko yezixhobo ezikhethekileyo okanye ezibizayo;

I-Reaction I-Bonded parts engenakuncipha okanye utshintsho kubungakanani;

Iindlela ezahlukeneyo zokubumba (ukukhupha, ukujova, ukucinezela kunye nokuthulula).

Kukho iindlela ezininzi zokubumba. Ngexesha lokusila, iimveliso ezinkulu nezintsonkothileyo zinokuveliswa ngaphandle kokuxinzelelwa. Itekhnoloji ye-Reaction Bonded ye-silicon carbide ifundwe kangangesiqingatha senkulungwane. Le teknoloji ibe yenye yezona zinto ziphambili kumashishini ahlukeneyo ngenxa yeenzuzo zayo ezikhethekileyo.