Ukulungiswa kunye neepropathi ze-silicon carbide ceramics ngokuphendula sintering

I-Silicon carbide (i-SiC) yikhompawundi edibeneyo eyenziwe ngekhabhoni kunye ne-silicon kwaye yaziwa ngeempawu zayo ezibalaseleyo, kubandakanya ukumelana nokunxiba okuphezulu, ukuxhathisa ukothuka kwe-thermal, ukuxhathisa okuqinileyo kwe-corrosion kunye ne-thermal conductivity ephezulu. Ezi zakhiwo zenza i-silicon carbide ibe yimathiriyeli efanelekileyo kwiintlobo ezahlukeneyo zezicelo kumashishini amaninzi, kubandakanya i-aerospace, ukuveliswa koomatshini, iikhemikhali zepetroli, ukunyibilika kwesinyithi kunye ne-elektroniki. Ngokukodwa ngokufanelekileyo ukuveliswa kweendawo ezinqabileyo zokunxiba kunye neendawo eziphezulu zokushisa. Uphuhliso lwe-reaction-sintered silicon carbide ceramics ludlale indima ephambili ekuqhubeleni phambili usetyenziso lwemizi-mveliso yale mathiriyeli iguquguqukayo.

Indlela yemveli yokuvelisareaction-sintered silicon carbide ceramicskukusebenzisa isilicon carbide powder kudityaniswe nentwana yomgubo wecarbon. Umxube ufumana ubushushu obuphezulu be-siliconization ukwenza i-ceramic material eshinyeneyo. Nangona kunjalo, obu bugcisa bemveli abukho ngaphandle kweengxaki zabo. Inkqubo ye-sintering ibonakala ngexesha elide, ukushisa okuphezulu kunye nokusetyenziswa kwamandla aphezulu, okubangelwa iindleko eziphezulu zokuvelisa. Njengoko iimfuno zeshishini le-silicon carbide iimilo ze-ceramic kunye neefom zisiya zisiba nzima ngakumbi, imida yeendlela zemveli iya ibonakala ngakumbi.

Kwiminyaka yakutshanje, ukuqaliswa kwe-silicon carbide nanopowders ibe sisisombululo esithembisayo sokuphucula iimpawu zemishini ye-silicon carbide ceramics. Ukusebenzisa i-nanopowders kunokuvelisa i-ceramics ezinoxinano oluphezulu kunye namandla aphezulu okuguquguquka. Nangona kunjalo, ixabiso le-silicon carbide nanopowder liphezulu kakhulu, lihlala lingaphezulu kwe-10,000 ye-yuan ngetoni nganye, nto leyo ibeka umqobo omkhulu wokwamkelwa ngokubanzi kunye nemveliso enkulu. Lo mngeni wezoqoqosho ufuna ukuphononongwa kwezinye izinto ezisetyenziswayo kunye neendlela zokwenza ukuveliswa kwe-silicon carbide ceramics kube yinto enokwenzeka kwaye ingabizi kakhulu.

Ukongeza, ukukwazi ukuvelisa iimilo ezintsonkothileyo kunye neenxalenye ezinkulu zivula iindlela ezintsha ze-silicon carbide ceramic application. Amashishini afuna uyilo oluntsonkothileyo kunye nezixhobo zokusebenza eziphezulu zinokuzuza kule ndlela yokulungiselela entsha. Uyilo oluguquguqukayo kunye nobuninzi bemveliso ye-silicon carbide ceramics ekumgangatho ophezulu inokukhokelela kwinkqubela phambili enkulu kwimimandla efana ne-aerospace kunye ne-elektroniki apho ukusebenza kwezinto kubalulekile.