Waa maxay dahaarka uumiga iska caabinta?

Dahaarka isha uumiga iska caabinta waa habka dahaarka uumiga ee aasaasiga ah."Imibax" waxaa loola jeedaa habka diyaarinta filim khafiif ah kaas oo alaabta daahan ee qolka faakuumka la kululeeyo oo la uumi baxo, si ay atomamka ama molecules-ku u soo baxaan oo ay uga baxsadaan dusha sare, samaynta ifafaale qulqulka uumiga, dhacdo dusha sare ee substrate ama substrate, oo ugu dambeyntii la isku ururiyo si loo sameeyo filim adag.

Waxa loogu yeero habka daahan uumi uumi iska caabin ah waa in la isticmaalo tantalum, molybdenum, tungsten iyo biraha kale dhibic dhalaalaysa sare si ay u sameeyaan qaab ku habboon isha uumiga, kaas oo lagu raran yahay alaabta si loo uumi, ha hawada dhex socoto, si toos ah kulayl iyo uumibaxa alaabta la uumibixiyey, ama ku rid alaabta lagu daadinayo alumina, beryllium oxide iyo qolof kale oo si dadban u kululaynta iyo uumiga.Tani waa habka uumiga kululaynta iska caabinta.

TheMashiinka daahan uumiga uumigakululaynta iyo uumi-baxa kuleyliyaha iska caabinta ayaa leh faa'iidooyinka qaab dhismeedka fudud, kharash yar iyo isticmaalka la isku halayn karo.Waxaa loo isticmaali karaa dahaarka uumiga ee alaabta leh barta dhalaalka hoose, gaar ahaan wax soo saarka ballaaran oo leh shuruudaha hoose ee tayada daahan.Ilaa hadda, waxaa weli jira tiro badan oo hababka daahan ee kululaynta iska caabin ah iyo uumi la geliyey isticmaalka ee wax soo saarka ee muraayadaha aluminium.

Khasaarooyinka iska caabbinta habka dahaarka uumiga uumiga ayaa ah in heerkulka ugu badan ee lagu gaari karo kuleylka uu xaddidan yahay, iyo nolosha adeegga kuleyliyaha sidoo kale waa gaaban yahay.Sanadihii la soo dhaafay, si loo hagaajiyo nolosha isha uumiga iska caabbinta, warshadda qalabku waxay qaadatay maadada dhoobada ah ee lagu farsameeyo boron nitride oo leh nolol dheer oo ah isha uumiga.Sida laga soo xigtay warbixinta patent-ka Japan, waxay isticmaali kartaa walxo ka kooban 20% ~ 30% boron nitride iyo walxaha refractory kuwaas oo lagu qasi karo iyada si ay u sameeyaan isha uumiga (crucible), oo ku dabool dusha sare ee lakabka zirconium oo ka kooban 62% ~ 82%, inta soo hartayna waa agabka daawaha ee zirconium-silicon.