Ekukhiqizweni kwe-Si ne-FeSi, umthombo oyinhloko we-Si yi-SiO2, ngendlela ye-quartz.Ukusabela nge-SiO2 kukhiqiza igesi ye-SiO ephinde iphendule nge-SiC ukuya ku-Si.Ngesikhathi sokushisisa, i-quartz izoguqulela kwezinye izinguquko ze-SiO2 nge-cristobalite njengesigaba esizinzile sezinga lokushisa eliphezulu.Ukuguqulela ku-cristobalite kuyinqubo ehamba kancane.Izinga layo liye laphenywa emithonjeni embalwa ye-quartz yezimboni futhi kuboniswe ukuthi liyahluka kakhulu phakathi kwezinhlobo ezihlukene ze-quartz.Okunye okuhlukile ekuziphatheni ngesikhathi sokushisa phakathi kwale mithombo ye-quartz, njengokuthambisa izinga lokushisa nokunwetshwa kwevolumu, nakho kuye kwafundwa.Isilinganiso se-quartz-cristobalite sizothinta izinga lokusabela elibandakanya i-SiO2.Imiphumela yezimboni neminye imithelela yomehluko oboniwe phakathi kwezinhlobo ze-quartz kuyaxoxwa ngayo.Emsebenzini wamanje, indlela entsha yokuhlola yenziwe, futhi uphenyo lwemithombo emisha embalwa ye-quartz luqinisekise umehluko omkhulu obonwe ngaphambili phakathi kwemithombo ehlukene.Ukuphindaphinda kwedatha kuhlolisisiwe futhi umphumela womoya wegesi uyaphenywa.Imiphumela evela emsebenzini wangaphambili ifakiwe njengesisekelo sengxoxo.
I-quartz ehlanganisiwe inezinto ezinhle kakhulu ezishisayo namakhemikhali njengezinto ezibonakalayo zokukhula kwekristalu eyodwa ukusuka ekuncibilikeni, futhi ukuhlanzeka kwayo okuphezulu nezindleko eziphansi kuyenza ihehe ikakhulukazi ekukhuleni kwamakristalu ahlanzekile kakhulu.Kodwa-ke, ekukhuleni kwezinhlobo ezithile zamakristalu, ungqimba lwe-pyrolytic carbon coating luyadingeka phakathi kokuncibilika kanye ne-quartz crucible.Kulesi sihloko, sichaza indlela yokusebenzisa i-pyrolytic carbon coating ngokuthuthwa kwe-vacuum vapor.Le ndlela iboniswa ukuthi iyasebenza ekunikezeni ukunamathela okufanayo kububanzi obuhlukahlukene bosayizi nokuma.Umphumela we-pyrolytic carbon coating ubonakala ngezilinganiso zokunciphisa amehlo.Enqubweni ngayinye yokumboza, ubukhulu bokunamathela buboniswa busondela kunani lokugcina elinomsila ovelayo njengoba ubude be-pyrolysis bukhula, futhi ukushuba okumaphakathi cishe kukhuphuka ngokuhambisana nenani levolumu ye-hexane vapor etholakalayo endaweni ye-pyrolytic. enamathela.Amakristalu e-quartz ahlanganiswe yile nqubo asetshenziselwe ukukhula ngempumelelo aze afike ku-2-in-diameter we-Nal single crystals, futhi izinga eliphezulu le-Nal crystal litholakale lithuthuka njengoba ukushuba kwe-coating kukhuphuka.
Isikhathi sokuthumela: Aug-29-2023