Isikhokelo soKhetho lweGraphite eQokelweyo yeTaC

Kwizixhobo zokukhula kwekristale ezishushu kakhulu kunye ne-epitaxy/deposition, isixhobo sokuqhekeza igrafiti sidlala iindima ezintathu ngaxeshanye: umda wobushushu, ujongano lokuphendula, kunye nomthombo wongcoliseko olunokwenzeka. / isithintelo songcoliseko. Yiyo loo ntoIzixhobo zokuqhekeza igrafayithi ezigqunywe yiTaCziya zixhaphaka ngakumbi—umaleko weTaC unika amandla aphezulu obushushu, ukumelana nokugqwala okunamandla, kunye nokunciphisa ngcono ukufuduka kokungcola, ukugcina iingenelo zegrafiti ngelixa kunciphisa ubuthathaka bayo.

1) Zeziphi iingxaki ezinokusonjululwa yiTaC Coating?

A. Ukumelana nokugqwala
Ukuthatha ukukhula kweSiC kunye neenkqubo ezinxulumene ne-epitaxy njengomzekelo, iintlobo ezine-silicon kubushushu obuphezulu—kunye ne-hydrogen kunye neekhemikhali ze-halogen ezinokubakho—zinokukhokelela ekuboleni okuqhubekayo kunye nokonakala kokusebenza kwezixhobo ze-graphite. Iingxelo zoshishino zikwaphawula ukuba kwiindawo ezixineneyo ze-silicon, ezirhabaxa ezingaphezulu kwe-2000°C, izinto ezirhabaxa ze-graphite zinokonakala kakhulu emva kwemijikelo embalwa kuphela, ngelixa izinto ezifana ne-TaC zinokuphucula kakhulu ukuqina.

B. Iinxalenye Ezincitshisiweyo kunye Nokufuduka Kwekhabhoni
Xa amasuntswana egrafiti okanye ukufuduka kwekhabhoni kungena kwindawo yokukhula okanye kwindawo yokubeka izinto, anokubonakala ngokuthe ngqo njengeziphene, izinto ezibandakanyiweyo, uxinano oluphezulu lokusasazeka kwezinto, kwaye anokubangela ungcoliseko olungenakuguqulwa lwegumbi. Njengomaleko womqobo, injongo yeTaC kukwenza uzinzo lobushushu kunye nokungangeni kobuso kulawuleke ngakumbi. Izifundo eziqhubekayo zikwabika ukuba ii-TaC coatings zinceda ekuthinteleni ukubola kwegrafiti/ukonakala kwesakhiwo kunye nokuphucula uzinzo lobushushu kwiindawo zokukhula kwekristale. ②

C. Ifestile yeNkqubo eBanzi
Abantu abaninzi bajonga izinto ezityiwayo njengezinto ezisetyenziswayo, kodwa ngokwenene zisebenza njengezinto"iijenereyitha zemeko yomda.Xa umphezulu oqhekekayo uhlala uzinzile, intsimi yobushushu kunye neempendulo zesigaba segesi ziyaphindaphindeka ngakumbi. Xa ukunamathela kwengubo kungonelanga—okukhokelela kwiimfanta ezincinci okanye ukungena kwendawo—ukuhamba kwenkqubo kudla ngokuqala apho. Uphando oluzinikeleyo malunga namandla okubopha phakathi kwengubo kunye negrafiti sele luthethe ngayo njengenguqu ebalulekileyo echaphazela ukusebenza kokukhula kwekristale enye.

2) Yeyiphi Eyona Ifanelekileyo?

• Imozulu enobushushu obuphezulu kakhulu, enokutsha kakhulu

• Amanyathelo okukhula/okukhupha amanzi anovakalelo olukhulu kwiisuntswana kunye nokungcola kwesinyithi

• Imigca yemveliso ephezulu efuna ubomi obude kunye nokuhambelana okuqinileyo

3) Indlela yokukhetha i-TaC Coated Graphite Crucible

Ukugquma i-TaC akuyondlela enye yenkqubo "ehambelana nobukhulu obunye". Ngokusebenzisa i-CVD njengomzekelo, uncwadi lubonelele ngengxoxo ecwangcisiweyo malunga nokubekwa kwe-CVD kunye nokuchazwa kokusebenza kwe-TaC/SiC kwi-grafiti substrates.

Iindlela ezahlukeneyo zikhokelela kwiziphumo ezahlukeneyo:

• Ubuninzi kunye nokuvuleka kwamanzi:Okukhona i-coating ixinene, kokukhona ithintela ukugqwala okucothayo kokungena kwegesi/umphunga.

• Ubukhulu kunye noxinzelelo:njengoko ubukhulu busanda, uxinzelelo lobushushu kunye nomngcipheko wokuqhekeka nazo ziyanda, nto leyo efuna ulawulo olungcono lwenkqubo.

• Ukulungiswa kunye nokuhambelana:Ukuveliswa kobuninzi kuxhomekeke kukuhambelana kwebhetshi ukuya kwibhetshi kunye nokuba ukuphinda usetyenzwe/ukuphinda ucocwe kungenziwa ngokuthembekileyo na.

4）Iikhrayitheriya zoHlolo oluNgenayo oluPhambili

• Inkangeleko kunye nemeko yomphezulu:imingxuma yemingxuma, imingxuma, ubume "besikali/intlanzi", ukutshintsha kombala/ukuba ngwevu kwindawo ethile

• Ubukhulu kunye nokufana:imiphetho, iikona, kunye nasezantsi zezona ndawo zinokuba zincinci

• Amandla ebhondi / ukumelana noxinzelelo lobushushu:iindlela zovavanyo ezicacileyo kunye neendlela zokulahla/zokwala kufuneka zichazwe

• Ii-Microcracks kunye ne-porosity:(zidweliswe kunye nezi zingentla ngokusebenzayo)

• Ulawulo longcoliseko:ukungcola kwesinyithi, iintsalela ze-halogen, kunye nenqanaba lokucoceka kwamasuntswana kufuneka konke kulandelelwe