Ukukhetha iGraphite Crucible efanelekileyo yokukhula kweCrystal: Isikhokelo esiSebenzayo

Kwihlabathi leukukhula kwekristale—nokuba zezeSiC, iGaN, isafire, okanye ezinye izinto eziphambili—i-graphite crucible ayisiyonto nje kuphela. Yindawo yokuthintela ubushushu, i-interface yokusabela, kunye nomlindi wesango ukuze kubekho ubumsulwa. Ukukhetha i-crucible efanelekileyo kunokuchaphazela kakhulu isivuno, umgangatho wekristale, kunye nozinzo lwesithando.

Esi sikhokelo sinceda iinjineli zeenkqubo, amaqela e-R&D, kunye nabaphathi bokuthenga ukuba baqonde izinto ezibalulekileyo xa bekhetha izixhobo ze-graphite zokukhula kwekristale kubushushu obuphezulu.

Kutheni iiGraphite Crucibles ziyiMigangatho yoShishino

I-Graphite isetyenziswa kakhulu ekukhuleni kwekristale ngenxa yezi zinto zilandelayo:

• Ukuqhuba okuphezulu kobushushu kunye nokusasazwa kobushushu okufanayo

• Ukumelana kakuhle noxinzelelo lobushushu, ingakumbi xa kushushu kakhulu

• Ukwenziwa ngokwezifiso kwejometri ezintsonkothileyo kunye nokuhlanganiswa neenkqubo ezigqunyiweyo (umz., iingubo zeSiC okanye zeTaC)

• Ixabiso eliphantsi kakhulu xa lithelekiswa neeseramikhi zesinyithi okanye ii-alloys ezichaseneyo

Kodwa ayigqibelelanga. I-Graphite inokusabela kwiigesi ezingqongileyo, i-sublimate kumaqondo obushushu aphezulu, kwaye ikhuphe ukungcola ukuba ayicocwanga okanye ayigqunywanga kakuhle.(1)

Izinto Ezibalulekileyo Omele Uziqwalasele Xa Ukhetha Isixhobo Sokugquma

1. Ubushushu kunye noZinzo

• Igrafayithi eqhelekileyo inokumelana ukuya kuthi ga kwi-~2000°C, kodwa ukuze i-SiC (>2200°C) ikhule nge-sublimation, izinto ezigqunyiweyo (umz., i-TaC, i-SiC) zibalulekile.
• Kwimijikelo yokukhula emide, ukuzinza okulinganayo kunye nokumelana nokurhubuluza kubalulekile.

2. Ukuhambelana kwezinto

• Ingaba le nkqubo ibandakanya i-Si, i-C, ii-halogens, okanye i-hydrogen? Nganye inokuhlasela i-graphite ngendlela eyahlukileyo.
• Iinkqubo ezisekelwe kwi-Si zihlala zizuza kwiingubo ze-SiC ukuthintela ungcoliseko kunye nokugqwala.

3. Ulawulo lobuNgcambulo kunye noNgcoliseko

• I-graphite ecocekileyo kakhulu (>99.99%) iyimfuneko kwizixhobo ze-elektroniki ezinamandla kunye ne-semiconductor substrates.
• Cinga ngezinto ezigqunyiweyo xa ukufuduka kwezinto (umz., B, Al, Fe) kunokonakalisa umgangatho wekristale.

4. Uhlobo lokugquma

• Ukwaleka kweSiC: Kuqhelekile ekukhuleni kwekristale yeSiC; ukuhambelana kakuhle nobushushu, akusebenzi kakuhle ngokweekhemikhali
• Ukwaleka kweTaC: Kumaqondo obushushu aphezulu kakhulu; kunika umqobo ongcono wokugqwala kunye nokusasazwa
• Iingubo zeHybrid: Izisombululo ezenziwe ngokwezifiso zeempendulo ezithile zesigaba segesi

5. Iprofayili yoThermal kunye noHlanganiso lweSithando somlilo

• I-geometry yeCrucible ichaphazela ukufana kobushushu kunye nozinzo lwendawo yokukhula.
• Lungiselela uyilo lwe-crucible olusekelwe kwi-hot zone simulation kunye ne-CFD modeling.

Iingxaki Eziqhelekileyo Okufanele Ziphetshwe

• Ukusebenzisa i-graphite engagqunywanga kwiindawo ezishushu: Ukonakala ngokukhawuleza, ungcoliseko, kunye nokungaphindi kwakhona.

• Ukungaqikeleli ubukhulu okanye ukufana kwengubo: Iingubo ezibhityileyo okanye ezingaguquguqukiyo zikhokelela ekusileleni kwangethuba.

• Ukungayinaki into yokwanda kobushushu: Ukuqhekeka okanye ukuqhekeka kwimijikelo emide ngenxa yokungalingani kwengubo/isiseko.

Iingcebiso Zokugcina Nokuphila

• Bhaka ii-crucibles kwangaphambili ngaphambi kokuba uzisebenzise okokuqala ukuze unciphise ukuphuma kwegesi.

• Hlola rhoqo ukuthembeka kokugquma emva kokubaleka ngakunye, ingakumbi imiphetho kunye neekona.

• Landelela inani lemijikelo enokutyibilika kunye nephethini yokuwohloka—ayisiyiyo yonke impazamo ebonakalayo ngaphandle.

Iingcebiso Ezithile Kwisicelo