Kusarudza Girafu Yakakodzera Yekukura Kwemakristaro: Gwaro Rinoshanda

Munyika yekukura kwekristaro—ingava yeSiC, GaN, safira, kana zvimwe zvinhu zvepamusoro—girafiti inonamirwa haisi mudziyo chete. Inzvimbo inochengetedza kupisa, nzira yekubatanidza, uye muchengeti wegedhi kuti pave nekuchena. Kusarudza girafiti yakakodzera kunogona kukanganisa zvikuru goho, kunaka kwekristaro, uye kugadzikana kwechoto.

Gwaro iri rinobatsira mainjiniya ekugadzira zvinhu, mapoka eR&D, uye maneja ekutenga kuti vanzwisise zvinhu zvakakosha pakusarudza ma crucible e graphite ekukura kwekristaro pakupisa kwakanyanya.

Nei Graphite Crucibles Ive Iyo Inoshandiswa Muindasitiri

Graphite inoshandiswa zvakanyanya mukukura kwemakristaro nekuda kwezvikonzero zvinotevera:

• Kupisa kwakanyanya uye kugoverwa kwekupisa kwakafanana

• Kuramba kwakanaka kwazvo kurwiswa nekupisa, kunyanya kana tembiricha yakakwira ichikwira

• Kugadziriswa kwejometri dzakaoma uye kubatanidzwa nemasisitimu akafukidzwa (semuenzaniso, SiC kana TaC coatings)

• Mutengo wakaderera zvichienzaniswa nesimbi dzesimbi kana masimbi anodzivirira

Asi hazvina kukwana. Graphite inogona kuita zvinoenderana nemagasi ari munzvimbo, kuita kuti mvura igare pasi pemvura kana tembiricha yakakwira, uye kuburitsa tsvina kana isina kucheneswa kana kuputirwa zvakanaka. (1)

Zvinhu Zvikuru Zvokufunga nezvazvo Pakusarudza Crucible

1. Tembiricha Range & Kugadzikana

• Graphite yakajairika inogona kubata kusvika ~2000°C, asi kuti SiC (>2200°C) ikure pasi pemvura, zvinhu zvinoputirwa (semuenzaniso, TaC, SiC) zvakakosha.
• Kuti ikure kwenguva refu, kugadzikana kwechimiro uye kuramba kukwira kwakakosha.

2. Kuenderana kwezvinhu

• Maitiro acho anosanganisira Si, C, halogens, kana hydrogen here? Imwe neimwe inogona kurwisa graphite zvakasiyana.
• Maitiro akavakirwa paSi anowanzo batsirwa neSiC coating kudzivirira kusvibiswa uye ngura.

3. Kudzora Kuchena & Kusvibiswa

• Graphite ine kuchena kwakanyanya (>99.99%) inofanirwa kushandiswa pakugadzira magetsi nemidziyo yemagetsi ine simba.
• Funga nezvezvipfukuto zvakaputirwa kana kufamba kwezvinhu (semuenzaniso, B, Al, Fe) kuchigona kuderedza kunaka kwekristaro.

4. Rudzi rwekuputira

• SiC Coating: Yakajairika pakukura kwekristaro yeSiC; inoenderana zvakanaka nekupisa, ine makemikari asina simba
• Kuputira TaC: Kune tembiricha yakakwira zvakanyanya; inopa ngura iri nani uye chinodzivirira kupararira
• Mapeti eHybrid: Mhinduro dzakagadzirwa nezvikamu zvakasiyana-siyana dzekuita kwegasi-chikamu

5. Kubatanidzwa kweThermal Profile & Furnace

• Maitiro eCrucible anokanganisa kufanana kwetembiricha uye kugadzikana kwenzvimbo yekukura.
• Gadzirisa dhizaini ye crucible zvichibva pakushandisa hot zone simulation uye CFD modeling.

Dambudziko Dzakajairika Dzekudzivirira

• Kushandisa graphite isina kuputirwa munzvimbo dzine hukasha: Kukurumidza kuora, kusvibiswa, uye kusadzokororwa zvakanaka.

• Kuderedza ukobvu hwekufukidza kana kufanana: Kupfeka kwakatetepa kana kusina kurongeka kunoita kuti pasashande zvakanaka nguva isati yakwana.

• Kuregeredza kusawirirana kwekuwedzera kwekupisa: Kutsemuka kana kupatsanurwa kwenguva refu nekuda kwekusawirirana kwe coating/base.

Mazano ekugadzirisa & Kureba Kwehupenyu

• Bikai zvirongo zvemoto musati mazvishandisa kekutanga kuti muderedze kupisa kwemhepo.

• Gara uchiongorora kusimba kwejira mushure mekushandisa pendi imwe neimwe, kunyanya mipendero nemakona.

• Tevedzera huwandu hwemapombi emvura anoputika uye maitiro ekuora kwemvura—hazvisi zvese zvinokundikana zvinoonekwa kunze.

Mazano Akanangana Nekushandiswa