7N Tellurium Crystal Kukura uye Kucheneswa Maitiro Details neTechnical Parameters

Iyo 7N tellurium yekuchenesa maitiro inosanganisa nzvimbo yekunatsa uye inotungamira crystallization tekinoroji. Makiyi maitiro ekuita uye ma parameter akatsanangurwa pazasi:

1. Zone Refining process
Equipment Design

Multi-layer annular zone mabhoti ekunyungudutsa: Diameter 300-500 mm, kureba 50-80 mm, yakagadzirwa nepamusoro-kuchena quartz kana graphite.
Heating system: Semi-circular resistive coils ine tembiricha yekudzora kurongeka kwe ± 0.5°C uye tembiricha yepamusoro ye850°C.
Key Parameters

Vacuum: ≤1 × 10⁻³ Pa yose kudzivirira oxidation uye kusvibiswa.
Zone yekufamba kumhanya: 2-5 mm/h (unidirectional kutenderera kuburikidza nedhiraivha shaft).
Tembiricha gradient: 725±5°C panzvimbo yakanyungudutswa kumberi, kuchitonhora kusvika <500°C pamucheto wekutevera.
Kupfuura: 10-15 cycles; kubvisa kushanda> 99.9% kune tsvina ine segregation coefficients <0.1 (eg, Cu, Pb).
2. Directional Crystallization process
Melt Kugadzirira

Material: 5N tellurium yakacheneswa kuburikidza nekunatsa nzvimbo.
Mamiriro ekunyunguduka: Yakanyungudutswa pasi peinert Ar gasi (≥99.999% kuchena) pa500-520°C uchishandisa yakakwira-frequency induction heat.
Kudzivirirwa kweMelt: Yakakwirira-kuchena graphite chivharo kudzvinyirira volatilization; kudzika kwedziva kwakanyungudutswa kwakachengetwa pa80–120 mm.
Crystallization Control

Kukura: 1–3 mm/h ine tembiricha yakatwasuka ye30–50°C/cm.
Kutonhodza sisitimu: Mvura-yakatonhodzwa mhangura base yekumanikidzira kutonhora pasi; kutonhora kweradiative kumusoro.
Kusachena kwekusarura: Fe, Ni, uye kumwe kusvibiswa kunopfumiswa pamiganhu yezviyo mushure me 3-5 remelting cycles, kuderedza kuwanda kune ppb mazinga.
3. Quality Control Metrics
Parameter Standard Value Reference
Kuchena kwekupedzisira ≥99.99999% (7N)
Yese tsvina yesimbi ≤0.1 ppm
Okisijeni yemukati ≤5 ppm
Kutsauswa kweCrystal orientation ≤2°
Resistivity (300 K) 0.1–0.3 Ω·cm
Process Advantages
Scalability: Multi-layer annular zone kunyunguduka mabhoti anowedzera batch huwandu ne3-5 × zvichienzaniswa neyakajairwa dhizaini.
Kunyatsoita: Chaiyo vacuum uye kudzora kupisa kunogonesa yakakwirira kusvibiswa kubviswa mitengo.
Crystal mhando: Ultra-inononoka kukura mitengo (<3 mm/h) inova nechokwadi chakaderera dislocation density uye imwechete-crystal kutendeseka.
Iyi yakanatswa 7N tellurium yakakosha kune zvemberi zvikumbiro, zvinosanganisira infrared detectors, CdTe nhete-firimu solar masero, uye semiconductor substrates.

References:
ratidza data rekuedza kubva kune vezera-vakaongororwa zvidzidzo patellurium kucheneswa.