Light-impermeable, high purity silicon carbide material, a light

Details Light-impermeable, high purity silicon carbide material, a light Light-impermeable, high purity silicon carbide material, a light

1999-10-05

2000-11-14

Jones, Deborah

Compositions: ceramic

Ceramic compositions

Carbide or oxycarbide containing

C04B 3552

Patent

active

061470201

ABSTRACT:
A light-impermeable, high purity silicon carbide material including polycrystals of silicon carbide as a main ingredient, wherein the silicon carbide material has a porosity of not more than 0.1%, the content of each of metal elements contained in the silicon carbide material is not more than 200 ppb, a weight ratio of silicon relative to the entire weight of the silicon carbide material is 69.00 to 69.90 wt %, and a light transmittance of the silicon carbide material in a wavelength range of 0.4 to 25 .mu.m is not more than 0.05% per a thickness of 0.5 mm.

REFERENCES:
patent: 5937316 (1999-08-01), Inaba et al.

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