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- 介绍: 块状为黑色甲壳状不规则块体。粉体为红褐色粉末。温度高于 700 ℃时 易氧化, 700 ℃ 以下温度性质稳定,不和除 HF 外的任何酸反应,不溶于碱和水。溶于稀氢氟酸和硝酸的混酸。
- 熔点: >1702°C
- 沸点: 1880°C
- 储存条件: 严禁潮湿和高温地点存放。
- 用途: 作为精细陶瓷原料具有重要价值。也可在真空中将其蒸发,涂在光学仪器用的金属反射镜上作保护膜。还可用于制造半导体材料。也用于光学玻璃。
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