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耐磨石墨棒有什么特点?

发布时间:2021-09-07 13:52:12 浏览:152次

石墨棒常见于高温真空炉的电加热体,应用温度可达3000℃,在高溫下便于空气氧化,除真空泵外,只有在中性化氛围或氧化性氛围中应用。它的线膨胀系数较小,导热系数很大,电阻器指数为(8~13)×10-6Ω·m,工艺性能较SiC、MoSi2棒好,耐热,耐极冷极性热好,价钱较划算。

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