High vacuum in-situ two-step refining process for high purity material



The high vacuum in-situ two-step refining process for high purity material features that under high vacuum condition, one diffusion furnace with two independent heating wires is used in heating the upper part and lower part of the crucible separately so as to form different temperature distribution inside the crucible in different stages, and the crucible is heated in two steps so as to eliminate high saturated vapor pressure impurities and low saturated vapor pressure impurities separately and to obtain high purity material ultimately. The refining process has greatly reduced contamination of atmosphere on the material, high product quality, great production capacity, stable performance, no environmental pollution and other features, and is suitable for producing high purity material, especially producing high purity material with high activity.




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Cited By (10)

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