Method for Preparing Tungsten Single Crystal

The invention provides a method for preparing a tungsten single crystal.

An electrochemical method is utilized to prepare the tungsten single crystal in a fused salt. The method takes fused Na2WO4 and WO3 as a fused salt medium and, takes a high-purity polycrystal tungsten plate as a counter electrode and taking common metal such as copper and steel, or nonmetal such as graphite as a substrate for growing the single crystal as well as a working electrode, and comprises the following steps of: applying a current under an air atmosphere at 700-1000 DEG C; and adjusting the current and the electroplating time, thereby obtaining the tungsten single crystal.

The method provided by the invention has the advantages of simple technological method, simple equipment demand, convenience in operation, low cost, and easiness in control of synthesizing conditions.


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