Molybdenum tungsten alloy
Molybdenum base alloys containing 25% and 30% tungsten, with excellent corrosion resistance of molten zinc, can be used to make molten zinc pump and electrolytic zinc electrode and filter molten zinc.
The melting point of molybdenum-tungsten alloy increases with the increase of tungsten content. When the tungsten content increases to 25%, the melting point of Mo-W alloy increases about 200℃ compared with that of pure molybdenum. Therefore, the alloy composition can be selected in the range of 2620~3410℃ according to the operating temperature and the required melting point of the alloy. This advantage is also one of the advantages of molybdenum-tungsten alloy to be widely used. Relationship between tungsten content and melting point of molybdenum tungsten alloy.
Lattice constant The lattice constant and density of mo-W alloys increase linearly with the increase of tungsten content. The hardness and strength of mo-W alloy increase with the increase of tungsten content. The maximum room temperature hardness of the alloy is between 90% and 100% of tungsten, and its vickers hardness is up to 3530~3860MPa, which is more than twice as high as pure molybdenum. The highest high temperature hardness of the alloy is between 70%~85% tungsten content.
