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Tantalum-10 tungsten alloy is known for its high melting point, high density, high tensile strength, and good low temperature plasticity, ductility, weldability and corrosion resistance. The melting point of this alloy is up to about 3150 degrees Celsius, and it can maintain stable performance even in extreme high temperature environments, which is very suitable for high temperature and high pressure working environments such as aerospace and nuclear industry. At the same time, Ta10W alloy also has good corrosion resistance, can maintain a low dissolution rate in a variety of corrosive media, thus extending the service life.
However, tantalum 10 tungsten alloy also has some shortcomings, especially in terms of high temperature oxidation resistance. When the temperature reaches 500℃, the alloy may appear “pest” oxidation phenomenon, and the higher the temperature, the more intense the oxidation until the complete pulverization damage. In order to improve its high temperature oxidation resistance, two methods of alloying protection and surface coating protection are mainly used. The alloying method adds specific elements to improve the oxidation resistance of the alloy, while the surface coating method adds heat-resistant alloy coating, aluminide coating, silicide coating or precious metal coating on the surface of the alloy to isolate oxygen contact under high temperature environment and protect the alloy matrix from corrosion.