Nickel Silicon Titanium - Tungsten Carbide Composite Coating Material Preparation Methods

The present invention provides a silicon laser cladding nickel titanium - tungsten carbide composite coating material preparation methods, and its purpose is to be prepared by laser cladding Ni3 (Si, Ti) intermetallic compounds in the Ni-base superalloy substrate, Ni-based solid solution , ceramic composite coating composition of TiC-coated WC; coating material mainly containing Ni, Si, Ti, and four WC powders, in weight percent: WC 8% to 20%, the balance being Ni78Si13Ti9;

The preparation method of using the laser cladding process parameters:

Output power 1200-1500W, scanning speed 4-8mm / s, spot diameter 4mm, protective cladding when gas is Ar gas, clad base material is a nickel-base superalloy, the steps are: the above ratio, the coating material mixing, thermal spray coating or pre-nickel-based superalloy substrate surface 0.8 ~ 1.0mm; multi-pass scanning laser cladding, each lap 1.8mm, available in different thickness of the cladding layer.


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