Composite Electrodeposition of Ni-W-Al_2O_3 Foam Alloy

Ni-W-Al2O3 foam alloy was prepared using composite electrodeposition technology.The correlation among morphology and bath composition plus Al content in the alloy was explored.The tensile strength,corrosion resistance and high-temperature antioxidation ability of the alloy were investigated.It was found that the framework of the alloy was smooth,and Al content in the alloy increased with increasing concentration of Al2O3 in plating bath.The tensile strength of the foam alloy decreased slowly with increasing Al content,and sharply decreased when the Al content exceeded 6.50%.Besides,Ni-W-Al2O3 foam alloy had better corrosion resistance and high-temperature antioxidation ability than Ni-W foam alloy,and Ni-W-Al2O3 foam alloy containing 5.05%Al possessed the best salt-spray corrosion resistance and high-temperature antioxidation ability.