| 摘要 |
PURPOSE:To form a coated layer having the impact strength resistance, the wear resistance and the corrosion resistance on the surface of a metallic or ceramic base material by applying a hot-hydrostatic compression method on a sprayed coated layer which is formed on the surface of the metallic or ceramic base metal to make it dense and vanishing a pore. CONSTITUTION:The surface of a metallic base material such as e.g. mild steel, stainless steel or a ceramic base material consisting of a sintered body such as Al2O3, SiC is blast-treated by an alumina grid. A sprayed coated film is formed by thermally-plasma spraying the powder such as Ni on the surface of the blast-treated base material in the nonoxidizing atmosphere such as Ar. Thereafter a hot-hydrostatic compression method (HIP treatment) is applied on the above-mentioned sprayed coated layer to make it dense. As a result, a pore interposed in the inside part of the coated layer is removed and it is made dense and the mechanical strength characteristic such as the wear resistance, the corrosion resistance, the impact resistance and the peel resistance is given on the surface. |
