| 摘要 |
PROBLEM TO BE SOLVED: To provide a new Cr-free high hardness corrosion resistant material which is formed into a high density ( a density ratio of≥90%) using Fe-Ti alloy powder and has improved corrosion resistance as a result. SOLUTION: When raw material powder is packed into a mold cavity with a desired shape in a mold, and pressurizing and heating are simultaneously performed, as the raw material powder, a powdery mixture obtained by adding soft metal powder of 5 to 20 vol.% to Fe-Ti alloy powder containing 30 to 80 mass% Ti, and the balance Fe with inevitable impurities, and mixing them is used, heating temperature in the pressurizing-sintering step is controlled to 900 to 1,300°C, and further, pressure is controlled to 150 to 250 MPa. COPYRIGHT: (C)2006,JPO&NCIPI
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