| 摘要 |
<p>A sintered titanium alloy is composed of a titanium matrix or titanium alloy matrix and hard particles dispersed in the matrix, the sintered titanium alloy comprises: 4-8 mass% of aluminum (Al); 2-6 mass% of vanadium (V); 0.15-0.8 mass% of oxygen (O); at least one element selected from the group consisting of 0.2-9 mass% of boron (B), 0.5-3 mass% of at least one of molybdenum (Mo), tungsten (W), tantalum (Ta), zirconium (Zr), niobium (Nb), and hafnium (Hf), 0.05-2 mass% of at least one of Ia Group elements, IIa Group elements, and IIIa Group elements, 0.05-0.5 mass% of at least one of halogens; with the balance being titanium (Ti) and inevitable impurities. A method for economically producing a high-density sintered titanium alloy comprises mixing a raw material powder composed of a titanium powder and a powder for solid-solution hardening, rubbing and pressing the titanium powder before, during or after the mixing, so as to cause the raw material powder to have a desired tap density, compacting the mixed powder, and sintering the green compact under no pressure.</p> |
