| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce production cost by lowering a sintering temperature furthermore, when producing a high-density and high-hardness titanium diboride-based sintered compact which is necessary for application to a structural member or the like. <P>SOLUTION: A sintering aid containing as a main component, AL<SB POS="POST">3</SB>Ti, or (Al, M)<SB POS="POST">3</SB>Ti wherein M is one or two or more kinds of combinations of Ni, Cr, Fe, Mo and Cu is used at the weight ratio of the sintering aid of ≥10% and ≤50%, and a sintering material which is mixed powder with a metal boride base component containing TiB<SB POS="POST">2</SB>as a main component is sintered at 1,000°C, and thereby a high-denseness and high-hardness titanium diboride-based sintered compact having Vickers hardness of ≥500 and bending strength of ≥200 MPa can be produced. By using the sintering aid containing (Al, M)<SB POS="POST">3</SB>Ti as the main component at the weight ratio of ≥20% and ≤40%, a high-denseness, high-hardness and high-strength titanium diboride-based sintered compact having Vickers hardness of ≥800 and bending strength of ≥300 MPa can be produced at the sintering temperature of 1,000°C. <P>COPYRIGHT: (C)2012,JPO&INPIT |
