元データ 社団法人 粉体粉末冶金協会


It is known that an addition of small amount of Ni powder in Mo powder compact is effective to increase the sintered density.<BR>This paper describes the sintering characteristics of Mo-(0-3.0)%Ni powder compacts with the addition of B, NiB, MoB or C, when sintered at 1200 or 1300°C for 3.6 ks in vacuum.<BR>The results are as follows:<BR>(1) B and C powders are both effective on densification.<BR>(2) The densification is considered to be due to the liquid phases formed during sintering, this being examined by DTA and SEM.<BR>(3) The process of densification is verified by TMA.<BR>(4) NiB and MoB powders are also effective, but the bending strength is lower than that of the B addition.


坂本 卓 八代工業高等専門学校
坂本 卓 機械電気工学科