Abstract
It is known that an addition of small amount of Ni powder in Mo powder compact is effective to increase the sintered density.
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.
The results are as follows:
(1) B and C powders are both effective on densification.
(2) The densification is considered to be due to the liquid phases formed during sintering, this being examined by DTA and SEM.
(3) The process of densification is verified by TMA.
(4) NiB and MoB powders are also effective, but the bending strength is lower than that of the B addition.
