Abstract
In this experiment, the sintering characteristics of the Ti-50at%Ni binary mixed powder compacts were examined by the dilatometric method, and the homogenization process during sintering was discussed in relation to the internal friction which is a standard for the damping capacity.
The results obtained were summarized as follows:
(1) The expansion phenomenon during heating the Ti-50at%Ni binary mixed powder compacts was observed in the high temperature range above 800°C, and the amount of expansion became smaller with decreasing particle size of Ti powders.
(2) It was recognized that almost all parts of the Ti-50at%Ni specimen sintered at 1050°C for 4 hr showed a TiNi single phase, of which Ni content measured by the atomic absorption analysis was 50.3-50.4at%.
(3) In the internal friction curve for the same specimen mentioned above, there appeared a well-defined peak at about 35°Cfor heating process and another peak at about 20°Cfor cooling process.
