Ti-50at%Ni 2元系混合圧粉体の焼結過程

概要

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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.<BR>The results obtained were summarized as follows:<BR>(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.<BR>(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%.<BR>(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.
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