抄録
Rod shape compacts and cylindrical shape compacts of WC-FeAl were prepared by TZS (Traveling Zone Sintering). The TZS method is a kind of electrical current sintering. Electrodes slide on graphite outer die at a constant speed, and a long object is sintered by a heated region moving. Using WC-40vol%FeAl powder, a rod sintered compact was produced by the TZS at 1280-1350 degree C at a moving speed of electrodes of 0.7 mm/min. At 1280 degree C, the rod shaped compact included with 38vol%FeAl was homogenously produced. The hardness of center axis region of the rod was HRA 87 except the sintering start region of the rod. In the sintering start position of the rod, a region of FeAl-rich phase exists and the length of the region was about 10 mm. However, at 1300 degree C, the region of FeAl-rich phase was 15 mm in length. Higher sintering temperature leads to wider FeAl-rich phase. Additionally, a cylindrical compact was produced by using graphite rod as a core.
