METHOD FOR SINTERING TITANIUM-BASED POWDER COMPACT

摘要

PROBLEM TO BE SOLVED: To provide a method for sintering a titanium-based powder compact capable of producing a titanium-based sintered compact having reduced contamination caused by oxygen or the like even in an inert gas atmosphere and having satisfactory mechanical properties. SOLUTION: A titanium-based powder compact 1 compacted from raw material powder essentially consisting of titanium is sintered by a heating furnace using a graphite heater in an inert gas atmosphere under the pressure of atmospheric pressure or higher, under an oxygen concentration of≤50 ppm, and under a CO concentration of≤100 ppm. At this time, the titanium-based powder compact 1 is supported by a supporting member 2 and is installed inside a case 3 made of graphite. The supporting member 2 is composed of a base part 20 and a reaction control part 21 comprising at least either Y2O3or ZrO2, and comes into contact with the titanium-based powder compact 1 via the reaction control part 21. Further, a sintering promotion member 5 made of titanium for forming a sintering promotion atmosphere is arranged around the titanium-based powder compact 1. COPYRIGHT: (C)2006,JPO&NCIPI