High-temperature-oxidation-resistant high-strength Ti3SiC2 hard alloy and preparing process thereof

The invention relates to the powder metallurgy technology, and relates to a high-temperature-oxidation-resistant high-strength Ti3SiC2 hard alloy and a preparing process thereof. The hard alloy is composed of tungsten carbide powder, cobalt powder and Ti3SiC2 powder, the mass ratio of the tungsten carbide powder is 72% to 85%, the mass ratio of the cobalt powder is 10% to 20%, the mass ratio of the Ti3SiC2 powder is 5% to 10%, and the hard alloy is prepared through the powder metallurgy technology. The high-temperature-oxidation-resistant high-strength Ti3SiC2 hard alloy can bear the high temperature ranging from 800 DEG C to 1100 DEG C, and the high-temperature strength ranges from 800 N/mm to 1800 N/mm . 本发明涉及粉末冶金技术，是种耐高温氧化高强度TiSiC硬质合金及其制备工艺。本发明的硬质合金，由碳化钨粉、钴粉和TiSiC粉末组成，各自所占质量比：碳化钨粉为72～85％、钴粉为10～20％、TiSiC粉末为5～10％，通过粉末冶金工艺制备。它可承受800～1100℃的高温，高温强度为800～1800N/mm。