Study Of SHS-WC Kentanium Producing Technology

Ultra fine powder of tungsten carbide alloy is produced in self-propagating apparatus with different process parameters. The varied results of different parameters are studied with micro-analysis to systematically know what the influce of self-propagating process to the property of the tungsten carbide powder is. This will provide the theory evidence to the sintering of self-propagating powder. Research scheme and technical route are listed as follows:Ingredients designâ†'SHS reactionâ†'powder processâ†'powder granulationâ†'cement sinteringâ†'after-processâ†'performance test.WC was sintered by gas pressure or gasless pressure sintering method using SHS-WC powder and some other additives. Scanning electron microscope was used to observe the micro structure of the materials. The content of crystalline phases was determined with X-ray diffraction (XRD) analysis (Rigaku Geigerflex D/Max, C Series, Cu Ka radiation Japan) and the morphologies of the as-synthesized products were observed to know the property of the materials.The study shows that small crystalline grain size Kentanium with high rigidity can be obtained through vaccum sintering the Ultra-fine SHS-WC powder blended with depressant. Too long time of holding temperature stage may lead to the abnormal growth of crystalline grain. Correspondingly the property of the Kentanium will also become worse.