雾化造粒钼粉烧结过程研究
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摘要
研究了喷雾造粒钼粉脱脂、烧结过程,结果表明:该制备工艺中脱脂温度是控制造粒钼粉碳含量的重要参数;烧结过程直接影响造粒钼粉组织形貌、霍尔流速及松装密度;采用该工艺制备的造粒钼粉具备良好流动性、大松装密度,是近净成形钼精密器件及喷涂行业理想的原材料。
The degreasing and sintering process of spray granulation molybdenum powder is studied. The results show that the degreasing temperature is an important parameter to control the carbon content of granulation molybdenum powder in the preparation process. The sintering process directly affects the morphology,Hall flow rate and bulk density of granulation molybdenum powder. The granulation molybdenum powder produced by this process has good fluidity and large bulk density,andit is an ideal raw material for near net-shape molybdenum precision devices and spraying industry.
The degreasing and sintering process of spray granulation molybdenum powder is studied. The results show that the degreasing temperature is an important parameter to control the carbon content of granulation molybdenum powder in the preparation process. The sintering process directly affects the morphology,Hall flow rate and bulk density of granulation molybdenum powder. The granulation molybdenum powder produced by this process has good fluidity and large bulk density,andit is an ideal raw material for near net-shape molybdenum precision devices and spraying industry.
引文
[1]郭双全,葛昌纯,冯云彪,等.低成本等离子体球化技术制备热喷涂用球形钨粉的工艺研究[J].粉末冶金工业,2010,(3):1-4.
[2] Hedger H J,Hall A R. Preliminary observations on the use of the induction-coupled plasma torch for the preparation of spherical powder[J]. Powder Met,1961,8(1):65-70.
[3] Kumar S,Selvarajan V. Plasma spheroidization of iron powders in a non-transferred DC thermal plasma jet[J].Mater Charact,2008,59(6):781-785.
[4]李少龙,苏国平.喷镀钼粉流动性的提高途径[J].中国钼业,2003,27(2):39-41.
[5] Huang H S,Lin Y C,Hwang K S. Effect of lubricant addition on the powder properties and compacting performance of spray-dried molybdenm powders[J]. International Journal of Refractory Metals and Hard Materials,2002,20(3):175-180.
[6]田开文,尚福军,史洪刚,等.感应等离子体超细钨粉制备技术研究[J].兵器材料科学与工程,2010,(1):63-66.
[2] Hedger H J,Hall A R. Preliminary observations on the use of the induction-coupled plasma torch for the preparation of spherical powder[J]. Powder Met,1961,8(1):65-70.
[3] Kumar S,Selvarajan V. Plasma spheroidization of iron powders in a non-transferred DC thermal plasma jet[J].Mater Charact,2008,59(6):781-785.
[4]李少龙,苏国平.喷镀钼粉流动性的提高途径[J].中国钼业,2003,27(2):39-41.
[5] Huang H S,Lin Y C,Hwang K S. Effect of lubricant addition on the powder properties and compacting performance of spray-dried molybdenm powders[J]. International Journal of Refractory Metals and Hard Materials,2002,20(3):175-180.
[6]田开文,尚福军,史洪刚,等.感应等离子体超细钨粉制备技术研究[J].兵器材料科学与工程,2010,(1):63-66.