摘要
采用冷动力喷涂法以纯钨和钨-镍-铁合金为原料在铜合金基体上制备了钨涂层和钨-镍-铁涂层.研究了冷喷涂过程中钨粉粒径、喷涂距离等因素对涂层性能的影响.用扫描电子显微镜分析了涂层的表面、断面微观结构,并用原予力显微镜测量了涂层的粗糙度.此外,计算了冷喷涂过程中粉末颗粒的实际速度,并采用有限元分析软件ANSYS/LS-DYNA模拟了冷喷涂过程中颗粒撞击基体时的变形情况.
Results of optical microscopy,scanning electron microscopy,AFM are presented for tungsten coating produced by low and high cold gas dynamic spraying,respectively.The critical velocity of tungsten powder was calculated,what is more,tungsten particles collision was also simulated by soft ANSYS/LS-DYNA.Cold gas dynamic spray（CGDS） is a rapidly developing coating technology, in which spray particle are deposited through plastic impact on substrate at high velocities at low temperature.In these experiments,the process produced a reasonably dense tungsten coating and tungsten alloy coating.This paper reports the effect of deposition parameters which including temperature,spraying distance,particle size,etc.on the structures formed.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2012年第2期36-44,共9页
Acta Physica Sinica
基金
聚变堆面向等离子体材料的基础研究项目(批准号:2010GB109000)资助的课题~~
关键词
钨涂层
钨-镍-铁涂层
冷喷
沉积机理
tungsten coating
W-Ni-Fe coating
cold spraying
deposition mechanism
