论文部分内容阅读
含有Mo、Ni和Cu的扩散结合合金粉末被广泛应用于高性能的中高密度零部件中,其优良的压缩性,烧结韧性,耐疲劳性以及尺寸稳定性已得到认可。该扩散结合合金粉的特性来源于其特殊的退火工艺,该工艺可使Ni和Cu颗粒牢固地结合于Mo预合金钢粉的颗粒上,因此该扩散结合合金粉比常规预混粉有更好的化学组成均一性。近年来,通过有机粘结工艺将Ni和Cu与铁颗粒结合的强度已与扩散结合相媲美,甚至略优于扩散结合工艺。
Diffusion bonded alloy powders containing Mo, Ni and Cu are widely used in high-performance medium and high-density parts, and their excellent compressibility, sintering toughness, fatigue resistance and dimensional stability have been recognized. The properties of this diffusion bonded alloy powder are derived from its special annealing process which allows the Ni and Cu particles to be firmly bonded to the particles of the Mo prealloyed steel powder so that the diffusion bonded alloy powder is better than conventional premix powders The chemical composition of uniformity. In recent years, the bonding strength of Ni and Cu to iron particles has been comparable to that of diffusion bonding by the organic bonding process, even slightly better than the diffusion bonding process.