【摘要】 用催渗和不催渗两种渗剂在相同工艺条件下对Cu-Al合金表面渗铝,用工业N2中的余氧作为内氧化介质对渗铝试样进行内氧化,从而在试样表面得到硬化层。对渗铝层和内氧化层的显微结构以及硬度分布进行观察分析。结果表明:CeCl3对Cu-Al合金渗铝过程具有明显的催渗效果,在同等工艺条件下渗层厚度由未催渗的100μm提高为138μm;经内氧化后催渗试样形成了厚度为200μm左右的硬化层。硬化层内析出有大量弥散分布的Al2O3微粒。更多还原

【Abstract】 A method of the aluminizing treatment on the surface of trace Cu-Al alloy with and without the addition of aluminizing agent at the same condition was investigated.The followed internal oxidation of the aluminized Cu-Al alloy was carried out using the residue oxygen in the commercial nitrogen gas medium to generate Al₂O₃ dispersed hardening copper matrix composites.The hardness distribution in aluminized layer and microstructure were studied.Results show that the addition of rare earth oxide CeCl₃ has a significant accelerating effect on the aluminizing.At the same condition,the aluminized layer increases from 100 μm without aluminizing agent to 138 μm with aluminizing agent.After the internal oxidation of CeCl₃ aluminizing sample,a hardening layer with about 200 μm depth is formed,in which a large number of Al₂O₃ particles disperse.更多还原