作　　者： ; ; ; ; ;

机构地区： 河南科技大学材料科学与工程学院

出　　处： 《铸造技术》 2006年第2期167-169,共3页

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。 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.

关 键 词： 合金 渗铝 催渗 内氧化 弥散强化

领　　域： [金属学及工艺] [一般工业技术] [金属学及工艺]