铁对紫铜渗铝层α+γ_2组织和性能的影响  

Influence of iron on microstructure and properties of α+γ_2 in the Al permeating layer on red copper

作　　者：王国凡[1] 汤爱君[1] 罗辉[1] 季燕菊[1] 

机构地区：[1]山东建筑大学材料科学与工程学院,山东济南250101

出　　处：《金属热处理》2009年第1期94-97,共4页Heat Treatment of Metals

基　　金：山东省科学自然基金项目(Y2005F18);山东省中青年科学科研奖励基金(2006BSB01447)

摘　　要：在紫铜渗铝的基础上,同时渗入比铜和铝熔点高、比铜溶解度小的铁元素,进行固溶处理。用扫描电子显微镜、能谱仪和显微硬度计测试了渗层的组织、成分和显微硬度,用X射线衍射仪分析了物相、用动载磨料磨损试验机进行了耐磨试验、在高温箱式电阻炉中进行了耐热性试验。结果表明,Fe可以细化α+γ2组织,使片间距小、片短、更致密,抗氧化和耐磨性好于单一渗铝组织。On the basis of red copper aluminizing, a containing iron diffusion layer with higher fusion point than that of both copper and aluminum and with smaller solubility than that of copper is formed and then processed with solusion treatment. The microstructure, elements distribution and hardness of the permeating layer were analyzed and tested by SEM, energy spectrometer and micro-hardometer. The phases, wear resistance and heat resistance were also analyzed and tested by X-ray diffraetometer, dynamic-load grinding abrasion and high- temperature box-type electrical resistance furnace respectively. The results show that Fe can refine the α＋γ2 microstrncture with the shorter and compact lamellar structure. Therefore, the anti-oxidation and wear resistance are better than that of the microstructure of single aluminizing.

关 键 词：紫铜 多元共渗 组织形态 抗氧化性能 耐磨性能 

分 类 号：TG156.8[金属学及工艺—热处理]