钛合金表面电火花原位沉积TiC颗粒强化层的组织与硬度
Microstructure and Microhardness of TiC Particles Reinforced Coating In-situ Deposited on Titanium Alloy Surface by Electrospark Process
摘 要
以石墨为电极, 采用电火花沉积工艺在BT20钛合金表面沉积了TiC颗粒得到了强化层, 并对该强化层的组织和硬度进行了研究。结果表明: 强化层分布不连续, 厚度也不均匀, 最厚处可达30 μm, 最薄处还不到10 μm; 强化层中TiC颗粒的分布不均匀, 大量TiC聚集于强化层表面, 内部很少, 这使得强化层表面硬度达到了基体的5倍以上。
电火花沉积
强化层
原位沉积
titanium alloy
eletrospark deposition
reinforced coating
in-situ deposition
Abstract
Taking the graphite as electrode, TiC particles were deposited on BT20 titanium alloy surface by eletrospark processing to form a reinforced coating. The microstructure and microhardness of the coating were studied. The results show that the coating was discontinuous and uneven with the thickness of 10-30 μm. The distribution of TiC particles in the reinforced coating was non-uniform, most of TiC existed on the reinforced coating surface and a little inside of the reinforced coating, which made the microhardness of the reinforced coating 4 times higher than that of the titanium alloy substrate.
中图分类号 TG135.6
所属栏目 试验研究
基金项目
收稿日期 2011/11/16
修改稿日期 2012/7/30
网络出版日期
作者单位点击查看
备注王忠英(1954-), 女, 山东烟台人, 副教授, 学士。
引用该论文: WANG Zhong-ying,PANG Yong-ping,WANG Kun. Microstructure and Microhardness of TiC Particles Reinforced Coating In-situ Deposited on Titanium Alloy Surface by Electrospark Process[J]. Materials for mechancial engineering, 2012, 36(12): 25～27
王忠英,庞永平,王坤. 钛合金表面电火花原位沉积TiC颗粒强化层的组织与硬度[J]. 机械工程材料, 2012, 36(12): 25～27
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