期刊论文

Zhang, C.

中文

金属热处理

0254-6051

2015

40

2

86-90

10.13251/j.issn.0254-6051.2015.02.018

湖南省科技计划项目（No.2011FJ6060） 湖南省重点学科建设资助项目（湘教发[2011]76号） 湖南省高校科技创新团队支持项目（湘教通[2012]318号）

本校为第一且通讯机构

对以316L不锈钢为本体、以Stellite 6合金为密封面激光堆焊层的核阀试样进行高温、大剂量的C~+注入,测试分析了注入层的微区成分、C~+浓度分布及其表面物相,测试了堆焊层受注前后面的表面粗糙度及显微硬度,并进行了摩擦磨损性能的对比研究。结果表明,高的靶温和大剂量共同产生的增强扩散作用以及表面溅射效应可使C~+的注入深度提高2个数量级,且浓度呈准高斯状分布;位错强化、析出强化、固溶强化及碳化物的弥散强化作用提高了注入层的显微硬度,使注入层的抗磨损性能明显提高。

C+ at high temperature with high doses was carried out on nuclear valve samples which substrate is 316L stainless steel and the laser surfacing layer on sealing surface is Stellite 6 alloy. Micro area composition, C+ concentration distribution and phase composition of the implanted layer were tested and analyzed. Surface roughness and microhardness of the clad layer before and after C+ implantation were measured. Friction and wear properties were tested. The results indicate that the C+ implanted depth can be improved 2 orders of magnitude by e...