当前位置:主页 > 科技论文 > 铸造论文 >

纯钛表面等电位空心阴极辉光放电无氢渗碳的研究(英文)

发布时间:2018-09-09 08:19
【摘要】:在纯钛相变温度下,利用等电位空心阴极辉光放电技术在纯钛表面进行无氢渗碳处理。分别利用扫描电子显微镜、能谱仪和X射线衍射仪对试样的表面形貌、成分分布和相组成进行分析;利用摩擦磨损试验仪对试样的摩擦学性能进行研究;利用电化学工作站,在室温静态条件下对试样在3.5%Na Cl水溶液中的耐蚀性能进行研究。结果显示,经过无氢渗碳处理,在纯钛表面形成了高硬度的合金改性层,改性层的最大厚度是7.5μm,最大HV_(0.2)显微硬度为12.98 GPa,是基体硬度的5.43倍。由于表面硬度的提高,试样的耐磨性能也显著增强,试样的平均摩擦系数是0.312,较原始试样的0.746明显降低。在3.5%NaC l水溶液中,试样的最低年腐蚀速率是原始试样的1/11。因此,在保证基体力学性能的前提下,试样的耐磨耐蚀性能明显提高。
[Abstract]:Hydrogen free Carburizing was carried out on the surface of pure titanium by using the constant potential hollow cathode glow discharge technique at the phase change temperature of pure titanium. The surface morphology, composition distribution and phase composition of the sample were analyzed by scanning electron microscope, energy spectrometer and X-ray diffractometer, the tribological properties of the sample were studied by friction and wear tester, and the electrochemical workstation was used to study the tribological properties of the sample. The corrosion resistance of samples in 3.5%Na Cl aqueous solution was studied at room temperature. The results show that after hydrogen-free Carburizing, a high hardness alloy modified layer is formed on the surface of pure titanium. The maximum thickness of the modified layer is 7.5 渭 m and the maximum HV_ _ (0.2) microhardness is 12.98 GPa, which is 5.43 times of the matrix hardness. Because of the increase of surface hardness, the wear resistance of the sample is also significantly enhanced. The average friction coefficient of the sample is 0.312, which is obviously lower than that of the original sample (0.746). In 3.5%NaC l aqueous solution, the lowest annual corrosion rate of the sample is 1 / 11 of the original sample. Therefore, on the premise of ensuring the mechanical properties of the matrix, the wear resistance and corrosion resistance of the samples are obviously improved.
【作者单位】: 北京石油化工学院;北京科技大学;北京化工大学;
【基金】:Beijing Institute of Petrochemical Technology Breeding Project of Outstanding Academic Leaders(BIPT-BPOAL-2013)
【分类号】:TG156.81

【相似文献】

相关期刊论文 前3条

1 思健;阴极辉光放电与工作频率的关系[J];中国照明电器;2001年06期

2 张真;汪正;邹慧君;施鹰;;大气压电解液阴极辉光放电发射光谱技术的研究进展及应用[J];分析化学;2013年10期

3 ;[J];;年期

相关硕士学位论文 前6条

1 盖荣银;液体阴极辉光光谱仪在陶瓷材料分析中的应用[D];长春工业大学;2015年

2 焦距;钾盐及锂资源勘查现场分析技术研究与应用[D];中国地质科学院;2016年

3 李康华;液体阴极辉光放电光谱检测系统及其应用研究[D];哈尔滨工业大学;2016年

4 周磊;液体阴极辉光光谱仪应用于阴阳离子检测的研究[D];东华大学;2016年

5 曾笑波;基于SC-GD耦合滤光分选系统检测水体金属离子的研究[D];重庆邮电大学;2016年

6 刘晓;锂辉石和卤水中锂的液体阴极辉光放电快速检测方法研究及应用[D];中国地质科学院;2017年



本文编号:2231830

资料下载
论文发表

本文链接:https://www.wllwen.com/kejilunwen/jiagonggongyi/2231830.html


Copyright(c)文论论文网All Rights Reserved | 网站地图 |

版权申明:资料由用户c089a***提供,本站仅收录摘要或目录,作者需要删除请E-mail邮箱bigeng88@qq.com