Surface microstructure and properties of pure Ti after HCPEB treatment

ZHANG Xiangdong1; 2 HAO Shengzhi1 Thierry Grosdidier2 DONG Chuang1 1

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Surface microstructure and properties of pure Ti after HCPEB treatment

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- Surface microstructure and properties of pure Ti after HCPEB treatment
- NUCLEAR TECHNIQUES Vol. 34, Issue 1, (2011)
- 作者机构：
  
  1. 大连理工大学三束材料改性教育部重点实验室
  2. LETAM,UMR CNRS FRE 3143,UniversitéPaul Verlaine,Metz
- 作者简介：
- 基金信息：
  
  国家自然科学基金国际合作项目(10911120085,50911120076);中央高校基本科研业务费专项资金(DUT10LK07)资助
- DOI：
  CLC： TG174.444
- Published：01 January 2011
- 稿件说明：
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[1]张向东,郝胜智,高泰瑞,董闯.强流脉冲电子束处理纯钛的表面组织与性能[J].核技术,2011,34(01):22-26.

ZHANG Xiangdong1, 2 HAO Shengzhi1 Thierry Grosdidier2 DONG Chuang1 1. Surface microstructure and properties of pure Ti after HCPEB treatment[J]. Nuclear techniques, 2011, 34(1): 22-26.
[1]张向东,郝胜智,高泰瑞,董闯.强流脉冲电子束处理纯钛的表面组织与性能[J].核技术,2011,34(01):22-26. DOI：

ZHANG Xiangdong1, 2 HAO Shengzhi1 Thierry Grosdidier2 DONG Chuang1 1. Surface microstructure and properties of pure Ti after HCPEB treatment[J]. Nuclear techniques, 2011, 34(1): 22-26. DOI：

摘要

研究了强流脉冲电子束处理纯钛的表层组织、显微硬度和耐蚀性能变化。经多脉冲处理的样品表面逐渐趋于平整

表层中出现非晶和纳米晶分层结构。样品表层显微硬度由原始的178 Hv提高到292 Hv。在5%NaCl溶液中进行动电位极化曲线测定

发现经15次脉冲处理样品的耐腐蚀性能最佳

自腐蚀电位由–346.4 mV提高到–188.9 mV。分析结果表明

强流脉冲电子束处理诱发高密度缺陷组织及非晶、纳米晶层结构是样品表层硬度和耐蚀性能提高的主要原因。

Abstract

In this paper

we demonstrate the microstructure modification in the surface layer and the improvement in corrosion resistance and microhardness for pure Ti samples treated by high current pulsed electron beam(HCPEB).With increasing number of pulses

the treated surfaces became relatively flatter.Multi-layer structure containing amorphous layer and nano-crystalline layer in the near surface of the treated pure Ti samples was also examined.Microhardness of the treated samples was increased from the initial 178 Hv to 292 Hv.According to the potentiodynamic polarization curves

the treated samples exhibited improved corrosion resistance in 5% NaCl solution compared with the virgin.Of all the samples

the 15-pulse treated sample is of the best corrosion resistance with the corrosion current increased from the initial –346.4 mV to –188.9 mV.The defects such as high dislocation density as well as the formation of amorphous and nano-crystalline layers induced by the HCPEB treatment were believed to be reasons for the improvements in corrosion resistance and microhardness.

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Related Institution

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