Analyzing the effect of high repetition laser shock peening on dynamic corrosion rate of magnesium

被引：21
作者：
Caralapatti, Vinodh Krishna [1 ]
Narayanswamy, Sivakumar [1 ]
机构：
[1] Concordia Univ, Dept Mech Engn, Montreal, PQ H3G 1M8, Canada
来源：
OPTICS AND LASER TECHNOLOGY | 2017年 / 93卷
基金：
加拿大自然科学与工程研究理事会;
关键词：
High repetition laser shock peening; Magnesium; Corrosion; Biocompatibility; Wettability; RESIDUAL-STRESS; STAINLESS-STEEL; AL-ALLOY; BEHAVIOR; MG; BIOMATERIALS; RESISTANCE; IMPLANT; PH;
D O I：
10.1016/j.optlastec.2017.02.010
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Magnesium as implant material is being investigated extensively due to its superior suitability. With corrosion rate being the major obstacle, this paper aims to determine the effects of high repetition laser shock peening (HRLSP) on the dynamic corrosion rate of magnesium. While there is lot of research on corrosion of magnesium, in this work, a specially designed test bench was used for characterization of dynamic corrosion to mimic the physiological conditions experienced by the implant inside human body. From the results, it can be inferred that corrosion rate of peened samples reduced by at least 6 times compared to unpeened sample and sample peened with 66% overlap 1 scans exhibited the least corrosion. The wettability of the samples was also determined as a measure to analyze the effects of HRLSP on biocompatibility. In addition, peening is seen to induce surface corrosion, which minimizes the risks of implant failure. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：165 / 174
页数：10
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