电沉积镍合金的冲蚀-腐蚀磨损研究

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振动与冲击 ›› 2012, Vol. 31 ›› Issue (21) : 137-142.

论文

电沉积镍合金的冲蚀-腐蚀磨损研究

姜良锋1,2，杨顺贞2，纪秀林1,2

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Interaction between erosion-corrosion of electroplated Ni and Ni alloy coating

JIANG Liang-feng1,2, YANG Shun-zhen1, JI Xiu-lin1,2

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摘要

采用MSH型腐蚀磨损试验机研究了电沉积纯Ni、Ni-P非晶合金、Ni-W-P非晶合金的冲蚀-腐蚀磨损行为，并结合电化学测量系统研究了上述材料冲蚀与腐蚀之间相互促进机理。结合XRD分析了冲蚀前后电沉积镍合金的相变行为。结果表明：冲蚀-腐蚀磨损试验前后，电沉积镍合金镀层的硬度都增加；Ni-P非晶合金受到冲击后，镀层明显的发生了由非晶向微晶的转变；镍合金在含盐砂浆中的腐蚀性能随着工况的不同而不同，试样在含盐砂浆中的冲击速度由0增加到3.14ms-1时，三种材料的腐蚀速率都减小，之后随着冲击速度的增大，试样腐蚀速度增加；镍及镍合金材料的冲蚀-腐蚀磨损失重都以冲蚀失重为主，试验条件下冲蚀与腐蚀的交互作用最高能使材料的冲蚀-腐蚀磨损失重增加42%。

Abstract

The aim of this paper is to use a modified slurry pot erosion tester investigated the erosion-corrosion behavior of electroplated Ni, amorphous Ni-P and Ni-W-P alloy coating. The synergism between erosion and corrosion of various types of materials has been studied by electrochemically instrumented slurry pot apparatus. Crystallization processes of Ni-based amorphous alloy during erosion-corrosion were investigated using X-ray diffraction analysis. Results suggest that the hardness of Ni and Ni alloy increased after erosion-corrosion; Ni-P alloy Amorphous-to-nano-crystalline transformation during erosion-corrosion. The passive current density of the Ni and Ni alloy changed during erosion-corrosion, As flow velocity increased from 0 to 3.14ms-1 ,The corrosion rate of samples decreased, then the erosion-corrosion rate increasing with the increasing impingement velocity. In slurry content circumstances, erosion is the main mass loss mode，while corrosion is minor, and the weight loss of synergistic effects between erosion and corrosion even increased to 42%.

导出引用

姜良锋;&#;杨顺贞;纪秀林;. 电沉积镍合金的冲蚀-腐蚀磨损研究[J]. 振动与冲击, 2012, 31(21): 137-142

JIANG Liang-feng;YANG Shun-zhen;JI Xiu-lin;. Interaction between erosion-corrosion of electroplated Ni and Ni alloy coating[J]. Journal of Vibration and Shock, 2012, 31(21): 137-142