Microstructure and Properties of Electroplated Chromium Layer with Different Thicknesses

ZHAN Ruiqiu; WU Yiwen; WANG Hongbin; CHEN Yi; ZHOU Xiao; QIN Ziwei

doi:10.11973/jxgccl201803008

Materials and Mechanical Engineering > 2018 > 42(3): 43-47. > DOI: 10.11973/jxgccl201803008

ZHAN Ruiqiu, WU Yiwen, WANG Hongbin, CHEN Yi, ZHOU Xiao, QIN Ziwei. Microstructure and Properties of Electroplated Chromium Layer with Different Thicknesses[J]. Materials and Mechanical Engineering, 2018, 42(3): 43-47. DOI: 10.11973/jxgccl201803008

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Microstructure and Properties of Electroplated Chromium Layer with Different Thicknesses

1. School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China;
2. Shanghai Entry Exit Inspection and Quarantine Bureau, Shanghai 200135, China;
3. Shanghai Haiying Machinery Factory, Shanghai 200436, China

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Received Date: January 22, 2017
Revised Date: January 09, 2018

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In order to improve air tightness of the electroplated thick chromium layer, chromium layers with different thicknesses were prepared on the surface of substrate by the actual electroplating process in the factory. The surface internal stress, hardness, grain size and texture of the chromium layers with different thicknesses were studied. The results show that with the increase of the thickness, the surface internal stress of the chromium layer fluctuated. The surface internal stress was tensile stress. With the increase of the thickness, the larger grains in the chromium layer increased, but the average grain size changed little and was about 8.5 μm. With the increase of the thickness, (110) crystal surface texture gradually degraded, (200) crystal surface texture was enhanced gradually. With the increase of the thickness, the hardness of the chromium layer increased slowly and then rapidly when the thickness increased from 22.51 μm to 46.02 μm, and then increased slowly.
- electroplated chromium layer,
- surface internal stress,
- micro-hardness,
- grain size,
- texture

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