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Research on Preparation and Performance of Al Coating Deposited on Sintered NdFeB Permanent Magnet by Magnetron Sputtering AITranslate

LI Hong-ying; HAO Zhuang-zhi; LIU Yu-hui; ZHU Wang-wei; CHEN Yun-zhi
School of Materials Science and Engineering,Central South University,Changsha 410083,China Key Laboratory of Nonferrous Metal Materials Science and Engineering,Ministry of Education,Central South University,Changsha 410083,China Nonferrous Metal Advanced Structural Materials and Manufacturing Cooperative Innovation Center,Central South University,Changsha 410083,China Hunan Rare Earth New Energy Materials Co.,Ltd.;School of Materials Science and Engineering,Central South University,Changsha 410083,China Key Laboratory of Nonferrous Metal Materials Science and Engineering,Ministry of Education,Central South University,Changsha 410083,China Nonferrous Metal Advanced Structural Materials and Manufacturing Cooperative Innovation Center,Central South University,Changsha 410083,China Hunan Rare Earth New Energy Materials Co.,Ltd.;School of Materials Science and Engineering,Central South University,Changsha 410083,China Key Laboratory of Nonferrous Metal Materials Science and Engineering,Ministry of Education,Central South University,Changsha 410083,China Nonferrous Metal Advanced Structural Materials and Manufacturing Cooperative Innovation Center,Central South University,Changsha 410083,China Hunan Rare Earth New Energy Materials Co.,Ltd.;School of Materials Science and Engineering,Central South University,Changsha 410083,China Key Laboratory of Nonferrous Metal Materials Science and Engineering,Ministry of Education,Central South University,Changsha 410083,China Nonferrous Metal Advanced Structural Materials and Manufacturing Cooperative Innovation Center,Central South University,Changsha 410083,China Hunan Rare Earth New Energy Materials Co.,Ltd.;School of Materials Science and Engineering,Central South University,Changsha 410083,China Key Laboratory of Nonferrous Metal Materials Science and Engineering,Ministry of Education,Central South University,Changsha 410083,China Nonferrous Metal Advanced Structural Materials and Manufacturing Cooperative Innovation Center,Central South University,Changsha 410083,China Hunan Rare Earth New Energy Materials Co.,Ltd.
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Abstract AITranslate

Pure Al coating was deposited on NdFeB magnet by direct current（DC）magnetron sputtering.The influences of sputtering power and substrate temperature on microstructure and corrosion resistance of Al coating were investigated.The surface morphology of Al coating was characterized by scanning electron microscopy（SEM）.The adhesion strength between Al coating and NdFeB substrate was characterized by vertical tensile test.The corrosion resistance was investigated by potentiodynamic polarization curves and neutral salt spray（NSS）test.The results indicate that the lower the sputtering power,the higher the substrate temperature,and the better the properties of Al coating.Al coating deposited at 2.0 kW sputtering power and 300 ℃ substrate temperature has smooth surface and fine and compact grains,and its adhesion strength to the substrate reaches 25.13 MPa.Furthermore,the above coating has the optimal corrosion resistance,and it is still intact with a little pitting on surface after 6 d NSS test.

KeyWords AITranslate

sintered NdFeB permanent magnet aluminum coating magnetron sputtering adhesion strength corrosion resistance

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Basic Information:

DOI：

Chinese Library Classification Number:TG174.444[金属学及工艺—金属表面处理]

Citation Information:

Pure Al coating was deposited on NdFeB magnet by direct current（DC）magnetron sputtering.The influences of sputtering power and substrate temperature on microstructure and corrosion resistance of Al coating were investigated.The surface morphology of Al coating was characterized by scanning electron microscopy（SEM）.The adhesion strength between Al coating and NdFeB substrate was characterized by vertical tensile test.The corrosion resistance was investigated by potentiodynamic polarization curves and neutral salt spray（NSS）test.The results indicate that the lower the sputtering power,the higher the substrate temperature,and the better the properties of Al coating.Al coating deposited at 2.0 kW sputtering power and 300 ℃ substrate temperature has smooth surface and fine and compact grains,and its adhesion strength to the substrate reaches 25.13 MPa.Furthermore,the above coating has the optimal corrosion resistance,and it is still intact with a little pitting on surface after 6 d NSS test.

quote

GB/T 7714-2015 [1] LI Hong-ying, HAO Zhuang-zhi, LIU Yu-hui, et al. Research on Preparation and Performance of Al Coating Deposited on Sintered NdFeB Permanent Magnet by Magnetron Sputtering[J]. Rare Metals and Cemented Carbides, 2016(5): 48-54.
MLA [1] LI Hong-ying, et al., "Research on Preparation and Performance of Al Coating Deposited on Sintered NdFeB Permanent Magnet by Magnetron Sputtering." Rare Metals and Cemented Carbides, no. 5, 2016, pp. 48-54.
APA [1] LI Hong-ying, HAO Zhuang-zhi, LIU Yu-hui, ZHU Wang-wei, & CHEN Yun-zhi. (2016). Research on Preparation and Performance of Al Coating Deposited on Sintered NdFeB Permanent Magnet by Magnetron Sputtering. Rare Metals and Cemented Carbides(5), 48-54.
IEEE [1] LI Hong-ying, HAO Zhuang-zhi, LIU Yu-hui, ZHU Wang-wei, and CHEN Yun-zhi, "Research on Preparation and Performance of Al Coating Deposited on Sintered NdFeB Permanent Magnet by Magnetron Sputtering," Rare Metals and Cemented Carbides, no. 5, pp. 48-54, 2016. keywords: {sintered NdFeB permanent magnet;aluminum coating;magnetron sputtering;adhesion strength;corrosion resistance}