孔隙对陶瓷涂层绝缘性能的影响及处理
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摘要
采用等离子喷涂法在试样表面喷涂氧化铝涂层,并对涂层进行封孔处理和磨削加工,对涂层厚度、孔隙率、绝缘性能进行检测。结果表明:等离子喷涂陶瓷涂层存在孔隙,孔隙率越低,涂层的绝缘性能越好;封孔处理后,涂层的绝缘性能得到进一步提高,且磨削加工对封孔效果影响不大。
The Al_2O_3 coatings on surfaces of samples are prepared by plasma spraying,and the hole sealing treatment and grinding processing are carried out for coatings. The thicknesses,porosities and insulation performance of coatings are tested. The results show that the ceramic coatings sprayed by plasma have porosity. The lower the porosity is,the better the insulation performance of the coatings. The insulation performance of coatings is improved after hole sealing treatment,and the grinding processing has a little effect on hole sealing effect.
The Al_2O_3 coatings on surfaces of samples are prepared by plasma spraying,and the hole sealing treatment and grinding processing are carried out for coatings. The thicknesses,porosities and insulation performance of coatings are tested. The results show that the ceramic coatings sprayed by plasma have porosity. The lower the porosity is,the better the insulation performance of the coatings. The insulation performance of coatings is improved after hole sealing treatment,and the grinding processing has a little effect on hole sealing effect.
引文
[1]李晓宾.消除轴电流,提高电机轴承运行寿命[J].中国科技博览,2015(8):105.
[2] LAMPKE T,MEYER D,ALISCH G,et al. Alumina coating obtained by thermal spraying and plasma anodising A comaparison[J]. Surface&Coatings Technology,2011,206:2012-2016.
[3] ARUNA S T,BALAJI N,SHEDTHI J,et al. Effect of critical plasma spray parameters on the microstructure,microhardness and wear and corrosion resistance of plasma sprayed alumina coatings[J]. Surface&Coatings Technology,2012,208:92-100.
[4]陈丽梅,李强.等离子喷涂技术现状及发展[J].热处理技术与装备,2006,27(1):1-5.
[5]邓世均.高性能陶瓷涂层[M].北京:化学工学出版社,2003.
[6]李庆林.电机轴承用Al2O3基复合陶瓷绝缘涂层的制备及性能研究[D].洛阳:河南科技大学,2017.
[7]黎樵燊,朱又春.金属表面热喷涂技术[M].北京:化学工业出版社,2009.
[8]郭瑞.等离子喷涂AT/Al2O3复合涂层的结构优化与绝缘性能[D].秦皇岛:燕山大学,2013.
[2] LAMPKE T,MEYER D,ALISCH G,et al. Alumina coating obtained by thermal spraying and plasma anodising A comaparison[J]. Surface&Coatings Technology,2011,206:2012-2016.
[3] ARUNA S T,BALAJI N,SHEDTHI J,et al. Effect of critical plasma spray parameters on the microstructure,microhardness and wear and corrosion resistance of plasma sprayed alumina coatings[J]. Surface&Coatings Technology,2012,208:92-100.
[4]陈丽梅,李强.等离子喷涂技术现状及发展[J].热处理技术与装备,2006,27(1):1-5.
[5]邓世均.高性能陶瓷涂层[M].北京:化学工学出版社,2003.
[6]李庆林.电机轴承用Al2O3基复合陶瓷绝缘涂层的制备及性能研究[D].洛阳:河南科技大学,2017.
[7]黎樵燊,朱又春.金属表面热喷涂技术[M].北京:化学工业出版社,2009.
[8]郭瑞.等离子喷涂AT/Al2O3复合涂层的结构优化与绝缘性能[D].秦皇岛:燕山大学,2013.