真空热处理对冷喷涂304不锈钢涂层组织与性能的影响
Effect of Vacuum Heat Treatment on Microstructure and Properties of Cold Sprayed 304 Stainless Steel Coating
摘 要
采用冷气动力喷涂技术在工业用IF钢表面制备出了304不锈钢涂层, 随后对涂层进行真空热处理, 研究了真空热处理对其组织、结合强度、硬度及耐蚀性的影响。结果表明: 304不锈钢冷喷态涂层在1 000, 1 100 ℃真空热处理2 h后, 涂层发生了回复与再结晶, 组织畸变程度和硬度降低, 1 100 ℃热处理2 h后涂层的硬度达到200 HV0.2; 真空热处理使涂层的自腐蚀电位从冷喷态时的-319 mV提高到-240 mV(SCE), 涂层表现出了良好的耐腐蚀性能。
304不锈钢涂层
真空热处理
组织
性能
cold gas dynamic spraying technology
304 stainless steel coating
vacuum heat treatment
microstructure
property
Abstract
304 stainless steel coating was deposited on industrial IF steel by a cold gas dynamic spraying technology, and vacuum heat treatment was applied to the coating to study the effects of the treatment on microstructure, bond strength, hardness and corrosion resistance of cold-sprayed 304 stainless steel coating. The results show that recovery and recrystallization happened after the as-sprayed 304 stainless steel coating was heat-treated at 1 000,1 100 ℃ for 2 h in vacuum, the distortion degree and hardness of the coating decreased and the coating was more compact. After vacuum heat treatment at 1 100 ℃ for 2 h, the hardness of the 304 stainless steel coating achieved 200 HV0.2. Vacuum heat treatment made the corrosion potential of the 304 stainless steel coating increased to -240 mV from -319 mV(SCE) in as-sprayed state, and the coating showed good corrosion resistance.
中图分类号 TG146.1
所属栏目 试验研究
基金项目 国家重点基础研究发展计划“973”项目(2009CB724305)
收稿日期 2011/9/23
修改稿日期 2012/6/15
网络出版日期
作者单位点击查看
备注朱传琳(1988-), 女, 山东青岛人, 硕士研究生。
引用该论文: ZHU Chuan-lin,MENG Xian-ming,CHENG Cong-qian,ZHANG Jun-bao,ZHAO Jie. Effect of Vacuum Heat Treatment on Microstructure and Properties of Cold Sprayed 304 Stainless Steel Coating[J]. Materials for mechancial engineering, 2012, 36(10): 23～26
朱传琳,孟宪明,程从前,张俊宝,赵杰. 真空热处理对冷喷涂304不锈钢涂层组织与性能的影响[J]. 机械工程材料, 2012, 36(10): 23～26
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参考文献
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【3】PAWLOWSKI L, WILEY, CHICHESTER. The science and engineering of thermal spray coatings[M].[S.l.]:[s.n],1995.
【4】LI W Y, LI C J, LIAO H L. Effect of annealing treatment on the microstructure and properties of cold-sprayed Cu coating[J].Journal of Thermal Spray Technology,2006,15(2):206-211.
【5】LI W Y, ZHANG C, LIAO H L. Effect of heat treatment on microstructure and mechanical properties of cold sprayed Ti coatings with relatively large powder particles[J]. Journal of Coatings Technology and Research,2009,6(3):401-406.
【6】SUDHARSHAN P P, VISHNUKANTHAN V, SUNDARA-RAJAN G. Effect of heat treatment on properties of cold sprayed nanocrystalline copper alumina coatings[J].Acta Materialia,2007,55:4741-4751.
【7】YOO Y H, LEE S H, KIM J G, et al. Effect of heat treatment on the corrosion resistance of Ni-based and Cu-based amorphous alloy coatings[J].Journal of Alloys and Compounds,2008,461:304-311.
【8】孟宪明, 梁永立, 韩玮, 等. 退火处理对冷喷涂304SS涂层组织与耐蚀性能的影响[J].材料热处理学报,2011,32(2):124-129.
【9】韩玮, 孟宪明, 赵杰, 等.真空热处理对冷喷涂304不锈钢涂层弹性模量的影响[J].材料热处理学报,2011,32(8):147-152.
【10】MCCUNE R C, DONLON W T, POPOOLA O O, et al. Characterization of copper layers produced by cold gas-dynamic spraying[J].Journal of Thermal Spray Technology,2009(1):73-82.
【11】章华兵, 张俊宝, 梁永立, 等.退火处理对冷喷涂Ni涂层组织与力学性能的影响[J].宝钢技术,2009(1):46-51.
【12】孟宪明.冷喷涂制备304不锈钢-IF钢复合钢板及其轧制共变形行为研究[D].大连: 大连理工大学,2011.
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