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朱丽霞,罗金恒,武刚,李丽锋,张庶鑫,刘双双,陈永楠.扩散温度对TC4合金表面Cu/Ni复合镀层结构及腐蚀性能的影响[J].稀有金属材料与工程(英文),2019,48(6):1897~1903.[Zhu Lixia,Luo Jinheng,Wu Gang,Li Lifeng,Zhang Shuxin,Liu Shuangshuang and Chen Yongnan.Effect of temperature on the interface structure and corrosion ofCu/Ni coating on TC4 alloy[J].Rare Metal Materials and Engineering,2019,48(6):1897~1903.]
Effect of temperature on the interface structure and corrosion ofCu/Ni coating on TC4 alloy
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Received:December 03, 2018  Revised:February 01, 2019
DOI:
Key words: Titaium alloy  Kirkendalleffect  Intermetallic compounds (IMCs)  Corrosion resistance
Foundation item:国家重点研发计划(2017YFC0805804),国家自然科学基金资助(51471136)
Author NameAffiliation
Zhu Lixia,Luo Jinheng,Wu Gang,Li Lifeng,Zhang Shuxin,Liu Shuangshuang and Chen Yongnan  
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Abstract:
      In this paper, the diffusion behavior of Cu/Ni/Ti atoms at different temperatures was studied by means of diffusion heat treatment. The influence of diffusion process on the structure and corrosion of the coating was also discussed. The results show that the corrosion resistance of the coating surface can be effectively improved with the stable diffusion layer formed by the mutual diffusion of Cu/Ni/Ti atoms. As the thermal diffusion temperature up to 700 ℃, the compact structure of membrane layer, the NixTiy intermetallic compounds and a small amount of CuxTiy intermetallic compounds formed in the diffusion layer, the corrosion resistance of coating on the surface of the best. Temperature to 800 ℃, Kirkendall space grew up together each other, which is formed by the formation of cracks or holes and make coating porous, so as to lower the corrosion resistance, due to Kirkendall effect is triggered by atoms at the interface between Cu/Ni/Ti structure.