王春蕊,李惠,李建生,何昌林,张文芮

• 1:中海油能源发展装备技术有限公司工程设计研发中心
• 2:江苏科技大学先进焊接技术省级重点实验室

摘要(Abstract)：

采用等离子喷涂技术在CuCo_2Be合金表面制备Cr_3C_2-NiCr涂层,通过正交试验确定了CuCo_2Be合金表面等离子喷涂的最优工艺,并对在最佳工艺参数下喷涂的试样,选择在500℃进行高温热震试验,对热震过程中喷涂试样的失效过程进行了跟踪和失效机理研究。研究表明,涂层组织呈现明显的层状,Cr_3C_2-NiCr化合物为角状,涂层与界面的结合以机械结合为主,涂层含有一定量的非晶相。高温热震失效后的涂层中存在铜、镍的氧化物,高温失效主要源自涂层与基体的热应力与氧化过程。

关键词(KeyWords)： 等离子喷涂;Cr3C2-NiCr涂层;高温热震;失效机理

Abstract:

Keywords:

基金项目(Foundation): 江苏省教育厅高校自然基金(2014CL061J);; 兰州理工大学甘肃省有色金属新材料省部共建国家重点实验室开放课题

作者(Author): 王春蕊,李惠,李建生,何昌林,张文芮

DOI: 10.13289/j.issn.1009-6264.2016.10.031

参考文献(References)：

• [1]洪昌,朱才进,谢春生,等.水平连铸结晶器铜合金内套表面强化工艺及性能研究[J].热加工工艺,2011,40(4):115-119.HONG Chang,ZHU Cai-jin,XIE Chun-sheng,et al.Surface strengthening process and properties of Cu alloy mold of level continuous caster[J].Hot Working Technology,2011,40(4):115-119.
• [2]霍树斌,王志平,王佳杰.Co Cr Mo Si涂层冷热疲劳和磨损性能[J].焊接学报,2007,28(5):73-76.HUO Shu-bin,WANG Zhi-ping,WANG Jia-jie.Cold-hot fatigue and wear-resistance of Co Cr Mo Si coatings[J].Transactions of the China Welding Institution,2007,28(5):73-76.
• [3]李京龙,李长久.等离子喷涂熔滴的瞬时碰撞压力研究[J].西安交通大学学报,1999,33(12):30-34.LI Jing-long,LI Chang-jiu.Droplet transient impact pressure in plasma spraying[J].Journal of Xi'an Jiaotong University,1999,33(12):30-34.
• [4]徐滨士.表面工程[M].北京:机械工业出版社,2000:34.
• [5]陈健,刘雪飘,梁欢,等.Cu Cr Zr合金表面等离子喷涂Cr3C2-Ni Cr及Ni Al/Cr3C2-Ni Cr涂层的结合性能[J].焊接学报,2012,33(5):13-16.CHEN Jian,LIU Xue-piao,LIANG Huan,et al.Bonding properties of plasma sprayed Cr3C2-Ni Cr and Ni Al/Cr3C2-Ni Cr coatings on Cu Cr Zr alloy surface[J].Transactions of the China Welding Institution,2012,33(5):13-18.
• [6]LECH PAWLOWSKI.The Science and Engineering of Thermal Spray Coatings[M].Beijing:China Machine PRESS,2011:121-138.
• [7]Movahedi B.Fracture toughness and wear behavior of Ni Al-based nanocomposite HVOF coatings[J].Surface&Coatings Technology,2013,235:212-219.
• [8]Wu Qiong,Li Shusuo,Ma Yue.Study on behavior of Ni Al coating with different Ni/Al ratios[J].Vacuum,2013,93:37-44.
• [9]Matthews S,James B,Hyland M.The role of microstructure in the high temperature oxidation mechanism of Cr3C2-Ni Cr composite coatings[J].Corrosion Science,2009,51:1172-1180.
• [10]Subhash Kamal,Jayaganthan R,Prakash S.High temperature oxidation studies of detonation-gun-sprayed Cr3C2-Ni Cr coating on Fe and Ni based superalloys in air under cyclic condition at 900℃[J].Journal of Alloys and Compounds,2009,472:378-389.
• [11]ZHOU Sheng-feng,DAI Xiao-qin,ZHENG Hai-zhong.Microstructure and wear resistance of Fe-based WC coating bymulti-track overlapping laser induction hybrid rapid cladding[J].Optics&Laser Technology,2012,44(1):190-197.
• [12]Ozkan Sarikaya.Effect of some parameters on microstructure and hardness of alumina coatings prepared by the air plasma spraying process[J].Surface&Coatings Technology,2005,190:388-393.

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