张震,钱伟峰,李景,陈永楠,郝建民,陈宏,赵秦阳,李宏战,赵永庆.原位合成ZrO2/MgO膜层及自修复裂纹研究[J].稀有金属材料与工程,2022,51(8):2979~2984.[Zhang Zhen,Qian Weifeng,Li Jing,Chen Yongnan,Hao Jianmin,Chen Hong,Zhao Qinyang,Li Hongzhan,Zhao Yongqing.In-situ synthesis of ZrO2/MgO coating and self-repairing cracks[J].Rare Metal Materials and Engineering,2022,51(8):2979~2984.]
原位合成ZrO2/MgO膜层及自修复裂纹研究
投稿时间:2021-07-14  修订日期:2021-09-01
中文关键词:  : 镁合金  微弧氧化  自修复  原位ZrO2  磨损性能
基金项目:陕西省科技重大专项(项目号2020zdzx04-03-02),陕西省重点研发计划(项目号2020GY-249,2020ZDLGY12-09),陕西省陕煤联合(2019JLM-47),西安市未央区科技计划 (202007),西安市科技计划项目 (2020KJRC0128),中央高校基本科研业务费专项资金 (300102319304, 300102310107)
中文摘要:
      微弧氧化熔融冷却成膜过程出现的裂纹将影响膜层的强韧性和磨损性能。本文利用ZrO2自身的强韧性,采用原位合成制备具有自修复裂纹作用的ZrO2/MgO膜层,研究原位合成的ZrO2对膜层磨损性能的影响。研究发现,微弧氧化原位合成ZrO2在高温放电通道发生相变产生体积膨胀氧化锆界面萌生微裂纹,抑制了成膜过程裂纹扩展从而实现自修复膜层裂纹的作用。通过控制锆源含量可以实现了对膜层中ZrO2含量的调控,膜层中原位ZrO2含量为32%,ZrO2/MgO膜层裂纹呈现细小分散化,裂纹密度较传统膜层下降63.4%,摩擦系数减小53.4%,磨损量降低66.7%。研究认为,原位合成的ZrO2在膜层制备过程的自修复裂纹和耐磨性的提高,可以降低摩擦系数和磨损量,改善ZrO2/MgO膜层表面磨损性能。
In-situ synthesis of ZrO2/MgO coating and self-repairing cracks
英文关键词:Magnesium alloy  Micro-arc oxidation  self-repairing  In-situ ZrO2  Wear properties
英文摘要:
      The cracks will impact the toughness and wear properties in the coating formation process of micro-arc oxidation melting and cooling. This paper uses the ZrO2 strength and toughness to prepare ZrO2/MgO coating with self-repairing cracks, and investigates the effect of in-situ ZrO2 on the wear properties of the coating. The research found that the in-situ synthesis ZrO2 by micro-arc oxidation undergoes phase transition in the high-temperature discharge channel to generate volume expansion and micro-cracks initiation at the interface of zirconia, which inhibits the crack propagation during the coating formation process and realizes the role of self-repairing coating cracks.The ZrO2 content in the coating can be regulated by controlling the content of the zirconium source, the in-situ ZrO2 content in the coating is 32%, the cracks of the ZrO2/MgO coating are finely dispersed, and the crack density is 63.4% lower than that of the traditional coating, the friction coefficient is reduced by 53.4%, the amount of wear descended by 66.7%. Research thinks, the in-situ synthesized ZrO2 self-repairing cracks and improvement of wear resistance during the coating preparation process, which can reduce the friction coefficient and mass loss, and improve the surface wear properties of the ZrO2/MgO coating.
作者单位E-mail
张震 长安大学材料科学与工程 zhangzhen_chd@163.com 
钱伟峰 长安大学材料科学与工程  
李景 长安大学材料科学与工程  
陈永楠 长安大学材料科学与工程 frank_cyn@163.com 
郝建民 长安大学材料科学与工程  
陈宏 长安大学材料科学与工程  
赵秦阳 长安大学材料科学与工程  
李宏战 西北有色金属研究院  
赵永庆 西北有色金属研究院  
摘要点击次数: 59
全文下载次数: 53
查看全文   查看/发表评论    HTML
关闭