周勤勤,郝建民,陈永楠,陈宏,丁业立.TC4在锆盐体系下微弧氧化膜层的生长特性研究[J].表面技术,2017,46(5):6-11.
ZHOU Qin-qin,HAO Jian-min,CHEN Yong-nan,CHEN Hong,DING Ye-li.Growth Characteristic of Micro-arc Oxide Coating on TC4 in Zirconium Salt System[J].Surface Technology,2017,46(5):6-11
TC4在锆盐体系下微弧氧化膜层的生长特性研究
Growth Characteristic of Micro-arc Oxide Coating on TC4 in Zirconium Salt System
投稿时间:2016-10-08  修订日期:2017-05-20
DOI:10.16490/j.cnki.issn.1001-3660.2017.05.002
中文关键词:  微弧氧化  钛合金  显微硬度  锆盐体系  ZrO2/TiO2  孔隙率
英文关键词:micro-arc oxidation  titanium alloy  micro-hardness  zirconium salt system  ZrO2/TiO2  porosity
基金项目:国家自然科学基金(51301022)
作者单位
周勤勤 长安大学 材料科学与工程学院,西安 710064 
郝建民 长安大学 材料科学与工程学院,西安 710064 
陈永楠 长安大学 材料科学与工程学院,西安 710064 
陈宏 长安大学 材料科学与工程学院,西安 710064 
丁业立 山东交通学院 海运学院,山东 威海 264200 
AuthorInstitution
ZHOU Qin-qin School of Materials Science and Engineering, Chang′an University, Xi′an 710064, China 
HAO Jian-min School of Materials Science and Engineering, Chang′an University, Xi′an 710064, China 
CHEN Yong-nan School of Materials Science and Engineering, Chang′an University, Xi′an 710064, China 
CHEN Hong School of Materials Science and Engineering, Chang′an University, Xi′an 710064, China 
DING Ye-li Maritime College, Shandong Jiaotong University, Weihai 264200, China 
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中文摘要:
      目的 通过建立ZrO2/TiO2复合陶瓷膜层的氧化时间与膜层生长的动力学关系,探究膜层生长对膜层显微硬度的影响规律,寻找制备高硬度微弧氧化膜层的最佳时间。方法 在锆盐溶液体系和已优化的电参数条件下,对TC4进行不同时间的微弧氧化处理,分析所得膜层的表面和截面形貌、元素分布及相组成,进行膜层表面孔隙率和显微硬度的测定并分析。结果 测试氧化时间内膜层生长表现出不同的动力学特征和宏观表象,膜层的生长分为两个阶段:第一阶段膜厚呈线性增加,第二阶段膜厚增长速率减缓。表面孔隙率随时间的增大而增大。在氧化15 min时所得的膜层硬度最高,且随时间的增加,膜层的显微硬度呈先增后减的趋势。结论 影响微弧氧化膜层显微硬度的主要因素包括膜层相组成和表面结构。在微弧氧化膜层厚度呈线性增长的过程中,显微硬度线性增大;在膜厚缓慢增长的过程中,显微硬度降低。
英文摘要:
      The work aims to explore influence law of coating growth on its micro-hardness and determine the best time of preparing high-hardness micro-arc oxide coating by establishing dynamic relationship between oxidation time and coating growth of ZrO2/TiO2 composite ceramic coating. Micro-arc oxidation was performed to TC4 for different time provided with zirconium salt system and optimized electrical parameters to analyze coating surface and cross-section morphology, elements distribution and phase composition, measure and analyze microhardness and porosity of the coating. The coating growth exhibited different dynamic characteristics and macroscopic appearance in the test oxidation time. There were two stages during the coating growth: the coating thickness increased linearly in the first stage, and then growth rate slowed down in the second stage. The surface porosity increased over time. The hardness was the highest when the oxidization has last for 15 min. And the micro-hardness first increased and then decreased over time. The main factors influencing microhardness of MAO coating are phase composition and surface structure. The micro-hardness increases linearly as coating thickness exhibits linear growth; and the micro-hardness decreases as coating thickness exhibits slow growth.
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