北京交通大学学报2013，Vol.37Issue(2)：114-118,5.
添加K2ZrF6对钛合金微弧氧化膜层组织结构的影响
Effects of K2ZrF6 additive on microstructure of micro-arc coatings fabricated on TA15 alloy
摘要
Abstract
Zr-containing ceramic coatings were fabricated on TA15 alloy by micro-arc oxidation(MAO) using K2ZrF6 as a special additive in NaAlO2-Na3PO4 base electrolyte. The effects of K2ZrF6 addition on microstructure, element distribution and phase composition of ceramic coating were analyzed by XRD, SEM and EDS, respectively. The thermal shock resistance and heat resistance of the coating formed on TA15 alloy in different electrolyte were investigated. The results show that K2ZrF6 addition can increase the MAO rate and significantly alter the microstructure of ceramic coatings. Surface of MAO coatings fabricated in Zr-containing electrolyte becomes relatively smooth. Compared with the coating formed in Zr-free electrolyte, a large amount of Zr element is found in the coating formed in Zr-containing. Two main phases, Al2TiO5 and Rutile-TiO2 are contained in Zr-free coating. In contrast, t-ZrO2 and m-ZrO2, with excellent heat resistance, are found in Zr-containing coating. Experimental results also demonstrate that the thermal shock resistance of the Zr-containing coating is lower but its heat resistance is improved.关键词
钛合金/微弧氧化/陶瓷涂层/氧化锆Key words
titanium alloy/ micro-arc oxidation/ ceramic coating/ zirconia分类
矿业与冶金引用本文复制引用
夏伶勤,韩建民,李卫京,杨智勇..添加K2ZrF6对钛合金微弧氧化膜层组织结构的影响[J].北京交通大学学报,2013,37(2):114-118,5.基金项目
中央高校基本科研业务费专项资金资助(2011JBM098) （2011JBM098）
