氧化铈稳定纳米氧化锆高温性能的研究  

Study on High-temperature Properties of Ceria Stable Nano-Zirconia Thermal Barrier Coating

作　　者：张鑫[1,2] 彭浩然[1,2] 张春鸣[1,2] 胡丹丹[1,2] 冀晓鹃[1,2] 章德铭[1,2] 任先京[1,2] 

机构地区：[1]北京矿冶研究总院,北京100160 [2]北京市工业部件表面强化与修复工程技术研究中心,北京102206

出　　处：《热喷涂技术》2013年第2期16-20,72,共6页Thermal Spray Technology

基　　金：国家863项目资助(2012AA03A512);国家科技支撑项目资助(2012BAE02B00)

摘　　要：等离子喷涂热障涂层技术广泛应用于航空发动机热端部件的高温防护。应用大气等离子喷涂法成功制备了纳米氧化铈氧化钇稳定的氧化锆(CYSZ)涂层,并与常规氧化钇稳定氧化锆(YSZ)涂层在1300℃下热处理10小时,研究高温对两种涂层性能的影响,与常规的YSZ涂层相比,CeO2的掺杂使涂层具有更高的稳定性。经过高温处理,CYSZ涂层的相结构没有发生明显变化。显微形貌结果表明,CYSZ涂层没有产生裂纹缺陷,涂层中纳米区域晶粒度随着温度的升高略有增大,这表明了纳米结构的CYSZ涂层具有更优异的高温稳定性。热循环氧化实验结果证明,CYSZ涂层具有更长的热循环寿命以及优异的高温抗氧化性能。Plasma sprayed thermal barrier coatings are suitable for thermal and hot corrosion protection of metal components in land-based turbineand diesel engines. In this work, nanostructured ceria-yttria-stabilized zirconia （CYSZ）coatings and conventional zirconia-8% yttria （YSZ） coatings were deposited by atmospheric plasma spraying and they were heat-treated at 1300℃ for 10h, in order to research effect of high-temperature on properties of coating. Compared with the conventional YSZ coating, CeO2 provided a high phase stabilization for zirconia, since little phase decomposition was observed after thermal aging, and the microstructure of the nanostructured CYSZ coating did not involve the cracks, except the particles of the ＂nanozones＂ increased after heat-treated, which proved the nanostructured CYSZ coating is more stable than conventional YSZ one. Thermal cyclic oxidation experiment proved nanostructured CYSZ coating had longer thermal cycling lifetime and exhibits the promising thermal cyclic oxidation resistance.

关 键 词：热障涂层 等离子喷涂 纳米CYSZ 高温性能 

分 类 号：TG174.4[金属学及工艺—金属表面处理]