摘要
研究了用共沉淀法制备的，适于等离子喷涂的８ｗｔ％Ｙ２Ｏ３－ＺｒＯ２部分稳定氧化锆粉末的性能。用日本Ｄ／ＭＡＸ－１ＡＸＸ－射线衍射仪（ＸＲＤ）研究了粉末的相组成；用日本ＳＸ－４０扫描电镜（ＳＥＭ）观察了颗粒形貌和团聚状况；用日本Ｈ－６００分析电镜（ＳＴＥＭ）确定晶粒大小和化学组成；用英国激光粒度分布测定仪测定了粉末的粒度分布；用日本粉体综合测定仪测定了粉末的流动性。并探讨了所制粉末性能与制备工艺的关系。
The properties of 8wt%Y2O3-ZrO2(PSZ) powders for plasma-spraying prepared by coprecipitation were studied. Phase composition of powders was investigated by means of XRD. Morphology and state of agglomeration of the granular particles were observed by using SEM. The STEM was performed to determine grain size and chemical composition. Particle size distribution was measured by Laser-particle-size apparatus.Flowability of powders was tested by Powder-compies-characieristie apparatus. The relations between the properties and the fabrication technology were also investigated. Results showed that the powders had compositional homogeneity, large agglomeration size, ideal particles size distribution and high flowability. They can meet a plasma spraying criterion.
基金
国家"八.五"攻关项目
关键词
粉末
涂层
等离子喷涂
陶瓷
氧化锆
powders properties
partially stabilized zirconia
plasma spraying
