空心涡轮叶片凝胶注模陶瓷浆料的设计与制备  

Design and preparation of gel-casting ceramic slurry for gas turbine blades

作　　者：李奕宁[1] 鲁中良[1] 李振发[1] 李涤尘[1] 姜博[1] 

机构地区：[1]西安交通大学机械制造系统工程国家重点实验室,西安710049

出　　处：《材料科学与工艺》2013年第6期54-59,共6页Materials Science and Technology

基　　金：国家重点基础研究发展计划资助项目(2013CB035703);国家自然科学基金资助项目(51005177);中央高校基本科研业务费专项资金资助项目

摘　　要：为获得较低的黏度、较好流动性以及高固相含量的陶瓷浆料,采用同轴圆筒旋转黏度计,测试了不同配方双峰级配电熔刚玉粉体浆料的表观黏度,研究了粉体粒径、颗粒形貌以及级配比例对浆料流动性和固相含量的影响规律.研究表明:粗细颗粒的大粒径比、规则球形、宽粒度分布有利于制备低黏度高固相含量的陶瓷浆料.成功制备了表观黏度仅为0.411 Pa·s、固相含量为63%的陶瓷浆料,制备的陶瓷铸型在1 300℃下的强度大于18 MPa,烧成收缩率小于1%.To obtain the ceramic slurry with low viscosity, good fluidity and high solid content, cylinder rotating viscometer was used to measure apparent viscosity of different bimodal alumina ceramic slunT, and the influences of powder particle size, shape and grade ratio on slurry fluidity and solid content were studied. The results show that large powder particle size ratio, regular sphere and large distribution of particle size make it more convenient to fabricate ceramic slurry with low viscosity and high solid content. The ceramic slurry with apparent viscosity of 0. 411 Pa-s, solid loading of 63% was successfully prepared, which could fully fill a jet hole cooling structure with the diameter of 0.7 mm. The strength of the ceramic mold is bigger than 18 MPa under 1 300℃ , with shrinkage after sintering less than 1%.

关 键 词：空心涡轮叶片 凝胶注模 陶瓷浆料 黏度 固相含量 

分 类 号：TB321[一般工业技术—材料科学与工程]