陶瓷基复合材料构件内嵌孔加工工艺研究进展  

Research progress on machining process of embedded holes in ceramic-matrix composite components

作　　者：罗潇 刘小冲[2] 曾雨琪 李坚 徐友良 李龙彪[3] LUO Xiao;LIU Xiaochong;ZENG Yuqi;LI Jian;XU Youliang;LI Longbiao(Hunan Aviation Powerplant Research Institute,Aero Engine Corporation of China,Zhuzhou 412000,China;School of Materials Science and Engineering,Northwestern Polytechnical University,Xi'an 710072,China;College of Civil Aviation,Nanjing University of Aeronautics and Astronautics,Nanjing 211106,China)

机构地区：[1]中国航发湖南动力机械研究所,株洲412000 [2]西北工业大学材料学院,西安710072 [3]南京航空航天大学民航学院,南京211106

出　　处：《复合材料学报》2024年第8期3987-4003,共17页Acta Materiae Compositae Sinica

基　　金：中国航发自主创新专项资金(ZZCX-2017-016)。

摘　　要：陶瓷基复合材料是一种典型的难加工材料,除了各向异性的特点外,其硬度仅次于金刚石和立方氮化硼。航空发动机热端部件内嵌孔(气膜孔等)是陶瓷基复合材料部件的基本结构,对陶瓷基复合材料构件制备成型和服役性能的发挥具有重要意义。本文给出了陶瓷基复合材料热端部件内嵌孔的分类及用于加工陶瓷基复合材料内嵌孔的方法,包括常规机械加工方法、超声振动辅助加工方法、激光加工方法等,阐述了上述加工方法的加工原理、工艺特征、工艺参数的选取及加工缺陷特征、形成机制等,给出了不同直径、深径比陶瓷基复合材料内嵌孔加工工艺的建议。Ceramic-matrix composites(CMCs)are typical difficult-to-machine materials,which possess great hardness-second only to diamond and cubic boron nitride-and anisotropy.The fundamental structure of CMCs parts in aeroengines is the embedded holes(air film holes,etc.)in the hot-section components.These holes are crucial for the preparation and molding of CMCs components as well as the service life.The categorization of embedded holes in hot-section CMCs components is given in this paper.The processing principles,process characteristics,selection of process parameters,characteristics of the processing defects and formation mechanism,etc.,are all determined by analyzing the methods used for processing CMCs embedded holes,including conventional mechanical processing methods,ultrasonic vibration-assisted processing methods,laser processing methods,etc.Recommendations for the processing of CMCs embedded holes with different diameters and depth-to-diameter ratios are also provided.

关 键 词：陶瓷基复合材料 内嵌孔 加工方法 机械加工 超声振动辅助加工 激光加工 

分 类 号：TB332[一般工业技术—材料科学与工程]