航空发动机常用封严涂层的金相制备与显微组织检测技术  

Metallographic Preparation and Micro-Structure Testing Techniques of Abradable Sealing Coatings for Aeroengines

作　　者：张佳平[1,2] 袁福河[2] 王璐[2] 段德莉 张艺馨[2] 

机构地区：[1]中科院金属研究所,辽宁沈阳110086 [2]沈阳黎明航空发动机(集团)有限责任公司技术中心,辽宁沈阳110043

出　　处：《材料保护》2017年第1期68-72,共5页Materials Protection

摘　　要：目前对航空发动机封严涂层的检测技术研究十分欠缺,尤其是对封严涂层金相制样及显微检测评定技术的研究处于空白。通过对航空发动机常用的几种可磨耗封严涂层金相样品制备技术及截面显微组织评价技术的研究,确定了可磨耗封严涂层金相样品合适的制备技术及工艺参数以及可磨耗涂层组织中的各相形貌及相含量。试验结果表明:采用自动化制样系统和最佳制样参数才能够得到反映涂层真实显微组织结构的金相试样,研究的封严涂层相分析技术及典型图片,可以达到准确分析和评定热喷涂涂层质量的目的。Several metallographic preparation techniques and metallographic evaluation techniques for thermal spray coatings on their cross sec- tional morphologies were investigated. Moreover, the techniques and corresponding preparation parameters, as well as the phase morphology and content for the typical abradable coatings were established. Results demonstrated that metallographic specimens revealed the true micro- structures of the above coatings by means of an automatic metallographic preparation system and the optimized preparation parameters, and phase analyses techniques and typical pictures of the abradable sealing coatings could be used to analyze and assess the production qualities of the thermal sprayed coatings.

关 键 词：封严涂层 金相制备 热喷涂 显微组织检测 

分 类 号：V263[航空宇航科学与技术—航空宇航制造工程]