陶瓷基复合材料可磨耗环境障涂层制备及性能

V261.93%TG174.4; 随着碳化硅陶瓷基复材制备的涡轮外环的逐步应用,与其匹配的可磨耗涂层技术需求迫切.本工作采用大气等离子喷涂技术,制备4层结构的BSAS(Ba0.75Sr0.25Al2Si2O8)-聚酯基可磨耗环境障涂层(A/EBCs),探究工艺参数对可磨耗面层孔隙率的影响规律以及涂层在1300℃下的相结构和组织演变.利用X射线衍射仪(XRD)、扫描电子显微镜(SEM)、能谱仪(EDS)、透射电镜(TEM)对涂层相结构、微观组织及成分进行分析表征.结果表明:BSAS-聚酯基可磨耗面层的孔隙率为 26.4％～36.8％,BSAS-聚酯粒子温度敏感的参量是主气(氩气)流量、辅气(氢气...

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Published in航空材料学报 Vol. 44; no. 3; pp. 82 - 94
Main Authors 袁世峰, 郭婧, 郭孟秋, 赵春玲, 崔永静, 焦健
Format Journal Article
LanguageChinese
Published 中国航发湖南动力机械研究所,湖南株洲 412002%中国航发北京航空材料研究院,北京 100095 01.06.2024
Subjects
碳化硅陶瓷基复合材料
high temperature performance
abradable environmental barrier coating(A/EBCs)
可磨耗环境障涂层
高温性能
BSAS
等离子喷涂
plasma spraying
silicon carbide ceramic matrix composites(SiC-CMCs)
Online AccessGet full text
ISSN1005-5053
DOI10.11868/j.issn.1005-5053.2023.000185

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Abstract V261.93%TG174.4; 随着碳化硅陶瓷基复材制备的涡轮外环的逐步应用,与其匹配的可磨耗涂层技术需求迫切.本工作采用大气等离子喷涂技术,制备4层结构的BSAS(Ba0.75Sr0.25Al2Si2O8)-聚酯基可磨耗环境障涂层(A/EBCs),探究工艺参数对可磨耗面层孔隙率的影响规律以及涂层在1300℃下的相结构和组织演变.利用X射线衍射仪(XRD)、扫描电子显微镜(SEM)、能谱仪(EDS)、透射电镜(TEM)对涂层相结构、微观组织及成分进行分析表征.结果表明:BSAS-聚酯基可磨耗面层的孔隙率为 26.4％～36.8％,BSAS-聚酯粒子温度敏感的参量是主气(氩气)流量、辅气(氢气)流量和喷涂距离,速度敏感的参量是主气(氩气)流量;其中主气(氩气)流量同时对BSAS-聚酯的粒子温度和速度具有反向影响作用.该可磨耗面层在1300℃高温氧化300 h保持单斜相结构,组织和成分稳定,局部析出球状非晶氧化硅颗粒.采用高温高速刮削实验对涂层可磨耗性能进行评价,涂层表面发现纳米高温合金微粒黏附,叶片高度磨损比(IDR)为20％,达到可磨耗封严涂层使用要求.
AbstractList V261.93%TG174.4; 随着碳化硅陶瓷基复材制备的涡轮外环的逐步应用,与其匹配的可磨耗涂层技术需求迫切.本工作采用大气等离子喷涂技术,制备4层结构的BSAS(Ba0.75Sr0.25Al2Si2O8)-聚酯基可磨耗环境障涂层(A/EBCs),探究工艺参数对可磨耗面层孔隙率的影响规律以及涂层在1300℃下的相结构和组织演变.利用X射线衍射仪(XRD)、扫描电子显微镜(SEM)、能谱仪(EDS)、透射电镜(TEM)对涂层相结构、微观组织及成分进行分析表征.结果表明:BSAS-聚酯基可磨耗面层的孔隙率为 26.4％～36.8％,BSAS-聚酯粒子温度敏感的参量是主气(氩气)流量、辅气(氢气)流量和喷涂距离,速度敏感的参量是主气(氩气)流量;其中主气(氩气)流量同时对BSAS-聚酯的粒子温度和速度具有反向影响作用.该可磨耗面层在1300℃高温氧化300 h保持单斜相结构,组织和成分稳定,局部析出球状非晶氧化硅颗粒.采用高温高速刮削实验对涂层可磨耗性能进行评价,涂层表面发现纳米高温合金微粒黏附,叶片高度磨损比(IDR)为20％,达到可磨耗封严涂层使用要求.
Abstract_FL With the application of shrouds made of silicon carbide ceramic matrix composite(SiC-CMCs),the abradable coating technology suitable for SiC-CMCs is urgently needed.The four-layer structure of BSAS(Ba0.75Sr0.25Al2Si2O8)-polyester-based abradable environmental barrier coating(A/EBCs)was prepared by atmospheric plasma spraying.The influence of process parameters on the porosity and the structural evolution of the layer at 1300℃ were investigated.The phase structure,microstructure and coating composition were characterized by XRD,SEM,EDS and TEM respectively.The results show that the porosity of BSAS-polyester abradable top layer is 26.4％-36.8％.And the temperature-sensitive parameters of BSAS-polyester particles are primary gas(argon)flow,second gas(hydrogen)flow and spraying distance.In contrast,the speed-sensitive parameters are primary gas(argon)flow.The primary gas(argon)flow has the opposite effect on the particle temperature and velocity of the BSAS-polyester.The abradable surface layer is oxidized at 1300℃for 300 h and maintains monoclinic phase structure,stable stucture and composition,and locally precipitates spherical amorphous silicon oxide particles.Furthermore,the coating abradability was evaluated by high-temperature and high-speed scraping test.Nano-scale Ni-based superalloy particles adhesion on the surface of the coating are found,and the blade incursion depth ratio(IDR)is 20％,which meets the requirements of the abradable sealing coating.
Author 袁世峰
焦健
郭孟秋
郭婧
赵春玲
崔永静
AuthorAffiliation 中国航发湖南动力机械研究所,湖南株洲 412002%中国航发北京航空材料研究院,北京 100095
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Author_FL JIAO Jian
CUI Yongjing
GUO Jing
GUO Mengqiu
ZHAO Chunling
YUAN Shifeng
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DocumentTitle_FL Preparation and performance of abradable environmental barrier coating on ceramic matrix composites
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Keywords 碳化硅陶瓷基复合材料
high temperature performance
abradable environmental barrier coating(A/EBCs)
可磨耗环境障涂层
高温性能
BSAS
等离子喷涂
plasma spraying
silicon carbide ceramic matrix composites(SiC-CMCs)
Language Chinese
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PublicationTitle 航空材料学报
PublicationTitle_FL Journal of Aeronautical Materials
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Publisher 中国航发湖南动力机械研究所,湖南株洲 412002%中国航发北京航空材料研究院,北京 100095
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Title 陶瓷基复合材料可磨耗环境障涂层制备及性能
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