文章信息/Info

Title:

Research Progress on Environmental Barrier Coatings Materials for Ceramic Matrix Composites

文章編號:

1674-3962(2021)04-0257-10

作者:

趙春玲1; 楊博2; 李闊1; 李廣榮2; 趙宇1; 邸士雄1; 李璞1; 楊冠軍2

（1. 中國航發(fā)湖南動力機械研究所，湖南 株洲 412002）（2. 西安交通大學(xué) 金屬材料強度國家重點實驗室，陜西 西安 710049）

Author(s):

ZHAO Chunling1;  YANG Bo2;  LI Kuo1;  LI Guangrong2;  ZHAO Yu1;  DI Shixiong1;  LI Pu1;  YANG Guanjun2

（1. Hunan Power Machinery Research Institute, Aero Engine Corporation of China, Zhuzhou 412002, China）（2. State Key Laboratory for Mechanical Behavior of Materials, Xi�餫n Jiaotong University, Xi�餫n 710049, China）

關(guān)鍵詞:

環(huán)境障涂層; SiCf/SiC復(fù)合材料; 水氧腐蝕機制; 耐水氧腐蝕性能

Keywords:

environmental barrier coatings; SiCf/SiC composites; water vapor corrosion mechanism;  water vapor corrosion resistance

分類號:

TQ174.75+8.16；V23

DOI:

10.7502/j.issn.1674-3962.202101005

文獻(xiàn)標(biāo)志碼:

A

摘要:

隨著新一代航空發(fā)動機推重比的不斷提升，其內(nèi)部燃?xì)鉁囟纫呀?jīng)遠(yuǎn)遠(yuǎn)超過傳統(tǒng)高溫合金的承溫極限，因此亟待研發(fā)新材料來滿足先進航空發(fā)動機的發(fā)展需求。SiCf/SiC陶瓷基復(fù)合材料具有優(yōu)異的高溫力學(xué)性能和高溫抗氧化性能，且其密度較低，是下一代高性能航空發(fā)動機熱端部件的理想結(jié)構(gòu)材料。但是，SiCf/SiC材料在實際服役環(huán)境中同樣面臨著嚴(yán)重的氧化腐蝕問題，因此需要使用能夠阻隔水氧介質(zhì)的環(huán)境障涂層（EBCs）來提高SiCf/SiC材料的耐腐蝕性能，進而延長航空發(fā)動機熱端部件的服役壽命。在闡明SiCf/SiC材料水氧腐蝕機制的基礎(chǔ)上，進一步總結(jié)了EBCs的設(shè)計原則和發(fā)展歷程，并重點比較了各種涂層材料體系的優(yōu)缺點及性能差異，為未來先進航空發(fā)動機陶瓷基復(fù)合材料熱端部件用EBCs材料的研制提供借鑒。

Abstract:

With the development of advanced aero-engine, the continuous increasement of thrust-weight ratio results in much higher working temperatures, which is more than the temperature limitation of traditional superalloys. Therefore, it is urgent to develop new materials to replace superalloys. Owing to the excellent high-temperature mechanical performance, high-temperature oxidation resistance and low density, SiCf/SiC ceramic matrix composite is regarded as an ideal candidate for structural materials applied in next-generation aero-engine. However, SiCf/SiC materials also faces serious problems of oxidation corrosion in actual service environment. In order to improve the corrosion resistance of SiCf/SiC materials, it is necessary to prepare environmental barrier coatings (EBCs) on its surface to prevent water and oxygen medium, so as to prolong the service lifetime of hot-sections in aero-engine. The water vapor corrosion mechanism of SiCf/SiC materials was summarized in this paper. Subsequently, the design principles and development progress of EBCs were reviewed. Moreover, advantages and disadvantages of different EBCs materials were compared. All these would provide a fundamental reference for the development of EBCs materials in future application of aero-engine.