文章信息/Info

Title:

Progress in Application of Ultra-High Temperature Silicide Coatings

文章編號:

1674-3962(2025)05-0464-10

作者:

魏濤濤; 董琳; 楊冠軍; 劉梅軍

西安交通大學(xué) 金屬材料強(qiáng)度國家重點(diǎn)實(shí)驗(yàn)室， 陜西 西安 710049

Author(s):

WEI Taotao;  DONG Lin;  YANG Guanjun;  LIU Meijun

State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an 710049, China

關(guān)鍵詞:

硅化物涂層; 超高溫服役; 氧化失效機(jī)制; 復(fù)合涂層; 改性

Keywords:

silicide coating;  ultra-high temperature service;  oxidation failure mechanism;  composite coating;  modification

分類號:

TG174.453

DOI:

10.7502/j.issn.1674-3962.202306007

文獻(xiàn)標(biāo)志碼:

A

摘要:

超高溫硅化物涂層由于具有良好的高溫抗氧化能力，目前已廣泛應(yīng)用于高溫服役構(gòu)件，如航空器、航天器、火箭、導(dǎo)彈等。但由于服役時(shí)間和溫度的增長，硅化物涂層抗氧化性能逐漸下降并最終發(fā)生失效。概述了硅化物涂層的體系、制備方法、失效機(jī)制和改性方法的研究進(jìn)展。硅化物涂層體系可分為Si-Cr-X基硅化物涂層體系和難熔金屬硅化物涂層體系。制備方法多樣，常用的為料漿燒結(jié)法和包埋滲法。失效機(jī)制主要為氧化、熱膨脹系數(shù)不匹配和熱擴(kuò)散，可以采用多組元成分設(shè)計(jì)、多層梯度結(jié)構(gòu)設(shè)計(jì)和多種制備方法組合優(yōu)化對涂層進(jìn)行改性。新一代航空器要求其高溫部件能在超高溫（≥1800 ℃）下長時(shí)間服役，但目前的硅化物涂層難以滿足該條件，因此未來發(fā)展方向?yàn)檠兄瞥�高溫條件下服役的復(fù)合硅化物涂層。

Abstract:

Ultra-high temperature silicide coating has been widely used in high-temperature service components, such as aircraft, spacecraft, rockets, missiles, and so on, due to its excellent oxidation resistance at high temperature. However, with the increase of service time and temperature, the oxidation resistance of silicide coating decreases and eventually leads to its failure. In this paper, the research progress of silicide coating systems, preparation methods, failure mechanism and modification methods are reviewed. Silicide coating system can be divided into Si-Cr-X based silicide coating system and refractory metal silicide coating system. Commonly used preparation methods are slurry sintering method and powder infiltration method. The failure mechanism is mainly oxidation, thermal expansion coefficient mismatch and thermal diffusion. The coating can be modified by multi-component design, multi-layer gradient structure design and optimization of multiple preparation methods. The new generation of aircraft requires its high-temperature components to be able to serve for a long time at ultra-high temperature (≥1800 ℃), but the current silicide coating cannot meet this condition. Therefore, the future development direction is to develop composite silicide coating for service under ultra-high temperature conditions.