文章信息/Info

Title:

Research Progress on High-Temperature Protection Performance and Modification of Silicide Coatings on Refractory Metal Surfaces

文章編號(hào):

1674-3962(2025)09-0814-14

作者:

趙科遙; 汪欣; 梁浩然; 游才印

1. 西安理工大學(xué)材料科學(xué)與工程學(xué)院，陜西 西安 710048 2. 西北有色金屬研究院，陜西 西安 710016 3. 西安石油大學(xué)材料科學(xué)與工程學(xué)院, 陜西 西安 710065

Author(s):

ZHAO Keyao; WANG Xin; LIANG Haoran; YOU Caiyin

1. School of Materials Science and Engineering, Xi’an University of Technology,Xi’an 710048, China 2. Northwest Institute for Nonferrous Metal Research, Xi’an 710016, China et al.

關(guān)鍵詞:

難熔金屬; 硅化物涂層; 高溫抗氧化性能; 元素改性; 陶瓷顆粒摻雜改性

Keywords:

refractory metals;  silicide coating;  high-temperature oxidation resistance; elemental modification;  ceramic particle doping modification

分類(lèi)號(hào):

TG174.4

DOI:

10.7502/j.issn.1674-3962.202405002

文獻(xiàn)標(biāo)志碼:

A

摘要:

難熔金屬及其合金具有高熔點(diǎn)、良好的高溫力學(xué)性能和室溫加工性能等優(yōu)點(diǎn)，廣泛應(yīng)用于航空航天和核工業(yè)領(lǐng)域，但在高溫有氧環(huán)境中易發(fā)生“災(zāi)難性”氧化，導(dǎo)致難熔金屬及其合金的高溫力學(xué)性能快速下降甚至失效，因此需要在其表面制備高溫防護(hù)涂層，提升其高溫抗氧化性能。在適用于難熔金屬及其合金的眾多高溫防護(hù)涂層體系中，硅化物涂層應(yīng)用最為廣泛。概述了難熔金屬表面硅化物涂層的制備方法、高溫抗氧化性能、抗氧化機(jī)理以及失效機(jī)制；介紹了元素以及陶瓷顆粒摻雜改性的作用機(jī)理。經(jīng)摻雜改性的硅化物涂層體系具有更為優(yōu)異的高溫防護(hù)性能，能夠有效提升難熔金屬在高溫有氧環(huán)境中的服役溫度和服役壽命；在此基礎(chǔ)上，展望了難熔金屬表面硅化物涂層的發(fā)展方向。

Abstract:

Refractory metals and their alloys are widely used in the aerospace and nuclear industry due to their high melting point, good high-temperature mechanical properties and room temperature forming performance and so on. However,they are prone to “catastrophic” oxidation in the high-temperature oxidation environment, resulting in a rapid decrease in high-temperature mechanical properties or even failure of underlying refractory metals. Therefore, it is necessary to improve their high-temperature oxidation resistance by preparing high-temperature protective coatings. Among high-temperature protective coating systems, silicide coatings have the most widespread application. This investigation provided an overview of the preparation methods, high-temperature oxidation resistance, oxidation resistance mechanism and failure mechanism of silicide coatings on refractory metals. Furthermore, the mechanism of doping modification with elements and ceramic particles was introduced. The modified silicide coating had superior high-temperature oxidation protection performance, which could effectively improve the service temperature or service life of refractory metals in high�瞭emperature oxidation environments. On this basis, the development direction of silicide coatings on refractory metals was prospected.