SiCN@Fe复合吸波涂层高温原位拉伸测试分析

doi:10.11896/cldb.23050156

材料导报

2025, Vol. 39

Issue (3): 23050156-5 https://doi.org/10.11896/cldb.23050156

金属与金属基复合材料

SiCN@Fe复合吸波涂层高温原位拉伸测试分析

蒋曜年¹, 刘欢¹, 钟镇涛¹, 何泽乾¹, 毛卫国^1,*, 戴翠英¹, 张有为², 刘平桂²

1 长沙理工大学材料科学与工程学院,长沙 410114
2 中国航发北京航空材料研究院隐身与涂料所,北京 100095

Analysis of SiCN@Fe Composite Wave Absorbing Coatings for High Temperature In-situ Tensile Testing

JIANG Yaonian¹, LIU Huan¹, ZHONG Zhentao¹, HE Zeqian¹, MAO Weiguo^1,*, DAI Cuiying¹, ZHANG Youwei², LIU Pinggui²

1 College of Materials Science and Engineering, Changsha University of Science and Technology, Changsha 410114, China
2 Stealth & Coatings Institute, AECC Beijing Institute of Aeronautical Materials, Beijing 100095, China

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摘要对SiCN@Fe复合吸波涂层在不同温度下的力学性能进行原位表征分析,为评估该涂层在应用环境下的适配性提供了重要的参考依据。本工作采用空气喷涂法制备了SiCN@Fe复合吸波涂层,采用基于数字图像相关技术的材料高温力学性能原位测试系统表征了SiCN@Fe复合吸波涂层的拉伸断裂行为。结果表明,随温度的升高,涂层的弹性模量逐渐降低,由室温下的54 GPa下降至600 ℃下的47 GPa;涂层的拉伸强度和断裂韧性明显提高,分别由室温下的52.81 MPa和4.65 MPa·m^1/2提升至600 ℃下的178 MPa和6.54 MPa·m^1/2。SiCN非晶陶瓷在高温环境下的韧性转变和Fe粉填料稳定的骨架结构是SiCN@Fe复合吸波涂层具有良好的拉伸强度和断裂韧性的主要原因。

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	蒋曜年
	刘欢
	钟镇涛
	何泽乾
	毛卫国
	戴翠英
	张有为
	刘平桂

关键词: SiCN聚合物衍生非晶陶瓷吸波涂层数字图像相关技术高温拉伸

Abstract: In-situ characterization of the mechanical properties of SiCN@Fe composite wave absorbing coating at different temperatures provides an important reference for the application prospects and environment of the coatings. In this work, SiCN@Fe composite wave absorbing coating was prepared by air spraying method, and it's tensile fracture behaviour was characterized by an in-situ test system based on digital image correlation technique. The results showed that, with the increasing of temperature, the elasticity modulus of the coating decreased from 54 GPa at room temperature to 47 GPa at 600 ℃, while the tensile strength and fracture toughness increased significantly from 52.81 MPa and 4.65 MPa·m^1/2 at room temperature to 178 MPa and 6.54 MPa·m^1/2 at 600 ℃, respectively. The toughness transformation of SiCN amorphous ceramics in high temperature environment and the stable skeleton structure of Fe powder filler are the main reasons for the good tensile strength and fracture toughness of SiCN@Fe composite wave absorbing coating.

Key words: SiCN polymer derived ceramics microwave absorbing coatings digital image related technology high temperature stretching

出版日期: 2025-02-10 发布日期: 2025-02-05

ZTFLH:

TB32

基金资助: 国家科技重大专项(J2019-VI-0017-0132);国家重点研发计划(2021YFB3702304-4);国防基础科研项目(WDZC20195500501)

通讯作者: *毛卫国,现任长沙理工大学二级教授,博士研究生导师。长期从事高端装备先进涂层制备及性能评价。ssamao@126.com

作者简介: 蒋曜年,2019年7月于北华航天工业学院获得工学学士学位。现为长沙理工大学材料科学与工程学院硕士研究生,目前主要研究领域为表面防护材料及应用技术。

引用本文:

蒋曜年, 刘欢, 钟镇涛, 何泽乾, 毛卫国, 戴翠英, 张有为, 刘平桂. SiCN@Fe复合吸波涂层高温原位拉伸测试分析[J]. 材料导报, 2025, 39(3): 23050156-5.
JIANG Yaonian, LIU Huan, ZHONG Zhentao, HE Zeqian, MAO Weiguo, DAI Cuiying, ZHANG Youwei, LIU Pinggui. Analysis of SiCN@Fe Composite Wave Absorbing Coatings for High Temperature In-situ Tensile Testing. Materials Reports, 2025, 39(3): 23050156-5.

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http://www.mater-rep.com/CN/10.11896/cldb.23050156 或 http://www.mater-rep.com/CN/Y2025/V39/I3/23050156

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