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Acta Metall Sin  2019, Vol. 55 Issue (1): 87-100    DOI: 10.11900/0412.1961.2018.00292
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Overview: SiC/Al Interface Reaction and Interface Structure Evolution Mechanism
Feng QIU, Haotian TONG, Ping SHEN, Xiaoshuang CONG, Yi WANG, Qichuan JIANG()
Department of Materials Science and Engineering, Jilin University, Changchun 130025, China
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Feng QIU, Haotian TONG, Ping SHEN, Xiaoshuang CONG, Yi WANG, Qichuan JIANG. Overview: SiC/Al Interface Reaction and Interface Structure Evolution Mechanism. Acta Metall Sin, 2019, 55(1): 87-100.

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Abstract  

During the high-temperature melting process, Al is in full contact with SiC. The interface bonding properties of composites are closely related to the possibility and multi-directionality of interface reaction between them. A comprehensive understanding of the interfacial bonding, interfacial reaction, and interface structure between Al and SiC is of great significance for improving the material properties.There have been many researches on the wettability and interface reaction between Al or its alloys and SiC. However, there are still some differences and disputes on some issues, and the understanding of the true wettability of Al and SiC is not systematic enough. Reaction time and temperature have a great influence on the degree of interface reaction between Al and SiC, but there is still no systematic review on the specific relationship between reaction parameters and reaction degree. The addition of alloying elements can weaken the occurrence of interfacial reactions. However, under different reaction conditions, the relationship between the amount of alloying elements added and the reaction degree, and the mechanism of action of alloying elements on interface reaction have not been clearly reported. This article systematically reviews the interfacial reactions, interfacial products and reaction product evolution rules and mechanisms under specific reaction conditions, Al and the addition of different alloying elements to the SiC interface and interface wetting behavior. From the aspects of interfacial wetting, interfacial reaction and interfacial product, this article provided experimental data, theoretical references for the selection of process parameters during the preparation of composite.
Key words:  SiC/Al      aluminum matrix composite      interfacial reaction      interface structure      wetting behavior     
Received:  29 June 2018     
ZTFLH:  TB333  
Fund: Supported by National Key Research and Development Program of China (No.2017YFB0703101)
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Feng QIU
Haotian TONG
Ping SHEN
Xiaoshuang CONG
Yi WANG
Qichuan JIANG

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https://www.ams.org.cn/EN/10.11900/0412.1961.2018.00292     OR     https://www.ams.org.cn/EN/Y2019/V55/I1/87

Fig.1  Schematic of Si—C diatomic structure and 6H-SiC crystal
Fig.2  Variations in contact angle with time for molten Al on the Si-terminated and C-terminated 6H-SiC single crystals at 973~1173 K[21]
Fig.3  Comparison of the variations in contact angles for pure Al on the SiC and SiO2 substrates at 1173 K[20]
Fig.4  Comparison of experimental results (at 1173 K) and results calculated (at 1073 K) by Fang[49] for Wa in the Al-Si/SiC system (Wa—work of adhesion)
Fig.5  Comparison of experimental results (at 1173 K) and results calculated (at 1073 K) by Fang[49] for Wa in the Al-Cu/SiC system
Fig.6  Comparison of experimental results (at 1173 K) and results calculated (at 1073 K) by Fang[49] for Wa in the Al-Mg/SiC (a) and Al-Mg/SiCox (b) systems
Fig.7  Comparison of experimental results (at 1173 K) and results calculated (at 1073 K) by Fang[49] for Wa in the Al-Ti/SiC system
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