Effect of interfacial reaction products on the wettability and interfacial strength of B<sub>4</sub>C/Al composites

GUO Wenbo; HU Qiyao; XIAO Peng

doi:10.13801/j.cnki.fhclxb.20210707.005

Volume 39 Issue 6

Jun. 2022

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GUO Wenbo, HU Qiyao, XIAO Peng. Effect of interfacial reaction products on the wettability and interfacial strength of B4C/Al composites[J]. Acta Materiae Compositae Sinica, 2022, 39(6): 2941-2948. doi: 10.13801/j.cnki.fhclxb.20210707.005

Citation:

GUO Wenbo, HU Qiyao, XIAO Peng. Effect of interfacial reaction products on the wettability and interfacial strength of B₄C/Al composites[J]. Acta Materiae Compositae Sinica, 2022, 39(6): 2941-2948. doi: 10.13801/j.cnki.fhclxb.20210707.005

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Effect of interfacial reaction products on the wettability and interfacial strength of B₄C/Al composites

doi: 10.13801/j.cnki.fhclxb.20210707.005

School of Aeronautical Manufacturing Engineering, Nanchang Hangkong University, Nanchang 330063, China

Received Date: 2021-05-31
Accepted Date: 2021-06-30
Rev Recd Date: 2021-06-25

Available Online: 2021-07-08

Publish Date: 2022-06-01

Abstract

Abstract

The B₄C/Al composites were prepared by stirring casting method. The method of experimental analysis combined with first-principles calculations was used to explore the influence mechanism of the interfacial reaction products Al₃BC and TiB₂ on the wettability of B₄C/Al composite particles and the interfacial bonding strength. The results show that when the interface reaction product is Al₃BC, the wettability of B₄C particles has not been substantially improved, particle agglomeration still exists, and the interface bonding is poor. Excessive interface reaction makes the decomposition and loss of B₄C particles serious, resulting in insignificant strengthening effect of B₄C particles. When the interface reaction product is TiB₂ by adding Ti element, the particle wettability is significantly improved, the agglomeration of B₄C particles is significantly reduced, the interface bonding strength is higher, and the mechanical properties are significantly improved. The Al(111)/TiB₂(0001) interface adhesion work of different terminals is greater than that of Al(111)/B₄C(0001), indicating that the interface reaction product TiB₂ can improve the wettability of B₄C particles. The interface reaction product Al₃BC is very limited in improving the wettability of B₄C particles. A mixed covalent/metallic bond is formed on the interface of Al(111)/Al₃BC(0001) and Al(111)/TiB₂(0001). The chemical bonding strength on the Al(111)/TiB₂(0001) interface is greater, and the interface bonding strength is correspondingly greater.
- B₄C/Al composite,
- first principles,
- wettability,
- mechanical property,
- adhesion work,
- partial density of states (PDOS)
Long Abstrsct
Innovation Points

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References(25)

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