The effect of a carbon layer on the microstructural and mechanical properties of porous BN/Si3N4 ceramic brazed with a titanium-silicon filler

Y. L. Zhuang; T. S. Lin; S. J. Wang; P. He; D. P. Sekulic; D. C. Jia

doi:10.1016/j.jeurceramsoc.2017.11.043

The effect of a carbon layer on the microstructural and mechanical properties of porous BN/Si₃N₄ ceramic brazed with a titanium-silicon filler

Y. L. Zhuang
, T. S. Lin
, S. J. Wang
, P. He
, D. P. Sekulic
, D. C. Jia

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

The Ti₂₂Si₇₈ (wt.%) braze was used to bond porous BN/Si₃N₄ ceramic. The results revealed that the joint strength was low. In order to improve the joint strength, a carbon coated modification of the porous BN/Si₃N₄ substrate, achieved by the pyrolysis of phenol-formaldehyde resin was suggested. The thickness of carbon layer was controlled by the volume ratio of phenol-formaldehyde resin and methyl alcohol (R/M). The effect of the carbon layer on the microstructure and mechanical properties of the joint was examined. It was established that the maximum joint strength was achieved at the level of 80 MPa (as opposed to the uncoated joint with only 30 MPa) when R/M was 1:2, at the given brazing temperature. The improvement of the joint strength is attributed mainly to the formation of a SiC infiltration reaction layer, a significant population of SiC nanowires, as well as TiN_0.7C_0.3 and TiB₂ particles.

Original language	English
Pages (from-to)	1288-1298
Number of pages	11
Journal	Journal of the European Ceramic Society
Volume	38
Issue number	4
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2017.11.043
State	Published - Apr 2018

Bibliographical note

Publisher Copyright:
© 2017 Elsevier Ltd

Funding

This research was supported by National Natural Science Foundation of China . (NSFC, 51402068 , 51475103 ). The work of one of the authors (DPS) has been supported through the Distinguished Foreign Expert 1000 Plan professorship at the Harbin Institute of Technology. This research was supported by National Natural Science Foundation of China. (NSFC, 51402068, 51475103). The work of one of the authors (DPS) has been supported through the Distinguished Foreign Expert 1000 Plan professorship at the Harbin Institute of Technology.

Funders	Funder number
National Natural Science Foundation of China (NSFC)	51475103, 51402068

Keywords

Brazing
Carbon layer
Porous BN/SiN
Ti-Si filler

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

Access to Document

10.1016/j.jeurceramsoc.2017.11.043

Cite this

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title = "The effect of a carbon layer on the microstructural and mechanical properties of porous BN/Si3N4 ceramic brazed with a titanium-silicon filler",

abstract = "The Ti22Si78 (wt.\%) braze was used to bond porous BN/Si3N4 ceramic. The results revealed that the joint strength was low. In order to improve the joint strength, a carbon coated modification of the porous BN/Si3N4 substrate, achieved by the pyrolysis of phenol-formaldehyde resin was suggested. The thickness of carbon layer was controlled by the volume ratio of phenol-formaldehyde resin and methyl alcohol (R/M). The effect of the carbon layer on the microstructure and mechanical properties of the joint was examined. It was established that the maximum joint strength was achieved at the level of 80 MPa (as opposed to the uncoated joint with only 30 MPa) when R/M was 1:2, at the given brazing temperature. The improvement of the joint strength is attributed mainly to the formation of a SiC infiltration reaction layer, a significant population of SiC nanowires, as well as TiN0.7C0.3 and TiB2 particles.",

keywords = "Brazing, Carbon layer, Porous BN/SiN, Ti-Si filler",

author = "Zhuang, \{Y. L.\} and Lin, \{T. S.\} and Wang, \{S. J.\} and P. He and Sekulic, \{D. P.\} and Jia, \{D. C.\}",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier Ltd",

year = "2018",

month = apr,

doi = "10.1016/j.jeurceramsoc.2017.11.043",

language = "English",

volume = "38",

pages = "1288--1298",

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T1 - The effect of a carbon layer on the microstructural and mechanical properties of porous BN/Si3N4 ceramic brazed with a titanium-silicon filler

AU - Zhuang, Y. L.

AU - Lin, T. S.

AU - Wang, S. J.

AU - He, P.

AU - Sekulic, D. P.

AU - Jia, D. C.

PY - 2018/4

Y1 - 2018/4

N2 - The Ti22Si78 (wt.%) braze was used to bond porous BN/Si3N4 ceramic. The results revealed that the joint strength was low. In order to improve the joint strength, a carbon coated modification of the porous BN/Si3N4 substrate, achieved by the pyrolysis of phenol-formaldehyde resin was suggested. The thickness of carbon layer was controlled by the volume ratio of phenol-formaldehyde resin and methyl alcohol (R/M). The effect of the carbon layer on the microstructure and mechanical properties of the joint was examined. It was established that the maximum joint strength was achieved at the level of 80 MPa (as opposed to the uncoated joint with only 30 MPa) when R/M was 1:2, at the given brazing temperature. The improvement of the joint strength is attributed mainly to the formation of a SiC infiltration reaction layer, a significant population of SiC nanowires, as well as TiN0.7C0.3 and TiB2 particles.

AB - The Ti22Si78 (wt.%) braze was used to bond porous BN/Si3N4 ceramic. The results revealed that the joint strength was low. In order to improve the joint strength, a carbon coated modification of the porous BN/Si3N4 substrate, achieved by the pyrolysis of phenol-formaldehyde resin was suggested. The thickness of carbon layer was controlled by the volume ratio of phenol-formaldehyde resin and methyl alcohol (R/M). The effect of the carbon layer on the microstructure and mechanical properties of the joint was examined. It was established that the maximum joint strength was achieved at the level of 80 MPa (as opposed to the uncoated joint with only 30 MPa) when R/M was 1:2, at the given brazing temperature. The improvement of the joint strength is attributed mainly to the formation of a SiC infiltration reaction layer, a significant population of SiC nanowires, as well as TiN0.7C0.3 and TiB2 particles.

KW - Brazing

KW - Carbon layer

KW - Porous BN/SiN

KW - Ti-Si filler

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