Brazing SiO2f/SiO2 with TC4 alloy with the help of coating graphene

Jinghuang Lin; Jin Ba; Yifei Cai; Qiang Ma; Dalin Luo; Zeyu Wang; Junlei Qi; Jian Cao; Jicai Feng

doi:10.1016/j.vacuum.2017.09.010

Brazing SiO_2f/SiO₂ with TC4 alloy with the help of coating graphene

Jinghuang Lin
, Jin Ba
, Yifei Cai
, Qiang Ma
, Dalin Luo
, Zeyu Wang
, Junlei Qi^*
, Jian Cao
, Jicai Feng

^*Corresponding author for this work

School of Materials Science and Engineering

Harbin Institute of Technology

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

20 Scopus citations

Abstract

The joining of SiO_2f/SiO₂ to TC4 alloys suffers from the problems of poor wettability with AgCuTi, excessive Ti dissolving from TC4 and emergence of high residual stress among the joint. To solve these problems, an effective method by coating graphene on the SiO_2f/SiO₂ is developed. Wetting experiments confirm that contact angle notably reduces from 131° to 42.8° after coating rGO. Further, rGO react with Ti element from the brazing alloy and TC4 alloy, inhibiting the formation of excessive brittle reaction layer and in situ forming TiC reinforcement. The highest shear strength of SiO_2f/SiO₂-TC4 brazed joints was up to 39.2 MPa.

Original language	English
Pages (from-to)	241-244
Number of pages	4
Journal	Vacuum
Volume	145
DOIs	https://doi.org/10.1016/j.vacuum.2017.09.010
State	Published - Nov 2017

Keywords

Brazing
Carbon materials
Ceramic composites
Graphene
Surface
Wettability

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10.1016/j.vacuum.2017.09.010

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title = "Brazing SiO2f/SiO2 with TC4 alloy with the help of coating graphene",

abstract = "The joining of SiO2f/SiO2 to TC4 alloys suffers from the problems of poor wettability with AgCuTi, excessive Ti dissolving from TC4 and emergence of high residual stress among the joint. To solve these problems, an effective method by coating graphene on the SiO2f/SiO2 is developed. Wetting experiments confirm that contact angle notably reduces from 131° to 42.8° after coating rGO. Further, rGO react with Ti element from the brazing alloy and TC4 alloy, inhibiting the formation of excessive brittle reaction layer and in situ forming TiC reinforcement. The highest shear strength of SiO2f/SiO2-TC4 brazed joints was up to 39.2 MPa.",

keywords = "Brazing, Carbon materials, Ceramic composites, Graphene, Surface, Wettability",

author = "Jinghuang Lin and Jin Ba and Yifei Cai and Qiang Ma and Dalin Luo and Zeyu Wang and Junlei Qi and Jian Cao and Jicai Feng",

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

year = "2017",

month = nov,

doi = "10.1016/j.vacuum.2017.09.010",

language = "英语",

volume = "145",

pages = "241--244",

journal = "Vacuum",

issn = "0042-207X",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Brazing SiO2f/SiO2 with TC4 alloy with the help of coating graphene

AU - Lin, Jinghuang

AU - Ba, Jin

AU - Cai, Yifei

AU - Ma, Qiang

AU - Luo, Dalin

AU - Wang, Zeyu

AU - Qi, Junlei

AU - Cao, Jian

AU - Feng, Jicai

PY - 2017/11

Y1 - 2017/11

N2 - The joining of SiO2f/SiO2 to TC4 alloys suffers from the problems of poor wettability with AgCuTi, excessive Ti dissolving from TC4 and emergence of high residual stress among the joint. To solve these problems, an effective method by coating graphene on the SiO2f/SiO2 is developed. Wetting experiments confirm that contact angle notably reduces from 131° to 42.8° after coating rGO. Further, rGO react with Ti element from the brazing alloy and TC4 alloy, inhibiting the formation of excessive brittle reaction layer and in situ forming TiC reinforcement. The highest shear strength of SiO2f/SiO2-TC4 brazed joints was up to 39.2 MPa.

AB - The joining of SiO2f/SiO2 to TC4 alloys suffers from the problems of poor wettability with AgCuTi, excessive Ti dissolving from TC4 and emergence of high residual stress among the joint. To solve these problems, an effective method by coating graphene on the SiO2f/SiO2 is developed. Wetting experiments confirm that contact angle notably reduces from 131° to 42.8° after coating rGO. Further, rGO react with Ti element from the brazing alloy and TC4 alloy, inhibiting the formation of excessive brittle reaction layer and in situ forming TiC reinforcement. The highest shear strength of SiO2f/SiO2-TC4 brazed joints was up to 39.2 MPa.

KW - Brazing

KW - Carbon materials

KW - Ceramic composites

KW - Graphene

KW - Surface

KW - Wettability

UR - https://www.scopus.com/pages/publications/85029065626

U2 - 10.1016/j.vacuum.2017.09.010

DO - 10.1016/j.vacuum.2017.09.010

M3 - 文章

AN - SCOPUS:85029065626

SN - 0042-207X

VL - 145

SP - 241

EP - 244

JO - Vacuum

JF - Vacuum

ER -

Brazing SiO_2f/SiO₂ with TC4 alloy with the help of coating graphene

Abstract

Keywords

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