Plasma treatment on SiO2f/SiO2 composites for their assisted brazing with Nb

Jun Lei Qi; Jing Huang Lin; Jia Le Guo; Yu Lin Liu; Jian Cao; Li Xia Zhang; Ji Cai Feng

doi:10.1016/j.vacuum.2015.10.025

Plasma treatment on SiO_2f/SiO₂ composites for their assisted brazing with Nb

Jun Lei Qi^*
, Jing Huang Lin
, Jia Le Guo
, Yu Lin Liu
, Jian Cao
, Li Xia Zhang
, Ji Cai Feng

^*Corresponding author for this work

School of Materials Science and Engineering

Harbin Institute of Technology

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

22 Scopus citations

Abstract

Brazing SiO_2f/SiO₂ composites with metals is often associated with the problems of poor wettability with active brazing alloy and poor mechanical properties of joints. To overcome these problems, we report the plasma treatment on SiO_2f/SiO₂ by PECVD for their assisted brazing with Nb. The O-Si-O bonding changed into Si-C bonding on the surface of SiO_2f/SiO₂ by the plasma treatment can improve the wettability of Ag-Cu-Ti brazing alloy on SiO_2f/SiO₂. Furthermore, SiO_2f/SiO₂ after the plasma treatment can contribute to the infiltration of brazing alloy into SiO_2f/SiO₂ to form the pinning structure and reducing the residual stress, which could strengthen the joint. The obtained joint has a high shear strength of 60.5 MPa, approximately 11 times higher than that without plasma treatment.

Original language	English
Pages (from-to)	136-139
Number of pages	4
Journal	Vacuum
Volume	123
DOIs	https://doi.org/10.1016/j.vacuum.2015.10.025
State	Published - 1 Jan 2016

Keywords

Brazing
Infiltration
Plasma treatment
Wettability

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10.1016/j.vacuum.2015.10.025

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@article{eacd1058df5c40918f0e663dc6d0b6a8,

title = "Plasma treatment on SiO2f/SiO2 composites for their assisted brazing with Nb",

abstract = "Brazing SiO2f/SiO2 composites with metals is often associated with the problems of poor wettability with active brazing alloy and poor mechanical properties of joints. To overcome these problems, we report the plasma treatment on SiO2f/SiO2 by PECVD for their assisted brazing with Nb. The O-Si-O bonding changed into Si-C bonding on the surface of SiO2f/SiO2 by the plasma treatment can improve the wettability of Ag-Cu-Ti brazing alloy on SiO2f/SiO2. Furthermore, SiO2f/SiO2 after the plasma treatment can contribute to the infiltration of brazing alloy into SiO2f/SiO2 to form the pinning structure and reducing the residual stress, which could strengthen the joint. The obtained joint has a high shear strength of 60.5 MPa, approximately 11 times higher than that without plasma treatment.",

keywords = "Brazing, Infiltration, Plasma treatment, Wettability",

author = "Qi, \{Jun Lei\} and Lin, \{Jing Huang\} and Guo, \{Jia Le\} and Liu, \{Yu Lin\} and Jian Cao and Zhang, \{Li Xia\} and Feng, \{Ji Cai\}",

year = "2016",

month = jan,

day = "1",

doi = "10.1016/j.vacuum.2015.10.025",

language = "英语",

volume = "123",

pages = "136--139",

journal = "Vacuum",

issn = "0042-207X",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Plasma treatment on SiO2f/SiO2 composites for their assisted brazing with Nb

AU - Qi, Jun Lei

AU - Lin, Jing Huang

AU - Guo, Jia Le

AU - Liu, Yu Lin

AU - Cao, Jian

AU - Zhang, Li Xia

AU - Feng, Ji Cai

PY - 2016/1/1

Y1 - 2016/1/1

N2 - Brazing SiO2f/SiO2 composites with metals is often associated with the problems of poor wettability with active brazing alloy and poor mechanical properties of joints. To overcome these problems, we report the plasma treatment on SiO2f/SiO2 by PECVD for their assisted brazing with Nb. The O-Si-O bonding changed into Si-C bonding on the surface of SiO2f/SiO2 by the plasma treatment can improve the wettability of Ag-Cu-Ti brazing alloy on SiO2f/SiO2. Furthermore, SiO2f/SiO2 after the plasma treatment can contribute to the infiltration of brazing alloy into SiO2f/SiO2 to form the pinning structure and reducing the residual stress, which could strengthen the joint. The obtained joint has a high shear strength of 60.5 MPa, approximately 11 times higher than that without plasma treatment.

AB - Brazing SiO2f/SiO2 composites with metals is often associated with the problems of poor wettability with active brazing alloy and poor mechanical properties of joints. To overcome these problems, we report the plasma treatment on SiO2f/SiO2 by PECVD for their assisted brazing with Nb. The O-Si-O bonding changed into Si-C bonding on the surface of SiO2f/SiO2 by the plasma treatment can improve the wettability of Ag-Cu-Ti brazing alloy on SiO2f/SiO2. Furthermore, SiO2f/SiO2 after the plasma treatment can contribute to the infiltration of brazing alloy into SiO2f/SiO2 to form the pinning structure and reducing the residual stress, which could strengthen the joint. The obtained joint has a high shear strength of 60.5 MPa, approximately 11 times higher than that without plasma treatment.

KW - Brazing

KW - Infiltration

KW - Plasma treatment

KW - Wettability

UR - https://www.scopus.com/pages/publications/84946605476

U2 - 10.1016/j.vacuum.2015.10.025

DO - 10.1016/j.vacuum.2015.10.025

M3 - 文章

AN - SCOPUS:84946605476

SN - 0042-207X

VL - 123

SP - 136

EP - 139

JO - Vacuum

JF - Vacuum

ER -

Plasma treatment on SiO_2f/SiO₂ composites for their assisted brazing with Nb

Abstract

Keywords

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