Flash joining of CVD-SiC coated Cf/SiC composites with a Ti interlayer

被引：53

作者：

Tatarko, Peter ^{[1
,2
,3
,4
]}

Grasso, Salvatore ^{[1
,2
]}

Saunders, Theo G. ^{[1
,2
]}

Casalegno, Valentina ^{[5
]}

Ferraris, Monica ^{[5
]}

Reece, Michael J. ^{[1
,2
]}

机构：

[1] Queen Mary Univ London, Sch Engn & Mat Sci, Mile End Rd, London E1 4NS, England

[2] Queen Mary Univ London, Nanoforce Technol Ltd, Mile End Rd, London E1 4NS, England

[3] Slovak Acad Sci, Inst Inorgan Chem, Dubravska Cesta 9, Bratislava 84536 45, Slovakia

[4] Slovak Acad Sci, Inst Mat Res, Watsonova 47, Kosice 04001, Slovakia

[5] Politecn Torino, Dept Appl Sci & Technol, Corso Duca Abruzzi 24, I-10129 Turin, Italy

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2017年 / 37卷 / 13期

基金：

欧盟第七框架计划; 英国工程与自然科学研究理事会;

关键词：

Flash joining; Diffusion bonding; Spark plasma sintering; C-f/SiC composites; Ti interlayer; CERAMIC-MATRIX COMPOSITES; TI3SIC2 TAPE FILM; C/C COMPOSITES; STRENGTH; JOINTS;

D O I：

10.1016/j.jeurceramsoc.2017.05.016

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Flash joining of CVD-SiC coated C-f/SiC samples with a Ti interlayer was achieved using a Spark Plasma Sintering machine. The influence of different heating powers and discharge times were investigated. The sample flash joined at a maximum heating power of 2.2 kW (peak electric current of 370 A) within 7 s showed the highest apparent shear strength of 31.4 MPa, which corresponds to the interlaminar shear strength of the composites. A maximum joining temperature of similar to 1237 degrees C was reached during the flash joining. An extremely rapid heating rate of 9600 degrees C/min combined with a very short processing time hindered any reaction between the CVD-SiC coating and the Ti interlayer. The formation of a metallic joint (Ti based) in the absence of any detectable reaction phase is proposed as a new joining mechanism. For a conventionally joined SPS sample, the formation of titanium silicide phases inhibited the formation of a bond. (C) 2017 The Authors. Published by Elsevier Ltd.

引用

页码：3841 / 3848

页数：8

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