NDLI: Graphite-to-304SS Braze Joining by Active Metal-Brazing Technique: Improvement of Mechanical Properties

Content Provider	Springer Nature Link
Author	Ray, Ajoy K. Kar, Abhijit Kori, S. A. Pathak, L. C. Sonnad, A. N.
Copyright Year	2012
Abstract	In the present investigation, an attempt has been made to improve the mechanical strength of graphite-stainless steel-brazed joint. Due to high capillary action, the liquid filler alloy usually tends to percolate into the pores of graphite causing severe stress in the graphite near the joint interface resulting in poor joint strength of 10-15 MPa. In the present investigation, a thin coating of SiC was applied on graphite before the joining process to avoid the penetration of liquid filler alloy into the pores of the graphite. Active filler alloy Ag-Cu-Ti was used to braze the substrates. The brazing was carried out at 850, 900, 950, and 1000 °C. The characterization of the interfaces of the brazed joints was carried out using scanning electron microscopy attached with energy dispersive spectroscopy and x-ray diffraction analysis. From the correlation between the microstructural and mechanical properties, shear strength of approximately 35 MPa for graphite-304SS-brazed joint produced at 900 °C was demonstrated. After the shear tests, the fracture surfaces were analyzed by SEM-EDS.
Starting Page	258
Ending Page	266
Page Count	9
File Format	PDF
ISSN	10599495
Journal	Journal of Materials Engineering and Performance
Volume Number	22
Issue Number	1
e-ISSN	15441024
Language	English
Publisher	Springer US
Publisher Date	2012-04-25
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	brazing graphite mechanical property scanning electron microscopy SiC coating Characterization and Evaluation of Materials Tribology, Corrosion and Coatings Quality Control, Reliability, Safety and Risk Engineering Design
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Materials Science Mechanical Engineering

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