Brazing temperature-dependent interfacial reaction layer features between CBN and Cu-Sn-Ti active filler metal

2019 ◽  
Vol 35 (10) ◽  
pp. 2163-2168 ◽  
Author(s):  
Yonggang Fan ◽  
Junxiang Fan ◽  
Cong Wang
Keyword(s):  
Interfacial Reaction ◽  
Reaction Layer ◽  
Filler Metal ◽  
Temperature Dependent ◽  
Active Filler ◽  
Interfacial Reaction Layer

scholarly journals Interface Behavior of Brazing between Zr-Cu Filler Metal and SiC Ceramic

Crystals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 727
Author(s):  
Bofang Zhou ◽  
Taohua Li ◽  
Hongxia Zhang ◽  
Junliang Hou
Keyword(s):  
Interfacial Reaction ◽  
Reaction Layer ◽  
Chemical Potential ◽  
Filler Metal ◽  
Diffusion Constant ◽  
Interface Reaction ◽  
Diffusion Path ◽  
Interface Behavior ◽  
Interfacial Reaction Layer ◽  
Sic Ceramic

The interface behavior of brazing between Zr-Cu filler metal and SiC ceramic was investigated. Based on the brazing experiment, the formation of brazing interface products was analyzed using OM, SEM, XRD and other methods. The stable chemical potential phase diagram was established to analyze the possible diffusion path of interface elements, and then the growth behavior of the interface reaction layer was studied by establishing relevant models. The results show that the interface reaction between the active element Zr and SiC ceramic is the main reason in the brazing process the interface products are mainly ZrC and Zr2Si and the possible diffusion path of elements in the product formation process is explained. The kinetic equation of interfacial reaction layer growth is established, and the diffusion constant (2.1479 μm·s1/2) and activation energy (42.65 kJ·mol−1) are obtained. The growth kinetics equation of interfacial reaction layer thickness with holding time at different brazing temperatures is obtained.

A Study on Interfacial Reaction and Titanium Distribution in Brazing Sapphire to Inconel 600 Using Cu/Ni Porous Composite

2011 ◽  
Vol 383-390 ◽  
pp. 898-902
Author(s):  
T. Zaharinie ◽  
Farazila Yusof ◽  
Mohd Hamdi Abdul Shukor ◽  
T. Ariga
Keyword(s):  
Electron Microscope ◽  
Interfacial Reaction ◽  
Reaction Layer ◽  
Filler Metal ◽  
Thermodynamic Activity ◽  
Porous Composite ◽  
Inconel 600 ◽  
Active Filler ◽  
Braze Joint ◽  
Thin Reaction Layer

In this study, a Cu/Ni porous composite was introduced when brazing sapphire to Inconel 600 using a special active filler metal of BAg-8 + 2Ti. The aim of the research is to investigate the Ti distributionin the Cu/Niporous composite and braze joint. The brazing was carried out in brazingtemperature of 830°C for 30 minutes by a vacuum environment (10-4 Pa). The interface of braze joint/sapphire and braze joint/Inconel 600 were observed by an electron microscope followed by elements analyzing using SEM-EDS. The observation and analysis shows that there is a black and thin reaction layer at braze joint/sapphire interface and a non-uniform of reaction layer was formed at braze joint/Inconel 600 interface. The formation of reaction layer is influenced by thermodynamic activity of Ti during brazing.

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