Production of permanent joints of high-temperature materials, molybdenum and graphite, by brazing is very important for many branches of industry related to structural operation at high temperatures. By selecting a brazing filler metal for joining dissimilar materials, several critical factors must be considered, including chemical composition, melting point, thermal expansion coefficients, mutual diffusion processes, wetting behavior of the base material, and residual stresses. This chapter provides a concise overview of brazing dissimilar carbon materials with molybdenum, presenting the microstructural characteristics of brazed joints and evaluating their mechanical properties using different alloying systems in the brazing filler metal. Due to diffusion processes, carbide compounds form at the brazing filler metal–carbon interphase boundary. These compounds may appear as a continuous layer along the brazed seam or as discrete islands within the seam and porous graphite. The latter configuration is preferable for enhanced mechanical performance. Graphite–molybdenum brazed joints hold significant potential for applications in the aerospace, nuclear, automotive, and medical industries. They are particularly valuable in the production of critical components for thermonuclear reactors due to their excellent high-temperature properties.
Author
(s) Details
Maksymova
S.
Brazing Department, Paton Electric Welding Institute of the NAS of
Ukraine, 11, K. Malevych St., Kyiv, 03150, Ukraine.
Voronov
V.
Brazing Department, Paton Electric Welding Institute of the NAS of
Ukraine, 11, K. Malevych St., Kyiv, 03150, Ukraine.
Kovalchuk
P.
Brazing Department, Paton Electric Welding Institute of the NAS of
Ukraine, 11, K. Malevych St., Kyiv, 03150, Ukraine.
Larionov
A
Brazing Department, Paton Electric Welding Institute of the NAS of
Ukraine, 11, K. Malevych St., Kyiv, 03150, Ukraine.
Please see the book here:- https://doi.org/10.9734/bpi/cmsrf/v2/4777
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