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Open AccessArticle

Brazing of Mo to Glidcop Dispersion Strengthened Copper for Accelerating Structures

Applied Science and Technology Department, Institute of Materials Physics and Engineering, Politecnico di Torino, I-10129 Torino, Italy
CERN European Organization of Nuclear Research, CH-1211 Geneva, Switzerland
Author to whom correspondence should be addressed.
Materials 2018, 11(9), 1658;
Received: 18 July 2018 / Revised: 22 August 2018 / Accepted: 27 August 2018 / Published: 7 September 2018
(This article belongs to the Section Manufacturing Processes and Systems)
Alumina dispersion-strengthened copper, Glidcop, is used widely in high-heat-load ultra-high-vacuum components for synchrotron light sources (absorbers), accelerator components (beam intercepting devices), and in nuclear power plants. Glidcop has similar thermal and electrical properties to oxygen free electrical (OFE) copper, but has superior mechanical properties, thus making it a feasible structural material; its yield and ultimate tensile strength are equivalent to those of mild-carbon steel. The purpose of this work has been to develop a brazing technique to join Glidcop to Mo, using a commercial Cu-based alloy. The effects of the excessive diffusion of the braze along the grain boundaries on the interfacial chemistry and joint microstructure, as well as on the mechanical performance of the brazed joints, has been investigated. In order to prevent the diffusion of the braze into the Glidcop alloy, a copper barrier layer has been deposited on Glidcop by means of RF-sputtering. View Full-Text
Keywords: brazing; alumina dispersion-strengthened copper; mechanical testing brazing; alumina dispersion-strengthened copper; mechanical testing
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Casalegno, V.; Perero, S.; Ferraris, M.; Taborelli, M.; Arnau Izquierdo, G.; Sgobba, S.; Salvo, M. Brazing of Mo to Glidcop Dispersion Strengthened Copper for Accelerating Structures. Materials 2018, 11, 1658.

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