Preprint Article Version 1 This version is not peer-reviewed

Brazing of Mo to Glidcop Dispersion Strengthened Copper for Accelerating Structures

Version 1 : Received: 18 July 2018 / Approved: 19 July 2018 / Online: 19 July 2018 (05:18:58 CEST)

A peer-reviewed article of this Preprint also exists.

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. 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.

Journal reference: Materials 2018, 11, 1658
DOI: 10.3390/ma11091658

Abstract

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 OFE (oxygen free electrical) copper, but has superior mechanical properties, thus making it a feasible structural material; its yield and ultimate 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.

Subject Areas

brazing; alumina dispersion-strengthened copper; mechanical test

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