A new approach to flux deposition for brazing aluminium by low pressure cold spraying-Reference-Cited by-同舟云学术

A new approach to flux deposition for brazing aluminium by low pressure cold spraying

Published:2022-12-01 Issue:4 Volume:40 Page:114-124
ISSN:2083-134X
Container-title:Materials Science-Poland
language:en
Short-container-title:

Author:

Wojdat Tomasz¹,Winnicki Marcin¹,Pabian Jaroslaw²

Affiliation:

1. Department of Metal Forming, Welding and Metrology , Wroclaw University of Science and Technology , Wrocław , Poland

2. Mahle Behr Corp., Ostrów Wielkopolski , Poland

Abstract

Abstract This paper presents the results of study on the possibility of Nocolok flux deposition to aluminium substrates using the low-pressure cold gas spraying (LPCS) method. An innovative method of applying flux in the form of a powder without organic adhesive additives was proposed, allowing strict control of the deposited material. The influence of the flux powder feeding rate (PFR – 4.5 g/min, 6.3 g/min and 8.5 g/min) on the efficiency of the brazing process of AA3003 aluminium alloy plates was investigated. The results of energy dispersive spectrometry (EDS) analysis of the deposited flux coatings are presented for various process parameters. The wettability tested by spreading the B-AlSi12 filler metal on flux-covered aluminium substrates increased significantly with increasing PFR – the contact angle decreased from 21.0° to 4.6°. Microstructure analysis confirmed the high quality of the brazed joints, which were devoid of braze incompatibilities.

Publisher

Walter de Gruyter GmbH

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Link

https://www.sciendo.com/pdf/10.2478/msp-2022-0048

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