Have a personal or library account? Click to login
A new approach to flux deposition for brazing aluminium by low pressure cold spraying Cover

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

Materials Science-Poland
Volume 40 (2022): Issue 4 (December 2022)
By:
Open Access
|Apr 2023

Figures & Tables

Fig. 1

An exemplary roughness profile for the PFR 2 sample (DM). DM, digital microscope
An exemplary roughness profile for the PFR 2 sample (DM). DM, digital microscope

Fig. 2

Micrographs (SEM, BSE) of flux coatings: (A) PFR 1 and (B) PFR 2. 1 – substrate (AA3003), 2 – flux (Nocolok) coating. SEM, scanning electron microscope
Micrographs (SEM, BSE) of flux coatings: (A) PFR 1 and (B) PFR 2. 1 – substrate (AA3003), 2 – flux (Nocolok) coating. SEM, scanning electron microscope

Fig. 3

Micrograph (SEM, BSE) of the PFR 3 coating. 1 – substrate (AA3003), 2 – flux (Nocolok) coating. SEM, scanning electron microscope
Micrograph (SEM, BSE) of the PFR 3 coating. 1 – substrate (AA3003), 2 – flux (Nocolok) coating. SEM, scanning electron microscope

Fig. 4

(A) EDS analysis of the PFR 3 coating's surface and (B) elements distribution of aluminium, (C) fluorine and (D) potassium. Table – chemical composition of the coating depended on powder feed rate determined based on the surface EDS analysis. EDS, energy dispersive spectrometry
(A) EDS analysis of the PFR 3 coating's surface and (B) elements distribution of aluminium, (C) fluorine and (D) potassium. Table – chemical composition of the coating depended on powder feed rate determined based on the surface EDS analysis. EDS, energy dispersive spectrometry

Fig. 5

Results of the B-AlSi12 filler metal spreadability on AA3003 substrates
Results of the B-AlSi12 filler metal spreadability on AA3003 substrates

Fig. 6

Results of the B-AlSi12 filler metal wettability test on AA3003 substrates
Results of the B-AlSi12 filler metal wettability test on AA3003 substrates

Fig. 7

Cross-section (DM) of brazed joints for various samples: (A) PFR 1, (B) PFR 2 and (C) PFR 3. DM, digital microscope
Cross-section (DM) of brazed joints for various samples: (A) PFR 1, (B) PFR 2 and (C) PFR 3. DM, digital microscope

Fig. 8

Microstructure (SEM, BSE) of brazed joints (A) PFR 1, (B) PFR 2, (C) PFR 3 and phase precipitates of Si in the microstructure of (A) PFR1, (B) PFR 2 and (C) PFR 3 samples. 1 – solid solution dendrites α-Al, 2 – eutectic (α + Si), 3 – irregularly shaped intermetallic phase and 4 – coniferous Si phase precipitates. SEM, scanning electron microscope
Microstructure (SEM, BSE) of brazed joints (A) PFR 1, (B) PFR 2, (C) PFR 3 and phase precipitates of Si in the microstructure of (A) PFR1, (B) PFR 2 and (C) PFR 3 samples. 1 – solid solution dendrites α-Al, 2 – eutectic (α + Si), 3 – irregularly shaped intermetallic phase and 4 – coniferous Si phase precipitates. SEM, scanning electron microscope

Fig. 9

EDS of the PFR 1 sample presenting the (A) analysed region and (B) distribution of the elements: Si, (C) Fe, and (D) Mn (mag. 2,000×, 20 keV). EDS, elemental mapping
EDS of the PFR 1 sample presenting the (A) analysed region and (B) distribution of the elements: Si, (C) Fe, and (D) Mn (mag. 2,000×, 20 keV). EDS, elemental mapping

Fig. 10

SEM micrograph (BSE) of the PFR 1 sample with EDS analysis (magnification 2,000×, 20 keV). EDS, energy dispersive spectrometry; SEM, scanning electron microscope
SEM micrograph (BSE) of the PFR 1 sample with EDS analysis (magnification 2,000×, 20 keV). EDS, energy dispersive spectrometry; SEM, scanning electron microscope

LPCS process parameters during flux deposition

Powder feed rate, g/minTraverse speed, mm/sGas preheating temperature, °CGas pressure, MPaStandoff, mmNumber of spray passes
4.52020005101
6.3
8.5

Results of roughness and thickness measurements

ParameterSamples
PFR 1PFR 2PFR 3
Mean roughness Ra (μm)16.124.335.7
Mean thickness t (μm)5.316.283.5
DOI: https://doi.org/10.2478/msp-2022-0048 | Journal eISSN: 2083-134X | Journal ISSN: 2083-1331
Journal RSS Feed
Language: English
Page range: 114 - 124
Submitted on: Jan 10, 2023
Accepted on: Mar 8, 2023
Published on: Apr 20, 2023
Published by: Sciendo
In partnership with: Paradigm Publishing Services
Publication frequency: 4 times per year
Keywords:
flux deposition,
low-pressure cold spraying,
aluminium alloy,
brazing,
flux powder,
brazed joints,
B-AlSi12 filler metal
Related subjects:
Materials sciences,
Materials sciences, other,
Nanomaterials,
Functional and smart materials,
Materials characterization and properties

© 2023 Tomasz Wojdat, Marcin Winnicki, Jaroslaw Pabian, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Previous articleVolume 40 (2022): Issue 4 (December 2022)Next article