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Reusing 316L Stainless Steel Feedstock Powder for Cold Spray Deposition

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Bibliographic Details
Title: Reusing 316L Stainless Steel Feedstock Powder for Cold Spray Deposition
Authors: Edwin Rúa Ramírez, Alessio Silvello, Edwin Torres Diaz, Rodolpho F. Vaz, Irene Garcia Cano
Source: Articles publicats en revistes (Ciència dels Materials i Química Física)
Dipòsit Digital de la UB
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Publisher Information: Springer Science and Business Media LLC, 2024.
Publication Year: 2024
Subject Terms: 0203 mechanical engineering, Powder metallurgy, Coatings, 02 engineering and technology, Revestiments, 0210 nano-technology, Pulvimetal·lúrgia
Description: Abstract Cold spray (CS) is a solid-state deposition of coatings, or an additive manufacturing (CSAM) process employed to make parts maintaining the feedstock powders properties in the deposited material. One of the cons for industrial use of CS or CSAM is their higher costs compared to the traditional coating or manufacturing processes. Reducing the feedstock powder consumption by maximizing the deposition efficiency has been the focus of many works. However, depending on the part geometry (e.g., a plate with holes), and CSAM strategy with low deposition efficiency, a considerable mass of powder can pass through the substrate, failing to bond, and becoming a process waste. This work evaluates CS 316L stainless steel coatings, recovering the unbonded particles and reusing them in a later deposition, thus making coatings with reused powders. The original and recovered powders were characterized in terms of particle shape and size distribution, phase composition, microhardness, and other properties to evaluate the evolution of the particles' properties due to the recovery process. Besides the powders, the CS coatings obtained with original and recovered powders were evaluated through cross-section image analysis, where porosity, deposition efficiency, and microhardness were observed. The results indicate that the powders' physical properties undergo variations over multiple deposition cycles without significantly affecting the quality of the CS coatings, with porosity below 1.5% and microhardness around 350 HV0.3 in most cases. Recovering and reusing powder for CS promotes environmental sustainability and generates significant economic benefits. This study contributes to making CS more economically viable from a life cycle cost assessment perspective. Graphical abstract
Document Type: Article
File Description: application/pdf
Language: English
ISSN: 1544-1016
1059-9630
DOI: 10.1007/s11666-024-01884-3
Access URL: https://hdl.handle.net/2445/222155
Rights: CC BY
Accession Number: edsair.doi.dedup.....8e9c33a3e54a28b48bfc9b26b561fce1
Database: OpenAIRE
Description
Abstract:Abstract Cold spray (CS) is a solid-state deposition of coatings, or an additive manufacturing (CSAM) process employed to make parts maintaining the feedstock powders properties in the deposited material. One of the cons for industrial use of CS or CSAM is their higher costs compared to the traditional coating or manufacturing processes. Reducing the feedstock powder consumption by maximizing the deposition efficiency has been the focus of many works. However, depending on the part geometry (e.g., a plate with holes), and CSAM strategy with low deposition efficiency, a considerable mass of powder can pass through the substrate, failing to bond, and becoming a process waste. This work evaluates CS 316L stainless steel coatings, recovering the unbonded particles and reusing them in a later deposition, thus making coatings with reused powders. The original and recovered powders were characterized in terms of particle shape and size distribution, phase composition, microhardness, and other properties to evaluate the evolution of the particles' properties due to the recovery process. Besides the powders, the CS coatings obtained with original and recovered powders were evaluated through cross-section image analysis, where porosity, deposition efficiency, and microhardness were observed. The results indicate that the powders' physical properties undergo variations over multiple deposition cycles without significantly affecting the quality of the CS coatings, with porosity below 1.5% and microhardness around 350 HV0.3 in most cases. Recovering and reusing powder for CS promotes environmental sustainability and generates significant economic benefits. This study contributes to making CS more economically viable from a life cycle cost assessment perspective. Graphical abstract
ISSN:15441016
10599630
DOI:10.1007/s11666-024-01884-3