The role of nanocrystalline binder metallic coating into WC after additive manufacturing

The role of nanocrystalline binder metallic coating into WC after additive manufacturing Article history: Tungsten carbide with microsized particle powders are commonly used embedded in a tough binder Received 13 June 2017 metal. The application of these composites is not limited to cutting tools, WC based material has been Received in revised form 19 July 2017 increasingly used in gaskets and other mechanical parts with complex geometries. Consequently, additive Accepted 4 August 2017 manufacturing processes as Selective Laser Sintering (SLS) might be the solution to overcome some of the Available online 7 August 2017 manufacturing problems. However, the use of SLS leads to resolve the problems resulting from difference of physical properties between tungsten carbide and the metallic binder, such as laser absorbance and Keywords: thermal conductivity. Selective laser sintering In this work, an original approach of powder surface modification was considered to prepare WC- Sputtering metal composite powders and overcome these constraints, consisting on the sputter-coating of the WC Nanocrystallinity particle surfaces with a nanocrystalline thin film of metallic binder material (stainless steel). The coating WC Martensitic stainless steel improves the thermal behavior and rheology of the WC particles and, at the same time, ensures a binder homogenous distribution. The feasibility of the SLS technology as manufacturing process for WC http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Applied Surface Science Elsevier

The role of nanocrystalline binder metallic coating into WC after additive manufacturing

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Publisher
Elsevier
Copyright
Copyright © 2017 Elsevier B.V.
ISSN
0169-4332
eISSN
1873-5584
D.O.I.
10.1016/j.apsusc.2017.08.039
Publisher site
See Article on Publisher Site

Abstract

Article history: Tungsten carbide with microsized particle powders are commonly used embedded in a tough binder Received 13 June 2017 metal. The application of these composites is not limited to cutting tools, WC based material has been Received in revised form 19 July 2017 increasingly used in gaskets and other mechanical parts with complex geometries. Consequently, additive Accepted 4 August 2017 manufacturing processes as Selective Laser Sintering (SLS) might be the solution to overcome some of the Available online 7 August 2017 manufacturing problems. However, the use of SLS leads to resolve the problems resulting from difference of physical properties between tungsten carbide and the metallic binder, such as laser absorbance and Keywords: thermal conductivity. Selective laser sintering In this work, an original approach of powder surface modification was considered to prepare WC- Sputtering metal composite powders and overcome these constraints, consisting on the sputter-coating of the WC Nanocrystallinity particle surfaces with a nanocrystalline thin film of metallic binder material (stainless steel). The coating WC Martensitic stainless steel improves the thermal behavior and rheology of the WC particles and, at the same time, ensures a binder homogenous distribution. The feasibility of the SLS technology as manufacturing process for WC

Journal

Applied Surface ScienceElsevier

Published: Jan 1, 2018

References

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