Porosity and wear resistance of flame sprayed tungsten carbide coatings

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Thermal-sprayed coatings offer practical and economical solutions for corrosion and wear protection of components or tools. To improve the coating properties, heat treatment such as preheat is applied. The selection of coating and substrate materials is a key factor in improving the quality of the coating morphology after the heat treatment. This paper presents the experimental results regarding the effect of preheat temperatures, i.e. 200°C, 300°C and 400°C, on porosity and wear resistance of tungsten carbide (WC) coating sprayed by flame thermal coating. The powders and coatings morphology were analyzed by a Field Emission Scanning Electron Microscope equipped with Energy Dispersive Spectrometry (FE-SEM/EDS), whereas the phase identification was performed by X-Ray diffraction technique (XRD). In order to evaluate the quality of the flame spray obtained coatings, the porosity, micro-hardness and wear rate of the specimens was determined. The results showed that WC coating gives a higher surface hardness from 1391 HVN up to 1541 HVN compared to that of the non-coating. Moreover, the wear rate increased from 0.072?mm3/min. to 0.082?mm3/min. when preheat temperature was increased. Preheat on H13 steel substrate can reduce the percentage of porosity level from 10.24 % to 3.94% on the thermal spray coatings.

Original languageEnglish
Title of host publicationGreen Process, Material, and Energy
Subtitle of host publicationA Sustainable Solution for Climate Change - Proceedings of the 3rd International Conference on Engineering, Technology, and Industrial Application, ICETIA 2016
EditorsHari Prasetyo, Wisnu Setiawan, Fajar Suryawan, Munajat Tri Nugroho, Tri Widayatno, Nurul Hidayati, Eko Setiawan
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735415294
DOIs
Publication statusPublished - 15 Jun 2017
Event3rd International Conference on Engineering, Technology, and Industrial Application - Green Process, Material, and Energy: A Sustainable Solution for Climate Change, ICETIA 2016 - Surakarta, Indonesia
Duration: 7 Dec 20168 Dec 2016

Publication series

NameAIP Conference Proceedings
Volume1855
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference3rd International Conference on Engineering, Technology, and Industrial Application - Green Process, Material, and Energy: A Sustainable Solution for Climate Change, ICETIA 2016
CountryIndonesia
CitySurakarta
Period7/12/168/12/16

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