Effect of Heat Treatment on Wear Performance of Nanostructured WC-Ni/Cr HVOF Sprayed Coatings

The extraction and processing of bitumen from oil sands exposes machinery parts to constant abrasive wear which can cause severe surface degradation and component failure, resulting in production shut-downs. To reduce the effect of wear on performance of production machinery, wear resistant coatings...

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Autores principales: Tarek Ben Mahmud, Mal Ali Farrokhzad, Tahir Irfan Khan
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Publicado: Japanese Society of Tribologists 2017
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Acceso en línea:https://doaj.org/article/b8352578902d4e4499fa19c0dcff1f2e
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spelling oai:doaj.org-article:b8352578902d4e4499fa19c0dcff1f2e2021-11-05T09:20:42ZEffect of Heat Treatment on Wear Performance of Nanostructured WC-Ni/Cr HVOF Sprayed Coatings1881-219810.2474/trol.12.18https://doaj.org/article/b8352578902d4e4499fa19c0dcff1f2e2017-02-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/trol/12/1/12_18/_pdf/-char/enhttps://doaj.org/toc/1881-2198The extraction and processing of bitumen from oil sands exposes machinery parts to constant abrasive wear which can cause severe surface degradation and component failure, resulting in production shut-downs. To reduce the effect of wear on performance of production machinery, wear resistant coatings must be used to extend component life. Recently, thick microstructured cermet coatings based on WC dispersions have been used to protect surfaces. In this study a nanostructured 83WC-17Ni/Cr coating was deposited on to C-Mn steel surfaces using High Velocity Oxy-Fuel (HVOF) spraying. The effect of heat treatment in air and nitrogen atmosphere on changes in the microstructure, hardness and wear resistance was investigated. The results showed that both the hardness and wear resistance increased with increasing heat treatment temperature in both air and nitrogen atmosphere. However, the use of heat treatments in air led to the formation of brittle metal oxides which resulted in micro-cracking within the coatings. This caused the coatings to fail by brittle fracture during wear testing. In comparison heat treatment in nitrogen produced better wear resistance because metal oxide formation was avoided.Tarek Ben MahmudMal Ali FarrokhzadTahir Irfan KhanJapanese Society of Tribologistsarticlenanostructured coatinghvof thermal sprayingheat treatmentabrasive wearmicrohardnessPhysicsQC1-999Engineering (General). Civil engineering (General)TA1-2040Mechanical engineering and machineryTJ1-1570ChemistryQD1-999ENTribology Online, Vol 12, Iss 1, Pp 18-28 (2017)
institution DOAJ
collection DOAJ
language EN
topic nanostructured coating
hvof thermal spraying
heat treatment
abrasive wear
microhardness
Physics
QC1-999
Engineering (General). Civil engineering (General)
TA1-2040
Mechanical engineering and machinery
TJ1-1570
Chemistry
QD1-999
spellingShingle nanostructured coating
hvof thermal spraying
heat treatment
abrasive wear
microhardness
Physics
QC1-999
Engineering (General). Civil engineering (General)
TA1-2040
Mechanical engineering and machinery
TJ1-1570
Chemistry
QD1-999
Tarek Ben Mahmud
Mal Ali Farrokhzad
Tahir Irfan Khan
Effect of Heat Treatment on Wear Performance of Nanostructured WC-Ni/Cr HVOF Sprayed Coatings
description The extraction and processing of bitumen from oil sands exposes machinery parts to constant abrasive wear which can cause severe surface degradation and component failure, resulting in production shut-downs. To reduce the effect of wear on performance of production machinery, wear resistant coatings must be used to extend component life. Recently, thick microstructured cermet coatings based on WC dispersions have been used to protect surfaces. In this study a nanostructured 83WC-17Ni/Cr coating was deposited on to C-Mn steel surfaces using High Velocity Oxy-Fuel (HVOF) spraying. The effect of heat treatment in air and nitrogen atmosphere on changes in the microstructure, hardness and wear resistance was investigated. The results showed that both the hardness and wear resistance increased with increasing heat treatment temperature in both air and nitrogen atmosphere. However, the use of heat treatments in air led to the formation of brittle metal oxides which resulted in micro-cracking within the coatings. This caused the coatings to fail by brittle fracture during wear testing. In comparison heat treatment in nitrogen produced better wear resistance because metal oxide formation was avoided.
format article
author Tarek Ben Mahmud
Mal Ali Farrokhzad
Tahir Irfan Khan
author_facet Tarek Ben Mahmud
Mal Ali Farrokhzad
Tahir Irfan Khan
author_sort Tarek Ben Mahmud
title Effect of Heat Treatment on Wear Performance of Nanostructured WC-Ni/Cr HVOF Sprayed Coatings
title_short Effect of Heat Treatment on Wear Performance of Nanostructured WC-Ni/Cr HVOF Sprayed Coatings
title_full Effect of Heat Treatment on Wear Performance of Nanostructured WC-Ni/Cr HVOF Sprayed Coatings
title_fullStr Effect of Heat Treatment on Wear Performance of Nanostructured WC-Ni/Cr HVOF Sprayed Coatings
title_full_unstemmed Effect of Heat Treatment on Wear Performance of Nanostructured WC-Ni/Cr HVOF Sprayed Coatings
title_sort effect of heat treatment on wear performance of nanostructured wc-ni/cr hvof sprayed coatings
publisher Japanese Society of Tribologists
publishDate 2017
url https://doaj.org/article/b8352578902d4e4499fa19c0dcff1f2e
work_keys_str_mv AT tarekbenmahmud effectofheattreatmentonwearperformanceofnanostructuredwcnicrhvofsprayedcoatings
AT malalifarrokhzad effectofheattreatmentonwearperformanceofnanostructuredwcnicrhvofsprayedcoatings
AT tahirirfankhan effectofheattreatmentonwearperformanceofnanostructuredwcnicrhvofsprayedcoatings
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