Effect of pretreatment parameters on cobalt removal and surface roughness of tungsten carbide prior to diamond coating

Cobalt removal and surface roughness substrate are important parameters to determine the quality of diamond coating. Various methods are adopted to solve this problem and one of them is by using chemical pretreatment. In this present work, an attempt is made to study the effect of pretreatment param...

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Main Author:	Abdullah, Arman Shah
Format:	Thesis
Language:	English
Published:	2010
Subjects:	TP Chemical technology
Online Access:	http://eprints.utm.my/id/eprint/12692/6/ArmanShahAbdullahMFKM2010.pdf
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id	my-utm-ep.12692
record_format	uketd_dc
spelling	my-utm-ep.126922017-09-18T05:00:50Z Effect of pretreatment parameters on cobalt removal and surface roughness of tungsten carbide prior to diamond coating 2010 Abdullah, Arman Shah TP Chemical technology Cobalt removal and surface roughness substrate are important parameters to determine the quality of diamond coating. Various methods are adopted to solve this problem and one of them is by using chemical pretreatment. In this present work, an attempt is made to study the effect of pretreatment parameters namely temperature and time on cobalt removal and surface roughness of tungsten carbide. Full factorial experimental design followed by Response Surface Methodology (RSM) is employed in this study to plan and analyze the experiment. The surface roughness Ry and Rz, and cobalt removal are the independent response variables. Empirical models are successfully developed to predict amount of cobalt removal and surface finish of the substrate after single step etching process. Experimental results show that the temperature is the most significant factor followed by the etching time for predicted surface roughness Ry while for surface roughness Rz, the temperature and time2 are found to be the most significant factors. Whereas for interaction of time and temperature is not significant to influence Ry. It is only significant to determine Rz and cobalt removal. 2010 Thesis http://eprints.utm.my/id/eprint/12692/ http://eprints.utm.my/id/eprint/12692/6/ArmanShahAbdullahMFKM2010.pdf application/pdf en public masters Universiti Teknologi Malaysia, Faculty of Mechanical Engineering Faculty of Mechanical Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TP Chemical technology
spellingShingle	TP Chemical technology Abdullah, Arman Shah Effect of pretreatment parameters on cobalt removal and surface roughness of tungsten carbide prior to diamond coating
description	Cobalt removal and surface roughness substrate are important parameters to determine the quality of diamond coating. Various methods are adopted to solve this problem and one of them is by using chemical pretreatment. In this present work, an attempt is made to study the effect of pretreatment parameters namely temperature and time on cobalt removal and surface roughness of tungsten carbide. Full factorial experimental design followed by Response Surface Methodology (RSM) is employed in this study to plan and analyze the experiment. The surface roughness Ry and Rz, and cobalt removal are the independent response variables. Empirical models are successfully developed to predict amount of cobalt removal and surface finish of the substrate after single step etching process. Experimental results show that the temperature is the most significant factor followed by the etching time for predicted surface roughness Ry while for surface roughness Rz, the temperature and time2 are found to be the most significant factors. Whereas for interaction of time and temperature is not significant to influence Ry. It is only significant to determine Rz and cobalt removal.
format	Thesis
qualification_level	Master's degree
author	Abdullah, Arman Shah
author_facet	Abdullah, Arman Shah
author_sort	Abdullah, Arman Shah
title	Effect of pretreatment parameters on cobalt removal and surface roughness of tungsten carbide prior to diamond coating
title_short	Effect of pretreatment parameters on cobalt removal and surface roughness of tungsten carbide prior to diamond coating
title_full	Effect of pretreatment parameters on cobalt removal and surface roughness of tungsten carbide prior to diamond coating
title_fullStr	Effect of pretreatment parameters on cobalt removal and surface roughness of tungsten carbide prior to diamond coating
title_full_unstemmed	Effect of pretreatment parameters on cobalt removal and surface roughness of tungsten carbide prior to diamond coating
title_sort	effect of pretreatment parameters on cobalt removal and surface roughness of tungsten carbide prior to diamond coating
granting_institution	Universiti Teknologi Malaysia, Faculty of Mechanical Engineering
granting_department	Faculty of Mechanical Engineering
publishDate	2010
url	http://eprints.utm.my/id/eprint/12692/6/ArmanShahAbdullahMFKM2010.pdf
_version_	1747814947729965056

Effect of pretreatment parameters on cobalt removal and surface roughness of tungsten carbide prior to diamond coating

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