Investigation of surface modification on aluminum oxide using acid etching surface pretreatment

The current work focus on surface modification of aluminum oxide using acid etching surface pre-treatment. The main objective of this thesis is to investigate the effect of surface pre-treatment using acid etching on aluminum oxide (Al2O3) cutting tool. The effect of machining performance on alumina...

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Main Author:	Mohd Idham, Rosman
Format:	Undergraduates Project Papers
Language:	English
Published:	2012
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://umpir.ump.edu.my/id/eprint/4460/ http://umpir.ump.edu.my/id/eprint/4460/ http://umpir.ump.edu.my/id/eprint/4460/1/cd6598_66.pdf

id	ump-4460
recordtype	eprints
spelling	ump-44602015-03-03T09:19:10Z http://umpir.ump.edu.my/id/eprint/4460/ Investigation of surface modification on aluminum oxide using acid etching surface pretreatment Mohd Idham, Rosman TJ Mechanical engineering and machinery The current work focus on surface modification of aluminum oxide using acid etching surface pre-treatment. The main objective of this thesis is to investigate the effect of surface pre-treatment using acid etching on aluminum oxide (Al2O3) cutting tool. The effect of machining performance on alumina cutting tool using this pre-treatment in term of wear rate also studied. The scope of work include alumina as cutting tool, acid hydrofluoric for etching, PVD coating process and machining by turning operation. Alumina cutting tool was subjected to acid etching surface pre-treatment for 20 minutes before it was deposited with PVD coating process. Next, the cutting tool was test by turning machine in order to determine the wear resistant and other material characterization also was performed such as microstructure study, hardness Vickers test and surface roughness test. The current work result show shows a regular rough surface with no voids and crystals emerging from the as-received surface while a non-uniform surface topography with peak and valley after pre-treatment. The surface pre-treatment with HF acid provide rough surface to alumina microstructure. Besides, the machining test performance shows the coated alumina with acid etching surface pre-treatment provided longer tool’s life compared to as- received alumina and coated alumina without pre-treatment cutting tools. In addition, the micro hardness test indicated that average Vickers micro hardness of alumina as-received specimen was 1202.47 HV while coated alumina with acid etching pre-treatment specimen was 2293.43 HV. In surface roughness test, the surface roughness of alumina increase after subjected to pre-treatment but decrease after endergoes coating process. From the result, the acid etching surface pre-treatment and coating process affect the mechanical properties of alumina cutting tool such as microstructure, wear resistance, hardness and surface roughness. 2012-06 Undergraduates Project Papers NonPeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/4460/1/cd6598_66.pdf Mohd Idham, Rosman (2012) Investigation of surface modification on aluminum oxide using acid etching surface pretreatment. Faculty of Mechanical Engineering, Universiti Malaysia Pahang. http://iportal.ump.edu.my/lib/item?id=chamo:69513&theme=UMP2
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery Mohd Idham, Rosman Investigation of surface modification on aluminum oxide using acid etching surface pretreatment
description	The current work focus on surface modification of aluminum oxide using acid etching surface pre-treatment. The main objective of this thesis is to investigate the effect of surface pre-treatment using acid etching on aluminum oxide (Al2O3) cutting tool. The effect of machining performance on alumina cutting tool using this pre-treatment in term of wear rate also studied. The scope of work include alumina as cutting tool, acid hydrofluoric for etching, PVD coating process and machining by turning operation. Alumina cutting tool was subjected to acid etching surface pre-treatment for 20 minutes before it was deposited with PVD coating process. Next, the cutting tool was test by turning machine in order to determine the wear resistant and other material characterization also was performed such as microstructure study, hardness Vickers test and surface roughness test. The current work result show shows a regular rough surface with no voids and crystals emerging from the as-received surface while a non-uniform surface topography with peak and valley after pre-treatment. The surface pre-treatment with HF acid provide rough surface to alumina microstructure. Besides, the machining test performance shows the coated alumina with acid etching surface pre-treatment provided longer tool’s life compared to as- received alumina and coated alumina without pre-treatment cutting tools. In addition, the micro hardness test indicated that average Vickers micro hardness of alumina as-received specimen was 1202.47 HV while coated alumina with acid etching pre-treatment specimen was 2293.43 HV. In surface roughness test, the surface roughness of alumina increase after subjected to pre-treatment but decrease after endergoes coating process. From the result, the acid etching surface pre-treatment and coating process affect the mechanical properties of alumina cutting tool such as microstructure, wear resistance, hardness and surface roughness.
format	Undergraduates Project Papers
author	Mohd Idham, Rosman
author_facet	Mohd Idham, Rosman
author_sort	Mohd Idham, Rosman
title	Investigation of surface modification on aluminum oxide using acid etching surface pretreatment
title_short	Investigation of surface modification on aluminum oxide using acid etching surface pretreatment
title_full	Investigation of surface modification on aluminum oxide using acid etching surface pretreatment
title_fullStr	Investigation of surface modification on aluminum oxide using acid etching surface pretreatment
title_full_unstemmed	Investigation of surface modification on aluminum oxide using acid etching surface pretreatment
title_sort	investigation of surface modification on aluminum oxide using acid etching surface pretreatment
publishDate	2012
url	http://umpir.ump.edu.my/id/eprint/4460/ http://umpir.ump.edu.my/id/eprint/4460/ http://umpir.ump.edu.my/id/eprint/4460/1/cd6598_66.pdf
first_indexed	2023-09-18T21:59:04Z
last_indexed	2023-09-18T21:59:04Z
_version_	1777414275859480576

Investigation of surface modification on aluminum oxide using acid etching surface pretreatment

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