Thermal Oxidation Process Improved Corrosion in Cobalt Chromium Molybdenum Alloys

The corrosion phenomena are always give bad impact to any metal products including human implants. This is due to the corrosion impacts are harmful for hard tissues and soft tissues. There are many methods to prevent the process of corrosion on implant materials such as coating with bioceramic mater...

Full description

Bibliographic Details
Main Authors:	Mas Ayu, Hassan, Rosdi, Daud, A., Shah, Mohd Faiz, M. Y., Hazwan, H. M., Salwani, Mohd Salleh, Siti Haryani, Tomadi, Reza, M. S.
Format:	Article
Language:	English
Published:	IASE 2017
Subjects:	Q Science (General) TJ Mechanical engineering and machinery
Online Access:	http://umpir.ump.edu.my/id/eprint/19256/ http://umpir.ump.edu.my/id/eprint/19256/ http://umpir.ump.edu.my/id/eprint/19256/ http://umpir.ump.edu.my/id/eprint/19256/1/Procedia%20engineering.pdf

id	ump-19256
recordtype	eprints
spelling	ump-192562018-05-18T07:07:34Z http://umpir.ump.edu.my/id/eprint/19256/ Thermal Oxidation Process Improved Corrosion in Cobalt Chromium Molybdenum Alloys Mas Ayu, Hassan Rosdi, Daud A., Shah Mohd Faiz, M. Y. Hazwan, H. M. Salwani, Mohd Salleh Siti Haryani, Tomadi Reza, M. S. Q Science (General) TJ Mechanical engineering and machinery The corrosion phenomena are always give bad impact to any metal products including human implants. This is due to the corrosion impacts are harmful for hard tissues and soft tissues. There are many methods to prevent the process of corrosion on implant materials such as coating with bioceramic materials and modify the implant surface with surface modification techniques. However, until now there is still no gold standard to overcome this problem and it is remain in researching process. Thus, the aim of this research is to investigate the potential and economical surface modification method to reduce the corrosion effects on Cobalt-Chromium-Molybdenum (Co-Cr-Mo) based alloy when insert in human body. The thermal oxidation process was selected to treat Co-Cr-Mo surface substrate. Firstly, Co-Cr-Mo alloy was heated in muffle furnace at constant temperature of 850°C with different duration of heating such as 3 hours and 6 hours in order to analyze the formation of oxide layer. The corrosion behaviours of untreated sample and oxidized sample were investigated utilizing potentiodynamic polarization tests in simulated body fluids (SBF). The Vickers hardness after corrosion testing was measured in order to evaluate the effect of thermal oxidation in reducing corrosion rate. Based on the results obtained it is clearly showed that substrates undergone thermal oxidation with 6 hours duration time performed better than 3 hours duration, with the hardness value 832.2HV vs. 588HV respectively. Dense oxide layer and uniform thickness formed on the oxidized substrates able to help in reducing the corrosion effects on Co-Cr-Mo alloy without degraded its excellent mechanical properties. The microstructures of oxidized substrates before and after corrosion test were also analyzed using FESEM images for better observations. It was determined that corrosion resistance of Co-Cr-Mo substrate can be increased with oxide layer formed on the alloys using thermal oxidation process. IASE 2017-07-29 Article PeerReviewed application/pdf en cc_by_nc_nd http://umpir.ump.edu.my/id/eprint/19256/1/Procedia%20engineering.pdf Mas Ayu, Hassan and Rosdi, Daud and A., Shah and Mohd Faiz, M. Y. and Hazwan, H. M. and Salwani, Mohd Salleh and Siti Haryani, Tomadi and Reza, M. S. (2017) Thermal Oxidation Process Improved Corrosion in Cobalt Chromium Molybdenum Alloys. International Journal of Advanced and Applied Sciences, 9 (4). pp. 144-149. ISSN 2313-626X https://doi.org/10.21833/ijaas.2017.09.020 doi: 10.21833/ijaas.2017.09.020
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	Q Science (General) TJ Mechanical engineering and machinery
spellingShingle	Q Science (General) TJ Mechanical engineering and machinery Mas Ayu, Hassan Rosdi, Daud A., Shah Mohd Faiz, M. Y. Hazwan, H. M. Salwani, Mohd Salleh Siti Haryani, Tomadi Reza, M. S. Thermal Oxidation Process Improved Corrosion in Cobalt Chromium Molybdenum Alloys
description	The corrosion phenomena are always give bad impact to any metal products including human implants. This is due to the corrosion impacts are harmful for hard tissues and soft tissues. There are many methods to prevent the process of corrosion on implant materials such as coating with bioceramic materials and modify the implant surface with surface modification techniques. However, until now there is still no gold standard to overcome this problem and it is remain in researching process. Thus, the aim of this research is to investigate the potential and economical surface modification method to reduce the corrosion effects on Cobalt-Chromium-Molybdenum (Co-Cr-Mo) based alloy when insert in human body. The thermal oxidation process was selected to treat Co-Cr-Mo surface substrate. Firstly, Co-Cr-Mo alloy was heated in muffle furnace at constant temperature of 850°C with different duration of heating such as 3 hours and 6 hours in order to analyze the formation of oxide layer. The corrosion behaviours of untreated sample and oxidized sample were investigated utilizing potentiodynamic polarization tests in simulated body fluids (SBF). The Vickers hardness after corrosion testing was measured in order to evaluate the effect of thermal oxidation in reducing corrosion rate. Based on the results obtained it is clearly showed that substrates undergone thermal oxidation with 6 hours duration time performed better than 3 hours duration, with the hardness value 832.2HV vs. 588HV respectively. Dense oxide layer and uniform thickness formed on the oxidized substrates able to help in reducing the corrosion effects on Co-Cr-Mo alloy without degraded its excellent mechanical properties. The microstructures of oxidized substrates before and after corrosion test were also analyzed using FESEM images for better observations. It was determined that corrosion resistance of Co-Cr-Mo substrate can be increased with oxide layer formed on the alloys using thermal oxidation process.
format	Article
author	Mas Ayu, Hassan Rosdi, Daud A., Shah Mohd Faiz, M. Y. Hazwan, H. M. Salwani, Mohd Salleh Siti Haryani, Tomadi Reza, M. S.
author_facet	Mas Ayu, Hassan Rosdi, Daud A., Shah Mohd Faiz, M. Y. Hazwan, H. M. Salwani, Mohd Salleh Siti Haryani, Tomadi Reza, M. S.
author_sort	Mas Ayu, Hassan
title	Thermal Oxidation Process Improved Corrosion in Cobalt Chromium Molybdenum Alloys
title_short	Thermal Oxidation Process Improved Corrosion in Cobalt Chromium Molybdenum Alloys
title_full	Thermal Oxidation Process Improved Corrosion in Cobalt Chromium Molybdenum Alloys
title_fullStr	Thermal Oxidation Process Improved Corrosion in Cobalt Chromium Molybdenum Alloys
title_full_unstemmed	Thermal Oxidation Process Improved Corrosion in Cobalt Chromium Molybdenum Alloys
title_sort	thermal oxidation process improved corrosion in cobalt chromium molybdenum alloys
publisher	IASE
publishDate	2017
url	http://umpir.ump.edu.my/id/eprint/19256/ http://umpir.ump.edu.my/id/eprint/19256/ http://umpir.ump.edu.my/id/eprint/19256/ http://umpir.ump.edu.my/id/eprint/19256/1/Procedia%20engineering.pdf
first_indexed	2023-09-18T22:27:36Z
last_indexed	2023-09-18T22:27:36Z
_version_	1777416071327776768

Thermal Oxidation Process Improved Corrosion in Cobalt Chromium Molybdenum Alloys

Similar Items