Effect of Nitriding Temperature and Nitriding Time on MgAZ91D Alloy / Wan Amirul Shafiz Wan Zulkifli...[et al.]

Wan Zulkifli, Wan Amirul Shafiz and Mohd Rosli, Zulkifli and Mohamad Juoi, Jariah and Yusuf, Yusliza (2017) Effect of Nitriding Temperature and Nitriding Time on MgAZ91D Alloy / Wan Amirul Shafiz Wan Zulkifli...[et al.]. Journal of Mechanical Engineering (JMechE), SI 3 (2). pp. 177-184. ISSN 18235514

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Abstract

Magnesium and its alloys are widely applied in the automotive industries, electronic and telecommunication industries due to its low densities and excellent strength to the weight ratio. However, it possesses a low surface hardness which can weaken the adhesion properties, especially when hard coating is applied. The need of hard coating is crucial to enhance its corrosion resistance. In this work, nitriding process was carried out to modify the surface properties of MgAZ91D in enhancing its corrosion resistance. The nitriding process was conducted using a high-temperature furnace with the nitrogen gas flow at a constant rate of 5scfh. Three nitriding temperatures were set which were at 300°C, 400°C, and 500°C, for a nitriding period of 1 and 2 hours respectively. Analysis on the surface roughness of the nitrided MgAZ91D was then conducted using MitutoyoSJ410 profilometer. Surface hardness and case depth of the nitride MgAZ91D was analyzed using MitutoyoVicker’s microhardness testing machine. The results showed that the surface hardness, surface roughness, grain size and the case depth of the nitrided MgAZ91D increased through the increase as the process temperature and time. However, the effect of grain size on the case depth hardness is not significant. Thus, the process temperature and time of nitriding MgAZ91D is crucial to be investigated to obtain the right combinations between the surface hardness, surface roughness and case depth for corrosion applications.

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Item Type: Article
Creators:
Creators
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Wan Zulkifli, Wan Amirul Shafiz
UNSPECIFIED
Mohd Rosli, Zulkifli
UNSPECIFIED
Mohamad Juoi, Jariah
UNSPECIFIED
Yusuf, Yusliza
UNSPECIFIED
Subjects: T Technology > TJ Mechanical engineering and machinery
T Technology > TJ Mechanical engineering and machinery > Machine design and drawing
T Technology > TJ Mechanical engineering and machinery > Machine construction (General)
Divisions: Universiti Teknologi MARA, Shah Alam > Faculty of Mechanical Engineering
Journal or Publication Title: Journal of Mechanical Engineering (JMechE)
UiTM Journal Collections: UiTM Journal > Journal of Mechanical Engineering (JMechE)
ISSN: 18235514
Volume: SI 3
Number: 2
Page Range: pp. 177-184
Item ID: 38695
Uncontrolled Keywords: Nitriding, MgAZ91D, Case Depth, Grain Size
URI: https://ir.uitm.edu.my/id/eprint/38695

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38695

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