Browsing Voon Chun Hong, Assoc. Prof. Dr. by Author "Voon, Chun Hong"
Now showing items 1-7 of 7
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Effect of anodizing parameters on the growth of porous anodic aluminum oxide on al-mn alloys
Voon, Chun Hong; Mohd Nazree, Derman, Dr. (Universiti Malaysia Perlis (UniMAP), 2012-06-18)In this study, the effect of manganese content, anodizing voltage and concentration of electrolyte on pore nucleation process during anodizing was studied from current density versus time transient. It was found that the ... -
Effect of electrolyte concentration on the growth of porous anodic aluminium oxide (AAO) on Al-Mn alloys
Voon, Chun Hong; Mohd Nazree, Derman, Dr. (Trans Tech Publications, Switzerland, 2012-12)In this study, the effect concentration of electrolyte on pore nucleation process during anodizing was investigated. It was found that the concentration of oxalic acid influenced the morphologies and regularities of porous ... -
Effect of manganese content on the fabrication of porous anodic alumina
Voon, Chun Hong; Mohd Nazree, Derman, Dr.; Uda, Hashim, Prof. Dr. (Hindawi Publishing Corporation, 2012)The influence of manganese content on the formation of well-ordered porous anodic alumina was studied. Porous anodic alumina has been produced on aluminium substrate of different manganese content by single-step anodizing ... -
Effect of temperature of oxalic acid on the fabrication of Porous anodic alumina from Al-Mn alloys
Mohd Nazree, Derman, Dr.; Foo, Kai Loong; Khairel Rafezi, Ahmad, Dr.; Uda, Hashim, Prof. Dr.; Voon, Chun Hong (Hindawi Publishing Corporation, 2013)The influence of temperature of oxalic acid on the formation of well-ordered porous anodic alumina on Al-0.5 wt% Mn alloys was studied. Porous anodic alumina has been produced on Al-0.5 wt% Mn substrate by single-step ... -
The Impacts of Platinum Diffusion to the Reverse Recovery Lifetime of a High Power Diode Devices
C.M., Cheh; Mohd Khairuddin, Md Arshad; Ruslinda, Abdul Rahim; C., Ibau; Voon, Chun Hong; Ramzan, Mat Ayub; Uda, Hashim (EDP Sciences, 2016)The reverse recovery lifetime of a diode is one the key parameter in power electronics market. To make a diode with fast switching speed, diodes are often doped with impurities such as gold and platinum to improve its ... -
A simple one-step anodising method for the synthesis of ordered porous anodic alumina
Voon, Chun Hong; Mohd Nazree, Derman, Dr.; Uda, Hashim, Prof. Dr.; Khairel Rafezi Ahmad, Dr.; Ho, Li Ngee (Taylor & Francis, 2014)Porous anodic alumina (PAA) has been produced on aluminium substrate by single-step anodising at 50 V in 0.3 M oxalic acid at 15°C for 60 min. The highly ordered pore and cell structure was achieved by subjecting the PAA ... -
Synthesis of silicon carbide nanotubes from carbon nanotubes and silicon dioxide by microwaves irradiation
Voon, Chun Hong; Mohd Nazri, Derman; Uda, Hashim, Prof. Dr.; Jasni; S., Samad (Universiti Malaysia Perlis (UniMAP)Centre for Graduate Studies, 2010-10-16)In this study, an attempt to fabricate silicon carbide nanotubes (SiCNTs) from the reactions between multiwalled carbon nanotubes (MWCNTs) and silicon dioxide (SiO2) is presented. Shape Memory Synthesis (SMS) method ...