Mohd Zaheruddin Kasmuin
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Preferred name
Mohd Zaheruddin Kasmuin
Official Name
Mohd Zaheruddin , Kasmuin
Alternative Name
Kasmuin, M. Z.
Mohd Zaheruddin, Kasmuin
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Scopus Author ID
55992730700
Researcher ID
CWU-1619-2022

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  • Publication
    The effect of additives to the densification of natural hydroxyapatite
    (Universiti Malaysia Perlis (UniMAP), 2010-06-09)
    Sri Asliza M. A
    ;
    Shahrizal H
    ;
    Mohd Zaheruddin Kasmuin
    ;
    Azida Azmi
    The effect of different additives to the microstructure and phase properties of compact natural hydroxyapatite was studied. Compact HA was fabricated from HA powder obtained from bovine bones via calcinations and grinding processes. The sintering temperatures 1150oC and 1200oC were applied to increase the densification behaviour of natural HA. In this study, the effects of MgO and BaO to the microstructure and mechanical properties of natural HA were also being investigated. From the result, BaO increased the densification and microstructure developments of sintered natural HA. The average grain size distribution of 1.5μm can be clearly seen from the microstructure at temperature 1200oC for specimen doped BaO. However the density of specimen doped MgO give lower value of 57 % compared to pure natural HA. Thus, from the microstructure results, the MgO decreased the sintering rate of natural HA. On the other hand, the BaO increased the sinterability of specimen.
  • Publication
    Synthesis and process evaluation of calcium phosphate coatings depositions on pure magnesium via simple chemical conversion method
    (Universiti Malaysia Perlis (UniMAP), 2018-12)
    Mohd Amin Farhan Zaludin
    ;
    Zul Azhar Zahid Jamal
    ;
    Mohd Nazree Derman
    ;
    Azmi Rahmat
    ;
    Mohd Zaheruddin Kasmuin
    Simple chemical conversion has been employed in order to coat calcium phosphates (CaP) on magnesium (Mg) substrate. The Mg substrates were coated in a primary phosphating bath before secondary treated with an alkaline solution of sodium hydroxide, NaOH. In this paper, the fabrication process of the coatings via simple chemical conversion method were discussed and evaluated in terms of electrochemical, phase analysis, and microstructural aspects. XRD diffractogram confirmed that the primary coating composed of dicalcium phosphate dehydrates (DCPD) and after the secondary treatment, the DCPD transformed into more stable hydroxyapatite, HA. The microstructural observations show that the coating is composed of flower-like shape crystallites. Besides, the potential-time curves of both primary and secondary coated samples suggests that the minimum deposition time for better coverage of the coatings is 30 minutes.
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