Browsing by Author "zaidi@eng.ukm.my"

Now showing items 1-7 of 7

    • Different concentration of Al(No₃)₃ In Zro₂/Al₂o₃ double layer coating steel prepared by electrolytic method 

      Siti Hawa, Mohamed Salleh; Mohd Nazree, Derman, Dr.; Mohd Zaidi, Omar; Rohaya, Abdul Malek (Trans Tech Publications, 2014)
      Stainless steels, such as 440C steel are commonly used for engineering applications. The high carbon contents of this steel have significantly been attributed to low corrosion resistance properties. Surface modification ...

    • Effect of deposition time on properties of ZrO2 coating prepared using electrolytic method 

      Siti Hawa, Mohamed Salleh; Terng, Lim Wuh; Mohd Nazree, Derman, Dr.; Mohd Zaidi, Omar; Salmie Suhana, Che Abdullah (Trans Tech Publications, 2013)
      AISI 440C martensitic stainless steel is one of the most widely studied engineering materials for its tribological properties. It is capable of attaining the best mechanical properties such as high strength and hardness ...

    • Effect of heat treatment on Ni-P-Cg(Graphite)-SiC composite coated cast AlSi alloy 

      Zainal Arifin, Ahmad; Mukridz, Md Mohtar, Engr.; Zaidi, Mohd Ripin, Dr. (Trans Tech Publications, 2013)
      The study presents the effect of heat treatment on electroless N-P-Cg-SiC composite coated cast AlSi (ADC12) alloy. No significant changes are noted on the average surface roughness and surface morphology of the coating ...

    • Electroless Ni-P-Cg(Graphite)-SiC composite coating on cast AlSi alloy 

      Mukridz, Md Mohtar, Engr.; Zaidi, Mohd Ripin, Dr.; Zainal Arifin, Ahmad (Trans Tech Publications, 2013)
      The study presents the electroless N-P-Cg-SiC composite coating on cast AlSi (ADC12) alloy where the bath temperature is maintained at 90°C, pH level is controlled between 4.5 to 5.0 and stirred at 450 rpm with mechanical ...

    • Microstructural characterization of ZrO2 layer coating on martensitic stainless steel 

      Siti Hawa, Mohd Salleh; Mohd. Zaidi, Omar, Prof. Madya Dr.; Mohd Nazree, Derman, Dr.; Salmie Suhana, Che Abdullah (Trans Tech Publications, 2012)
      High carbon steel stainless steel such as 440C martensitic stainless steel, are commonly used for automotive components, such as ball bearings, races, gage blocks and valve. In this study, 440C steel was coated with ZrO2 ...

    • Microstructure and properties of heat-treated 440C martensitic stainless steel 

      Siti Hawa, Mohamed Salleh; Mohd Nazree, Derman, Dr.; Mohd Zaidi, Omar; Junaidi, Syarif; Shahrum, Abdullah (Trans Tech Publications, 2013-02)
      440C martensitic stainless steels are widely used because of their good mechanical properties. The mechanical properties of 440C martensitic stainless steel were evaluated after heat treatment of these materials at various ...

    • Surface morphology and corrosion behavior of electrolytic coatings in different aqueous solutions 

      Siti Hawa, Mohamed Salleh; Mohd Nazree, Derman, Dr.; Mohd Zaidi, Omar; Rohaya, Abdul Malek (Trans Tech Publications, 2014)
      ZrO₃/AI₂O₃, AI₂O₃/Y₂O₃, ZrO₂/Y₂O₃ coatings were applied on SS440C steel substrates via an electrolytic double layer coating process. The effect of these different ceramic aquecous solutions on the surface morphology and ...