Browsing Azmi, Rahmat, Assoc. Prof. Dr. by Author "azmirahmat@unimap.edu.my"
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A brief review of layered rock salt cathode materials for lithium ion batteries
Tan, Tze Qing; Soo, Soon Peng; Azmi, Rahmat, Prof.; Shamsul Baharin, Jamaludin, Prof. Dr.; Rozana Aina, Maulat Osman, Dr. ; Zul Azhar, Zahid Jamal, Dato Prof. Dr.; Mohd Sobri, Idris, Dr. (Trans Tech Publications, 2013)Nowadays, many researchers have been studying on the layered rock salt-type structure as cathode materials for the lithium ion batteries. LiCoO2 is the most commonly used cathode material but Co is costly and toxic. Thus, ... -
Comparison of liquid phase sintering and Cu-melt infiltration methods to consolidate 80W-Cu composite using nickel as sintering activator
Hafed, Ibrahim; Azizan, Aziz, Assoc. Prof. Dr.; Azmi, Rahmat, Prof.; Kahtan Sadiq, Muhammed, Dr. (Trans Tech Publications, 2013)In this article, studies were conducted to evaluate the densification of W- Cu sintered compacts produced using two methods; liquid phase sintering (LPS) and combination of liquid phase sintering and liquid infiltration ... -
Development of dense hydroxyapatite-ni by modified electroless deposition technique.
Sri Asliza, Md Amin; Mohd Zaheruddin, Kasmuin; Azmi, Rahmat, Dr.; Shamsul Baharin, Jamaludin, Prof. Dr.; Khairel Rafezi, Ahmad, Dr. (Trans Tech Publications, 2014)Ni deposited on HA powder was prepared by electroless plating process without sensitization and activation treatment. The deposited powder obtained was characterized by energy dispersive spectroscopy (EDX) and x-ray ... -
Effect of copper (II) acetate pretreatment on zinc phosphate coating morphology and corrosion resistance
Khalid, Abdalla; Azmi, Rahmat, Assoc. Prof. Dr.; Azizan, Aziz, Assoc. Prof. Dr. (Springer US, 2013)Zinc phosphate coating is widely used for corrosion protection of metallic materials, mainly mild steel. In the present study, the effect of pretreatment with copper acetate solution on zinc phosphate layer properties was ... -
Effect of different nickel content on the mechanical properties of hydroxyapatite-ni composites from coated powders
Sri Asliza, Md Amin; Mohd Zaheruddin, Kasmuin; Azmi, Rahmat, Dr.; Shamsul Baharin, Jamaludin, Prof. Dr.; Khairel Rafezi, Ahmad, Dr. (Trans Tech Publications, 2014)HA-Ni composites were fabricated by uniaxial pressing from coated powders, in which HA particles were successfully coated with nickel precursor by the electroless deposition method. The compacted powders sintered at ... -
The effect of iron fillings waste contents on the attenuation level of anti-radiation shielding concrete
Ali Basheer, Azeez; Kahtan Sadiq, Muhammed, Dr.; Mohd Mustafa Al-Bakri, Abdullah; Azmi, Rahmat, Prof. (Trans Tech Publications, 2013)Shielding concretes of different iron filling contents were assessed for their anti radiation attenuation properties. The measurements have been performed by using gamma spectrometer of NaI (Tl) detector, the sources were ... -
The effect of pH on zinc phosphate coating morphology and its corrosion resistance on mild steel
Khalid, Abdalla; Azmi, Rahmat, Prof. Madya Dr; Azizan, Aziz, Assoc. Prof. Dr. (Trans Tech Publications, 2013)Zinc phosphate coating is commonly used for corrosion protection of metallic materials, mainly mild steel. In this study, influence of the pH of phosphating bath on the surface morphology and corrosion resistance of zinc ... -
Effects of composition on the mechanical properties and microstructural development of dilute 6000 series alloys
Azmi, Rahmat, Assoc. Prof. Dr.; Ismail, Zainol; Aiza, Jaafar; Zuhailawati, Hussain, Assoc. Prof. Dr. (Asian Network for Scientific Information (ANSINET), 2012)The aim of the present investigation is to study the effect of composition on the mechanical properties and microstructural development during thermal treatment of some dilute 6000 aluminium alloys. The alloys were based ... -
The effects of Fe additions on the liquid phase sintering of W- bronze composites
Kahtan Sadiq, Muhammed, Dr.; Azmi, Rahmat, Assoc. Prof. Dr.; Ahmad Badri, Ismail (Elsevier BV, 2009)In this investigation, experiments were conducted to evaluate the effects of Fe additives in the range of 1-5 wt.% on the densification of different compositions of W-pre-alloy bronze compacts sintered isothermally at ... -
Electrochemical corrosion behaviour of Mg-(Ca,Mn) sacrificial anodes
Shaiful Rizam, Shamsudin; Azmi, Rahmat, Assoc. Prof. Dr.; Mahdi, Che Isa; Mohd Nazree, Derman; Abdul Razak, Daud (Trans Tech Publications, 2013)The aim of the study is to identify the effect of Ca in Mg-Mn alloy on electrochemical corrosion behavior for the development of high performance sacrificial anode. Mg alloys were fabricated by casting technique under an ... -
Electrochemical corrosion behaviour of Mg-(Ca,Mn) sacrificial anodes
Shaiful Rizam, Shamsudin; Azmi, Rahmat, Assoc. Prof. Dr.; Mahdi, Che Isa; Mohd Nazree, Derman, Dr.; Abdul Razak, Daud (Trans Tech Publications, 2013)The aim of the study is to identify the effect of Ca in Mg-Mn alloy on electrochemical corrosion behavior for the development of high performance sacrificial anode. Mg alloys were fabricated by casting technique under an ... -
Electrochemical measurement of PBS using cyclic voltammetry and AAO fabricated at ambient temperature and low potential
Alaba Oladeji, Araoyinbo; Mohd Nazree, Derman, Dr.; Azmi, Rahmat, Prof.; Khairel Rafezi, Ahmad, Dr. (Trans Tech Publications, 2013)Anodic aluminium oxide fabricated at ambient temperature and low potential in phosphoric acid electrolyte was used as the working electrode for the electrochemical measurement of phosphate buffer saline under different pH ... -
The factors affecting the swelling of W–bronze composite system at different sintering conditions
Kahtan S, Muhammed, Dr.; Azmi, Rahmat, Prof. (Scientific.Net, 2012-12)During sintering of Wbronze metal matrix composites, the difference in the interdiffusuion path, sintering atmosphere and alloying element might be the source of the swelling phenomenon. In this study, the factors lead to ... -
The influence of deposition temperature on the morphology and corrosion resistance of zinc phosphate coating on mild steel
Khalid, Abdalla; Azmi, Rahmat, Prof. Madya Dr.; Azizan, Aziz, Assoc. Prof. Dr. (Trans Tech Publications, 2013)The influence of phosphating temperature on the surface morphology and corrosion resistance of zinc phosphate coatings on mild steel was investigated. The phosphate layers were deposited on steel from phosphating bath at ... -
Kinetic study of the hydrothermal reaction between lime and rice-husk-ash silica
Khangaonkar, P R; Azmi, Rahmat, Assoc. Prof. Dr.; Jolly Kutty, K. G. (Elsevier Limited, 1992)The paper describes a study of the reaction between lime and amorphous silica obtained from rice-husk (93-94% SiO2) under hydrothermal conditions, in the range 80-140°C. The progress of the reaction, conducted in stainless ... -
Preparation and characterization of Co-HA powder using modified electroless method
Mohd Zaheruddin, Kasmuin; Sri Asliza, Md Amin; Azmi, Rahmat, Prof. Madya Dr.; Shamsul Baharin, Jamaludin, Prof. Dr.; Khairel Rafezi, Ahmad, Dr. (Trans Tech Publications, 2014)C0-HA composite produced by simple electroless deposition method was studied. From the particle size analysis by Malvern particles analyzer its shows that 19% increment in average of the particle size powder increase after ... -
The role of the activator rich-W interboundary layer on liquid phase sintering of W-pre-alloy bronze composites of Fe and Co additions
Kahtan S, Muhammed, Dr.; Azmi, Rahmat, Prof. (Elsevier B.V., 2012-11)In this study, the effects of 1-3 wt.% Fe and Co additions on the sintering of W 40-80wt.%-pre-alloy bronze Sn 10 wt.%-Cu compacts were examined. The isothermal part of the sintering process was conducted at temperatures ... -
Room temperature anodization of aluminum and the effect of the electrochemical cell in the formation of porous alumina films from acid and alkaline electrolytes
Alaba Oladeji, Araoyinbo; Azmi, Rahmat, Assoc. Prof. Dr.; Mohd Nazree, Derman, Dr.; Khairel Rafezi, Ahmad, Dr (VBRI Press, 2012)Nanoporous alumina was produced by anodic oxidation of aluminum in both acidic and alkaline electrolytes. Previous reports indicate that nanoporous aluminais mainly produced from strongly acidic electrolytes, and with the ... -
Sintering effects on mechanical properties of Co-HA composite prepared by modified electroless deposition.
Mohd Zaheruddin, Kasmuin; Sri Asliza, Md Amin; Azmi, Rahmat, Dr.; Shamsul Baharin, Jamaludin, Prof. Dr.; Khairel Rafezi, Ahmad, Dr. (Trans Tech Publications, 2014)Co-HA composite produced using electroless deposition without conventional sensitization and activation treatment was studied with varying sintering temperature (1100°C, 1200°C and 1250°C). The particles size, bulk density, ... -
A study on relationship between porosity and compressive strength for geopolymer paste
Farah Farhana, Zainal; Kamarudin, Hussin, Brig. Jen. Dato' Prof. Dr.; Azmi, Rahmat, Prof.; Mohd Mustafa Al-Bakri, Abdullah (Trans Tech Publications, 2013-12)This paper presents a study on the relationship between porosity and compressive strength for geopolymer paste. In this research, geopolymer paste was made from fly ash class F based geopolymer mixed with alkaline activator; ...