Browsing Azmi, Rahmat, Assoc. Prof. Dr. by Issue Date
Now showing items 1-20 of 26
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Kinetic study of the hydrothermal reaction between lime and rice-husk-ash silica
(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 ... -
The effects of Fe additions on the liquid phase sintering of W- bronze composites
(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 ... -
Effect of Mg, Si and Cu content on the microstructure of dilute 6000 series aluminium alloys
(Elsevier B.V., 2011-09-01)The effect of Mg, Si and Cu content on the microstructural development during ageing treatment of dilute 6000 series alloys have been investigated using transmission electron microscopy (TEM). Four dilute alloys were used ... -
Room temperature anodization of aluminum and the effect of the electrochemical cell in the formation of porous alumina films from acid and alkaline electrolytes
(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 ... -
Effects of composition on the mechanical properties and microstructural development of dilute 6000 series alloys
(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 role of the activator rich-W interboundary layer on liquid phase sintering of W-pre-alloy bronze composites of Fe and Co additions
(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 ... -
The factors affecting the swelling of W–bronze composite system at different sintering conditions
(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 ... -
Comparison of liquid phase sintering and Cu-melt infiltration methods to consolidate 80W-Cu composite using nickel as sintering activator
(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 ... -
A brief review of layered rock salt cathode materials for lithium ion batteries
(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, ... -
Electrochemical corrosion behaviour of Mg-(Ca,Mn) sacrificial anodes
(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 ... -
The effect of pH on zinc phosphate coating morphology and its corrosion resistance on mild steel
(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 ... -
Electrochemical measurement of PBS using cyclic voltammetry and AAO fabricated at ambient temperature and low potential
(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 influence of deposition temperature on the morphology and corrosion resistance of zinc phosphate coating on mild steel
(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 ... -
Electrochemical corrosion behaviour of Mg-(Ca,Mn) sacrificial anodes
(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 ... -
Effect of copper (II) acetate pretreatment on zinc phosphate coating morphology and corrosion resistance
(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 ... -
The effect of iron fillings waste contents on the attenuation level of anti-radiation shielding concrete
(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 various waste materials' contents on the attenuation level of anti-radiation shielding concrete
(MDPI, Basel, Switzerland, 2013)Samples of concrete contain various waste materials, such as iron particulates, steel balls of used ball bearings and slags from steel industry were assessed for their anti-radiation attenuation coefficient properties. The ... -
Sintering behavior and microstructure evolution of mechanically alloyed W–bronze composite powders by two-step ball milling process
(Elsevier, 2013-01)The miscibility of W in Sn and Cu is extremely poor. Sintering of W–bronze composites to their full density is proved to be difficult. To tackle this problem, the ball milling process of the W–bronze powder mixture proposed ... -
Self-compacting high density tungsten-bronze composites
(Elsevier, 2013-07)Green compacts of W–bronze were encapsulated in shells of bronze powder, placed in a ceramic mold and sintered in alumina tube furnace at 1150 °C. Throughout the sintering cooling stage the differential coefficient of ... -
A study on relationship between porosity and compressive strength for geopolymer paste
(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; ...