Browsing School of Materials Engineering (Articles) by Author "Zainal Arifin, Ahmad"
Now showing items 1-14 of 14
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Characterization of Sn-3.5Ag-1.0Cu lead-free solder prepared via powder metallurgy method
Iziana, Yahya; Noor Asikin, Ab Ghani; Mohd Arif Anuar, Mohd Salleh; Hamidi, Abd Hamid; Zainal Arifin, Ahmad; Mayappan, Ramani (Scientific.Net, 2012-04-12)The toxicity in the Sn-Pb solder has promoted the development of Pb-free solder in the electronics industries. Among the Pb-solders, the Sn-3.5Ag-1.0Cu solder is considered a potential replacement and being studied by many ... -
Compressive and wear resistance of alumina reinforced fe-cr matrix composites
Saidatulakmar, Shamsuddin; Shamsul Baharin, Jamaludin, Prof. Dr.; Zuhailawati, Hussain; Zainal Arifin, Ahmad (Scientific.Net, 2012-12)Fe-Cr matrix composite reinforced with alumina with mean powder sizes of 13, 23, 24 and 64 μm was successfully obtained through powder metallurgy method. The powder mixture were blended at a rotating speed of 250 rpm for ... -
Crystal structure of single phase and low sintering temperature of α-cordierite synthesized from talc and kaolin
Banjuraizah, Johar; Hasmaliza, Mohamad; Zainal Arifin, Ahmad (Elsevier B.V., 2009-08)Cordierite body with the formulation of 2.8MgO·1.5Al2O3·5SiO2 was prepared from talc and kaolin as the basic raw materials. Following glass crystallization technique the glass powder was successfully heat treated at 900 ... -
Effect of excess mgo mole ratio in a stoichiometric cordierite (2MgO·2Al2O3·5SiO 2) composition on the phase transformation and crystallization behavior of magnesium aluminum silicate phases
Banjuraizah, Johar; Hasmaliza, Mohamad; Zainal Arifin, Ahmad (The American Ceramic Society, 2011-05)The effect of excess MgO, 2.0-4.0 mol ratios on the crystallization behavior and purity of Iμ-cordierite was investigated using X-ray diffraction (XRD), differential thermal analyzer, and TGA. Quantitative XRD, the Rietveld ... -
Effect of impurities content from minerals on phase transformation, densification and crystallization of α-cordierite glass-ceramic
Banjuraizah, Johar; Hasmaliza, Mohamad; Zainal Arifin, Ahmad (Elsevier B.V., 2011-07-14)α-Cordierite glass-ceramic was produced through crystallization of glass compacts made of milled glass frits. A comparative investigation between two different initial raw materials to synthesize α-cordierite glass-ceramic ... -
The effect of loading rates and particle geometry on compressive properties of polypropylene/zinc oxide nanocomposites: Experimental and numerical prediction
Mohd Firdaus, Omar; Hazizan, Md Akil; Zainal Arifin, Ahmad; Shahrom, Mahmud, Dr. (Society of Plastics Engineers, 2012-01)Compressive properties, of particulate filled polymer matrix composites, are affected (to a certain extent) by the geometry of the particles, as well as the loadingrates. Therefore, this article presents the results on the ... -
Effect of molecular structures on dynamic compression properties of polyethylene
Mohd Firdaus, Omar; Hazizan, Md Akil; Zainal Arifin, Ahmad (Elsevier B.V., 2012-03)The properties of polymers are strongly affected by their molecular structures. Therefore, three different types of polyethylene; low density, low-linear density and high density polyethylene were used in this study to ... -
Effect of particle sizes on rate sensitivity and dynamic mechanical properties of polypropylene/silica (PP/Sio2) nanocomposites
Mohd Firdaus, Omar; Hazizan, Md Akil; Zainal Arifin, Ahmad (Trans Tech Publications, 2012)Filler-related characteristic such as particle size, shape and geometry are essential factors that need to be considered during the evaluation of the material's performance especially in the area of particle filled composites. ... -
Microstructure evolution of Sn-3.5Ag-1.0Cu-0.5Ni/Cu system lead free solder under long term thermal aging
Noor Asikin, Ab Ghani; Iziana, Yahya; Mohd Arif Anuar, Mohd Salleh; Saidatulakmar, Shamsuddin; Zainal Arifin, Ahmad; Ramani, Mayappan (Scientific.Net, 2012-12)Due to environmental concerns, lead-free solders were introduced in replacing the lead-based solders in microelectronics devices technology. Although there are many lead-free solder available, the Sn-Ag-Cu solder was ... -
Particle size – dependent on the static and dynamic compression properties of polypropylene/silica composites
Mohd Firdaus, Omar; Hazizan, Md Akil; Zainal Arifin, Ahmad (Elsevier, 2013-03)The effect of particle size is widely known as an essential factor that influences the mechanical properties of particulate filled polymer composites. However, there is a limited number of works available, on the particular ... -
The sensing mechanism and detection of low concentration acetone using chitosan-based sensors
Tulus Ikhsan, Nasution; Irwana, Nainggolan, Dr.; Sabar Derita, Hutagalung, Dr.; Khairel Rafezi, Ahmad, Dr.; Zainal Arifin, Ahmad (Elsevier B. V., 2013)This paper aims to discuss the usage of chitosan film sensors to detect acetone concentrations in human breath, in order to precisely diagnose diabetes mellitus in patients. Acetone concentration in the breath varies from ... -
Static and dynamic compressive properties of mica/polypropylene composites
Mohd Firdaus, Omar; Hazizan, Md Akil; Zainal Arifin, Ahmad (Elsevier B. V., 2011-01-25)The static and dynamic properties of mica/polypropylene composites, with a mica content of 10, 15, 20% by weight, were studied at different levels of strain rates (from 10s-4 to 10s2), using a conventional Universal Testing ... -
Synthesis and characterization of xMgO-1.5Al2O3-5SiO2 (x = 2.6-3.0) system using mainly talc and kaolin through the glass route
Banjuraizah, Johar; Hasmaliza, Mohamad; Zainal Arifin, Ahmad (Elsevier B.V., 2011-10-03)Three non-stoichiometric cordierite with compositions of xMgO-1.5Al2O3-5SiO2 (x = 2.6-3.0 mol) were synthesized using mainly talc and kaolin through the glass route. The densification and crystallization behaviors of these ... -
Thermal expansion coefficient and dielectric properties of non-stoichiometric cordierite compositions with excess MgO mole ratio synthesized from mainly kaolin and talc by the glass crystallization method
Banjuraizah, Johar; Hasmaliza, Mohamad; Zainal Arifin, Ahmad (Elsevier B. V., 2010-04-02)α-Cordierite phase in non-stoichiometric cordierite formulations was synthesized using mainly kaolin and talc, without sintering aids, via the glass crystallization route. MgO mole ratios in the formulations were varied ...