School of Materials Engineering (Articles): Recent submissions

Now showing items 141-160 of 560

    • Evaluate the effects of various surface roughness on the tribological characteristics under dry and lubricated conditions for Al-Si alloy 

      Riyadh A., Al-Samarai; Haftirman, Dr.; Khairel Rafezi, Ahmad, Dr.; Yarub, Al-Douri, Assoc. Prof. Dr. (Scientific Research Publishing Inc. All rights reserved., 2012-07)
      The effect of surface roughness average of hypereutectic aluminum silicon alloys (with 16 wt% Si) on the friction and wear was investigated. Various surface roughness average (Ra) of different degrees was verified as well ...

    • Production of silicon carbide via grinding and heat treatment process 

      Noorina Hidayu, Jamil; Xian, W. Hui; Wan Mohd Arif, Wan Ibrahim; Faizul, Che Pa; Ruhiyuddin, Mohd Zaki (Trans Tech Publications, 2014)
      This study is to determine the properties and characterization of silicon carbide via grinding and heat treatment process. In this study, the raw materials used were waste glass and graphite powder. Silicon carbide was ...

    • Electrochemical characterisation of hybrid activators for aluminium sacrificial anodes in natural sea water 

      Mohd Subhi, Din Yati; Mohd Nazree, Derman, Dr.; Mahdi, Che Isa; Mohd Moesli, Mohammad; Hasril, Nain (Malaysian Citation Centre & Ministry of Education, 2013)
      This paper reports on the electrochemical behaviour of as-cast Al-Zn-Mg alloys activated by tin (Sn) and ruthenium dioxide (RuO2) in natural sea water. The potential and advantages of Sn and RuO2 as hybrid activators in ...

    • FTIR and TGA analysis of biodegradable poly(lactic acid)/treated kenaf bast fibre: Effect of plasticizers 

      Maizatulnisa, Othman; Norazowa, Ibrahim; Wan Md. Zin, Wan Yunus, Dato’ Dr.; Khalina, Abdan; khalisanni, khalid (Universiti Putra Malaysia Press., 2013)
      A biodegradable composite (PLA/KBF blends) was prepared using melt blending technique in a brabender mixer and characterized with FTIR and TGA analyzer. Five percent of triacetin and glycerol contents were used as plasticizers ...

    • Effects of multi-walled carbon nanotubes (MWCNTS) on the mechanical and thermal properties of plasticized polylactic acid nanocomposites 

      Maizatulnisa, Othman, Dr.; Tan, Kok Hui; Mohd Yusof, Hashim; Halisanni, Khalid; Che Mohd Ruzaidi, Ghazali, Prof. Madya; Mohd Nazarudin, Zakaria, Dr; Paridah, Md Tahir, Prof. Dr.; Noor Azlina, Hassan, Dr. (Trans Tech Publications, 2013)
      A multi-walled carbon nanotube (MWCNT)/plasticized polylactic acid (PLA) composite was prepared using a two-roll mill set at 170°C and 50 rev/min. The material was characterized using dynamicmechanical analyzer (DMA). ...

    • Response of functionality graded hydroxyapatite/F-75 in saline solution 0.9% NaCl 

      Noorazimah, Mohd Ab Llah; Shamsul Baharin,  Jamaludin, Prof. Dr.; Nur Hidayah, Ahmad Zaidi (Trans Tech Publications, 2013)
      Functionally graded hydroxyapatite (HAP) /F-75 was fabricated using powder metallurgy technique. Samples fabricated were tested inside 0.9% NaCl to check their bioactivity reaction. After immersed, samples were analyzed ...

    • First principle study of electronic structure, chemical bonding and optical properties of 5-azido-1H-tetrazole 

      Saleem Ayaz, Khan; Ali Hussain, Reshak, Prof. Dr. (Electrochemical Science Group (ESG), 2013)
      First principle calculations were performed to investigate the electronic band structure, density of states, charge density and optical properties of 5-azido-1H-tetrazole. The calculated band structure shows that the ...

    • The effect of sintering temperature to the properties of zinc oxide 

      Lim, J. H.; Yeoh, Cheow Keat, Dr.; Teh, Pei Leng, Dr.; Wan Mohd Arif, Wan Ibrahim; Abdullah, Chik, Prof. Madya Dr. (Trans Tech Publications, 2013)
      In this paper, different sintering temperature used to study the influence of temperature on the structural and thermal properties of zinc oxide (ZnO). On this research, the sample was prepared by solid-state method for ...

    • Correlating composition design and properties of calcined kaolin geopolymeric powder 

      Liew, Yun Ming; Kamarudin, Hussin, Brig. Jen. Dato' Prof. Dr.; Mohd Mustafa Al Bakri, Abdullah; Mohamed, Bnhussain, Prof. Dr.; Luqman, Musa, Dr.; Khairul Nizar, Ismail, Assoc. Prof. Dr.; Che Mohd Ruzaidi, Ghazali, Prof. Madya; Heah, Cheng Yong (American Scientific Publishers, 2013-12)
      This paper discussed the relation between composition design and properties of calcined kaolin geopolymeric powder. Geopolymeric powder was produced by applying the geopolymerization process. The solids-to-liquid ratios ...

    • Properties of metakaolin geopolymeric binder 

      Liew, Yun Ming; Kamarudin, Hussin, Brig. Jen. Dato' Prof. Dr.; Mohd Mustafa Al Bakri, Abdullah; Mohamed, Bnhussain, Prof. Dr.; Luqman, Musa, Dr.; Khairul Nizar, Ismail, Assoc. Prof. Dr.; Che Mohd Ruzaidi, Ghazali, Prof. Madya; Heah, Cheng Yong (American Scientific Publishers, 2013-01)
      This paper investigates the physical and mechanical properties as well as the morphology study of the MK geopolymeric binder. Mixture of waterglass liquid and NaOH solution were used as the activator solution for the ...

    • A study of liberation and separation process of metals from printed circuit boards (PCBS) scraps 

      Aimi Noorliyana, Hashim; Mohd Zaheruddin, Kasmuin; Kamarudin, Hussin, Brig. Jen. Dato' Prof. Dr. (Trans Tech Publications, 2013-12)
      Since the metallic elements are covered with or encapsulated by various plastic or ceramic materials on printed circuit boards (PCBs), a pre-treatment process allowing their liberation and separation is first needed in ...

    • On the structure of shape memory alloys 

      Cristian Acitei, Dragos; Victor Sandu, Andrei; Mohd Mustafa Al Bakri, Abdullah; Petrica, Vizureanu; Alida, Abdullah (Trans Tech Publications, 2013-12)
      The paper presents the obtaining of shape memory alloys, base copper and a diffractometer and microscopic study on some samples. The study was made on CuZnAl samples, obtained by classic casting and educated. The shape ...

    • Sol-gel synthesis and preliminary characterizations of novel silica hybrid xerogels 

      Syed Nuzul Fadzli, Syed Adam; Roslinda, Shamsudin, Dr.; Firuz, Zainuddin (Trans Tech Publications, 2013-12)
      Hybrid silica xerogel mesoporous composite was synthesized by a mild temperature acid catalysed sol-gel route where a natural copolymer; sodium alginate (Na-COOH) together with calcium oxide (CaO) powder were incorporated ...

    • Comparison between single and multi gates for minimization of warpage using taguchi method in injection molding process for ABS material 

      Mohd. Nasir, Mat Saad; Khairul Azwan, Ismail; Shayfull Zamree, Abd Rahim; Norshah Afizi, Shuaib (Trans Tech Publications, 2013-12)
      In this study, a mold is designed in single and dual type of gate in order to investigate the deflection of warpage for thick component in injection molding process. Autodesk Moldflow Insight software was used as a medium ...

    • 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; ...

    • Effect of fly ash/alkaline activator ratio and sodium silicate/NaoH ratio on fly ash geopolymer coating strength 

      Liyana, Jamaludin; Mohd Mustafa Al Bakri, Abdullah; Kamarudin, Hussin, Brig. Jen. Dato' Prof. Dr.; Che Mohd Ruzaidi, Ghazali, Prof. Madya; Azura, Abdul Rashid Assoc. Prof. (Trans Tech Publications, 2013)
      Fly ash geopolymer coating material potential used to protect surface used in exposure conditions. Ratio of fly ash/alkaline activator and Na₂SiO₃/NaOH play important parameter on determining the best flexural strength of ...

    • Effect of space holder and compaction pressure on the porosity of sintered copper 

      Shamsul Baharin, Jamaludin, Prof. Dr.; Chong, Xin Yi; Alida, Abdullah; Kamarudin, Hussin, Brig. Jen. Dato' Prof. Dr. (Trans Tech Publications, 2013)
      The effect of space-holder content on the porosity of sintered copper that was fabricated by powder metallurgy technique has been investigated. Carbamide was used as space-holder and the content selected was 10 wt. %, 20 ...

    • Characterization of porous aluminum fabricated via sintering- dissolution process (SDP) 

      Shamsul Baharin,  Jamaludin, Prof. Dr.; Nik Mohd Fikry, Mohd Rushdi; Alida, Abdullah; Kamarudin, Hussin, Brig. Jen. Dato' Prof. Dr. (Trans Tech Publications, 2013)
      Porous metals that have open pores structure with low density and light weight properties are suitable to be used in many engineering applications. In this work, the porous aluminum was fabricated via sintering dissolution ...

    • Mechanical properties of dissimilar welds between stainless steel and mild steel 

      Shamsul Baharin,  Jamaludin, Prof. Dr.; Mazlee, Mohd Noor, Dr.; Shahzan Kamarul, A. Kadir; Khairel Rafezi, Ahmad, Dr. (Trans Tech Publications, 2013)
      Joining of stainless steel type 304 to mild steel was carried out using a gas tungsten arc welding (GTAW). Samples were welded using stainless steel welding electrode: (AWS: E308l-16) and mild steel welding electrode: (AWS: ...

    • Effect of spot welding current and cycles on the mechanical properties of welded galvanized steel sheets 

      Shamsul Baharin,  Jamaludin, Prof. Dr.; Mazlee, Mohd Noor, Dr.; Muhammad Rifki, Ismail; Khairel Rafezi, Ahmad, Dr.; Kamarudin, Hussin, Brig. Jen. Dato' Prof. Dr. (Trans Tech Publications, 2013)
      Studies on the effects of welding current and cycles were carried on the galvanized steel sheets using spot welding. The welding currents used were 3 kA, 5 kA 6 kA and the welding cycles were 4, 6 and 8. Tensile shear and ...