Browsing Journal Articles by Subject "Microstructure"

Now showing items 1-20 of 25

    • Case Carburizing Behaviour of Sintered Phosphorus-Containing Ternary Ferrous Powder Compacts 

      Mohammed Misbahul, Amin; A. U., Malik; Md. Hamiuddin (Z.H. College of Engineering and Technology, Aligarh Muslim University, India, 1983)
      The carburizing response of sintered compacts of iron containing phosphorus (0.6%), nickel or molybdenum (2% to 4%) and copper (2% to 4%) has been studied. Hardness variation from case to core was measured for sintered and ...

    • Characterisation at the bonding zone between fly ash based geopolymer repair materials (GRM) and ordinary portland cement concrete (OPCC) 

      Warid Wazien, Ahmad Zailani; Mohd Mustafa Al Bakri, Abdullah; Mohd Fadzil, Arshad; Rafiza, Abd Razak; Muhammad Faheem, Mohd Tahir; Remy Rozainy, Mohd Arif Zainol; Nabiałek, Marcin; Sandu, Andrei Victor; Wysłocki, Jerzy J.; Błoch, Katarzyna (MDPI AG, 2020-12)
      In recent years, research and development of geopolymers has gained significant interest in the fields of repairs and restoration. This paper investigates the application of a geopolymer as a repair material by implementation ...

    • Characteristics of Fe-yttria composites fabricated by powder metallurgy method 

      Marina, Marzuki; Kartini, Alir; Wan Abdul Rahman Assyahid, Wan Ibrahim; Nooraizedfiza, Zainon; Mohd Asri, Selamat; Mohd Zamzuri, Mohammad Zain (Trans Tech Publications, 2013)
      This study is focused on fabricating and characterizing iron (Fe) composites prepared by powder metallurgy route reinforced with varying weight of Yttria (Y2O3). Composites were prepared based on 5 wt. % to 15 wt. % of ...

    • Comparative characterization of Clinker’s microstructure at different temperature zone during cement production 

      Mohd Sobri, Idris; Khairul Nizar, Ismail; Shamsul Baharin, Jamaludin; Che Mohd Ruzaidi, Ghazali; Kamarudin, Hussin (Science Publications, 2007)
      Temperature is an important parameter for transformation of minerals in clinker during cement productions. It influences the formation of alite from belite during calcinations and clinkering processes. The result of ...

    • Comparative Characterization of Clinker’s Microstructure at Different Temperature Zone during Cement Production 

      Mohd Sobri, Idris; Khairul Nizar, Ismail; Shamsul Baharin, Jamaludin; Che Mohd Ruzaidi, Ghazali; Kamarudin, Hussin (Science Publications, 2007)
      Temperature is an important parameter for transformation of minerals in clinker during cement productions. It influences the formation of alite from belite during calcinations and clinkering processes. The result of ...

    • Diffusion mechanism of silver particles in polymer binder for die attach interconnect technology 

      Siti Rahmah, Esa; Genesia, Omar; Siti Hajar, Sheikh Md Fadzullah; Kim, S. Siow; B. Abdul Rahim; B. Çoşut (Universiti Malaysia Perlis (UniMAP), 2020-05)
      Sintered Ag has gained strong interest as an important alternative material for interconnect technology in wide bandgap (WBG) semiconductor industries specifically for high thermal dissipations and high-speed applications. ...

    • Effect of curing regimes on metakaolin geopolymer pastes produced from geopolymer powder 

      Liew, Yun Ming; Kamarudin, Hussin, Brig. Jen. Dato' Prof. Dr.; Mohd Mustafa Al Bakri, Abdullah; Mohammed, Bnhussain; Luqman, Musa; Khairul Nizar, Ismail, Prof. Madya Dr.; Che Mohd Ruzaidi, Ghazali, Prof. Madya; Cheng, Yong Heah (Scientific.Net/Trans Tech Publications, 2012-12)
      The properties of metakaolin geopolymer paste are affected by the alkali concentration, the initial raw materials, solidification process, and amount of mixing water as well as the curing conditions. This study aimed to ...

    • Effect of Mg, Si and Cu content on the microstructure of dilute 6000 series aluminium alloys 

      Aiza, Jaafar; Azmi, Rahmat, Prof. Madya Dr.; Zuhailawati, Hussain, Prof. Madya Dr.; Ismail, Zainol, Prof. Madya Dr. (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 ...

    • Effect of milling time on the microstructure and dielectric properties of chitosan nanopowder 

      Kartika, Sari; Agung Bambang Setio Utomo; Kamsul, Abraha; Roto; Evvy, Kartini; Evi, Yulianti; Edi, Suharyadi (Universiti Malaysia Perlis, 2020-01)
      The effect of milling time on the microstructure of chitosan nanopowder had been investigated. This study fabricated chitosan nanopowder via ball milling at different milling time. The milling time used were 0, 60, 180 and ...

    • The effects of Al2O3 amount on the microstructure and properties of Fe-Cr matrix composites 

      Saidatulakmar, Shamsuddin; Shamsul Baharin, Jamaludin, Prof. Dr.; Zuhailawati, Hussain; Zainal Ariffin, Ahmad (Springer, 2010-12)
      Iron based matrix composites reinforced with 5 to 25 wt pct of Al2O3 particles were fabricated using the powder metallurgy method. The samples were prepared by mixing at 250 rpm for 30 minutes, uniaxially pressing at 750 ...

    • Effects of cobalt addition and temperature on microstructure and density of w-25Cu composites prepared via liquid infiltration 

      Hafed, Ibrahim; Azizan, Aziz; Azmi, Rahmat (Trans Tech Publications, 2012-12)
      In this study, the effect of Co and sintering temperature on microstructure of W-25Cu composites prepared via copper melt infiltration has been investigated. The concentration of Co addition used ranged from 0.5 to 3wt. ...

    • Enhanced liquid-phase sintering of W–Cu composites by liquid infiltration 

      Hafed, Ibrahim; Azizan, Aziz; Azmi, Rahmat (Elsevier, 2014-03)
      Full-density of consolidated W–Cu composites produced via conventional sintering method is difficult to achieve. In this work, fully-dense W–Cu composites were developed via the combination of the liquid phase sintering ...

    • The evolutions of microstructure in pressureless Sintered Silver die attach material 

      S.R., Esa; G., Omar; S.H. Sheikh, Md Fadzullah; K.S Siow; B., Abdul Rahim (Universiti Malaysia Perlis (UniMAP), 2021-04)
      Sintered silver (Ag) is one of the most promising interconnect materials for high temperature electronics applications due to its potential to withstand harsh and extreme environments. This paper investigates the microstructure ...

    • General properties of kaolin geopolymers 

      Heah, Cheng Yong; 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; Liew, Yun Ming (American Scientific Publishers, 2013-01)
      This paper reported the properties of kaolin geopolymers in term of the bulk density, compressive strength, qualitative observation and SEM analysis of the kaolin geopolymers. Kaolin geopolymers were synthesized through ...

    • Influence of sintering temperature on density, hardness, shrinkage and microstructure of Alumina-Zirconia cutting tool 

      A. A. Anis; A. B. Hadzley; A. A Umar; T. Norfauzi; M. R. Fairuz; S. G. Herawan; K. Thongkaew (Universiti Malaysia Perlis (UniMAP), 2021-08)
      The confederation of Alumina (Al2O3) and Zirconia (ZrO2) has emerged as a promising ceramic framework for advanced machine tool applications. The mechanical properties of the Al2O3-ZrO2 cutting tool are critically dependent ...

    • Microstructure and interface analysis of glass particulate reinforced aluminum matrix composite 

      Shamsul Baharin,  Jamaludin, Prof. Dr.; Hadipramana, Josef; Mohd Fitri, Mohamad Wahid; Kamarudin, Hussin, Brig. Jen. Dato' Prof. Dr.; Azmi, Rahmat, Prof. (Trans Tech Publications (TTP), 2013)
      A characterization of microstructure and interface was made on the composites Al- 4% Cu reinforced with 15 wt. % glass particulate. The composite was fabricated by powder metallurgy followed by solution treatment and ...

    • Microstructure and microhardness properties of Fe-Cr-Al2O3 composites 

      Saidatulakmar, Shamsuddin; Shamsul Baharin, Jamaludin, Prof. Dr.; Zuhailawati, H.; Zainal Arifin, A. (Universiti Putra Malaysia (UPM), 2010)
      The requirement for high performance materials of high wear and corrosion resistance lead to an increasing interest in ferrous matrix composites. Metal matrix composite of iron-chromium reinforced with alumina was fabricated ...

    • Microstructure study on optimization of high strength fly ash based geopolymer 

      Mohd Mustafa Al Bakri, Abdullah; Kamarudin, Hussin, Brig. Jen. Dato' Prof. Dr.; Mohamed, Bnhussain, Prof. Dr.; Khairul Nizar, Ismail, Assoc. Prof. Dr.; Rafiza, Abdul Razak; Zarina, Yahya (Trans Tech Publications, 2012)
      The compressive strength and microstructural characteristics of fly ash based geopolymer with alkaline activator solution were investigated. The sodium hydroxide and sodium silicate were mixed together to form an alkaline ...

    • Microstructure, Properties and Fracture Mechanism of Al 2014 Reinforced with Alumina Particles 

      Mazlee Mohd Noor; Shamsul Baharin Jamaludin (Kolej Universiti Kejuruteraan Utara Malaysia, 2004)
      The studies of microstructure, properties and fracture mechanism have been conducted on Al 2014 matrix alloy reinforced with 10 volume percent (Composite 1) and 15 volume percent (Composite 2) of alumina (Al2O3) particles ...

    • Microstructures study on cuprous oxide thin films deposited on different substrates by using sol-gel technique 

      Dewi Suriyani, Che Halin; Ibrahim, Abu Talib; Haiza, Haroon; Abdul Razak, Daud; Muhammad Azmi, Abd Hamid (Scientific.Net/Trans Tech Publications, 2012-12)
      Cuprous oxide (Cu₂O) thin films were formed onto three different substrates such as indium tin oxide (ITO) coated glass, titanium oxide (TiO₂) and n-Si substrates by sol-gel spin coating technique. It was found that the ...