Wan Mohd Arif Wan Ibrahim, Ts.This page provides access to scholarly publications by UniMAP Faculty members and researchers.http://dspace.unimap.edu.my:80/xmlui/handle/123456789/399812024-03-28T18:29:19Z2024-03-28T18:29:19ZSelf-Fluxing Mechanism in Geopolymerization for Low-Sintering Temperature of CeramicFaizul, Che PaHasmaliza, MohamadWan Mohd Arif, W. IbrahimAmonpattaratkit, PenphitchaGondro, JoannaSochacki, WojciechNorfadhilah, Ibrahimhttp://dspace.unimap.edu.my:80/xmlui/handle/123456789/729802021-12-23T02:55:34Z2021-03-10T00:00:00ZSelf-Fluxing Mechanism in Geopolymerization for Low-Sintering Temperature of Ceramic
Faizul, Che Pa; Hasmaliza, Mohamad; Wan Mohd Arif, W. Ibrahim; Amonpattaratkit, Penphitcha; Gondro, Joanna; Sochacki, Wojciech; Norfadhilah, Ibrahim
Kaolin, theoretically known as having low reactivity during geopolymerization, was used as a source of aluminosilicate materials in this study. Due to this concern, it is challenging to directly produce kaolin geopolymers without pre-treatment. The addition of ground granulated blast furnace slag (GGBS) accelerated the geopolymerization process. Kaolin–GGBS geopolymer ceramic was prepared at a low sintering temperature due to the reaction of the chemical composition during the initial stage of geopolymerization. The objective of this work was to study the influence of the chemical composition towards sintering temperature of sintered kaolin–GGBS geopolymer. Kaolin–GGBS geopolymer was prepared with a ratio of solid to liquid 2:1 and cured at 60 °C for 14 days. The cured geopolymer was sintered at different temperatures: 800, 900, 1000, and 1100 °C. Sintering at 900 °C resulted in the highest compressive strength due to the formation of densified microstructure, while higher sintering temperature led to the formation of interconnected pores. The difference in the X-ray absorption near edge structure (XANES) spectra was related to the phases obtained from the X-ray diffraction analysis, such as akermanite and anothite. Thermal analysis indicated the stability of sintered kaolin–GGBS geopolymer when exposed to 1100 °C, proving that kaolin can be directly used without heat treatment in geopolymers. The geopolymerization process facilitates the stability of cured samples when directly sintered, as well as plays a significant role as a self-fluxing agent to reduce the sintering temperature when producing sintered kaolin–GGBS geopolymers.
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2021-03-10T00:00:00ZProduction of wollastonite from local resourcesNoorina Hidayu, JamilWan Mohd Arif, Wan IbrahimNoorhamizah, Muhd Saidhttp://dspace.unimap.edu.my:80/xmlui/handle/123456789/354392014-06-12T08:42:07Z2013-01-01T00:00:00ZProduction of wollastonite from local resources
Noorina Hidayu, Jamil; Wan Mohd Arif, Wan Ibrahim; Noorhamizah, Muhd Said
This project is focused on the production of wollastonite (CaSiO3) from local resources. Wollastonite was produced by milling silica (SiO2) and limestone (CaCO3) in planetary mill for 1 and 5 hours. Samples have been sintered at different temperatures which are 900°C, 1100°C and 1300°C for 1 hour. The raw materials that have been used was collected from surround of state of Perlis and have high purity. This has been proven by X-Ray Fluorescence (XRF) analysis. By observing under Scanning Electron Microscope (SEM), the morphology of wollastonite shows that it has high porosity and disperses homogeneously. The X-Ray Diffraction (XRD) pattern shows that the phase of β wollastonite occurred almost at high temperature which is 1100°C. Besides, the intensity of peak also shows that the wollastonite has crystalline structure. The C-O and C-C bonding is proven by Fourier Transform Infra-Red (FTIR) analysis. The particle size for 1h milling is 26.16μm while for 5h is 16.8μm.
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2013-01-01T00:00:00ZProduction of silicon carbide via grinding and heat treatment processNoorina Hidayu, JamilXian, W. HuiWan Mohd Arif, Wan IbrahimFaizul, Che PaRuhiyuddin, Mohd Zakihttp://dspace.unimap.edu.my:80/xmlui/handle/123456789/341992014-04-30T08:08:45Z2014-01-01T00:00:00ZProduction 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
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 produced by milling and mixing waste glass and graphite powder in different grinding mills; planetary mill and ring mill. The samples were then heat treated at 700 °C for 1 hour soaking time. Two types of characterization procedures were completed to determine the properties and microstructure of silicon carbide. Formation of silicon carbide was only formed through grinding by planetary mill but not ring mill. This may due to the grinding mechanism of both mills. Due to the simple and low cost of raw material to form silicon carbide, silicon carbide has high potential to be one of the commercialized products. It has the potential in reducing waste and improves the environment quality.
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2014-01-01T00:00:00ZThe effect of sintering temperature to the properties of zinc oxideLim, J. H.Yeoh, Cheow Keat, Dr.Teh, Pei Leng, Dr.Wan Mohd Arif, Wan IbrahimAbdullah, Chik, Prof. Madya Dr.http://dspace.unimap.edu.my:80/xmlui/handle/123456789/340422014-04-25T02:14:17Z2013-01-01T00:00:00ZThe 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.
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 zinc oxide (ZnO) at different sintering temperature which was 700°C, 800°C and 900°C. It was observed that the density of bulk ZnO that sintering at 900°C had the higher value of density 5.03 g/cm3. The microhardness of the bulk ZnO had a higher measurement 397.3 Hv after sintered at 900°C. ZnO that sintering at 900°C had been observed that had thermal conductivity 1.1611W/cm-K in the sintering temperature range 700°C to 900°C.
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2013-01-01T00:00:00Z