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Correlation of microstructure and flexural strength of fly ash geopolymer of varying molarities
(IOP Publishing Ltd, 2019-08)
The present work studies and compares the flexural properties of fly ash geopolymer with varying molarity of sodium hydroxide (NaOH). Different molarities of NaOH solution (6M, 8M, 10M, 12M and 14M) are used to prepare the ...
Optimization of processing parameters for graphitization of oil palm trunk waste at lower heating temperature
(IOP Publishing Ltd, 2019-07)
Previously synthetic graphite was produced at higher temperature which is around 2,500°C in complex processing method. The method bear the name of the scientist whose discover the synthetic graphite namely "Acheson Process". ...
Process of magnetizing bulk amorphous alloys Fe₄₃₊ₓCo₂₉-ₓY₈B₂₀ (x= 0 or 5)
(IOP Publishing Ltd, 2019-07)
The paper presents the results of investigations of the structure and magnetic properties of Fe₄₃₊ₓCo₂₉₋ₓY₈B₂₀ bulk amorphous alloys (x = 0 or 5). Alloy samples were made using injection a liquid alloy into a copper mold. ...
Effect of graphene oxide on microstructure and optical properties of TiO₂ thin film
(IOP Publishing Ltd, 2019-12)
GO/TiO₂ thin films have been synthesized from titanium (IV) isopropoxide (TTIP) by a sol-gel method. The films were deposited onto a glass substrate using spin coating deposition technique then were subjected to annealed ...
Synthesis and charactherization of TiO₂ doped SnO₂ thin film prepared by sol-gel method
(IOP Publishing Ltd, 2019-12)
In this work, preparation of titanium dioxide doped with tin oxide, SnO₂/TiO₂ thin films deposited onto silicon wafer via sol-gel method. Different amount of SnO₂ was added (5 ml, 10ml and 15 ml) into parent solution. The ...
132kV oil impregnated paper bushing transformer - design by CAD, analysed by FEM
(Horizon Research Publishing, 2019)
The Electric Field and Voltage Distribution (EFVD) are an important parameter for assessing high voltage bushing transformer performance. However, conducting laboratories experiment is dangerous, difficult and expensive ...
Microstructural studies of doped PEG Ag/TiO₂ thin film
(IOP Publishing Ltd, 2019-12)
Ag/TiO₂ thin film was prepared by the sol-gel method through the hydrolysis of titanium tetraisopropoxide and silver nitrate solution. Various amount of PEG was doped into the solution preparation to study the effect on ...
A review of geopolymer ceramic as a potential reinforcement material in solder alloys
(IOP Publishing Ltd, 2019-12)
Nowadays, lead-free solder has been currently used in electronic packaging technology as part of soldering material. Since SnPb was detected to produce toxicity and might harm the consumers, the usage of Pb solder has been ...
Effect of different ratio of geopolymer paste based fly ash-metakaolin on compressive strength and water absorption
(IOP Publishing Ltd, 2019-12)
This paper presents the effect of different solid to solid (S/S) ratio by mixing the fly ash and metakaolin as geopolymer paste on the compressive strength and water absorption. Fly ash is a waste materials produced by ...
Microstructure and wettability of Graphene Oxide/TiO2 thin film prepared via sol-gel method
(IOP Publishing Ltd, 2019-08)
The microstructure of graphene oxide TiO2 (GO/TiO2) films on wettability and morphology properties were studied at different amount of Titanium isopropoxide with fixed amount of GO. GO/TiO2 thin films were prepared by using ...