scholarly journals Effect of sintering temperatures and foaming agent content to the physical and structural properties of wollastonite based foam glass-ceramics

2020 ◽  
Vol 52 (3) ◽  
pp. 269-281
Author(s):  
Suhail Jaafar ◽  
Mohd Zaid ◽  
Khamirul Matori ◽  
Mohd Ghazali ◽  
Mohd Shofri ◽  
...  
Keyword(s):  
Water Absorption ◽  
Structural Properties ◽  
Glass Ceramic ◽  
Powder Processing ◽  
Sintering Temperature ◽  
Linear Expansion ◽  
Foam Glass ◽  
Soda Lime ◽  
Glass Waste ◽  
Foaming Agent

This study aims to fabricate low-cost foam glass-ceramic using soda-lime-silica (SLS) glass waste and clamshells (CS) as foaming agent in content between 1 and 12 wt.% by conventional powder processing method. The samples were undergoing sintering process between 700 and 1000?C with holding time of 30 minutes and characterized according to the physical and structural properties. Samples containing 3 wt.% CS treated at 800?C show the greatest size of porosity. As the sintering temperature increased, the samples tend to become less dense. However, for the samples sintered at 900 and 1000?C, the trend of the density changes because of the excess CO2 gases generated during the heat treatment process promotes an increase in internal pressure, which results in the rupture of the pore walls. For linear expansion, for samples with a sintering temperature of 800?C and higher, the increment of the temperature will lead to the decrement of linear expansion (%). As the sintering temperature increases from 700 to 800?C, the water absorption (%) increases. However, the percentage of water absorption decreases with the further increment of sintering temperature. The XRD characterization showed the formation of wollastonite phase (CaSiO3) and further revealed the formation of greater peaks of CaSiO3 at the higher sintering temperatures. The results of compressive mechanical strength between 0.15 and 1.50 MPa indicate that the obtained glass-ceramic foams have potential for building material applications.

scholarly journals Investigation on Structural and Optical Properties of Willemite Doped Mn2+Based Glass-Ceramics Prepared by Conventional Solid-State Method

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Nur Farhana Samsudin ◽  
Khamirul Amin Matori ◽  
Josephine Ying Chi Liew ◽  
Yap Wing Fen ◽  
Mohd Hafiz Mohd Zaid ◽  
...  
Keyword(s):  
Glass Ceramic ◽  
Glass Ceramics ◽  
Structural Evolution ◽  
Emission Spectra ◽  
Soda Lime ◽  
X Ray Diffraction ◽  
Glass Waste ◽  
Solid State Method ◽  
Ceramic Samples ◽  
Zno Crystal

Mn-doped willemite (Zn2SiO4:Mn2+) glass-ceramics derived from ZnO-SLS glass system were prepared by a conventional melt-quenching technique followed by a controlled crystallization step employing the heat treatment process. Soda lime silica (SLS) glass waste, ZnO, and MnO were used as sources of silicon, zinc, and manganese, respectively. The obtained glass-ceramic samples were characterized using the X-ray diffraction (XRD), Field Emission Scanning Electron Microscopy (FESEM), Fourier Transform Infrared (FTIR), UV-Visible (UV-Vis), and photoluminescence (PL) spectroscopy. The results of XRD revealed that ZnO crystal and willemite (β-Zn2SiO4) were presented as major embedded crystalline phases. This observation was consistent with the result of FESEM which showed the presence of irregularity in shape and size of willemite crystallites. FTIR spectroscopy exhibits the structural evolution of willemite based glass-ceramics. The optical band gap shows a decreasing trend as the Mn-doping content increased. Photoluminescent technique was applied to characterize the role of Mn2+ions when entering the willemite glass-ceramic structure. By measuring the excitation and emission spectra, the main emission peak of the glass-ceramic samples located at a wavelength of 585 nm after subjecting to 260 nm excitations. The following results indicate that the obtained glass-ceramics can be applied as phosphor materials.

scholarly journals Effects of different sintering temperatures on thermal, physical, and morphological of SiO2-Na2O-CaO-P2O5 based glass-ceramic system from vitreous and ceramic wastes

2019 ◽  
Vol 51 (4) ◽  
pp. 377-387
Author(s):  
Nur Pallan ◽  
Khamirul Matori ◽  
Mansor Hashim ◽  
Raba’ah Azis ◽  
Norhazlin Zainuddin ◽  
...  
Keyword(s):  
Glass Ceramic ◽  
Sintering Temperature ◽  
Soda Lime ◽  
Sample Thickness ◽  
Morphological Properties ◽  
Ceramic System ◽  
Melt Quenching ◽  
Solid State Sintering ◽  
High Crystallization ◽  
High Crystallization Temperature

This research involved comprehensive studies on thermal, physical, and morphological properties of SiO2-Na2O-CaO-P2O5 (SNCP) glass-ceramic at various sintering temperatures. The study in SNCP glass-ceramic using soda-lime-silica (SLS) wastes glass and clam shell (CS) wastes as the main raw of materials via conventional melt-quenching technique and solid state sintering are interesting and challenging by considering the research using waste materials to fabricate novel SNCP glass-ceramic. The main peaks, Na3PO4 and Ca3Na6Si6O18 were assigned to high crystallization temperature (Tc) at 650-950?C. The density of samples increases at 550-750?C and decreases at 850-950?C due to the increase of sample thickness and higher specific volume at high sintering temperature. FESEM micrograph showed that existed porous increased at sintering temperature 850-950?C contributes effect to low densification of the sample.

scholarly journals Foam glass using sodium hydroxide as foaming agent: Study on the reaction mechanism in soda-lime glass matrix

2019 ◽  
Vol 511 ◽  
pp. 177-182 ◽  
Author(s):  
Robson Couto da Silva ◽  
Evaldo Toniolo Kubaski ◽  
Ernandes Taveira Tenório-Neto ◽  
Michele Karoline Lima-Tenório ◽  
Sergio Mazurek Tebcherani
Keyword(s):  
Reaction Mechanism ◽  
Sodium Hydroxide ◽  
Glass Matrix ◽  
Foam Glass ◽  
Soda Lime ◽  
Soda Lime Glass ◽  
Foaming Agent

The Effect of Spent Bleach Earth on the Properties of Sintered Green Glass Ceramic Composite

2016 ◽  
Vol 694 ◽  
pp. 179-183
Author(s):  
Zurina Shamsudin ◽  
Nursyahidah Salleh ◽  
Jariah Mohd Juoi ◽  
Zaleha Mustafa ◽  
M.R. Zulkifli
Keyword(s):  
Water Absorption ◽  
Glass Ceramic ◽  
Ceramic Composite ◽  
Weight Fraction ◽  
Soda Lime ◽  
X Ray Diffraction ◽  
X Ray ◽  
Dry Pressing ◽  
Green Glass ◽  
Glass Ceramic Composite

The purpose of this study is to investigate the effect of spent bleach earth (SBE) loading on the properties of green glass ceramic (GGC) composite. GGC was prepared using SBE and recycled soda lime silicate (SLS) glass. SLS glass was crushed then sieved to approximately 45µm. These GGC composites were formed with different weight fraction of SBE loading (40, 45 and 55 wt.%) by uniaxial dry pressing and sintered at different sintering temperature (700 °C, 750 °C and 850 °C). The sintering temperatures were selected based on Tg of the glass which is around 416 °C. The GGC specimens were analyzed in terms of its physical properties (density, water absorption and porosity), phase presence (X-Ray diffraction) and sintered microstructure (scanning electron microscopy). X-Ray diffraction pattern indicated that cristobalite, quartz and wallastonite phases were formed during sintering. It was found that the GGC with 45 wt.% of SBE loading sintered at 850 °C produced minimum water absorption which was 4.01% accompanied by density of 2.12 g/cm3 and a porosity of 8.49%. This shows that GGC composite produced with considerable higher amount of waste loading able to obtain acceptable physical durability.

Study on the Critical Control of Foam Insulation Materials Produced by Waste TFT-LCD Glass

2014 ◽  
Vol 668-669 ◽  
pp. 74-78 ◽  
Author(s):  
Ling Ling She ◽  
Yu Wen Guo ◽  
Jiu Li Ruan ◽  
Qi Qiao ◽  
Shi Bing Sun
Keyword(s):  
Reaction Time ◽  
Melting Temperature ◽  
Oxygen Supply ◽  
Sintering Temperature ◽  
Foam Glass ◽  
Waste Glass ◽  
Optimal Conditions ◽  
Foaming Agent ◽  
Insulation Materials

The present work studied the critical control of foam insulation materials produced by waste TFT-LCD glass. The result showed that foam glass was affected by sintering temperature, as well as other factors such as foaming agent, oxygen supply agent and reaction time. The ordinary waste glass was used to drop the melting temperature of Waste TFT-LCD glass. The density of foam glass had a down-up trend with the increase of sintering temperature. The increase of ratio of foaming agent and oxygen supply agent led to a notable decrease of the density, while the change of reaction time exerted an unobvious influence on the density. The density of foam glass produced under the optimal conditions was 0.2211 g/cm3.

scholarly journals POSSIBILITIES TO RECYCLE AUTO GLASS WASTE IN BUILDING CERAMICS

2014 ◽  
Vol 22 (1) ◽  
pp. 21-29 ◽  
Author(s):  
Jurgita Malaiškienė ◽  
Romualdas Mačiulaitis ◽  
Raminta Mikalauskaitė
Keyword(s):  
Water Absorption ◽  
Structural Properties ◽  
Glass Industry ◽  
Frost Resistance ◽  
Organic Additives ◽  
Glass Waste ◽  
Burning Temperature ◽  
Optimum Quantity ◽  
Mechanical And Structural Properties

Substantial amounts of glass waste end up in landfills because unlike ordinary glass, auto glass is unsuitable for recycling in the glass industry due to organic additives. However, it was determined that the additives make auto glass waste appropriate for the production of building ceramics, which results in improved physical-mechanical and structural properties. The optimum quantity of the additive contained in auto glass waste amounts to 15% of the formation mixture, and the most appropriate burning temperature is 1080 °C. The density of such ceramic chip is 2059 kg/m3 , the water absorption determined after 72 h is 1.2%, and the forecasted frost resistance at the beginning of decomposition is 1343 cycles, but amounts to 2188 cycles at the end of decomposition.

scholarly journals Effect of sintering temperature on physical and structural properties of Alumino-Silicate-Fluoride glass ceramics fabricated from clam shell and soda lime silicate glass

2019 ◽  
Vol 12 ◽  
pp. 1909-1914 ◽  
Author(s):  
Wan Nurshamimi Wan Jusoh ◽  
Khamirul Amin Matori ◽  
Mohd Hafiz Mohd Zaid ◽  
Norhazlin Zainuddin ◽  
Mohammad Zulhasif Ahmad Khiri ◽  
...  
Keyword(s):  
Structural Properties ◽  
Silicate Glass ◽  
Sintering Temperature ◽  
Glass Ceramics ◽  
Soda Lime ◽  
Fluoride Glass ◽  
Clam Shell ◽  
Alumino Silicate ◽  
Soda Lime Silicate Glass

scholarly journals Effect of sintering temperature on the crystal growth, microstructure and mechanical strength of foam glass-ceramic from waste materials

2020 ◽  
Vol 9 (3) ◽  
pp. 5640-5647 ◽  
Author(s):  
Dur Iffa Saparuddin ◽  
Noor Aizat Noor Hisham ◽  
Sidek Ab Aziz ◽  
Khamirul Amin Matori ◽  
Sawao Honda ◽  
...  
Keyword(s):  
Crystal Growth ◽  
Mechanical Strength ◽  
Glass Ceramic ◽  
Sintering Temperature ◽  
Foam Glass ◽  
Waste Materials

Characterisation and Properties of Sintered Glass-Ceramics Produced from Recycling Glass by Using Pressure-Less Method

2011 ◽  
Vol 471-472 ◽  
pp. 933-938 ◽  
Author(s):  
N.F. Ayoob ◽  
Jariah Mohd Juoi ◽  
Zulkifli Mohd Rosli ◽  
N.R. Rosli
Keyword(s):  
Water Absorption ◽  
Glass Ceramic ◽  
Glass Powder ◽  
Thermal Analyses ◽  
Thermal Characteristic ◽  
Batch Composition ◽  
Waste Glass ◽  
Glass Waste ◽  
Ceramic Samples ◽  
Ball Clay

The aim of this research is to develop glass ceramic produced from recycling glass. Waste glass (e.g. container and bottles) of soda lime silica (SLS) glasses is utilised as main raw materials for the formulation of glass ceramic batch composition with the addition of ball clay. The ball clay was added in order to favour shaping. The recycled glass powder are then mixed with the ball clay according to the ratio of SLSG to ball clay of 95:5 wt.%, 90:10 wt.% and 85:15 wt.%. Differential Thermal Analyses (DTA) was carried out in order to determine the thermal characteristic glass powder prior to the batch formulation. The glass was then crushed, milled and sieved to < 75µm and mixed with the ball clay before it was pressed to a pellet by pressure-less method. This pressure-less route is conducted as an approach to a simple fabrication route of the glass-ceramic samples. The green samples are then sintered at different temperature. The dense and strong glass ceramic samples were obtaining at 850oC, with holding time of one hour and morphological characterized with X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM) analyses. Results shown that glass ceramic samples produced at this optimized sintering profile had high density and microhardness value with low porosity and negligible water absorption. Overall results indicates that glass ceramic samples have good mechanical properties (e.g. microhardness exceeding 700Hv) and physical properties (e.g. water absorption, density, porosity making them attractive to the structural application. These results are also utilised as a comparison to a glass ceramic samples produced via Cold Isostatic Press (CIP) from the same batch composition formulation and sintering profiles for the purpose of optimizing the waste glass utilization.

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