Journal ArticleDOI
Micro-Porosity and Properties of Light-Weight Insulation Refractories Based on Calcined Flint Clay
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TLDR
In this paper, light-weight insulation materials were prepared with calcined flint clay as the main material and sawdust was infused by sols as a pore forming agent.Abstract:
In this study, light-weight insulation materials were prepared with calcined flint clay as the main material and sawdust was infused by sols as a pore forming agent. Micro-porosity and properties of the prepared insulation materials were investigated and were found to have better comprehensive properties. Apparent porosity, bulk density and cold crushing strength of the compositions containing 40 wt% calcined flint clay, fired at 1400°C for 3 h, were found to be 71%, 0.85 g.cm–3 and 2.65 MPa, respectively. Thermal conductivity of the material was 0.133 W.m–1.K –1 at 300°C. When sawdust was soaked by 0 wt% sol, microstructure of the materials showed irregular pores. When sawdust was infused with 7 wt% alumina sol, the micropores were wrapped with larger pore. Meanwhile, the original pore was refined, and cold crushing strength and thermal conductivity were also optimized. When the sawdust was soaked in alumina sol, the cold crushing strength increased to 3.3 MPa and the thermal conductivity decreas...read more
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Effect of Lanthanum Zirconate on High Temperature Resistance of Thermal Barrier Coatings
TL;DR: In this article, thermal barrier coatings (TBCs) are used to protect turbine blades of aircraft engines from oxidation and thermal conductivity degradation at elevated temperatures, and they have low thermal conductivities and high resistance to oxidation.
Journal ArticleDOI
New insight into treatment of foundry waste: porous insulating refractory based on waste foundry sand via a sacrificial fugitive route
TL;DR: In this article, the applicability of leaching hazardous waste foundry sand (WFS) in the manufacture of porous thermal insulation material is investigated, and the target metal concentrations in porous material based on WFS are within the US EPA limits, which proves the environmentally friendly application.
Journal ArticleDOI
A Novel Method of Preparing Hexagonal Ordered Porous Alumina and Analyzing the Formation Mechanism
TL;DR: In this paper, a novel method of preparing porous alumina with alumina powder and boric acid is firstly proposed and experimented, and its mechanism of the fabricating process is also investigated.
Journal ArticleDOI
Analytical approach on Indian bentonites from Rajasthan: Structural and physical characterization
TL;DR: In this article , the authors employed X-ray diffraction (XRD), Thermo Gravimetric Analysis (TGA), and Particle size analysis to characterize commercially available bentonite clay from different regions of Rajasthan.
References
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Journal ArticleDOI
Effects of pore structure on thermal conductivity and strength of alumina porous ceramics using carbon black as pore-forming agent
TL;DR: In this article, the pore structures (i.e. mean pore size, pore distribution and various pores size proportions) were characterized by means of Micro-image Analysis and Process System (MIAPS) software and mercury intrusion porosimetry.
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Thermal insulators made with rice husk ashes: Production and correlation between properties and microstructure
M.R.F. Gonçalves,C.P. Bergmann +1 more
TL;DR: Extruded and pressed thermal insulators were obtained with the utilization of rice husk ashes, which is a residue from the beneficiation process of rice with high silica content as mentioned in this paper.
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Electrochemical wastewater treatment with carbon nanotube filters coupled with in situ generated H2O2
TL;DR: In this paper, a novel wastewater treatment system was developed to combine both adsorption and oxidation in the carbon nanotube anode and additional oxidation with in situ generated hydrogen peroxide (H2O2) in the CNT cathode.
Journal ArticleDOI
Effect of particle size of fly ash on the properties of lightweight insulation materials
TL;DR: In this paper, the effects of fly ash particle size on the properties of the lightweight insulation materials were investigated by SEM (scanning electron micrograph) and tabulate thermal conductivity apparatus methods.
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Preparation and properties of porous ceramic aggregates using electrical insulators waste
TL;DR: In this article, the effects of sintering temperature and content of electrical insulators waste (EIW) on the aggregates' properties such as bulk density and apparent porosity, total porosity and cold crushing strength were investigated.