Showing papers by "Nijhuma Kayal published in 2019"
TL;DR: In this article, the thermal shock resistance of porous SiC ceramics was evaluated using water and air-quenching technique and it was observed that the residual strength of the quenched samples decreases with an increase in quenching temperature.
21 citations
TL;DR: Porous silicon carbide ceramics were prepared by an in situ reaction bonding process using clay and alumina as additives as mentioned in this paper. The effects of alumina additive, pore former on phase composition,...
Abstract: Porous silicon carbide ceramics were prepared by an in situ reaction bonding process using clay and alumina as additives. The effects of alumina additive, pore former on phase composition, ...
7 citations
TL;DR: In this paper, oxide bonded porous SiC ceramics were synthesized by cost effective method and the corrosion behavior of SiC ceramic filter materials in presence of steam, coal ash and both coal ash, and steam was investigated at 1000°C for 96-240h.
Abstract: Ceramic filters specially SiC filters are used in advanced coal combustion and gasification processes to remove fine dust particles from the fuel gas at high temperatures and high pressure for protection of turbine blades and other downstream components from corrosion and erosion and to meet the environmental regulations. Processing of corrosion resistant porous SiC ceramics at low temperature using a simple technique is still challenging. In this study oxide bonded porous SiC ceramics were synthesized by cost effective method. The corrosion behaviour of SiC ceramic filter materials in presence of steam, coal ash and both coal ash and steam was investigated at 1000 °C for 96–240 h. The apparent changes in mass, porosity and density with corrosion duration and environment were recorded. Finally SEM, XRD and mechanical tests of the corroded samples were carried out. The corrosion test results indicated water vapour is the perpetrator for strength degradation.
4 citations