Investigating the effect of SPRM on mechanical strength and thermal conductivity of highly porous alumina ceramics

2017 ◽  
Vol 43 (18) ◽  
pp. 16430-16435 ◽  
Author(s):  
Jianzhu Wang ◽  
Junxue Zhao
Keyword(s):  
Thermal Conductivity ◽  
Mechanical Strength ◽  
Porous Alumina ◽  
Alumina Ceramics ◽  
Highly Porous

Mechanical strength and damage tolerance of highly porous alumina ceramics produced from sintered particle stabilized foams

2016 ◽  
Vol 42 (7) ◽  
pp. 8478-8487 ◽  
Author(s):  
Carolina Tallon ◽  
Chayuda Chuanuwatanakul ◽  
David E. Dunstan ◽  
George V. Franks
Keyword(s):  
Mechanical Strength ◽  
Damage Tolerance ◽  
Porous Alumina ◽  
Alumina Ceramics ◽  
Highly Porous

Enhanced mechanical properties and decreased thermal conductivity of porous alumina ceramics by optimizing pore structure

2018 ◽  
Vol 44 (11) ◽  
pp. 13240-13246 ◽  
Author(s):  
Jingjing Liu ◽  
Bo Ren ◽  
Tianbin Zhu ◽  
Shu Yan ◽  
Xiaoyan Zhang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Conductivity ◽  
Pore Structure ◽  
Porous Alumina ◽  
Alumina Ceramics

Elastic Properties of Porous Alumina, Zirconia and Composite Ceramics

2013 ◽  
Vol 592-593 ◽  
pp. 618-621 ◽  
Author(s):  
Willi Pabst ◽  
Eva Gregorová ◽  
Tereza Uhlířová ◽  
Anna Musilová ◽  
Zuzana Andelová
Keyword(s):  
Elastic Properties ◽  
Poisson Ratio ◽  
Porous Alumina ◽  
Alumina Ceramics ◽  
Two Phase ◽  
Impulse Excitation ◽  
Satisfactory Prediction ◽  
Highly Porous ◽  
Exponential Relation ◽  
Better Than

Micromechanical calculations and elasticity standard relations are used to predict the elastic properties of porous alumina, zirconia and kaolin-based ceramics, as well as the high-temperature Young moduli of alumina-zirconia and alumina-mullite composites. The predictions are compared with experimental results obtained via impulse excitation. It is found that the Young moduli of highly porous (cellular) alumina ceramics can be predicted via the Gibson-Ashby power-law relation, whereas for partially sintered kaolin-based ceramics our exponential relation, albeit better than the Gibson-Ashby relation, does not give a satisfactory prediction. However, once the Young moduli are known, the shear and bulk moduli can be reliably predicted in both cases, based on rough information on the Poisson ratio. The temperature dependence of the Youngs moduli of two-phase composites can be quite precisely predicted as soon as the master curves of the constituent phases and the type of porosity (convex, concave, or saddle-point) are known.

Novel design of elongated mullite reinforced highly porous alumina ceramics using carbonized rice husk as pore-forming agent

2019 ◽  
Vol 45 (11) ◽  
pp. 13964-13970 ◽  
Author(s):  
Jingjing Liu ◽  
Bo Ren ◽  
Yuju Lu ◽  
Xiaoqing Xi ◽  
Yajie Li ◽  
...  
Keyword(s):  
Rice Husk ◽  
Porous Alumina ◽  
Alumina Ceramics ◽  
Novel Design ◽  
Highly Porous

Fabrication and thermal conductivity of highly porous alumina body from platelets with yeast fungi as a pore forming agent

2016 ◽  
Vol 42 (12) ◽  
pp. 13882-13887 ◽  
Author(s):  
Sawao Honda ◽  
Shinobu Hashimoto ◽  
Shizuka Yase ◽  
Yusuke Daiko ◽  
Yuji Iwamoto
Keyword(s):  
Thermal Conductivity ◽  
Porous Alumina ◽  
Yeast Fungi ◽  
Highly Porous

Effect of the addition of polyvinylpyrrolidone as a pore-former on microstructure and mechanical strength of porous alumina ceramics

2013 ◽  
Vol 39 (7) ◽  
pp. 7551-7556 ◽  
Author(s):  
Yi Feng ◽  
Kun Wang ◽  
Jianfeng Yao ◽  
Paul A. Webley ◽  
Simon Smart ◽  
...  
Keyword(s):  
Mechanical Strength ◽  
Porous Alumina ◽  
Alumina Ceramics ◽  
Pore Former

Thermal Conductivity Optimization of Porous Alumina Ceramics via Taguchi Model

2020 ◽  
Vol 1002 ◽  
pp. 125-131
Author(s):  
Mohsin A. Aswad ◽  
Amir N. Saud ◽  
Mohammed A. Ahmed
Keyword(s):  
Thermal Conductivity ◽  
Taguchi Method ◽  
Sintering Temperature ◽  
Signal To Noise Ratio ◽  
Porous Alumina ◽  
Alumina Ceramics ◽  
Optimum Conditions ◽  
Soaking Time ◽  
Thermal Insulator ◽  
Method Factor

A comparative analysis of the thermal conductivity for porous alumina using Taguchi method has been reported in the current research. Porous alumina is one of the most critical ceramics amongst those that are widely used in the thermal insulator industry; this is because of their physical properties. Thus, the investigation of these properties is highly desirable. Test variables were performed for the thermal conductivity studies-weight per cent of a pore-forming agent (yeast), sintering temperature, and soaking time. Through implementing the experimental design using the Taguchi method for thermal conductivity of porous alumina was statistically analyzed. The Signal-to-noise ratio and variance analysis investigated the influence of different parameters on the porous media's thermal conductivity. The result of research determines that the addition of the pore-forming agent obtained a higher thermal insulator. Based on the optimum conditions obtained from the Taguchi method factor was 20wt.% weight of yeast cell , sintering temperature at 1200 C , and the holding time 1.5 h. that give higher value of the S/N ratio.

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