Porous ceramic materials by pore-forming agent method: An intermingled fractal units analysis and procedure to predict thermal conductivity
Source abstract
Abstract
Abstract Porous ceramic materials can be produced by different techniques. One of the most important is pore agent method. The pore fraction, size, shape and distribution are linked to the pore-forming agent. In these materials porosity has a great influence in their physical properties and one of them is thermal conductivity. The role of the pore size distribution has been studied much less than pore fraction, probably because it is very difficult to describe and to characterize it. For this reason, in this paper, an original intermingled fractal model to predict thermal conductivity (taking into account entirely pore size distribution) has been proposed. This model is capable to reproduce fractal or non-fractal microstructure. Calculated data are in good agreement with experimental ones. The model could be considered as a microstructure simulator to improve thermal performance of porous ceramic materials.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Heat and Mass Transfer in Porous Media · Lattice Boltzmann Simulation Studies · Heat Transfer and Optimization
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (40)
Show source-provided references
1. Preparation of porous mullite–corundum ceramics with controlled pore size using bioactive yeast as pore-forming agent10.1016/j.matlet.2013.11.067 ↗
2. Fabrication of porous substrates: a review of processes using pore forming agents in the biomaterial field10.1002/jps.21059 ↗
3. Low cost porous mullite–corundum ceramics by gelcasting10.1023/A:1017961414108 ↗
4. Al2O3 ceramics with well-oriented and hexagonally ordered pores: the formation of microstructures and the control of properties10.1016/j.jeurceramsoc.2012.04.013 ↗
5. A novel method of coating a particle-stabilized alumina foam on a porous alumina substrate10.1016/j.matlet.2012.08.007 ↗
6. Effect of polystyrene addition on freeze casting of ceramic/camphene slurry for ultra-high porosity ceramics with aligned pore channels10.1111/j.1551-2916.2006.01311.x ↗
7. Novel freeze-casting fabrication of aligned lamellar porous alumina with a centrosymmetric structure10.1016/j.jeurceramsoc.2014.05.040 ↗
8. High-strength porous Si3N4 ceramics prepared by freeze casting and silicon powder nitridation process10.1016/j.matlet.2014.06.176 ↗
9. Ceramic tiles with controlled porosity and low thermal conductivity by using pore-forming agents10.1016/j.ceramint.2014.03.163 ↗
10. Fabrication and microstructure of porous SiC ceramics using suspension emulsions as pore-forming agents10.1016/j.ceramint.2014.03.182 ↗
11. Macroporous calcium phosphate glass–ceramic prepared by two-step pressing technique and using sucrose as a pore former10.1007/s10856-005-2611-8 ↗
12. Preparation and properties of porous alumina ceramics with oriented cylindrical pores produced by an extrusion method10.1016/j.jeurceramsoc.2004.11.015 ↗
13. Sago starch as binder and pore-forming agent for the fabrication of porcelain foam10.1016/j.ceramint.2013.09.023 ↗
14. Porous ceramics prepared using poppy seed as a pore-forming agent10.1016/j.ceramint.2006.05.019 ↗
15. Preparation and characterization of porous alumina ceramics through starch consolidation casting technique10.1016/j.ceramint.2012.02.057 ↗
16. Effect of pore parameters on thermal conductivity of sintered LHP wicks10.1016/j.ijheatmasstransfer.2012.01.028 ↗
17. Prediction of the gaseous thermal conductivity in aerogels with non-uniform pore-size distribution10.1016/j.jnoncrysol.2012.08.011 ↗
18. A generalized model for the effective thermal conductivity of unsaturated porous media based on self-similarity10.1615/JPorMedia.v10.i6.30 ↗
19. A generalized model for the effective thermal conductivity of porous media based on self-similarity10.1088/0022-3727/37/21/014 ↗
20. Predicting the initial rate of water absorption in clay bricks10.1016/j.conbuildmat.2009.01.009 ↗
21. An intermingled fractal units model to evaluate pore size distribution influence on thermal conductivity values in porous materials10.1016/j.applthermaleng.2014.01.037 ↗
22. B.B. Mandelbrot, The Fractal Geometry of Nature, W. H. Freeman and Company; 2004. (1 edition (1982) Language: English) ISBN-10: 0716711869 ISBN-13: 978-0716711865.
23. Falconer · 2003
24. Permeability from porosimetry measurements, derivation for a tortuous and fractal tubular bundle
25. Prediction of relative permeability in unsaturated porous media with a fractal approach10.1016/j.ijheatmasstransfer.2013.05.003 ↗
26. Generalized modeling of spontaneous imbibition based on Hagen–Poiseuille flow in tortuous capillaries with variably shaped apertures10.1021/la5007204 ↗
27. A fractal streaming current model for charged microscale porous media10.1016/j.elstat.2014.08.005 ↗
28. Fractal modeling of capillary pressure curves for The Geysers rocks10.1016/j.geothermics.2006.02.001 ↗
29. Fractal loop heat pipe performance testing with a compressed carbon foam wick structure10.1016/j.applthermaleng.2013.05.030 ↗
30. A fuzzy model for classifying mechanical properties of vesicular basalt used in prehistoric buildings10.1016/j.matchar.2007.05.001 ↗
31. Fractal analysis of effect of air void on freeze–thaw resistance of concrete10.1016/j.conbuildmat.2013.04.040 ↗
32. Fractal and multifractal analysis on pore structure in cement paste10.1016/j.conbuildmat.2014.07.065 ↗
33. Analysis of the effective thermal conductivity of fractal porous media10.1016/j.applthermaleng.2007.01.031 ↗
34. Lattice Boltzmann simulation of endothermal catalytic reaction in catalyst porous media10.1016/j.applthermaleng.2012.08.058 ↗
35. Study on fluid–solid coupling heat transfer in fractal porous medium by lattice Boltzmann method10.1016/j.applthermaleng.2009.12.001 ↗
36. A geometrical fractal model for the porosity and thermal conductivity of insulating concrete10.1016/j.conbuildmat.2013.03.049 ↗
37. Developing a novel form of thermal conductivity of nanofluids with Brownian motion effect by means of fractal geometry10.1016/j.powtec.2013.02.029 ↗
38. Fractal modelling of medium–high porosity SiC ceramics10.1016/j.jeurceramsoc.2008.03.039 ↗
39. Intermingled fractal units model and electrical equivalence fractal approach for prediction of thermal conductivity of porous materials10.1016/j.applthermaleng.2013.07.031 ↗
40. Case studies on the influence of microstructure voids on thermal conductivity in fractal porous media10.1016/j.csite.2013.10.001 ↗