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Effects of pore structure on thermal conductivity and strength of alumina porous ceramics using carbon black as pore-forming agent
- Source :
- Ceramics International. 42:8221-8228
- Publication Year :
- 2016
- Publisher :
- Elsevier BV, 2016.
-
Abstract
- In the present work, carbon black (CB) works as a pore-forming agent in the preparation of alumina porous ceramics. The pore structures (i.e. mean pore size, pore size distribution and various pores size proportions) were characterized by means of Micro-image Analysis and Process System (MIAPS) software and mercury intrusion porosimetry. Then their correlation and thermal conductivity as well as strength were determined using grey relation theory. The results showed that the porosity and mean pore size increased against the amount of CB, whereas the thermal conductivity, cold crushing strength and cold modulus of rupture reduced. The 14 μm pores had the opposite effects.
- Subjects :
- 010302 applied physics
Pore size
Work (thermodynamics)
Materials science
Process Chemistry and Technology
02 engineering and technology
Carbon black
021001 nanoscience & nanotechnology
01 natural sciences
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Porous ceramics
Thermal conductivity
Flexural strength
0103 physical sciences
Materials Chemistry
Ceramics and Composites
Composite material
0210 nano-technology
Porosity
Theory of relations
Subjects
Details
- ISSN :
- 02728842
- Volume :
- 42
- Database :
- OpenAIRE
- Journal :
- Ceramics International
- Accession number :
- edsair.doi...........9ecc49079af305a243f9711e1d95fa23