Detail publikačního výsledku

Preparation and characterization of novel environmentally friendly Al2O3/SiO2/CaO ceramic foams

BERTOLLA, L.; CHLUP, Z.; TATARKO, P.; HANZEL, O.; ŠEVEČEK, O.; ROUPCOVÁ, P.; DLOUHÝ, I.

Originální název

Preparation and characterization of novel environmentally friendly Al2O3/SiO2/CaO ceramic foams

Anglický název

Preparation and characterization of novel environmentally friendly Al2O3/SiO2/CaO ceramic foams

Druh

Článek WoS

Originální abstrakt

Low–cost Al2O3-SiO2-CaO ceramic foams were prepared using a novel and simple reactive foaming process. The foamed green bodies were produced by mixing aluminium powder and calcium hydroxide in an aqueous solution of sodium silicate and sintered in an argon atmosphere using a pressureless electric current assisted process (T = 800 °C). An additional thermal treatment was performed in air using a conventional furnace (T = 1050 °C) in order to oxidize the residual metallic phases. The resulting foams exhibited open porosity, densities ranging from 0.50 to 0.65 g/cm3 and wide pore size distribution (0.04–400 µm). The compressive strength and thermal diffusivity of these foams ranged from 2.12 to 1.01 MPa and from 0.27 to 0.45 mm2s−1, respectively, which indicate their suitability as thermal insulator materials.

Anglický abstrakt

Low–cost Al2O3-SiO2-CaO ceramic foams were prepared using a novel and simple reactive foaming process. The foamed green bodies were produced by mixing aluminium powder and calcium hydroxide in an aqueous solution of sodium silicate and sintered in an argon atmosphere using a pressureless electric current assisted process (T = 800 °C). An additional thermal treatment was performed in air using a conventional furnace (T = 1050 °C) in order to oxidize the residual metallic phases. The resulting foams exhibited open porosity, densities ranging from 0.50 to 0.65 g/cm3 and wide pore size distribution (0.04–400 µm). The compressive strength and thermal diffusivity of these foams ranged from 2.12 to 1.01 MPa and from 0.27 to 0.45 mm2s−1, respectively, which indicate their suitability as thermal insulator materials.

Klíčová slova

Porous ceramics; Silicates; Thermal diffusivity; Compressive strength

Klíčová slova v angličtině

Porous ceramics; Silicates; Thermal diffusivity; Compressive strength

Autoři

BERTOLLA, L.; CHLUP, Z.; TATARKO, P.; HANZEL, O.; ŠEVEČEK, O.; ROUPCOVÁ, P.; DLOUHÝ, I.

Rok RIV

2019

Vydáno

15.10.2018

Nakladatel

Elsevier

Místo

Netherlands

ISSN

0272-8842

Periodikum

Ceramics International

Svazek

44

Číslo

1

Stát

Spojené království Velké Británie a Severního Irska

Strany od

19063

Strany do

19069

Strany počet

7

URL

https://www.sciencedirect.com/science/article/pii/S0272884218318376?via%3Dihub

BibTex

@article{BUT149057,
  author="Luca {Bertolla} and Zdeněk {Chlup} and Peter {Tatarko} and Ondrej {Hanzel} and Oldřich {Ševeček} and Pavla {Roupcová} and Ivo {Dlouhý}",
  title="Preparation and characterization of novel environmentally friendly Al2O3/SiO2/CaO ceramic foams",
  journal="Ceramics International",
  year="2018",
  volume="44",
  number="1",
  pages="19063--19069",
  doi="10.1016/j.ceramint.2018.07.107",
  issn="0272-8842",
  url="https://www.sciencedirect.com/science/article/pii/S0272884218318376?via%3Dihub"
}