POROUS CERAMIC STRUCTURES OBTAINED FROM CALCIUM CARBONATE AS PORE GENERATING AGENT

被引：4

作者：

Simao, Lisandro ^{[1
]}

Klegues Montedo, Oscar Rubem ^{[1
]}

Caldato, Rafael Falchi ^{[2
]}

de Mello Innocentini, Murilo Daniel ^{[2
]}

da Silva Paula, Marcos Marques ^{[1
]}

Angioletto, Elidio ^{[1
]}

Dal-Bo, Alexandre Goncalves ^{[1
]}

da Silva, Luciano ^{[1
]}

机构：

[1] Univ Extermo Catarinense UNESC, Inst Engn & Tecnol IDT, Av Univ 1105, BR-88806000 Criciuma, SC, Brazil

[2] Univ Ribeirao Preto UNAERP, Curso Engn Quim, BR-14096900 Ribeirao Preto, Brazil

来源：

20TH BRAZILIAN CONFERENCE ON MATERIALS SCIENCE AND ENGINEERING | 2014年 / 775-776卷

关键词：

Porous media; Ceramics; Porosity; Calcium Carbonate; FOAMS;

D O I：

10.4028/www.scientific.net/MSF.775-776.755

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The aim of this work is to present experimental results related to the use of calcium carbonate as pore generating agent. Four compositions containing 20 wt.% of limestone were used and characterized chemically and thermally. Each composition was homogenized in a porcelain ball mill, dried in a laboratory drier, humidified at 7 wt.%, and pressed in an uniaxial hydraulic press. Compacted samples were dried and heat treated with a suitable heating rate for the degasification of calcium carbonate and sintered at 800, 900, and 1050 degrees C. Sintered samples were characterized to determine the porosity, crystalline phases formed and microstructural features. The results showed that the porosity has increased with the sintering temperature of the compositions increasing due porosity generated by the calcium carbonate degasification and the material expansion.

引用

页码：755 / +

页数：3

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