Ceramic shell foams produced by direct foaming and gelcasting of proteins: Permeability and microstructural characterization by X-ray microtomography

被引：27

作者：

Stochero, N. P. ^{[1
]}

de Moraes, E. G. ^{[1
]}

Moreira, A. C. ^{[1
]}

Fernandes, C. P. ^{[1
]}

Innocentini, M. D. M. ^{[2
]}

de Oliveira, A. P. Novaes ^{[1
]}

机构：

[1] Fed Univ Santa Catarina UFSC, Lab Glass Ceram Mat VITROCER, Lab Porous Media & Thermophys Properties LMPT, Grad Programme Mat Sci & Engn PGMAT, BR-88040900 Florianopolis, SC, Brazil

[2] Univ Ribeirao Preto UNAERP, Course Chem Engn, BR-14096900 Ribeirao Preto, SP, Brazil

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2020年 / 40卷 / 12期

关键词：

Ceramic shell foams; Direct foaming; Gelcasting; Permeability; X-ray microtomography; MORPHOLOGY; TOMOGRAPHY;

D O I：

10.1016/j.jeurceramsoc.2020.05.036

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this work, ceramic shell foams produced by direct foaming and gelcasting of proteins containing 35 vol.% of solids were efficiently tailored through the optimization of suspension parameters, foaming and also according to the gelling temperature. These were key parameters employed for controlling the foamability and foam stability, and hence the foam porosity and pore characteristics after the sintering process. The potential of using microtomography in characterizing the morphometric parameters of foams was explored. Airflow permeability measurements (similar to 24 degrees C to 727 degrees C) were performed in order to investigate the applicability of such materials in the fluid flow field. The samples exhibited a wide range of pore sizes (60 +/- 5-1700 +/- 90 mu m), porosity values higher than 80 %, Darcian (k(1)) and non-Darcian (k(2)) permeability coefficients values in the ranges of 1.32-1.83 x 10(-9) m(2) and 8.34-22.46 x 10(-5) m, respectively.

引用

页码：4224 / 4231

页数：8