Silicon nitride foams from emulsions

被引：14

作者：

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

Colombo, P. ^{[1
,2
]}

机构：

[1] Univ Padua, Dipartimento Ingn Ind, I-35100 Padua, Italy

[2] Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA

来源：

MATERIALS LETTERS | 2014年 / 128卷

关键词：

Porous ceramics; Silicon nitride; Emulsions; CELLULAR CERAMICS; MICROSTRUCTURE; FABRICATION; PROTEIN; MGO;

D O I：

10.1016/j.matlet.2014.04.102

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Si3N4 foams with open cells were developed by emulsification of an aqueous powder suspension containing an alkane phase (70 vol% of octane or decane), using a surfactant as emulsion stabilizer. 5 wt% of Y2O3 and 5 wt% of MgO were used as sintering additives, and the samples were pressureless sintered at 1600 degrees C in N-2. Ceramic foams, mainly based on alpha-Si3N4, with total porosity ranging from 70 to similar to 77 vol%, average cell size of similar to 31 mu m for octane and similar to 55 Inn for decane, and compression strength ranging from similar to 5 to similar to 20 MPa were produced. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：128 / 131

页数：4

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