Gas-dynamic model of the formation of open and closed porosity in self-propagating high-temperature synthesis

被引：0

作者：

V. I. Uvarov

I. P. Borovinskaya

E. S. Lukin

机构：

[1] Institute of the Russian Academy of Sciences “Institute of Structural Macrokinetics and Materials Science of the Russian Academy of Sciences”,

[2] D. I. Mendeleev Russian Chemical Technology University,undefined

来源：

Glass and Ceramics | 2011年 / 67卷

关键词：

open and closed porosity of materials; microstructure; temperature; combustion; method of self-propagating high-temperature synthesis (SHS).;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

A gas-dynamic model of the formation of open and closed porosity of materials under the conditions of combustion in SHS systems, when a liquid phase (which can boil under certain conditions), impurity-gas pressure, vapor-phase pressure, and external pressure or vacuum exist, is examined. It is shown that there exists a critical pressure which characterizes the boundary of the transition of closed to open porosity. Experimental studies for the system Ti – C showed that the size of the open pores of a synthesized sample, measured according to the volume of the sample, correlates with the computed values obtained in a study of the gas-dynamic model of the formation of open porosity using the theory of cavitation.

引用

页码：377 / 379

页数：2

共 9 条

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[9]

Kravchenko NYu(undefined)undefined undefined undefined undefined-undefined

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