The role of physical factors in mass transport during sintering of coal ashes and deposit deformation near the temperature of glass transformation

被引：11

作者：

Nowok, JW ^{[1
]}

Hurley, JP ^{[1
]}

Benson, SA ^{[1
]}

机构：

[1] Univ N Dakota, Energy & Environm Res Ctr, Grand Forks, ND 58202 USA

来源：

FUEL PROCESSING TECHNOLOGY | 1998年 / 56卷 / 1-2期

关键词：

coal ash; sintering; brittle <-> ductile deformation;

D O I：

10.1016/S0378-3820(97)00087-8

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The role of physical properties of melts such as viscosity, diffusion, and surface/interfacial tensions in sintering and deformation mechanisms of ash deposits above glass-transformation temperature is discussed. The differential thermal analysis (DTA) technique was applied to measure glass transformation and crystallization temperatures, Sintering of selected coal ashes was performed as a function of temperature in air. The mechanical properties of sintered ashes were measured below and above the glass-transformation temperature, T-g. It was found that sintering propensities of amorphous ashes and superplastic-like deformation of deposits above T, depend on mass transport phenomena in the intergranular liquid phase. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：89 / 101

页数：13

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