Combined‐Stage Sintering Model
作者:
James D. Hansen,
Richard P. Rusin,
Mao‐Hua Teng,
D. Lynn Johnson,
期刊:
Journal of the American Ceramic Society
(WILEY Available online 1992)
卷期:
Volume 75,
issue 5
页码: 1129-1135
ISSN:0002-7820
年代: 1992
DOI:10.1111/j.1151-2916.1992.tb05549.x
出版商: Blackwell Publishing Ltd
关键词: sintering;models;microstructure;alumina;firing
数据来源: WILEY
摘要:
By focusing on the similarities between the three stages of sintering, a single equation is derived that quantifies sintering as a continuous process from beginning to end. The microstructure is characterized by two separate parameters representing geometry and scale. The dimensionless geometry parameter, denoted T, comprises five scaling factors that relate specific microstructural featuers (e.g., surface curvature) to the scale (grain diameter). Calculations of T from experimental data show (a) agreement with computer simulations of initial‐stage sintering, (b) the effect of surface diffusion on T, and (c) changes in T with microstructural evolution during sintering. Application of the model to the design of firing schedules and the study of microstructural geometry effects on sintering is discusse
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