GROWTH PATH ENVELOPE ANALYSIS OF OSTWALD RIPENING

被引：10

作者：

FANG, Z ^{[1
]}

PATTERSON, BR ^{[1
]}

TURNER, ME ^{[1
]}

机构：

[1] UNIV ALABAMA,DEPT BIOSTAT & BIOMATH,BIRMINGHAM,AL 35294

来源：

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 1991年 / 22卷 / 01期

关键词：

D O I：

10.1007/BF03350945

中图分类号：

T [工业技术];

学科分类号：

08 [工学];

摘要：

Optimized procedures for performing growth path envelope (GPE) analysis of processes involving growth or shrinkage of particles have been developed, and the process has been automated using computerized statistical curve fitting and numerical analysis. The Weibull function was found to represent accurately the initial cumulative size distribution data, while a nonlinear function was found best for fitting the r-t growth paths for coarsening. A strategy for efficient selection of constant N(v) > values for the analysis is described. The optimized methods have been applied to the analysis of Ostwald ripening during liquid-phase sintering of Cu-20Co alloy, and means for obtaining r* and growth velocities and testing coarsening theories are presented. Results from the automated procedure compare favorably with those from manual analysis but are obtained with considerably reduced effort.

引用

页码：19 / 23

页数：5

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