摘要
用Ｑ９００自动图象分析系统测定了用（ＮＨ４）２ＷＳ４热分解制备的ＷＳ２颗粒的分形结构，得到ＷＳ２周边分维数Ｄｆ在１．０１５～１．０３２范围，表面分维数Ｄｓ在２．０１５～２．０３２范围，其分维数随着粒度减小而增大。给出了Ｄｆ、Ｄｓ与颗粒等效直径ｄ的关系，Ｄｆ。
The fractal dimension of WS 2 particles produced from (NH 4) 2WS 4 by means of thermal decomposition was measured with the Q900 automatic image analysis system. Experimental data showed that fractal dimension D f of the outline ranged from 1.015～1.032, fractal dimension D s of the surface ranged from 2.015～2.032, and fractal dimension increased with the decrease of particle size. The relation between D f, D s and WS 2 particle equivalent diameter d was given. D f, D s signified the characteristic of the morphology and size of WS 2 particles.
出处
《中国有色金属学报》
EI
CAS
CSCD
1996年第2期36-37,41,共3页
The Chinese Journal of Nonferrous Metals
关键词
粒度
形态
分维数
图象分析
二硫化钨
WS 2 particle size particle shape fractal dimension
