Standard No.:	GB/T 6524-2003
English Name:	Metallic powders—Determination of particle size distribution by gravitational sedimentation in a liquid and attenuation measurement
Chinese Name:	金属粉末 粒度分布的测量 重力沉降光透法
Chinese Classification:	H21    Metal physical property test method
Professional Classification:	GB    National Standard
ICS Classification:	77.040.30 77.040.30    Chemical analysis of metals 77.040.30
Issued by:	AQSIQ
Issued on:	2003-11-3
Implemented on:	2004-5-1
Status:	valid
Superseding:	GB/T 6524-1986 Determination of particle size distribution of metallic powders by method of photosedimentation
Language:	English
File Format:	PDF
Word Count:	7000 words
Price(USD):	210.0
Delivery:	via email in 1~3 business day

本标准规定了金属粉末在悬浮液中由于重力作用沉降时，通过测量光束穿过悬浮液时的衰减量来计算颗粒粒度分布的方法。本方法适用于满足斯托克斯方法的情况，即雷诺数小于0.25的层流条件，同时颗粒沉降速度不受布朗运动影响。本方法适用于全部颗粒粒径在1μm～100μm之间的金属粉末包装硬质合金用粉末。