纳米钨粉和超细钨粉的粒度分布表征.pdf.pdf

第 17 卷第 6 期粉末冶金工业 Vol. 17 No . 6

2007 年 12 月 POWDER METALL URGY INDUSTRY Dec. 2007
纳米钨粉和超细钨粉的粒度分布表征
朱丽慧1 ,邵光杰1 ,刘一雄2 ,Dave Siddle2
(11 上海大学材料科学与工程学院,上海 200072 ;21 肯纳金属有限公司,宾西法尼亚州拉特布市 15650 - 0231)
摘要:采用 X 射线小角散射法测试了纳米钨粉和超细钨粉的粒度分布。结果表明,采用 X
射线小角散射法测试出的纳米钨粉和超细钨粉的粒度分布与透射电镜观察和比表面法测试结
果吻合,能较为准确地表征纳米钨粉和超细钨粉的一次颗粒的粒度分布。但为了得到可信的
结果,X 射线衍射仪的最小可测试角必须根据实际情况进行选择。
关键词:纳米;钨粉;粒度分布;X 射线小角散射
中图分类号: TG1151 22 ; TG14614 文献标识码:A
文章编号:1006 - 6543(2007) 06 - 0005 - 04
C HA RAC TER IZA T ION OF PA R TICL E SIZE DIS TR IBU TION O F NANO2TU N GSTEN
POWDER S AND UL TRA2FINE TUN GS TEN POWDER S
ZHUL i2hui1 ,SHAO Guang2jie1 ,LI U Yi2xiong2 ,Dave Siddle2
(11 School of Materials Science & Engineering ,Shanghai Unive rsity ,Sha nghai 200072 ,China ;
21 Kennametal Inc1 ,Latrobe , PA ,1565020231 ,U SA)
Abstract :Small2a ngle X2ray scatte ring (SAXS) was used to characte rize the particle size distri2
bution of nano2tungste n powder s and ultra2fine tungsten powder s1By the co mparison with
TEM observation and B ET met hod ,SAXS was prove d to be a reliable method to cha racterize
the primary particle size distribution of bot h na no2tungsten powder s and ultra2fine tungste n
powders1 However ,suitable minimum measuring angle of x2ray diff ration should be deter2
mined to obtain relia ble size distribution of nano2tungsten and ultra2fine tungsten powders1
Key word