X-RAY-POWDER PROFILE ANALYSES ON NANOSTRUCTURED NIOBIUM METAL POWDERS

Authors
PRADHAN SK CHAKRABORTY T SENGUPTA SP SURYANARAYANA C FREFER A FROES FH
Citation
Sk. Pradhan et al., X-RAY-POWDER PROFILE ANALYSES ON NANOSTRUCTURED NIOBIUM METAL POWDERS, Nanostructured materials, 5(1), 1995, pp. 53-61
Citations number
23
Categorie Soggetti
Material Science
Journal title
Nanostructured materials → ACNP
ISSN journal
09659773
Volume
5
Issue
1
Year of publication
1995
Pages
53 - 61
Database
ISI
SICI code
0965-9773(1995)5:1<53:XPAONN>2.0.ZU;2-T
Abstract
Pure niobium powder was milled in a SPEX 8000 mill using hardened stee l balls for I to 6 h. The X-ray diffraction peaks were analyzed using the Fourier Line Shape and Integral Breadth analysis techniques. The c rystallite size decreased to 2.3 nm after 6 h of milling and a high de gree of isotropy was observed in both the effective crystal size and m icrostrains. This behavior is significantly different from the bulk Nb metal, which is anisotropic.