EXAFS study of metal-coated particles produced by ball milling

Conference · Sun Nov 01 00:00:00 EST 1992

OSTI ID:10191244

Heald, S M; Jayanetti, S; Pandya, K I

EXAFS measurements have been carried out on mixtures of Sa with Ge and Si, and Pt with SiO{sub 2} which have been ball milled for extended periods. In these systems the brittle component (Ge, Si, or SiO{sub 2}) is ground to nanocrystalline dimensions while the ductile metal is found to coat the outer surface the particles. Analysis shows that in the Sn-Ge and Sn-Si systems, mixing at the interface is found to form apparently cubic SnGe and SnSi alloys respectively. In the Pt-SiO{sub 2} system while no mixing is observed, the Pt is found to be highly dispersed on the surface of SiO{sub 2} particles.

• Research Organization: Brookhaven National Lab., Upton, NY (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC02-76CH00016; AS05-80ER10742
• OSTI ID: 10191244
• Report Number(s): BNL-47545; CONF-9208160-3; ON: DE93002323
• Resource Relation: Conference: 7. international conference on x-ray absorption fine structure,Kobe (Japan),23-29 Aug 1992; Other Information: PBD: [1992]
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
PARTICLES
COATINGS
CATALYSTS
MILLING
PLATINUM
SILICON OXIDES
TIN
GERMANIUM
SILICON
FINE STRUCTURE
X-RAY SPECTROSCOPY
INTERFACES
DISPERSIONS
360101
PREPARATION AND FABRICATION