Published November 2010 | Version v1
Journal article Metadata-only

Study of the effect of plasma-striking atmosphere on Fe-oxidation in thermal dc arc-plasma processing

Creators

  • 1. Department of Physics, University of Pune, Pune 41100 (India)
  • 2. Bhabha Atomic Research Center, Mumbai 400 085 (India)
  • 3. Department of Applied Physics, Birla Institute of Technology, Mesra, Ranchi 835215, India and Department of Physics, University of Pune, Pune 41100 (India)
  • 4. National Chemical Laboratory, Pashan, Pune 411 008 (India)

Description

The effect of plasma-striking atmosphere: air and air+Ar-gas on the crystallization of Fe-oxide phases was studied using dc thermal arc-plasma processing route. The powders were characterized by x-ray diffraction, vibrating sample magnetometry, transmission electron microscopy, and Moessbauer spectroscopy techniques. At room temperature and O2 rich atmosphere, arc-evaporated Fe2+ ions oxidize into either γ-Fe2O3 or Fe3O4 depending upon the combining ratio of Fe with molecular O2. Fe/O ratio could be adjusted using proper flow rate of Ar gas to crystallize the pure γ-Fe2O3.

Additional details

Identifiers

DOI
10.1116/1.3504597;

Publishing Information

Journal Title
Journal of Vacuum Science and Technology. A, International Journal Devoted to Vacuum, Surfaces, and Films
Journal Volume
28
Journal Issue
6
Journal Page Range
p. 1399-1403
ISSN
1553-1813

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
44011157
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
Descriptors DEI
AIR; CRYSTALLIZATION; FLOW RATE; IRON IONS; IRON OXIDES; MOESSBAUER EFFECT; OXIDATION; PLASMA; POWDERS; TEMPERATURE RANGE 0273-0400 K; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION
Descriptors DEC
CHALCOGENIDES; CHARGED PARTICLES; CHEMICAL REACTIONS; COHERENT SCATTERING; DIFFRACTION; ELECTRON MICROSCOPY; FLUIDS; GASES; IONS; IRON COMPOUNDS; MICROSCOPY; OXIDES; OXYGEN COMPOUNDS; PHASE TRANSFORMATIONS; SCATTERING; TEMPERATURE RANGE; TRANSITION ELEMENT COMPOUNDS

Optional Information

Notes
(c) 2010 American Vacuum Society