ISSN:
1572-8986
Keywords:
Thermal plasmas
;
synthesis
;
transition metal nitrides
;
alloys
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Technology
Notes:
Abstract Applications of arc plasma processing to high-temperature chemistry of Group V nitrides and Si and Ge alloys are studied. The transition metal nitrides δ-VN, δ-NbN, and δ-TaN are directly synthesized in a dc argon-nitrogen plasma from powders of the metals. A large excess of N2 is required to form stoichiometric δ-VN, while the Nb and Ta can only be synthesized with a substoichiometric N content. In a dc argon plasma the alloys V3Si, VSi2, NbSi2, NbGe2, Cr3Si, and Mo3Si are obtained from powder mixtures of the corresponding elements. The compounds are identified by x-ray diffraction patterns and particle shape and size are studied by electron microscopy.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00564576
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