PROPERTIES OF NIOBIUM-SILICON ALLOYS

Journal Article · Tue Apr 01 04:00:00 EST 1958 · Zhur. Neorg. Khim.

OSTI ID:4323880

Samsonov, G V; Neshpor, V S; Ermakova, V A

Metallographic and x-ray diffraction investigations of niobium--silicon systems with 0 to 100 at.% Si showed the existence of three intermediate complexes: the Nb/sub 4/ Si wtith hexagonal lattice with constants a = 3.59 and c == 4.46 A; the Nb/sub 5/Si/sub 2/ in three modifications alpha and BETA (a == 6.56, c = 11.86 A, and a = 10.00, c = 5.07 A, respecttively) and hexagonal gamma modification with constants a == 7.52 and c = 5.24 A; and the hexagonal silicides NbSi/sub 2/ with lattice constants a = 4.78 and c = 6.50 A. The melting points and the electrtic conductivtity of the alloys were determtined, and hypothetical phase diagrams were plotted on the basis of the data. The corrosion resistance was tested at 1000 deg C in the air; the systems did not exhibit strong corrosion restistance. (R.V.J.)

• Research Organization: Inst. of Metal Ceramics and Special Alloys; Academy of Sciences, Ukrainian SSR
• NSA Number: NSA-12-015497
• OSTI ID: 4323880
• Journal Information: Zhur. Neorg. Khim., Journal Name: Zhur. Neorg. Khim. Vol. Vol: 3
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

AIR
CORROSION
DIFFRACTION
ELECTRIC CONDUCTIVITY
HIGH TEMPERATURE
INTERMETALLIC COMPOUNDS
LATTICES
MATERIALS TESTING
MELTING POINTS
METALLOGRAPHY
MINERALOGY, METALLURGY, AND CERAMICS
NIOBIUM COMPOUNDS
PHASE DIAGRAMS
SILICIDES
STABILITY
X RADIATION