Increasing the heat resistance of vanadium by siliciding

Journal Article · Fri Jan 01 04:00:00 EST 1988 · Sov. Mater. Sci. (Engl. Transl.); (United States)

DOI:https://doi.org/10.1007/BF00723311· OSTI ID:6184825

Lyutyi, E M; Tsvikilevich, O S; Shirokov, V V; Stepanishin, V I

The purpose of this article was to evaluate the influence of modifier metals on the protective properties of silicide coatings in heating of vanadium in air and also on the mechanical properties of type VnM-2 unalloyed vanadium and VTsU alloy. Coatings were produced by diffusion impregnation from molten sodium with silicon or silicides of the modifying elements. The silicides of titanium, zirconium, hafnium, niobium, tantalum, molybdenum, chromium, tungsten, rhenium, and nickel were investigated using x-ray spectrometric and hardness investigations and x-ray diffractometric analysis. The protective properties of the coatings were determined from the relative change in weight of the samples with and without coatings during isothermal oxidation in air at 1073/sup 0/K and also by differential thermal analysis. The influence of the coating on the mechanical properties of the material was also investigated using a borosilicide coating. High-temperature vacuum annealing was assessed as a method for restoring the plastic properties and relieving the stresses of vanadium and VTsU alloy subsequent to coating.

• Research Organization: G.V. Karpenko Physicomechanical Institute (USSR)
• OSTI ID: 6184825
• Journal Information: Sov. Mater. Sci. (Engl. Transl.); (United States), Journal Name: Sov. Mater. Sci. (Engl. Transl.); (United States) Vol. 23:4; ISSN SOMSA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
360103 -- Metals & Alloys-- Mechanical Properties
360105 -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
ANNEALING
BORON COMPOUNDS
BORON SILICIDES
CHEMICAL REACTIONS
CHROMIUM COMPOUNDS
CHROMIUM SILICIDES
COATINGS
COHERENT SCATTERING
DEPOSITION
DIFFERENTIAL THERMAL ANALYSIS
DIFFRACTION
DIFFUSION COATING
ELEMENTS
HAFNIUM COMPOUNDS
HAFNIUM SILICIDES
HARDNESS
HEAT RESISTANT MATERIALS
HEAT TREATMENTS
IMPREGNATION
MATERIALS
MECHANICAL PROPERTIES
METALLURGICAL EFFECTS
METALS
MOLYBDENUM COMPOUNDS
MOLYBDENUM SILICIDES
NICKEL COMPOUNDS
NICKEL SILICIDES
NIOBIUM COMPOUNDS
NIOBIUM SILICIDES
OXIDATION
PROTECTIVE COATINGS
REFRACTORY METAL COMPOUNDS
RELAXATION
RHENIUM COMPOUNDS
RHENIUM SILICIDES
SCATTERING
SILICIDES
SILICON COMPOUNDS
SPECTRA
STRESS RELAXATION
SURFACE COATING
TANTALUM COMPOUNDS
TANTALUM SILICIDES
TEMPERATURE EFFECTS
THERMAL ANALYSIS
THERMAL CYCLING
TITANIUM COMPOUNDS
TITANIUM SILICIDES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
TUNGSTEN COMPOUNDS
TUNGSTEN SILICIDES
VANADIUM
VANADIUM ALLOYS
VANADIUM BASE ALLOYS
X-RAY DIFFRACTION
X-RAY SPECTRA
ZIRCONIUM COMPOUNDS
ZIRCONIUM SILICIDES