Structural transformations in heat-resistant protective coatings on nickel alloys

Journal Article · Tue Sep 01 00:00:00 EDT 1987 · Met. Sci. Heat Treat. Met. (Engl. Transl.); (United States)

DOI:https://doi.org/10.1007/BF00769431· OSTI ID:5289572

Veksler, Yu G; Lesnikov, V P; Paleeva, S Ya; Lesnikova, E G; Myal'nitsa, G F

In this work a comprehensive metallophysical study was carried out for two aluminosilicide slip coatings of the systems Al-Si and Al-Nb-Si and an electron-beam Co-Cr-Al-Y coating on alloy EP-539 (17...19% Cr, 4...6% Co, 2.5...4% W, 4.5...6.5% Mo, 2...3% Ti, 3...4% Al, 1.4...2% Nb, balance Ni) after high-temperature testing. The protective properties of the coatings were evaluated from the results of laboratory tests for heat resistance at 1000/sup 0/C in the combustion products of diesel fuel with added sulfur at 970, 1000, and 1060/sup 0/C for 100 h and after full-scale tests for 150, 250, 400, and 700 h. Metallographic, hardness, x-ray, and micro x-ray studies of the coating were carried out. Layer-by-layer phase composition and the lattice spacing of the main phases were determined. X-ray analysis was carried out in an a DRON-1 diffractometer in copper K/sub ..-->../-radiation, and x-ray microanalysis was carried out in a MS-46 Cameca microanalyzer

• OSTI ID: 5289572
• Journal Information: Met. Sci. Heat Treat. Met. (Engl. Transl.); (United States), Vol. 29:3/4; Other Information: Translated from Metalloved. Term. Obrab. Met.; 29: No. 3/4, 45-50(Mar-Apr 1987)
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
GAS TURBINE ENGINES
MATERIALS TESTING
HEAT RESISTING ALLOYS
CRYSTAL-PHASE TRANSFORMATIONS
TEMPERATURE EFFECTS
NICKEL ALLOYS
PROTECTIVE COATINGS
ALUMINIUM ALLOYS
CHROMIUM ALLOYS
COBALT ALLOYS
COMBUSTION PRODUCTS
CORROSION
CORROSIVE EFFECTS
DIESEL FUELS
ENERGY BEAM DEPOSITION
HARDNESS
LATTICE PARAMETERS
MARTENSITE
MOLYBDENUM ALLOYS
MOLYBDENUM CARBIDES
NIOBIUM ALLOYS
NIOBIUM CARBIDES
SILICON ALLOYS
TUNGSTEN ALLOYS
TUNGSTEN CARBIDES
X-RAY DIFFRACTION
YTTRIUM ALLOYS
ALLOYS
CARBIDES
CARBON ADDITIONS
CARBON COMPOUNDS
CHEMICAL REACTIONS
COATINGS
COHERENT SCATTERING
DEPOSITION
DIFFRACTION
ENGINES
HEAT ENGINES
HEAT RESISTANT MATERIALS
INTERNAL COMBUSTION ENGINES
IRON ALLOYS
MATERIALS
MECHANICAL PROPERTIES
MOLYBDENUM COMPOUNDS
NIOBIUM COMPOUNDS
PETROLEUM PRODUCTS
PHASE TRANSFORMATIONS
REFRACTORY METAL COMPOUNDS
SCATTERING
SURFACE COATING
TESTING
TRANSITION ELEMENT COMPOUNDS
TUNGSTEN COMPOUNDS
360102* - Metals & Alloys- Structure & Phase Studies
360202 - Ceramics
Cermets
& Refractories- Structure & Phase Studies
360105 - Metals & Alloys- Corrosion & Erosion
360205 - Ceramics
Cermets
& Refractories- Corrosion & Erosion