An X-ray study of residual macrostresses in protective coatings for gas-turbine blades

1997 ◽  
Vol 39 (11) ◽  
pp. 484-488
Author(s):  
Yu. D. Yagodkin ◽  
K. M. Pastukhov ◽  
E. V. Milyaeva ◽  
S. A. Muboyadzhyan ◽  
S. A. Budinovskii
Keyword(s):  
Gas Turbine ◽  
Protective Coatings ◽  
Turbine Blades ◽  
X Ray ◽  
Gas Turbine Blades ◽  
Residual Macrostresses

Heat resistance of gas turbine blades with protective coatings

1986 ◽  
Vol 18 (5) ◽  
pp. 610-615 ◽  
Author(s):  
A. P. Voloshchenko ◽  
G. N. Tret'yachenko ◽  
L. B. Getsov ◽  
B. M. Zinchenko ◽  
I. S. Malashenko ◽  
...  
Keyword(s):  
Heat Resistance ◽  
Gas Turbine ◽  
Protective Coatings ◽  
Turbine Blades ◽  
Gas Turbine Blades

scholarly journals Investigation of the Relationship between Degradation of the Coating of Gas Turbine Blades and Its Surface Color

Materials ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 7843
Author(s):  
Mariusz Bogdan ◽  
Józef Błachnio ◽  
Artur Kułaszka ◽  
Dariusz Zasada
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Protective Coatings ◽  
Turbine Blades ◽  
Operating Time ◽  
Surface Color ◽  
Metallographic Examination ◽  
Gas Turbine Blades ◽  
Study Results ◽  
The Relationship

This article presents issues concerning the relationship between the degradation of the coating of gas turbine blades and changes in the color of its surface. Conclusions were preceded by the determination of parameters characterizing changes in the technical condition of protective coatings made based on a metallographic examination that defined the morphological modifications of the microstructure of the coating, chemical composition of oxides, and roughness parameters. It has been shown that an increased operating time causes parameters that characterize the condition of the blades to deteriorate significantly. Results of material tests were compared with those of blade surface color analyses performed using a videoscope. Image data were represented in two color models, i.e., RGB and L*a*b* with significant differences being observed between parameters in both representations. The study results demonstrated a relationship between the coating degradation degree and changes in the color of the blade’s surface. Among others, this approach may be used as a tool to assess the condition of turbine blades as well as entire gas turbines.

Influence of temperature, protective coatings, and accrued service life on the fatigue resistance of gas turbine blades of cast �p539LM high-temperature strength alloy

1986 ◽  
Vol 18 (11) ◽  
pp. 1486-1491
Author(s):  
V. I. Romanov ◽  
B. A. Gryaznov ◽  
A. A. Rabinovich ◽  
O. G. Zhiritskii ◽  
I. S. Malashenko ◽  
...  
Keyword(s):  
High Temperature ◽  
Service Life ◽  
Gas Turbine ◽  
Fatigue Resistance ◽  
Protective Coatings ◽  
Turbine Blades ◽  
High Temperature Strength ◽  
Influence Of Temperature ◽  
Gas Turbine Blades ◽  
Strength Alloy

Corrosion longevity of gas turbine blades protective coatings

2010 ◽  
Vol 57 (1) ◽  
pp. 28-33 ◽  
Author(s):  
V. I. Nikitin
Keyword(s):  
Gas Turbine ◽  
Protective Coatings ◽  
Turbine Blades ◽  
Gas Turbine Blades

Industrial technology of deposition of two-layer plasma heat-protective coatings on gas turbine blades

2020 ◽  
Vol 2020 (4) ◽  
pp. 28-31
Author(s):  
V.A. Akrimov ◽  
◽  
I.M. Grechanyuk ◽  
Yu.O. Smashnyuk ◽  
V.G. Grechanyuk ◽  
...  
Keyword(s):  
Gas Turbine ◽  
Protective Coatings ◽  
Turbine Blades ◽  
Industrial Technology ◽  
Gas Turbine Blades

Thermal fatigue resistance of protective coatings for gas turbine blades

1995 ◽  
Vol 13 (3) ◽  
pp. 125-131 ◽  
Author(s):  
A. I. Rybnikov ◽  
L. B. Getsov
Keyword(s):  
Gas Turbine ◽  
Fatigue Resistance ◽  
Thermal Fatigue ◽  
Protective Coatings ◽  
Turbine Blades ◽  
Thermal Fatigue Resistance ◽  
Gas Turbine Blades

Chemical partitioning of elements in Ni-base MC-carbide reinforced eutetic superalloys

1983 ◽  
Vol 41 ◽  
pp. 250-251
Author(s):  
E. F. Koch ◽  
E. L. Hall ◽  
S. W. Yang
Keyword(s):  
Alloy Composition ◽  
Volume Fraction ◽  
Lattice Mismatch ◽  
Turbine Blades ◽  
Eutectic Alloys ◽  
Alloy Matrix ◽  
X Ray ◽  
Gas Turbine Blades ◽  
Analytical Electron ◽  
Analytical Electron Microscope

The plane-front solidified eutectic alloys consisting of aligned tantalum monocarbide fibers in a nickel alloy matrix are currently under consideration for future aircraft and gas turbine blades. The MC fibers provide exceptional strength at high temperatures. In these alloys, the Ni matrix is strengthened by the precipitation of the coherent γ' phase (ordered L12 structure, nominally Ni3Al). The mechanical strength of these materials can be sensitively affected by overall alloy composition, and these strength variations can be due to several factors, including changes in solid solution strength of the γ matrix, changes in they γ' size or morphology, changes in the γ-γ' lattice mismatch or interfacial energy, or changes in the MC morphology, volume fraction, thermal stability, and stoichiometry. In order to differentiate between these various mechanisms, it is necessary to determine the partitioning of elemental additions between the γ,γ', and MC phases. This paper describes the results of such a study using energy dispersive X-ray spectroscopy in the analytical electron microscope.

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