Hot corrosion tests on corrosion resistant coatings developed for gas turbines burning biomass and waste derived fuel gases

2013 ◽  
Vol 228 ◽  
pp. 248-257 ◽  
Author(s):  
A. Bradshaw ◽  
N.J. Simms ◽  
J.R. Nicholls
Keyword(s):  
Hot Corrosion ◽  
Gas Turbines ◽  
Corrosion Resistant ◽  
Corrosion Tests ◽  
Corrosion Resistant Coatings

scholarly journals Evaluation of Coated Combustion Turbine Components From Saudi Arabia

1982 ◽  
Author(s):  
D. C. Barksdale ◽  
S. T. Scheirer ◽  
C. J. Spengler ◽  
H. J. Aeschbacher ◽  
G. N. Ziady
Keyword(s):  
Saudi Arabia ◽  
Hot Corrosion ◽  
Turbine Blades ◽  
Diffusion Coating ◽  
Air Filtration ◽  
Corrosion Resistant ◽  
Corrosion Problem ◽  
Gas Fuel ◽  
Metallurgical Study ◽  
Corrosion Resistant Coatings

Combustion turbines have been in service in Saudi Arabia for many years. Over this period, it has become apparent that the unique conditions of high sulfur gas fuel (sometimes with liquid carryover) and wind blown sand and salt particles result in a serious turbine hot corrosion problem. Metallurgical study of service blades and vanes, together with site analyses, served as background for a detailed laboratory coating evaluation. As a result, two corrosion resistant coatings fan electron beam physical vapor deposited CoCrAlY overlay and a pack diffusion Rh-Pt aluminide) were selected for application to turbine blades and vanes installed in Westinghouse W501D units for service in Saudi Arabia. State-of-the-art inlet air filtration was also installed to further reduce the possibility of hot corrosion. Comparisons were made between the two coatings after as much as 20,000 hr of service, and results were correlated with laboratory pressurized rig tests conducted under simulated conditions. In general, the performance of the CoCrAlY overlay coating was superior to that of the Rh-Pt aluminide diffusion coating.

Experience With in 939 as a Hot Corrosion Resistant Turbine Vane Material

1984 ◽  
Author(s):  
Klaus Schneider ◽  
Roland Bauer ◽  
Marc Staubli ◽  
Hermann W. Grünling
Keyword(s):  
Hot Corrosion ◽  
Gas Turbines ◽  
Protective Coatings ◽  
Base Alloy ◽  
Corrosion Resistant ◽  
Term Operation ◽  
Actual Application ◽  
M Phase ◽  
Nickel Base ◽  
And Behavior

For stationary gas turbine vanes IN 939 was evaluated very thoroughly in Europe as a promising hot corrosion resistant nickel base alloy. This paper shows examples of properties and behavior of IN 939 from literature and from actual application in stationary gas turbines. After long-term operation in stationary gas turbines vanes are analysed to show the type of oxide scale formation, the hot corrosion attack and phase stability. The alloy IN 939 exhibited excellent hot corrosion resistance under severe environmental conditions comparable to that of commercial hot corrosion protective coatings. Phases are described developed after casting and during heat treatment and sensitivity towards M-phase formation is briefly discussed. Creep and fatique data of IN 939 are compared with IN 738 LC as well as the hot corrosion behavior.

scholarly journals A Long-Term Field Test of Advanced Gas Turbine Airfoil Coatings Under a Severe Industrial Environment

1984 ◽  
Author(s):  
Kenneth G. Kubarych ◽  
Donald H. Boone ◽  
Richard L. Duncan
Keyword(s):  
Gas Turbine ◽  
Hot Corrosion ◽  
Turbine Blades ◽  
Test Program ◽  
Corrosion Resistant ◽  
Gas Turbine Blades ◽  
Marine Diesel ◽  
Corrosion Resistant Coatings ◽  
Term Field

Severe hot corrosion of gas turbine blades and vanes can result from the use of fuels contaminated with sodium and sulfur. A program has been initiated to survey currently available commercial as well as advanced developmental hot corrosion resistant coatings and select a list of coatings for application to Solar Centaur first-stage blades and vanes. A subsequent engine test program will be run on high-sulfur marine diesel fuel doped with sodium to produce severe hot corrosion conditions. The coatings will be tested in a rainbow fashion for a period up to 15,000 hours.

Functional protective coatings of nickel-based alloys

2019 ◽  
pp. 110-114
Author(s):  
D. A. Gerashchenkov ◽  
T. I. Bobkova ◽  
A. F. Vasiliev ◽  
P. A. Kuznetsov ◽  
E. A. Samodelkin ◽  
...  
Keyword(s):  
Environmental Influence ◽  
Protective Coatings ◽  
Cold Gas Dynamic Spraying ◽  
Functional Elements ◽  
Corrosion Resistant ◽  
Gas Dynamic ◽  
Precision Alloy ◽  
Wear And Corrosion ◽  
High Level ◽  
Corrosion Resistant Coatings

A composition of a precision alloy based on the Ni–Cr–Mo system for wear and corrosion-resistant coatings by supersonic cold gas dynamic spraying has been developed. The optimum coatings composition provides high level of operational properties; its application is very promising for protection of structural and functional elements of marine equipment from aggressive environmental influence.

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