Hot Corrosion Behaviour of Inconel 617 in Mixed Salt Environment at 900 and 1000 °C for Gas Turbine Applications

2014 ◽  
Vol 0 (0) ◽  
Author(s):  
M. Adam Khan ◽  
S. Sundarrajan ◽  
S. Natarajan
Keyword(s):  
Gas Turbine ◽  
Hot Corrosion ◽  
Corrosion Behaviour ◽  
Mixed Salt ◽  
Inconel 617

AbstractAn attempt is made to study the hot corrosion behaviour of Inconel 617 under mixed salt environment (Na

Hot Corrosion of Alloy 617 OCC in Simulated USC Power Plant Environment

2018 ◽  
Vol 941 ◽  
pp. 1748-1753 ◽  
Author(s):  
N. Arivazhagan ◽  
P.R. Hari ◽  
M. Nageswara Rao ◽  
A.H.V. Pavan
Keyword(s):  
Hot Corrosion ◽  
Power Plants ◽  
Corrosion Behaviour ◽  
Metal Loss ◽  
Gas Mixture ◽  
Degradation Mechanisms ◽  
Fireside Corrosion ◽  
Alloy 617 ◽  
Plant Environment ◽  
Inconel 617

Alloy 617 OCC, a variant of INCONEL 617 with optimised chemical composition, has been produced in India for manufacture of superheater and reheater tubing in boilers operating in advanced ultrasupercritical (A-USC) power plants. The tubing encounters intense hot corrosion conditions during service. The present study deals with hot corrosion behaviour of 617 OCC in A-USC environment. The environment occurring in A-USC plants was simulated in the laboratory by exposing the material coated with a mixture of salts at 700°C in a flowing gas mixture. For use in A-USC boiler technology, the metal loss due to fireside corrosion of the material should be less than 2 mm in 200,000 hours. The loss obtained in the present study was nearly 5 times this value. The corrosion processes were studied using SEM/EDAX, XRD and thermogravimetry. The degradation mechanisms coming into play, disqualifying the material for use in A-USC plants, would be discussed.

Hot corrosion behaviour of nickel–iron-based superalloy in gas turbine application

2018 ◽  
Vol 41 (8) ◽  
pp. 901-905 ◽  
Author(s):  
D. Chellaganesh ◽  
M. Adam Khan ◽  
J. T. Winowlin Jappes
Keyword(s):  
Gas Turbine ◽  
Hot Corrosion ◽  
Corrosion Behaviour ◽  
Nickel Iron ◽  
Iron Based

Environmental Degradation of Gas Turbine Materials in Steam

1997 ◽  
Author(s):  
Y. Patel ◽  
D. Tamboli ◽  
V. H. Desai ◽  
N. S. Cheruvu
Keyword(s):  
Gas Turbine ◽  
Environmental Degradation ◽  
Hot Corrosion ◽  
Gas Turbines ◽  
Corrosion Damage ◽  
Deionized Water ◽  
Compressed Air ◽  
Inconel 617 ◽  
Oxidation Damage ◽  
Oxidation And Corrosion

Steam has been proposed as an efficient cooling medium for the hot section components in the advanced gas turbines replacing compressed air for more efficient cooling allowing the turbine to operate at higher efficiency. To evaluate the effect of steam on oxidation and corrosion of hot section materials, three superalloys (X-45, Inconel-617 and IN-738LC) were exposed to steam at 840°C. Steam environments used were (a) steam generated from deionized water, (b) steam generated from deionized water with 5ppm each of NaCl and Na2SO4 and (c) steam generated from deionized water with 50 ppm each of NaCl and Na2SO4. The respective exposure times were 3900, 2950, and 1450 hours. IN-738LC showed severe internal oxidation in steam. In contaminated steam the hot corrosion damage was maximum in Inconel-617. X-45 showed less oxidation damage than IN-738LC and less hot corrosion than Inconel-617.

Hot Corrosion Behaviour of HVOF Sprayed Stellite-6 Coatings on Gas Turbine Alloys

2013 ◽  
Vol 67 (1) ◽  
pp. 87-93 ◽  
Author(s):  
N. Jegadeeswaran ◽  
M. R. Ramesh ◽  
S. Prakrathi ◽  
K. Udaya Bhat
Keyword(s):  
Gas Turbine ◽  
Hot Corrosion ◽  
Corrosion Behaviour ◽  
Stellite 6

Influence of Carbon on the Hot Corrosion Behaviour of Fe-Base Alloys

1989 ◽  
Vol 30 (9) ◽  
pp. 707-716 ◽  
Author(s):  
A. U. Malik ◽  
M. Ishaq ◽  
Sharif Ahmad ◽  
Sultan Ahmad
Keyword(s):  
Hot Corrosion ◽  
Corrosion Behaviour

scholarly journals Experience With the TF40B Engine in the LCAC Fleet

1992 ◽  
Author(s):  
Edward M. House
Keyword(s):  
Gas Turbine ◽  
Hot Corrosion ◽  
Compressor Blade ◽  
Turbine Engines ◽  
Gas Turbine Engines ◽  
Improvement Program ◽  
Air Cushion ◽  
Engine Components ◽  
Carbon Erosion ◽  
The U.S

Four Textron Lycoming TF40B marine gas turbine engines are used to power the U.S. Navy’s Landing Craft Air Cushion (LCAC) vehicle. This is the first hovercraft of this configuration to be put in service for the Navy as a landing craft. The TF40B has experienced compressor blade pitting, carbon erosion of the first turbine blade and hot corrosion of the hot section. Many of these problems were reduced by changing the maintenance and operation of the LCAC. A Component Improvement Program (CIP) is currently investigating compressor and hot section coatings better suited for operation in a harsh marine environment. This program will also improve the performance of some engine components such as the bleed manifold and bearing seals.

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