Hot corrosion-creep interaction in IN718 under simulated marine environment: Introducing strain-associated-time (SAT) plots for comprehensive understanding

2021 ◽  
pp. 109667
Author(s):  
Venkateswara Rao Mannava ◽  
N.T.B.N. Koundinya ◽  
A. SambasivaRao ◽  
Neeta Paulose ◽  
M. Kamaraj ◽  
...  
Keyword(s):  
Marine Environment ◽  
Hot Corrosion ◽  
Comprehensive Understanding ◽  
Corrosion Creep

Hot corrosion damage mechanism of Ti6Al4V alloy in marine environment

Vacuum ◽  
2021 ◽  
pp. 110350
Author(s):  
Hulin Wu ◽  
Ping Gong ◽  
Suying Hu ◽  
Lin Xiang ◽  
Enlei Wang ◽  
...  
Keyword(s):  
Marine Environment ◽  
Hot Corrosion ◽  
Corrosion Damage ◽  
Damage Mechanism ◽  
Ti6al4v Alloy

Development of the General Electric LM 1500 Gas Turbine as a Marine Power Plant

1966 ◽  
Vol 88 (2) ◽  
pp. 144-152
Author(s):  
E. E. Stoeckly
Keyword(s):  
Power Plant ◽  
Gas Turbine ◽  
Marine Environment ◽  
Hot Corrosion ◽  
Power Plants ◽  
Sea Salt ◽  
Marine Propulsion ◽  
Performance Deterioration ◽  
Aircraft Type ◽  
And Performance

Many unique advantages have stemmed from the use of aircraft-type gas turbine power plants in selected marine propulsion applications; and, as expected, special problems have arisen because of the marine environment, primarily in the areas of parts integrity resulting from cold and hot corrosion and performance deterioration due to compressor fouling. Sulfur in the fuel, together with sea salt in the fuel and combustion air, creates major problems. Programs directed to reduce the detrimental effects, and the results attained are described.

An investigation of oxidation/hot corrosion-creep interaction at 800 °C in a Ni-base superalloy coated with salt mixture deposits of Na2SO4-NaCl-NaVO3

2019 ◽  
Vol 147 ◽  
pp. 283-298
Author(s):  
Venkateswararao Mannava ◽  
A. Sambasivarao ◽  
Neeta Paulose ◽  
M. Kamaraj ◽  
Ravi Sankar Kottada
Keyword(s):  
Hot Corrosion ◽  
Salt Mixture ◽  
Corrosion Creep ◽  
Base Superalloy

HOT CORROSION OF CERIA-YTTRIA STABILIZED ZIRCONIA PLASMA SPRAYED THERMAL BARRIER COATING BY EUTECTIC VANDIUM PENTAOXIDE-SODIUM SULFATE

2018 ◽  
Vol 18 (1) ◽  
pp. 182-192 ◽  
Author(s):  
Mohammed J Kadhim ◽  
Mohammed H Hafiz ◽  
Maryam A Ali Bash
Keyword(s):  
Thermal Barrier Coating ◽  
Hot Corrosion ◽  
Monoclinic Phase ◽  
Volume Fraction ◽  
High Volume ◽  
Thermal Barrier ◽  
Air Plasma ◽  
Plan View ◽  
Barrier Coating ◽  
Plasma Sprayed

The high temperature corrosion behavior of thermal barrier coating (TBC) systemconsisting of IN-738 LC superalloy substrate, air plasma sprayed Ni24.5Cr6Al0.4Y (wt%)bond coat and air plasma sprayed ZrO2-20 wt% ceria-3.6 wt% yttria (CYSZ) ceramic coatwere characterized. The upper surfaces of CYSZ covered with 30 mg/cm2 , mixed 45 wt%Na2SO4-55 wt% V2O5 salt were exposed at different temperatures from 800 to 1000 oC andinteraction times from 1 up to 8 h. The upper surface plan view of the coatings wereidentified for topography, roughness, chemical composition, phases and reaction productsusing scanning electron microscopy, energy dispersive spectroscopy, talysurf, and X-raydiffraction. XRD analyses of the plasma sprayed coatings after hot corrosion confirmed thephase transformation of nontransformable tetragonal (t') into monoclinic phase, presence ofYVO4 and CeVO4 products. Analysis of the hot corrosion CYSZ coating confirmed theformation of high volume fraction of YVO4, with low volume fractions of CeOV4 and CeO2.The formation of these compounds were combined with formation of monoclinic phase (m)from transformation of nontransformable tetragonal phase (t').

The Changing Patterns of North Korea’s International Film Co-Productions Since the 1980s: A Global Value Chain Approach

2020 ◽  
pp. 83-108
Author(s):  
Moon Hwy-Chang ◽  
Wenyang Yin
Keyword(s):  
Value Chain ◽  
North Korea ◽  
Film Industry ◽  
International Standards ◽  
The Political ◽  
Global Value Chain ◽  
Comprehensive Understanding ◽  
Changing Patterns ◽  
Film Productions

Although North Korea is one of the most closed countries in the world, it has long been pursuing international cooperation with other countries in order to upgrade the quality of its film industry to international standards. Preceding studies on this topic have mainly focused on the political influences behind filmmaking in general and very few studies have exclusively dealt with North Korea’s international co-productions. In this respect, in order to develop a comprehensive understanding of the internalization strategy of North Korea’s film productions, this paper uses the global value chain as a framework for analysis. This approach helps understand the internationalization pattern of each value chain activity of film co-productions in terms of the film location and the methods for collaborating with foreign partners. By dividing the evolution of North Korea’s international co-productions into three periods since the 1980s, this paper finds that although North Korea has shown mixed results with different aspects of the film value chain, it has generally improved its internationalization over the three periods. This paper further provides strategic directions for North Korea by learning some of the successful Chinese experiences in the film sector regarding collaboration with foreign partners—to foster a win-win situation for all involved parties.

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