An Investigation of the Hot Corrosion Protectivity Behavior of Platinum Modified Aluminide Coatings on Nickel-Based Superalloys

reportActive / Technical Report | Accession Number: ADA181795 | Open PDF

Abstract:

The adverse operating environments encountered by marine gas turbine components has necessitated the development of various protective coating systems. Diffusion aluminide coatings have been used successfully for many years to enhance the hot corrosion resistance of turbine blades and vanes. Recently, it has been found that by modifying these standard aluminide coatings with a thin platinum underlay, significant improvements in high temperature corrosion resistance can be achieved. Using a laboratory furnace specifically modified to reproduce hot corrosion attack morphologies, the effects of selected platinum- aluminide coating deposition variables were investigated on two nickel-base superalloy substrates. Keywords Turbines, Blades, Coatings, Platinum Aluminides, Chromium, Corrosion.

Author(s):
Malush, Rudolph E.
Author Organization(s):
NAVAL POSTGRADUATE SCHOOL MONTEREY CA
Descriptive Note:
Master's thesis
Pagination:
0101

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Monitor Series:
NPS
 Subject Terms
Joint Capability Areas:
JCA_7.2.1_Mitigate Lethal Effects; JCA_7.2_Mitigate; JCA_7_Protection; JCA_6.4.1_Secure Information Exchange; JCA_3.2_Engagement; JCA_3_Force Application; JCA_4.1_Deployment and Distribution; JCA_3.2.1_Kinetic Means; JCA_6_Net Centric; JCA_6.4_Information Assurance; JCA_5_Command and Control; JCA_1_Force Support; JCA_4.6_Engineering; JCA_5.3_Planning; JCA_8.2.1_Partner with Governments and Institutions; JCA_8.2_Shape; JCA_8_Building Partnerships; JCA_1.2.5_Lessons Learned; JCA_JCA_4.1.2_Sustain the Force; JCA_4_Logistics; JCA_1.2_Force Preparation
Modernization Areas:
Directed Energy
Communities of Interest:
Ground and Sea Platforms
Descriptor(s):
*CORROSION RESISTANCE, *PROTECTIVE COATINGS, *PLATINUM, *NICKEL ALLOYS, *SUPERALLOYS, *ALUMINIDES, CORROSION, LIFE EXPECTANCY(SERVICE LIFE), HIGH TEMPERATURE, ATTACK, MORPHOLOGY, THESES, SUBSTRATES, COATINGS, GAS TURBINES, TURBINE BLADES, OXIDATION, PROTECTION, NAVAL RESEARCH, THERMAL FATIGUE, TURBINES, THINNESS, CHROMIUM, TURBINE COMPONENTS, COBALT ALLOYS, BASE METAL, CREEP STRENGTH, DIFFUSION COATINGS, MARINE ENGINES
Field(s)/Group(s):
Coatings, Colorants and Finishes, Metallurgy and Metallography
Report Date:
1987 Mar 01