Study of particle rebound characteristics and material erosion at high temperature

Technical Report · Wed Apr 01 04:00:00 EST 1992

DOI:https://doi.org/10.2172/10152111· OSTI ID:10152111

Tabakoff, W; Hamed, A; Metwally, A; Yeuan, J ^[1]

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1. Cincinnati Univ., OH (United States). Dept. of Aerospace Engineering and Engineering Mechanics

In this research an investigation was conducted to study the ash particle rebound characteristics and the associated erosion behavior of alloys and coatings which are widely used in gas and steam turbines. A three-component LDV system was used to measure the restitution parameters of 15 micron mean diameter coal ash particles impacting superalloys and coating at different angles. The presented results show the variation of the particle restitution ratios with the impingement angle for the coated and uncoated surfaces. The experimental results were used to develop correlations for the restitution parameters for coated and uncoated superalloys. In addition, a theoretical model based on elastic-plastic theory has been developed to simulate single solid particle impacts on solid targets.

• Research Organization: Oak Ridge National Lab., TN (United States); Cincinnati Univ., OH (United States). Dept. of Aerospace Engineering and Engineering Mechanics
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 10152111
• Report Number(s): ORNL/Sub--84-89628/04; ON: DE92015544
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
200104
36 MATERIALS SCIENCE
360105
COAL
COATINGS
COMPONENTS
CORROSION AND EROSION
DOPPLER EFFECT
EROSION
FLY ASH
GAS TURBINES
HEAT RESISTING ALLOYS
IMPINGEMENT
LASERS
MATHEMATICAL MODELS
PARTICLE SIZE
STAINLESS STEEL-410
STEAM TURBINES
TRAJECTORIES
TURBINE BLADES
VELOCIMETERS