AMBIENT AND HIGH TEMPERATURE EROSION INVESTIGATION OF MATERIALS AND COATINGS USED IN TURBOMACHINERY

 
 
 
 

AMBIENT AND HIGH TEMPERATURE EROSION INVESTIGATION OF MATERIALS AND COATINGS USED IN TURBOMACHINERY

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Title: AMBIENT AND HIGH TEMPERATURE EROSION INVESTIGATION OF MATERIALS AND COATINGS USED IN TURBOMACHINERY
Author: DRENSKY, GEORGE KERILOV
Description: The design and development of high performance turbomachinery operating in an ambient environment with solid particles require a thorough knowledge of the fundamental phenomenon associated with particulate flows. Because of the serious consequences of turbomachinery erosion on their performance and life, it is important to have reliable methods for predicting their erosion when solid particles are ingested with the incoming flow. The ingestion of these solid particles over a period of time will reduce the efficiency of the propulsion system, causing increased fuel consumption and decrease in thrust. Several studies, which are essential to predicting blade surface erosion intensity and pattern, have been conducted at the University of Cincinnati's Propulsion Laboratory over the past (30ty) years. This particular work describes only some investigation done on erosion behavior of materials and coatings exposed to different types of solid particles, velocities, temperatures, and impingement angles. For the present work the following materials and coatings were evaluated: (AA-22) Ceramic Material, Tungsten Carbide Cobalt (WC-Co) coating, Chromium Carbide Nickel (Cr 3C 2Ni) coating, and Titanium Nitride (TiN) coating. The erosive wear of the samples was studied experimentally by exposing them to particle-laden flow at velocities from (100 to 1000 ft/sec). The studied temperatures were between ambient (70°) and (1400°F) and impingement angles from (15° to 90°) degrees. The erosive particles used for the ambient and high temperature testing were: Runway Sand (100 and 1000 microns), Aluminum Oxide (Al 2 0 3 -27.5 microns), Crushed Quartz (60 microns), Arizona Test Dust (20 and 100 microns), and Silica Carbide (30 microns).
Permanent Link: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1022846322
http://hdl.handle.net/2374.OX/11098
Date: 2002

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