Study of particle rebound characteristics and material erosion at high temperature
The rebound characteristics of 15 micron mean diameter fly ash particles impacting several target materials were measured using Laser Doppler Velocimetry (LDV). Detailed results including the effects of various parameters were given in a previous report. This report focuses on the effects of new additional parameters on the rebound characteristics. First, the restitution parameters are reported at small impact angles (less than 15 degrees) for 410 stainless steel, 2024 aluminum, 6Al-4V titanium, INCO 718, RENE 41, AM 355, L605 cobalt and alumina (Al/sub 2/O/sub 3/). The fly ash rebound data for these target materials are then investigated in an effort to develop generalized correlations for the restitution coefficients. The effect of the target surface geometry on the rebound characteristics is investigated for 2024 aluminum as the next step. Finally, three-dimensional (3-D) rebound characteristics are presented for fly ash particles impacting INCO 718 and 2024 aluminum target materials. Semiempirical erosion rate equations are reported for 2024 aluminum, INCO 718, RENE 41 and AM355 alloys from the experimental erosion results for fly ash and silica sand particles at various particle velocities and material temperatures. 18 refs., 86 figs.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Cincinnati Univ., OH (USA). Dept. of Aerospace Engineering and Engineering Mechanics
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 6230453
- Report Number(s):
- ORNL/Sub-84-89628/02; ON: DE89007926
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Study of particle rebound characteristics and material erosion at high temperature
Study of particle rebound characteristics and material erosion at high temperature
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