Characterization and Optimization of Slurry Erosion Behavior of SS 316 at Room Temperature

Erosion is the most prominent issue in several engineering applications such as hydropower plants, steam/jet turbines, aircraft engines and chemical processing equipment. In the present study, slurry jet erosion tests were performed on the SS-316 with variation in impingement angle (30°, 90°), veloc...

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Bibliographic Details
Published in:Transactions of the Indian Institute of Metals 2021-04, Vol.74 (4), p.839-849
Main Authors: Vyas, Akash, Menghani, Jyoti, Patel, Pringal, More, Satish, Paul, C. P., Patnaik, Amar, Ingole, S. P.
Format: Article
Language:English
Subjects:
Aircraft engines
Chemical processing equipment
Chemistry and Materials Science
Corrosion and Coatings
Design of experiments
Erosion rates
Hydroelectric plants
Hydroelectric power
Impact velocity
Impingement
Materials Science
Metallic Materials
Optimization
Original Article
Orthogonal arrays
Parameters
Room temperature
Silicon dioxide
Slurries
Surface roughness
Tribology
Turbines
Variance analysis
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Summary:Erosion is the most prominent issue in several engineering applications such as hydropower plants, steam/jet turbines, aircraft engines and chemical processing equipment. In the present study, slurry jet erosion tests were performed on the SS-316 with variation in impingement angle (30°, 90°), velocity (14.7, 30.6 m/s) and slurry concentration (0.5, 2.28%). SiO 2 particles of size below 300 microns were used as the erodent. For this objective, design of experiments (DOE) approach utilizing Taguchi’s orthogonal arrays was selected to test the specimen on a slurry jet-type erosion test rig. A precision balance having least count of 0.1 mg was used to determine the mass loss of target material during the experiment. Analysis of variance (ANOVA) was applied to the measured erosion rate and surface roughness. Among all three control parameters, the impingement angle was found to be most significant parameter followed by impact velocity and solid particle concentration for both erosion rate and surface roughness. The scanning electron microscope (SEM) was used to analyze the worn-out surfaces. The multi-response optimizer indicating the optimum input parameter settings (angle: 90°, velocity: 14.7 m/s, concentration: 0.5%) will minimize erosion rate as well as surface roughness.
ISSN:0972-2815
0975-1645
DOI:10.1007/s12666-020-02169-3