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THE EFFECT OF PLASMA NITRIDING ON CAVITATION EROSION RESISTANCE OF GRAY CAST IRON WITH LAMELLAR GRAPHITE, EN-GJL-200

1 RIEMSCHNEIDER Eduard
Co-authors:
1 BORDEAȘU Ilare 1 MITELEA Ion 1 UȚU Ion-Dragoș 1 CRĂCIUNESCU Cornelius Marius
Institution:
1 Polytehnica University of Timisoara, Faculty of Mechanics, Timisoara, Timis, Romania, EU, eduard.riemschneider@student.upt.ro, ilare.bordeasu@upt.ro, ion.mitelea@upt.ro, dragos.utu@upt.ro, corneliu.craciunescu@upt.ro
Conference:
30th Anniversary International Conference on Metallurgy and Materials, Brno, Czech Republic, EU, May 26 - 28, 2021
Proceedings:
Proceedings 30th Anniversary International Conference on Metallurgy and Materials
Pages:
520-524
ISBN:
978-80-87294-99-4
ISSN:
2694-9296
DOI:
https://doi.org/10.37904/metal.2021.4137
Published:
15th September 2021
Proceedings of the conference have already been published in Scopus and we are waiting for evaluation and potential indexing in Web of Science.
Metrics:
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Abstract

Numerous engineering components which are in contact with liquid environments that are working under pressure can be degraded by cavitation erosion.The present paper study the improvement of cavitation erosion resistance of gray cast iron with lamellar graphite and pearlite microstructure by applying the nitriding thermochemical treatment.The cavitation tests were carried out on a vibratory device with piezoceramic crystals in accordance with ASTM G32 - 2016 standard.The material degradation is demonstrated by mass loss and erosion rate variation depending on the cavitation attack period. As reference material it was considered the same type of gray cast iron, subjected to softening annealing treatment. The eroded surface was examined by optical and scanning electronic microscopy.

Keywords: Grey cast iron, cavitation erosion, plasma nitriding

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