Eventos Anais de eventos
ENEBI 2022
VII Encontro Nacional de Engenharia Biomecânica
TREATMENT BY OPTICAL FIBER LASER AND TRIBOLOGICAL ANALYSIS OF THE ISO 5832-1 AUSTENITIC STAINLESS-STEEL ADOPTED IN BIOMEDICAL APPLICATIONS
Submission Author:
Ronaldo Cozza , SP
Co-Authors:
Marcelo Macedo, Ronaldo Cozza
Presenter: Ronaldo Cozza
doi://10.26678/ABCM.ENEBI2022.EEB22-0054
Abstract
The present work analyzed the influence of an optical fiber laser surface treatment process on the tribological behavior of the ISO 5832-1 austenitic stainless-steel. Specimen of this biomaterial were treated by alternating the laser frequency, in order to find out a condition that improves its tribological resistance. Ball-cratering micro-abrasive wear tests were carried out with a test ball of AISI 316L stainless-steel, used as counter-body, and an abrasive slurry prepared with abrasive particles of black silicon carbide and distilled water. The results indicated that: i) the hardness of the ISO 5832-1 austenitic stainless-steel increased as a function of the laser frequency, decreasing, consequently, the wear volume, as predicted by Archard’s Law, ii) the friction coefficient did not present a proportional behavior with the increase of the optical fiber laser frequency and iii) the best condition to improve the wear resistance of the ISO 5832-1 austenitic stainless-steel was obtained adopting an optical fiber laser frequency of 350 kHz, being reported the lower wear volume.
Keywords
biomaterials, austenitic stainless steel, Optical fiber laser, Micro-abrasive wear, Tribological resistance
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