Tratamento de superfície em substratos de aço da indústria farmacêutica via laser de CO2
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2023-08-31
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Universidade Federal de Goiás
Resumo
AISI 304 stainless steels play a crucial role in the pharmaceutical industry due to their resistance
to chemical reactivity. However, their wear resistance is limited in high-temperature and highpressure environments. Laser treatment emerges as a promising approach to enhance their properties. In this study, a low-cost 100 W CO2 laser is used for the surface treatment of AISI 304
steels, with the addition of carbon black powder. The results showed a significant increase in
surface hardness after laser treatment compared to the untreated substrate. EDS analyses revealed the presence of carbon on the surface of the substrates. In addition to the increased surface hardness, the coefficient of friction of the laser-treated samples was reduced when compared to the reference substrate. Ultimately, carbon black acted as a photoabsorbing material
for radiation, a source of carbon for increasing surface hardness, and as a solid lubricant. These
results demonstrate the viability of using a low-cost CO2 laser as an efficient, versatile, and
rapid alternative to improve the properties of materials employed in the pharmaceutical industry.
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MARTINS, A. C. Tratamento de superfície em substratos de aço da indústria farmacêutica via laser de CO2. 2023. 53 f. Dissertação (Mestrado em Engenharia Mecânica) - Escola de Engenharia Elétrica, Mecânica e de Computação, Universidade Federal de Goiás, Goiânia, 2023.