Improvement of the tribological properties of alumina coatings by zirconia addition

Mathew, Jacob Shiby (avtor), Marcinauskas, Liutauras (avtor), Kalin, Mitjan (avtor), Keželis, Romualdas (avtor), Kavaliauskas, Žydrunas (avtor), Gecevičius, Giedrius (avtor), Čapas, Vytautas (avtor)

Al$_2$O$_3$ and Al$_2$O$_3$-ZrO$_2$ coatings were deposited on stainless steel using atmospheric plasma spraying. The influence of arc current and zirconia addition on the surface morphology of the coating, phase composition and tribological properties under dry sliding conditions were investigated. The addition of zirconia reduced the surface roughness of the coatings. The X-ray diffraction measurements indicated that the Al$_2$O$_3$ coatings were composed of β-Al$_2$O$_3$, α-Al$_2$O$_3$, and γ-Al$_2$O$_3$ phases. The addition of zirconia led to the formation of tetragonal and monoclinic phases of zirconia in the as-sprayed coatings. The friction coefficients of Al$_2$O$_3$ and Al$_2$O$_3$-ZrO$_2$ coatings were similar and varied in the range of 0.72–0.75. The specific wear rates of the as-sprayed coatings were reduced with the increase of arc current. It was obtained that the wear rates of the Al$_2$O$_3$-ZrO$_2$ coatings were at least three times lower compared to Al$_2$O$_3$ coatings.

• Jezik: Angleški jezik
• Ključne besede: tribology, plasma spraying, air-hydrogen plasma, alumina-zirconia, friction coefficient
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FS - Fakulteta za strojništvo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2021
• Št. strani: 14 str.
• Številčenje: Vol. 11, iss. 8, art. 991
• PID: 20.500.12556/RUL-136173
• UDK: 539.92
• ISSN pri članku: 2079-6412
• DOI: 10.3390/coatings11080991
• COBISS.SI-ID: 73681923
• Datum objave v RUL: 14.04.2022

Gradivo je del revije

• Naslov: Coatings
• Skrajšan naslov: Coatings
• Založnik: MDPI AG
• ISSN: 2079-6412
• COBISS.SI-ID: 523035673

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
• Začetek licenciranja: 20.08.2021

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: tribologija, napraševanje s plazmo, zrak-vodikova plazma, cirkonijev dioksid, koeficient trenja