Correlating high temperature mechanical and tribological properties of CrAlN and CrAlSiN hard coatings

SURFACE & COATINGS TECHNOLOGY

卷:372

Article

Drnovsek, Aljaz¹  de Figueiredo, Marisa Rebelo¹  Vo, Hi²  Xia, Ao¹  Vachhani, Shraddha J.³  Kolozsvari, Szilard⁴  Hosemann, Peter^2,5  Franz, Robert¹ 

[1] Univ Leoben, Dept Mat Sci, Franz Josef Str 18, A-8700 Leoben, Austria

[2] Univ Calif Berkeley, Dept Nucl Engn, 4105 Etcheverry Hall,MC 1730, Berkeley, CA 94720 USA

[3] Bruker Nano Surfaces, 9625 West 76th St, Minneapolis, MN 55344 USA

[4] Plansee Composite Mat GmbH, Siebenburgerstr 23, D-86983 Lechbruck, Germany

[5] Lawrence Berkeley Natl Lab, 1 Cyclotron Rd, Berkeley, CA 94720 USA

关键词: CrAlN;    CrAlSiN;    HT nanoindentation;    HT tribology;    Magnetron sputtering;    H/E-star;    Hard coating;   

DOI  :  10.1016/j.surfcoat.2019.05.044

来源: Elsevier

【 摘 要 】

CrAlN and CrAlSiN hard coatings deposited by magnetron sputtering were analyzed for their high temperature mechanical and tribological properties. High temperature nanoindentation measurements on both coatings were performed from room temperature up to 700 degrees C in steps of 100 degrees C where a reduction in hardness H and elastic modulus E-star from their initial values was noticed. In addition, high temperature tribological tests were conducted in inert atmosphere in the same temperature range to obtain information about the coefficient of friction and the wear coefficient. In order to link the tribological behavior to the obtained mechanical properties, the H/E-star ratio was calculated and compared to the high temperature wear from the current and other studies with similar coatings. The evolution of the mechanical and tribological properties at high temperature is discussed based on the current knowledge available in literature.

【 授权许可】

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