Thermal Stability and Wetting Properties of CrOC Coatingssynthesized by Plasma Immersion Ion Processing Academic Article

abstract

• Microcrystalline Cr-O-C films, synthesized by the plasma immersion ion processing technique, were annealed in vacuum and air at 700 C for different times so their thermal stability could be evaluated. The study showed that annealing does not greatly change the chemical composition of the CrOC films but induces a transformation ofthe film structure from the mixed phases of Cr2O3, CrO2, and CrC1.13O0.12 to the dualphases of Cr3C2, and Cr2O3. In addition, the annealed CrOC films exhibit excellentnonwetting qualities to liquid aluminum despite the presence of pin holes. The contactangle of resolidified molten aluminum against the CrOC films was found to be ashigh as 120150. The aluminum contact angle was found not to vary with thermal aging of the CrOC films. The CrOC films showed high hardness (1624 GPa) and good wear resistance as compared to the steel substrates (H13 and 304 stainless steels)used in this study.

authors

• Nastasi, Michael

published proceedings

• Journal of Materials Research

author list (cited authors)

• He, X., Hakovirta, M., Walter, K. C., Trkula, M., & Nastasi, M.

citation count

• 0

complete list of authors

• He, Xiao-Ming||Hakovirta, Marko||Walter, Kevin C||Trkula, Mitchell||Nastasi, Michael

publication date

• January 2002

publisher

• Springer Nature  Publisher

published in

• Journal of Materials Research  Journal

Digital Object Identifier (DOI)

• 10.1557/jmr.2002.0004

start page

• 14

end page

• 19

volume

• 17

issue

• 1

URL

• http://dx.doi.org/10.1557/jmr.2002.0004