A novel Cr–CeO2/La2O3 nanocomposite electrodeposited in sulphate Cr(III) bath. (3rd July 2020)

• Record Type: Journal Article
• Authors: Bikulčius, G.; Češūnienė, A.; Selskienė, A.; Matijošius, T.; Pakštas, V.; Bučinskienė, D.
• Is Part Of: Transactions of the Institute of Metal Finishing. Volume 98:Number 4(2020)
• Page Start: 199
• Page End: 208
• Publication Date: 2020-07-03
• Subjects: Electrodeposition -- Cr (III) -- CeO2 / La2O3 nanoparticles -- nanocomposite -- hardness -- wear resistance -- XRD -- friction coefficient; Metals -- Finishing -- Periodicals; Metals -- Surfaces -- Periodicals; Metallurgy -- Periodicals; 671.705
• DOI: 10.1080/00202967.2020.1782033
• Languages: English
• ISSNs: 0020-2967

Abstract

ABSTRACT: For the first time, the Cr–CeO2 / La2 O3 composite has been electrochemically deposited in a sulphate Cr (III) bath with an oxalate complexing agent. XRD analysis revealed that incorporation of CeO2 /La2 O3 particles into the Cr matrix does not change its state and the Cr matrix remains fine-crystalline (crystallites size < 1 nm). The cross-section SEM and EDS analysis confirmed the incorporation of CeO2 /La2 O3 particles into the Cr matrix. The studies of the mechanical properties of the Cr–CeO2 /La2 O3 composite have shown that the hardness of the composite increases over that of the Cr deposit due to CeO2 /La2 O3 particles incorporation, while both the friction coefficient and wear rate decrease. The mechanism of CeO2 /La2 O3 nanoparticles incorporation into the Cr matrix has been discussed.