[Kovove materialy - Metallic materials]
    Fri - April 10, 2020 - 15:25 No. of hits : 1095834 ISSN 1338-4252 (online) ISSN 0023-432X (printed)
© Institute of Materials and Machine Mechanics, Slovak Academy of Sciences, Bratislava, Slovak Republic

VOLUME 55 (2017), Issue 3

Microstructural and wear characterizations of Ultra-Dispersed Diamond (UDD) reinforced Cu-15 wt.% Ti composites fabricated via mechanical alloying and sintering
vol. 55 (2017), no. 3, pp. 149 - 159

In this study, effects of ultra-dispersed nanodiamond content on the microstructure and wear properties of Cu-15 wt.% Ti matrix composite were investigated. Samples were prepared by mechanical alloying and sintering at 890 °C for 2 h under H2 gas atmosphere. Microstructural changes and dry sliding wear characterizations of sintered samples were investigated by a field emission scanning electron microscope (FESEM), and their phase characterizations were carried out using X-ray diffractometer (XRD). Electron microscopy investigations revealed that a good bonding between nanodiamond particles and Cu matrix could not be maintained due to the formation of free copper layers and the presence of high oxygen amount at the interface. The results taken from worn surfaces showed that high content of nanodiamond (10 wt.%) with oxide particles led to low wear resistance due to poor bonding between Cu-15 wt.% Ti matrix and nanodiamond particles which were pulled out during dry sliding wear.

Key words
ultra-dispersed nanodiamond powders, microstructure, wear resistance

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Full title of this journal is bilingual: Kovové materiály - Metallic Materials.
The official abbreviation in accordance with JCR ISI is Kovove Mater.

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