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Journal of Materials Engineering and Performance
Erschienen in: Journal of Materials Engineering and Performance 10/2017

13.09.2017

Scratch Testing of Hot-Pressed Monolithic Chromium Diboride (CrB2) and CrB2 + MoSi2 Composite

verfasst von: B. Bhatt, T. S. R. Ch. Murthy, K. Singh, A. Sashanka, B. Vishwanadh, J. K. Sonber, K. Sairam, G. V. S. Nageswara Rao, T. Srinivasa Rao, Vivekanand Kain

Erschienen in: Journal of Materials Engineering and Performance | Ausgabe 10/2017

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Abstract

The tribological performance of hot-pressed monolithic CrB2 and a newly developed CrB2 + 20 vol.% MoSi2 composite was investigated by using scratch test. The test was carried out under progressive loading ranging from 0.9 to 30 N over a scratch distance of 3 mm. In situ values of coefficient of friction (COF), depth of penetration and acoustic emission were recorded. The wear volume and fracture toughness were also calculated. COF of both materials is increased with increasing the scratch length and progressive load. COF of the composite was observed to be slightly higher compared to the monolithic CrB2. The wear volume of the composite is 60% higher compared to monolithic CrB2. Fracture toughness values of ~2.48 and ~2.81 MPa m1/2 were calculated for monolithic CrB2 and CrB2 + 20 vol.% MoSi2 composite, respectively. Microstructural characterization indicates that the abrasive wear is the dominant wear mechanism in both the materials.
Vorheriger Artikel Effect of KOH to Na2SiO3 Ratio on Microstructure and Hardness of Plasma Electrolytic Oxidation Coatings on AA 6061 Alloy
Nächster Artikel A Study on Infrared Local Heat Treatment for AA5083 to Improve Formability and Automotive Part Forming

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Metadaten
Titel
Scratch Testing of Hot-Pressed Monolithic Chromium Diboride (CrB2) and CrB2 + MoSi2 Composite
verfasst von
B. Bhatt
T. S. R. Ch. Murthy
K. Singh
A. Sashanka
B. Vishwanadh
J. K. Sonber
K. Sairam
G. V. S. Nageswara Rao
T. Srinivasa Rao
Vivekanand Kain
Publikationsdatum
13.09.2017
Verlag
Springer US
Erschienen in
Journal of Materials Engineering and Performance / Ausgabe 10/2017
Print ISSN: 1059-9495
Elektronische ISSN: 1544-1024
DOI
https://doi.org/10.1007/s11665-017-2922-1

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