Superhard Rhenium Diboride Films: Preparation and Characterization
Source abstract
Abstract
Recently, the superhardness of rhenium diboride was discovered. This study presents a first successful preparation and characterization of thin ReB 2 films. The films were deposited by the pulsed laser deposition (PLD) technique. The morphology, microstructure, and hardness of the films were investigated. The films are compact and continuous, with a preferred (002) orientation. The composite Vickers hardness of the film−substrate systems was measured, and the intrinsic hardness of the films was separated using an area law-of-mixtures approach taking into account the indentation size effect. The obtained films are found to be superhard: the intrinsic film hardness value (52 GPa) is close to that of the ReB 2 bulk.
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Research context
OpenAlex topics: Metal and Thin Film Mechanics · Diamond and Carbon-based Materials Research · Boron and Carbon Nanomaterials Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Dipartimento di Chimica, SAPIENZA Università di Roma, Piazzale Aldo Moro 5, 00185 Rome, Italy, Istituto di Struttura della Materia, CNR, via del Fosso del Cavaliere, 100, 00133 Rome, Italy, Istituto per lo Studio dei Materiali Nanostrutturati, CNR, Piazzale Aldo Moro 5, 00185 Rome, Italy, Università della Basilicata, via N. Sauro 85, 85100 Potenza, Italy, and Institute for Physical Chemistry of Ceramics, Russian Academy of Sciences, Ozernaya 48, Moscow, 119361, Russia
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