Sputter Deposited Nanocomposite Cr-Based Films and Their Characterization

Vyas, A.; Zhou, Zhifeng

doi:10.1007/978-3-030-67958-3_27

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2023

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“…High hardness comes out mainly from the presence of the harder nitride phase and not from an internal stress [31,32]. For these coatings the higher values of nanohardness are found for compositions, consisting of Cr, Cr2N and CrN phases [33]. For CrN based coatings the typical nanohardness is 18 GPa.…”

Section: Resultsmentioning

confidence: 99%

Elastic-Plastic Properties of hard Cr-Based Nitride Coatings Deposited at Temperatures Below 200°C

Chitanov,

Zlatareva,

Kolaklieva

et al. 2023

Tribol. Ind.

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Sets of Cr-based hard coatings were prepared via reactive closed field unbalanced magnetron sputtering (CFUBMS). Substrate temperature was kept in range of 150 to 200 ⁰C during deposition. Nanohardness (H) and effective modulus of elasticity (E * ) of the coatings were examined, using depth-sensing indentation method. In order to present the mechanical properties and predict the tribological behaviour of the prepared coatings ratios H/E* (elasticity index), H 3 /E *2 (resistance to plastic deformation) and 1/(HE *2 ) (resistance to crack formation) were calculated and analysed. The results from the combined examination of the research ratios showed that they could be used for classification of the expected wear-resistant properties of Cr-based hard coatings deposited at temperature below 200 ℃.

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Section: Resultsmentioning

confidence: 99%