Microstructural changes of amorphous Mo–B–C coatings upon thermal annealing
Result description
Several amorphous Mo–B–C coatings with wide range of compositions were subjected to thermal annealing to a final temperature of 1000 °C in UHV conditions. The nature of the induced recrystallization depended mostly on the Mo content in the coating. A higher Mo content resulted in a nanocrystalline Mo2C phase, a lower Mo content in a nanocrystalline Mo2BC phase and Mo content in-between resulted only in a near-amorphous microstructure. In all cases, the hardness and effective elastic modulus increased significantly after annealing up to values of ∼29 GPa and 500 GPa, respectively. The cobalt diffusion from the WC-Co substrates affected the lower parts of coatings forming a MoCoB interface.
Keywords
The result's identifiers
Result code in IS VaVaI
Alternative codes found
RIV/68081723:_____/19:00510346 RIV/00216224:14310/19:00107713
Result on the web
https://www.sciencedirect.com/science/article/pii/S0257897219310436?via%3Dihub
DOI - Digital Object Identifier
Alternative languages
Result language
angličtina
Original language name
Microstructural changes of amorphous Mo–B–C coatings upon thermal annealing
Original language description
Several amorphous Mo–B–C coatings with wide range of compositions were subjected to thermal annealing to a final temperature of 1000 °C in UHV conditions. The nature of the induced recrystallization depended mostly on the Mo content in the coating. A higher Mo content resulted in a nanocrystalline Mo2C phase, a lower Mo content in a nanocrystalline Mo2BC phase and Mo content in-between resulted only in a near-amorphous microstructure. In all cases, the hardness and effective elastic modulus increased significantly after annealing up to values of ∼29 GPa and 500 GPa, respectively. The cobalt diffusion from the WC-Co substrates affected the lower parts of coatings forming a MoCoB interface.
Czech name
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Czech description
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Classification
Type
JSC - Article in a specialist periodical, which is included in the SCOPUS database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Surface and Coatings Technology
ISSN
0257-8972
e-ISSN
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Volume of the periodical
379
Issue of the periodical within the volume
DEC
Country of publishing house
CH - SWITZERLAND
Number of pages
7
Pages from-to
125052
UT code for WoS article
000498752500008
EID of the result in the Scopus database
2-s2.0-85073072737
Basic information
Result type
JSC - Article in a specialist periodical, which is included in the SCOPUS database
OECD FORD
Condensed matter physics (including formerly solid state physics, supercond.)
Year of implementation
2019