On the significance of running-in of hard nc-TiC/a-C:H coating
for short-term repeating machining

J 2017

On the significance of running-in of hard nc-TiC/a-C:H coating for short-term repeating machining

ŽEMLIČKA, Radek, Pavel SOUČEK, Petr VOGL, Mojmír JÍLEK, Vilma BURŠÍKOVÁ et. al.

Basic information

Original name

On the significance of running-in of hard nc-TiC/a-C:H coating for short-term repeating machining

Authors

ŽEMLIČKA, Radek (203 Czech Republic, belonging to the institution), Pavel SOUČEK (203 Czech Republic, belonging to the institution), Petr VOGL (203 Czech Republic), Mojmír JÍLEK (203 Czech Republic, belonging to the institution), Vilma BURŠÍKOVÁ (203 Czech Republic, belonging to the institution), Petr VAŠINA (203 Czech Republic, guarantor, belonging to the institution) and Yutao PEI (528 Netherlands)

Edition

Surface & coatings technology, Lausanne, Elsevier Science, 2017, 0257-8972

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10305 Fluids and plasma physics

Country of publisher

Switzerland

Confidentiality degree

není předmětem státního či obchodního tajemství

Impact factor

Impact factor: 2.906

RIV identification code

RIV/00216224:14310/17:00094630

Organization unit

Faculty of Science

DOI

http://dx.doi.org/10.1016/j.surfcoat.2017.02.020

UT WoS

000399268100003

Keywords in English

Tic; tribology; run-in period; machining

Abstract

V originále

The importance of the often omitted running-in phase of tribological testing was studied on hard nc-TiC/a-C:H coating system selected as a representative of protective tribological coatings. The tribological measurements were periodically interrupted and the counterpart ball was replaced by a new one after every interrupted test to simulate machining applications, where the coatings are repeatedly in contact with a new material.The changes in the coefficient of friction and thewearrate of the counterpartball were foundtobedependent mainly on the roughness of the coating at any stage. It was found out that after substantial smoothening of the wear track of the measured coating, the coeffi cient of friction stabilized at the steady-state value attained in an uninterrupted long tribotest. This steady state value was reached at the very beginning of the test and initial instabilities in the coefficient of friction were no longer observed. It was also concluded that only after the nc-TiC/a-C:H coating gets smoothened enough within the wear track, the steady-state coefficient of friction can describe even applications where the counterpart is being periodically replaced by a new one.

Links

ED2.1.00/03.0086, research and development project

Name: Regionální VaV centrum pro nízkonákladové plazmové a nanotechnologické povrchové úpravy

GAP205/12/0407, research and development project

Name: Porozumění hybridnímu PVD-PECVD procesu s cílem řídit růst nanostrukturovaných kompozitních vrstev

Investor: Czech Science Foundation

LO1411, research and development project

Name: Rozvoj centra pro nízkonákladové plazmové a nanotechnologické povrchové úpravy (Acronym: CEPLANT plus)

Investor: Ministry of Education, Youth and Sports of the CR

Citovat

ŽEMLIČKA, Radek, Pavel SOUČEK, Petr VOGL, Mojmír JÍLEK, Vilma BURŠÍKOVÁ, Petr VAŠINA and Yutao PEI. On the significance of running-in of hard nc-TiC/a-C:H coating for short-term repeating machining. Surface & coatings technology. Lausanne: Elsevier Science, 2017, vol. 315, April, p. 17-23. ISSN 0257-8972. Available from: https://dx.doi.org/10.1016/j.surfcoat.2017.02.020.

@article{1372240,
   author = {Žemlička, Radek and Souček, Pavel and Vogl, Petr and Jílek, Mojmír and Buršíková, Vilma and Vašina, Petr and Pei, Yutao},
   article_location = {Lausanne},
   article_number = {April},
   doi = {http://dx.doi.org/10.1016/j.surfcoat.2017.02.020},
   keywords = {Tic; tribology; run-in period; machining},
   language = {eng},
   issn = {0257-8972},
   journal = {Surface & coatings technology},
   title = {On the significance of running-in of hard nc-TiC/a-C:H coating for short-term repeating machining},
   volume = {315},
   year = {2017}
}

TY  - JOUR
ID  - 1372240
AU  - Žemlička, Radek - Souček, Pavel - Vogl, Petr - Jílek, Mojmír - Buršíková, Vilma - Vašina, Petr - Pei, Yutao
PY  - 2017
TI  - On the significance of running-in of hard nc-TiC/a-C:H coating for short-term repeating machining
JF  - Surface & coatings technology
VL  - 315
IS  - April
SP  - 17-23
EP  - 17-23
PB  - Elsevier Science
SN  - 02578972
KW  - Tic
KW  - tribology
KW  - run-in period
KW  - machining
N2  - The importance of the often omitted running-in phase of tribological testing was studied on hard nc-TiC/a-C:H coating system selected as a representative of protective tribological coatings. The tribological measurements were periodically interrupted and the counterpart ball was replaced by a new one after every interrupted test to simulate machining applications, where the coatings are repeatedly in contact with a new material.The changes in the coefficient of friction and thewearrate of the counterpartball were foundtobedependent mainly on the roughness of the coating at any stage. It was found out that after substantial smoothening of the wear track of the measured coating, the coeffi cient of friction stabilized at the steady-state value attained in an uninterrupted long tribotest. This steady state value was reached at the very beginning of the test and initial instabilities in the coefficient of friction were no longer observed. It was also concluded that only after the nc-TiC/a-C:H coating gets smoothened enough within the wear track, the steady-state coefficient of friction can describe even applications where the counterpart is being periodically replaced by a new one.
ER  -

ŽEMLIČKA, Radek, Pavel SOUČEK, Petr VOGL, Mojmír JÍLEK, Vilma BURŠÍKOVÁ, Petr VAŠINA and Yutao PEI. On the significance of running-in of hard nc-TiC/a-C:H coating for short-term repeating machining. \textit{Surface \&{} coatings technology}. Lausanne: Elsevier Science, 2017, vol.~315, April, p.~17-23. ISSN~0257-8972. Available from: https://dx.doi.org/10.1016/j.surfcoat.2017.02.020.

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