TRIBOLOGICAL PROPERTIES OF TiBx AND WC/C COATINGS
Tribological properties of TiBx and WC/C coatings have been studied using the ball-on-disc method at room and elevated temperatures in air to investigate their behavior under conditions approaching high performance dry cutting. The average room temperature coefficients of friction (COF) of both nano...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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University of Chemistry and Technology, Prague
2011-12-01
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| Series: | Ceramics-Silikáty |
| Subjects: | |
| Online Access: | http://www.ceramics-silikaty.cz/2011/pdf/2011_04_305.pdf |
| _version_ | 1818834716280750080 |
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| author | PETER KÚŠ PETER HORŇÁK GREGORZ CEMPURA BRANISLAV GRANČIČ MARIAN MIKULA FRANTIŠEK LOFAJ DANIEL KOTTFER |
| author_facet | PETER KÚŠ PETER HORŇÁK GREGORZ CEMPURA BRANISLAV GRANČIČ MARIAN MIKULA FRANTIŠEK LOFAJ DANIEL KOTTFER |
| author_sort | PETER KÚŠ |
| collection | DOAJ |
| description | Tribological properties of TiBx and WC/C coatings have been studied using the ball-on-disc method at room and elevated temperatures in air to investigate their behavior under conditions approaching high performance dry cutting. The average room temperature coefficients of friction (COF) of both nanocomposite DC magnetron sputtered TiBx coatings and PECVD WC/C coatings were in the range 0.2-0.6. The lowest value of TiBx coatings of 0.16 was achieved in case of prefferentially oriented stuctures deposited at the highest negative bias. The lowest COF of WC/C was around 0.11. The increase of testing temperature to 450°C caused the increase of COF up to approximately 0.7-0.8. The experiments at elevated temperatures suggest the existence of the oxide transfer film with higher COF than that of the sliding contact without the film. Although both coating systems have relatively high COF values at elevated temperatures, they exhibit elements of some adaptive behavior. |
| first_indexed | 2024-12-19T02:39:14Z |
| format | Article |
| id | doaj.art-63baeb40d24b45b2b2bbec4f13386728 |
| institution | Directory Open Access Journal |
| issn | 0862-5468 1804-5847 |
| language | English |
| last_indexed | 2024-12-19T02:39:14Z |
| publishDate | 2011-12-01 |
| publisher | University of Chemistry and Technology, Prague |
| record_format | Article |
| series | Ceramics-Silikáty |
| spelling | doaj.art-63baeb40d24b45b2b2bbec4f133867282022-12-21T20:39:10ZengUniversity of Chemistry and Technology, PragueCeramics-Silikáty0862-54681804-58472011-12-01554305311TRIBOLOGICAL PROPERTIES OF TiBx AND WC/C COATINGSPETER KÚŠPETER HORŇÁKGREGORZ CEMPURABRANISLAV GRANČIČMARIAN MIKULAFRANTIŠEK LOFAJDANIEL KOTTFERTribological properties of TiBx and WC/C coatings have been studied using the ball-on-disc method at room and elevated temperatures in air to investigate their behavior under conditions approaching high performance dry cutting. The average room temperature coefficients of friction (COF) of both nanocomposite DC magnetron sputtered TiBx coatings and PECVD WC/C coatings were in the range 0.2-0.6. The lowest value of TiBx coatings of 0.16 was achieved in case of prefferentially oriented stuctures deposited at the highest negative bias. The lowest COF of WC/C was around 0.11. The increase of testing temperature to 450°C caused the increase of COF up to approximately 0.7-0.8. The experiments at elevated temperatures suggest the existence of the oxide transfer film with higher COF than that of the sliding contact without the film. Although both coating systems have relatively high COF values at elevated temperatures, they exhibit elements of some adaptive behavior.http://www.ceramics-silikaty.cz/2011/pdf/2011_04_305.pdfCoefficient of frictionThin nanocomposite coatingsTiB2WC/CTransfer film |
| spellingShingle | PETER KÚŠ PETER HORŇÁK GREGORZ CEMPURA BRANISLAV GRANČIČ MARIAN MIKULA FRANTIŠEK LOFAJ DANIEL KOTTFER TRIBOLOGICAL PROPERTIES OF TiBx AND WC/C COATINGS Ceramics-Silikáty Coefficient of friction Thin nanocomposite coatings TiB2 WC/C Transfer film |
| title | TRIBOLOGICAL PROPERTIES OF TiBx AND WC/C COATINGS |
| title_full | TRIBOLOGICAL PROPERTIES OF TiBx AND WC/C COATINGS |
| title_fullStr | TRIBOLOGICAL PROPERTIES OF TiBx AND WC/C COATINGS |
| title_full_unstemmed | TRIBOLOGICAL PROPERTIES OF TiBx AND WC/C COATINGS |
| title_short | TRIBOLOGICAL PROPERTIES OF TiBx AND WC/C COATINGS |
| title_sort | tribological properties of tibx and wc c coatings |
| topic | Coefficient of friction Thin nanocomposite coatings TiB2 WC/C Transfer film |
| url | http://www.ceramics-silikaty.cz/2011/pdf/2011_04_305.pdf |
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