Correlation between three-body wear and tribological characteristics of titanium nitride, titanium carbonitride and titanium carbide coatings

Guu, Yeong Yan; Lin, Jen Fin; Ai, Chi-Fong

doi:10.1016/s0043-1648(96)07401-7

Cited by 13 publications

(6 citation statements)

References 7 publications

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“…It is worth noting that when Ti increases the ER decreases slightly (Table 1), reaching values as low as 82%. In fact, carbon-based films can have high ER values, as those previously reported by Chowdhury and colleagues 33 . For tough films, Voevodin and co-workers 6,7 have reported that a good value for ER would be 60%.…”

Section: Resultssupporting

confidence: 80%

“…In general, the COF values varied in the range of 0.10 -0.18 and 0.22 -0.50 for coatings produced with Ar/CH 4 flows of 190/30 and 170/50 sccm, respectively. This variation could be associated to the hard debris interposed between the sliding surfaces 33 . Despite of having higher concentration of carbon in relation to titanium (see Figure 2), films deposited with CH 4 flow of 50 sccm showed higher COF values, which probably generated larger amount of wear debris.…”

Section: Resultsmentioning

confidence: 99%

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Mechanical and tribological properties of Ti-containing carbon nanocomposite coatings deposited on TiAlV alloys

et al. 2010

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Ti-doped carbon coatings were deposited on TiAlV alloys by reactive dc-magnetron sputtering in Ar/CH 4 mixed gas. When Ar flow increases the incorporation of Ti into films raises while the concentration of C decreases. The formed nanometric TiC crystals were more noticeable for coatings deposited with higher Ar flows. Hardness (H) and elastic modulus (E) of coatings were measured by nanoindentation. H values were in the range of 8.8-15.9 GPa and E of 53.4-113.7 GPa. Higher values for H and E were obtained for films containing larger amount of TiC-phase. The presence of TiC crystals increased the coefficient of friction (COF) from 0.07 to 0.28 in scratch tests. Tribological experiments were carried out by using a pin-on-disk apparatus in air and in liquid. COF values ranged from 0.10 to 0.50 for tests in air. Despite of presenting higher COF, tests performed in liquid resulted in less pronounced wear tracks.

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Section: Resultssupporting

confidence: 80%

Section: Resultsmentioning

confidence: 99%

Mechanical and tribological properties of Ti-containing carbon nanocomposite coatings deposited on TiAlV alloys

et al. 2010

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“…Regarding the tribological characterization, it is worth to mention that TiC has been studied by many authors [29][30][31] and in this moment the main emphasis is given to the preparation of nc-TiC/a-C nanocomposite coatings [32]. On the other hand, it is known that Ti-O coatings have the possibility to form magnelis-phase (TiO 2 − x ), which is known to have very low friction coefficients.…”

Section: Resultsmentioning

confidence: 99%

The influence of structure changes in the properties of TiCxOy decorative thin films

et al. 2007

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The main purpose of this work consists in the preparation of titanium oxycarbide, TiC x O y , thin films, in which the presence of oxygen changed the film properties between those of titanium carbide and those of titanium oxide. Varying the oxide/carbide ratio allowed to tune the structure of the films between titanium oxide and carbide and consequently electronic, mechanical and optical properties of the films. The depositions were carried out from a TiC target by direct current, dc, reactive magnetron sputtering, varying the oxygen flow rate. The obtained results showed that the film's properties can be divided into 3 different regimes -i) carbide, ii) a transition zone and iii) an oxide one. X-ray diffraction results revealed the occurrence of a face-centered cubic phase (TiC-type) for low oxygen content, also obtained in the TiC 1.6 (O) film, with a clear tendency towards amorphization with the increase of the oxygen flow rate. For the highest oxygen contents, the results revealed the development of a mixture of poorly crystallized TiO 2 phases. The colour results indicated a strong dependence on the O/Ti ratio. A progressive reduction of hardness and residual stresses with the increase of the O/Ti ratio was also observed. The residual stresses, as well as the film structure, seem to play an important role on the adhesion of the coatings. The static friction coefficient revealed also some correlation with the mechanical properties, but mainly with the surface roughness.

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“…This occurs when the three-body wear mechanism dominates the wear process. [29] The wear track morphologies obtained after tribotests are depicted by the optical micrographs, shown in Fig. 6.…”

Section: Resultsmentioning

confidence: 99%

Effect of adhesive and cohesive strength on the tribological behaviour of non‐reactively sputtered TiC thin films

Kataria

Dash

Tyagi

2009

Surface & Interface Analysis

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Titanium carbide (TiC) thin films were deposited on D9 steel substrates at room temperature (RT), 200• C and 400 • C. A compound TiC target was sputtered to deposit films in a non-reactive argon atmosphere. As-deposited films were characterised for structural, chemical and mechanical properties. Nanoindentation and scratch tests were performed to evaluate the cohesive and adhesive strength of the films, respectively. Tribological properties of the films were investigated using a tribometer. An increase in nano-hardness from 7.2 to 10.5 GPa was observed as deposition temperature was increased. The films deposited at RT and 200• C showed poor adhesion leading to the inferior tribological performance. In contrast, films deposited at 400 • C showed better adhesion which improved the wear resistance. Tribological behaviour of TiC thin films was correlated with contact deformation modes of coatings. These modes revealed significant role of adhesive and cohesive strength associated with the coatings.

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Correlation between three-body wear and tribological characteristics of titanium nitride, titanium carbonitride and titanium carbide coatings

Cited by 13 publications

References 7 publications

Mechanical and tribological properties of Ti-containing carbon nanocomposite coatings deposited on TiAlV alloys

Mechanical and tribological properties of Ti-containing carbon nanocomposite coatings deposited on TiAlV alloys

The influence of structure changes in the properties of TiCxOy decorative thin films

Effect of adhesive and cohesive strength on the tribological behaviour of non‐reactively sputtered TiC thin films

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