Abrasion resistant low friction diamond-like multilayers

Dekempeneer, E.; Acker, Karel Van; Vercammen, K.; Meneve, J.; Neerinck, D.; Eufinger, Stephan; Pappaert, W.; Sercu, M; Smeets, J.

doi:10.1016/s0257-8972(01)01141-0

Cited by 35 publications

(12 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As shown in Table 1, W-containing films have a significant higher value of residual stress than unalloyed film (from 1.1 to w3 GPa), factor which is currently indicated in the literature on hard coatings as one of the most important on determining the hardness of the material [21,22].…”

Section: Mechanical Propertiesmentioning

confidence: 93%

How can H content influence the tribological behaviour of W-containing DLC coatings

Silva

Branco²,

Cavaleiro

2009

Solid State Sciences

View full text Add to dashboard Cite

a b s t r a c tIn this paper, the influence of the addition of W and H to pure DLC coatings on the structural, mechanical and tribological properties will be presented. The coatings were deposited by r.f. magnetron sputtering from a C target embedded with different numbers of W pellets. Working in non-reactive or reactive atmosphere allowed to deposit H-free or H-containing coatings, respectively, on steel and Si substrates. A Cr adhesion interlayer was interposed between the films and the substrate. Films with W content from 0 to 12 at.% and H incorporated up to a maximum value close to 40 at.% were deposited. All coatings had an amorphous structure, although vestiges of crystallinity could be detected in W-containing films. The addition of W led to a significant hardening of the DLC coating (from w10 to 18 GPa); inversely, with H incorporation the hardness drop down to values even lower than that of pure DLC films. It was possible to establish a good correlation between the hardness and the residual stresses. In spite of decreasing friction and wear coefficients when alloying DLC with W, almost no difference was found among the W-DLC films whatever the W content was. A similar trend was achieved with the H addition. However, in this case a decrease in the friction coefficient was registered whereas the wear rate increased. The best performance concerning the friction was obtained for an H-containing coating (0.05) whereas, for the wear resistance, H-free W-DLC films were better performing (0.3 Â 10 À16 m 3 N À1 m À1 ).

show abstract

Section: Mechanical Propertiesmentioning

confidence: 93%

How can H content influence the tribological behaviour of W-containing DLC coatings

Silva

Branco²,

Cavaleiro

2009

Solid State Sciences

View full text Add to dashboard Cite

show abstract

“…Such investigations were extended to a wide variety of elements such as Cr, Zr, Al, Si, etc. [26][27][28][29]. Particularly, Cr-based coatings exhibited the potential to be a good candidate for tribological applications, and in some cases demonstrated better wear resistance than Ti-based coatings [18,19].…”

Section: Materials and Designmentioning

confidence: 99%

Tribology of multilayer coatings for wear reduction: A review

et al. 2017

View full text Add to dashboard Cite

Friction and wear phenomena encountered in mechanical systems with moving components are directly related to efficiency, reliability and life of the system. Hence, minimizing and controlling these phenomena to achieve the desired system performance is crucial. Among the numerous strategies developed for reducing friction and wear, coatings have been successfully utilized in various engineering applications to mitigate tribological problems. One of the benefits of coatings is that they may be fabricated using a variety of materials in several different forms and structures to satisfy the requirements of the operating conditions. Among many types, coatings that are comprised of a combination of materials in the form of a multilayer have been gaining much interest due to the added degree of freedom in tailoring the coating property. In this paper, the properties and development status of multilayer coating systems for tribological applications were reviewed with the aim to gain a better understanding regarding their advantages and limitations. Specifically, focus was given to Ti-based and Cr-based coatings since Ti and Cr were identified as important elements in multilayer coating applications. Emphasis was given to materials, design concepts, mechanical properties, deposition method, and friction and wear characteristics of these types of coatings.

show abstract

“…Unfortunately, the high intrinsic compressive stress of ta-C films limits their practice applications, especially tribological applications. Many processes have been studied to reduce the intrinsic stress, such as incorporating doped elements [2,3], postdeposition thermal annealing [4] and multilayer structure designing [5]. However, the dopant atoms acting as impurities, and annealing leading to graphitization can decrease the hardness and wear resistance of the films [6,7].…”

Section: Introductionmentioning

confidence: 99%