Tribological performance of a DLC coating in combination with water-based lubricants

Persson, Karin; Gåhlin, Rickard

doi:10.1016/s0301-679x(03)00103-8

Cited by 46 publications

(21 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The tribological properties of a thick DLC coating with a graded and multi-layered structure were investigated by Xiang et al 181 Cr layers were again found to improve adhesion, whilst the transitional section that comprised CrN z and C x Cr y layers increased the load bearing capacity. …”

Section: Dlc Reviewmentioning

confidence: 99%

Diamond like carbon coatings for tribology: production techniques, characterisation methods and applications

Hainsworth¹,

Uhure²

2007

International Materials Reviews

184

View full text Add to dashboard Cite

There are numerous types of surface coatings available to engineers in order to improve the friction and wear resistance of components. In order to successfully use these coatings in practice, it is important to understand the different types of coatings available, and the factors that control their mechanical and tribological properties. This paper will focus on the application of diamond-like carbon (DLC) coatings in tribological applications. Thus far, DLC coatings have found broad industrial application, particularly in optical and electronic areas. In tribological applications, DLC coatings are now being used successfully as coatings for ball bearings where they decrease the friction coefficient between the ball and race, in shaving applications where they increase the life of razor blades in wet shaving applications, and increasingly in automotive applications such as racing engines and standard production vehicles.The structure and mechanical properties of DLC coatings are dependent on the deposition method and the incorporation of additional elements such as nitrogen, hydrogen, silicon and metal dopants. These additional elements control the hardness of the resultant film, the level of residual stress and the tribological properties. As diamond-like carbon films increasingly become adopted for use in industry, it is important to review the factors that control their 2 of 42 DLC Reviewproperties, and thus, the ultimate performance of these coated components in practical tribological applications.

show abstract

Section: Dlc Reviewmentioning

confidence: 99%

Diamond like carbon coatings for tribology: production techniques, characterisation methods and applications

Hainsworth¹,

Uhure²

2007

International Materials Reviews

184

View full text Add to dashboard Cite

show abstract

“…For a-CN x coatings, many scientists have paid more attentions to their micro-and macro-tribological properties in various gas environments since 1996 [21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36], but most of researches are usually related to the performance of a-CN x coatings in hard disk drive applications. It is known that the usage of DLC or a-CN x coating with water-based lubricant containing a little additive might create the new, ''green'' lubricant [37][38][39][40][41][42]. However, the studies on the friction and wear behavior of a-CN x coatings in water have not been carried out.…”

Section: Introductionmentioning

confidence: 99%

Friction and wear properties of CNx/SiC in water lubrication

2005

View full text Add to dashboard Cite

Amorphous carbon nitride coatings (a-CN x ) were deposited on SiC disk by ion beam assisted deposition (IBAD). The tribological behavior of a-CN x coating sliding against SiC ball in water was investigated and compared with that of SiC/SiC system at room temperature. The influences of testing conditions on friction coefficient and specific wear rate of both kinds of tribopairs were studied. The worn surfaces on disks were observed by scanning electron microscope (SEM). The results indicate that the running-in period of a-CN x /SiC was shorter than that of SiC/SiC system in water. At a sliding velocity of 120 mm/s, the mean steady-state friction coefficients of SiC/SiC (0.096) was higher than that of a-CN x /SiC (0.05), while at 160 mm/s, lower friction coefficient (0.01) was obtained for SiC/SiC in water. With an increment of normal load, the mean steady-state friction coefficients after running-in first decreased, reaching a minimum value, and then increased. For self-mated SiC, the specific wear rate of SiC ball was a little higher than that of SiC disk, while for a-CN x /SiC, the specific wear rate of SiC ball were 10 times smaller than that of a-CN x coating. Furthermore, the specific wear rate of SiC ball sliding against a-CN x coating was reduced by a factor up to 100$1000 in comparison to that against SiC in water. The wear mechanism of SiC/SiC system in water is related to micro-fracture of ceramic and instability of tribochemical reaction layer. Conversely, wear mechanism for a-CN x /SiC is related to formation and transfer of easy-shear friction layer.

show abstract

“…In dry sliding contact, the abrasive coating asperities can be larger than the hydrodynamic or elasto-hydrodynamic film thickness, and the film then would not decrease or prevent asperity contact. However, studies have already shown increased tribological performance of coated systems through the use of water-based lubricants [14,15]. In this study, the effects of a lubricant on the performance of a similarly coated system are investigated by observing changes in the B 4 C coating abrasiveness.…”

Section: Introductionmentioning

confidence: 99%

Effects of lubrication and humidity on the abrasiveness of a thin boron carbide coating

et al. 2005

View full text Add to dashboard Cite

Studies using thin boron carbide (B 4 C) coatings have previously been performed in order to investigate their potential use as finite-life run-in coatings. Such coatings have been shown to polish the mating surface in a relatively short time. The inherent ability of these coatings to polish can potentially allow them to function as finite-life run-in coatings. Employing such coatings requires a thorough understanding of the parameters which directly influence the changes that occur in the coating abrasiveness throughout the duration of the polishing process. In past studies, changes in the coating abrasiveness during dry sliding wear under ambient conditions have been investigated. However, both lubrication and humidity can strongly influence the abrasive wear process. In this study, the influences of the operating environment, namely humidity and lubrication, on the coating abrasiveness are directly investigated. The coating abrasiveness decreases at a slower rate when a lubricant is added and when the humidity decreases.

show abstract

Tribological performance of a DLC coating in combination with water-based lubricants

Cited by 46 publications

References 7 publications

Diamond like carbon coatings for tribology: production techniques, characterisation methods and applications

Diamond like carbon coatings for tribology: production techniques, characterisation methods and applications

Friction and wear properties of CNx/SiC in water lubrication

Effects of lubrication and humidity on the abrasiveness of a thin boron carbide coating

Contact Info

Product

Resources

About