Tribological performance of SiC and TiB2 against SiC and Al2O3 at low sliding speeds

Wäsche, Rolf; Klaffke, D.; Troczynski, Tom

doi:10.1016/s0043-1648(03)00444-7

Cited by 33 publications

(17 citation statements)

References 19 publications

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“…The variation in steady-state COF (0.65 to 0.53) with load is less for both the TiB 2 ceramics when fretted against WC-Co than that of bearing steel. In an earlier study, Wasche et al [21] had also observed similar COF (~0.5) of TiB 2 against other ceramic counterbodies such as SiC and Al 2 O 3 during slow speed sliding at ambient conditions and 10 N load.…”

Section: Wc-co Counterbodymentioning

confidence: 60%

“…[1] For example, Wasche and co-workers observed good wear resistance of TiB 2 (wear rate~10 -6 mm 3 /Nm) during reciprocatory sliding motion against two different counterbodies, namely, SiC and Al 2 O 3 . [21] In another work, Basu et al, [20] while investigating the fretting wear behavior of monolithic TiB 2 and TiB 2 reinforced with 16 vol pct Ni 3 (Al,Ti) against bearing grade steel, noted that the incorporation of the intermetallic phase did not affect the tribological performance of TiB 2 to any noticeable extent. Additionally, incorporation of TiB 2 (up to 20 wt pct) into MoSi 2 has been found to result in significant improvement in the wear resistance while extending the mild wear regime.…”

Section: Introductionmentioning

confidence: 98%

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Understanding Influence of MoSi2 Addition (5 Weight Percent) on Tribological Properties of TiB2

Mukhopadhyay

Raju

Basu

2008

Metall Mater Trans A

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In densifying engineering ceramics such as TiB 2 using nonmetallic sinter additives, it is important to assess the influence of the addition of sinter-aid on the properties of TiB 2 . The present article reports how a small addition of MoSi 2 (5 wt pct) sinter-aid enhances the wear resistance of TiB 2 at mode-I fretting contact. This has been confirmed using a series of unlubricated wear tests on hot-pressed ceramics using two different counterbodies, viz. bearing steel and WC-6 wt pct Co cemented carbide, under identical testing conditions. Steady-state coefficient of friction (COF) against steel counterbody has been found to noticeably vary in the range of 0.5 to 1, with variation in load or MoSi 2 addition. However, insignificant variation in COF (~0.5) has been recorded during fretting against WC-Co. Furthermore, lower wear rate (~10 -6 mm 3 /Nm) is measured against the cemented carbide, as compared to that against steel (~10 -5 mm 3 /Nm). It has been observed that the material removal of TiB 2 -based ceramics against steel involves tribochemical wear as well as abrasive wear, and the occurrence of tribochemical wear is explained in terms of various feasible reactions at the tribological interface. Lower contact area, resulting in reduced adhesive wear, along with the absence of additional tribochemical wear, has been attributed to lower wear rate as observed after fretting against the harder (WC-Co) counterbody. A number of possible reactions along with their thermodynamic feasibility are discussed to explain the tribochemical wear at the interface of the mating couple. Irrespective of counterbody or material composition, the measured wear volume exhibits linear dependency on abrasion parameter, confirming the role of material parameters on the contribution of abrasive wear to the material removal/damage of the investigated materials.

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Section: Wc-co Counterbodymentioning

confidence: 60%

Section: Introductionmentioning

confidence: 98%

Understanding Influence of MoSi2 Addition (5 Weight Percent) on Tribological Properties of TiB2

Mukhopadhyay

Raju

Basu

2008

Metall Mater Trans A

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“…Physical vapour deposition (PVD) technique is commonly used for generation of TiB 2 coatings [6]. The TiB 2 films deposited using this technique have attracted increasing attention due to their mechanical and tribological properties [8], but a detailed investigation, however, of the tribological properties of systems with TiB 2 as a sliding partner is largely lacking. Many results have been published on tribosystems where TiB 2 was acting to increase the wear resistance by improving fracture toughness [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Assessment and application of TiB2 coating in sliding pair under lubrication conditions

Lubas

2012

Wear

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“…10(a) and (b), the main wear mechanism could be attributed to micro-cracking and pulling of the grains in the composite material, which results in cavity formation and, later, filling of these cavities by the wear debris. 25 Fig. 10(c) also shows the effect of normal load on COF (μ) at room temperature (25 • C).…”

Section: Wear and Friction Propertiesmentioning

confidence: 99%

“…There are numerous studies on wear and friction properties of conventionally made SiC ceramics. [22][23][24][25][26][27][28][29] However, very few reports have focused on the wear properties of SiC/Si composites synthesized from natural products. 30 In this work, the silicon impregnation method has been used to fabricate "sprocket shaped" SiC/Si structures from wood.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization, and wear and friction properties of variably structured SiC/Si elements made from wood by molten Si impregnation

Dhiman¹,

Rana²,

Bengu³

et al. 2012

Journal of the European Ceramic Society

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We have synthesized pre-shaped SiC/Si ceramic material elements from charcoal (obtained from wood) by impregnation with molten silicon, which takes place in a two-stage process. In the first process, a porous structure of connected micro-crystals of ␤-SiC is formed, while, in the second process, molten Si totally or partly infiltrates the remaining open regions. This process forms a dense material with cubic (␤-)SiC crystallites, of which the majority is imbedded in amorphous Si. The synthesis of preshaped "sprocket" elements demonstrates that desired shapes of such a dense SiC/Si composite ceramic material can be achieved, thus suggesting new industrial applications.The structure and composition of numerous as-synthesized samples were characterized in detail by using a wide range of techniques. Wear and friction properties were also investigated, with polished samples. The properties found for the present samples are very promising for abrasive applications and for new generation brake systems.

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Tribological performance of SiC and TiB2 against SiC and Al2O3 at low sliding speeds

Cited by 33 publications

References 19 publications

Understanding Influence of MoSi2 Addition (5 Weight Percent) on Tribological Properties of TiB2

Understanding Influence of MoSi2 Addition (5 Weight Percent) on Tribological Properties of TiB2

Assessment and application of TiB2 coating in sliding pair under lubrication conditions

Synthesis, characterization, and wear and friction properties of variably structured SiC/Si elements made from wood by molten Si impregnation

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