Wear prediction of ceramics

Hsu, Stephen M.; Shen, M C.

doi:10.1016/j.wear.2003.11.002

Cited by 126 publications

(58 citation statements)

References 20 publications

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“…The values of H IT and E IT , determined as average of values and measured in the range of 2 lm-maximum depth of indentation at 10 N by continuous stiffness indentation method, represent the mechanical properties of the coating at micro-scale, which can be used for further characterization of the coating, for example, in the indentation fracture toughness equations (Ref 7,44,45) or for wear prediction equations (Ref [46][47][48][49].…”

Section: Resultsmentioning

confidence: 99%

The Instrumented Indentation Study of HVOF-Sprayed Hardmetal Coatings

et al. 2011

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Elastic-plastic properties, namely, hardness and YoungÕs modulus, of four HVOF-sprayed hardmetal coatings were measured by instrumented indentation using Oliver-Pharr method Nanoindenter XP MTS with a continuous stiffness measurement (CSM) module. The results show that with sufficient number of CSM measurements, one can distinguish between indents made in the hard particles and indents made in the binder material. This can be accomplished by analyzing the plots of hardness and YoungÕs modulus versus load (or versus indentation depth). Further development of the dependence curves enables the load (or indentation depth) to be set to correspond to the point of transition from a single structure component to the composite material and to determine the properties of both. Comparison of results of CSM measurement with the results of single indentation measurement at a defined load reveals a new perspective on the origin of the indentation size effect in hardmetal coatings. The measurements show that the increase in both the hardness and YoungÕs modulus with decreasing load is caused mainly by the predominant influence of hard particles in the coatings.

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Section: Resultsmentioning

confidence: 99%

The Instrumented Indentation Study of HVOF-Sprayed Hardmetal Coatings

et al. 2011

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“…The erosive wear can be reduced by changing traditional cast iron to rubber coated surfaces in, e.g., pumps and pipe lines. Change from metallic component to polymers will normally reduce friction while ceramics are tribologically beneficial to use both in oil and water lubricated contacts [61]. Recently, research efforts in high-entropy alloys intensified and mainly because of their very distinct structures and compositions, they were shown to exhibit unusual physical and mechanical properties [62] as well as impressive resistance to wear and corrosion [63,64].…”

Section: Methodsmentioning

confidence: 99%

Influence of tribology on global energy consumption, costs and emissions

2017

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Abstract:Calculations of the impact of friction and wear on energy consumption, economic expenditure, and CO 2 emissions are presented on a global scale. This impact study covers the four main energy consuming sectors: transportation, manufacturing, power generation, and residential. Previously published four case studies on passenger cars, trucks and buses, paper machines and the mining industry were included in our detailed calculations as reference data in our current analyses. The following can be concluded:-In total, ~23% (119 EJ) of the world's total energy consumption originates from tribological contacts. Of that 20% (103 EJ) is used to overcome friction and 3% (16 EJ) is used to remanufacture worn parts and spare equipment due to wear and wear-related failures.-By taking advantage of the new surface, materials, and lubrication technologies for friction reduction and wear protection in vehicles, machinery and other equipment worldwide, energy losses due to friction and wear could potentially be reduced by 40% in the long term (15 years)and by 18% in the short term (8 years). On global scale, these savings would amount to 1.4% of the GDP annually and 8.7% of the total energy consumption in the long term.-The largest short term energy savings are envisioned in transportation (25%) and in the power generation (20%) while the potential savings in the manufacturing and residential sectors are estimated to be ~10%. In the longer terms, the savings would be 55%, 40%, 25%, and 20%, respectively.-Implementing advanced tribological technologies can also reduce the CO 2 emissions globally by as much as 1,460 MtCO 2 and result in 450,000 million Euros cost savings in the short term. In the longer term, the reduction can be 3,140 MtCO 2 and the cost savings 970,000 million Euros.Fifty years ago, wear and wear-related failures were a major concern for UK industry and their mitigation was considered to be the major contributor to potential economic savings by as much as 95% in ten years by the development and deployment of new tribological solutions. The corresponding estimated savings are today still of the same orders but the calculated contribution to cost reduction is about 74% by friction reduction and to 26% from better wear protection. Overall, wear appears to be more critical than friction as it may result in catastrophic failures and operational breakdowns that can adversely impact productivity and hence cost.

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“…Therefore, by a proper selection of a tribological pair it is possible to achieve very low wear rates. The dry sliding behaviour of ceramics is characterized by three main damage mechanisms [34,35]:…”

Section: Sliding Wearmentioning

confidence: 99%

Materials for Tribology

Straffelini

2015

Springer Tracts in Mechanical Engineering

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Wear prediction of ceramics

Cited by 126 publications

References 20 publications

The Instrumented Indentation Study of HVOF-Sprayed Hardmetal Coatings

The Instrumented Indentation Study of HVOF-Sprayed Hardmetal Coatings

Influence of tribology on global energy consumption, costs and emissions

Materials for Tribology

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