Showing papers in "Wear in 2017"

TL;DR: In this paper, the effects of surface textures under the operative lubrication regimes in the Stribeck curve, with a clear distinction between conformal-and non-conformal contacts, are discussed.

TL;DR: In this paper, a review of the work done to understand cavitation damage is presented, including the theoretical formulation of cavitation bubble collapse and the estimate of bubble collapse pressure, the techniques for measurement of Cavitation damage in the laboratory and the special facilities for measuring cavitation damages in liquid sodium, the instrumentation for measuring collapse pressure during cavitation as well as predicting damage from material properties, concluding with a discussion on reasons for limited success in achieving good damage prediction.

TL;DR: In this paper, an analysis of tool wear of P25 cemented carbide inserts in finish turning of AISI 1045 carbon steel for different cooling conditions: dry cutting, minimum quantity cooling-lubrication (MQCL) and MQCL with phosphate ester-based EP/AW additive is presented.

TL;DR: In this paper, a cryogenic cooling unit using liquid nitrogen (LN 2 ) was developed to cool the tool-chip interface, which is not only more efficient but also environmental friendly.

TL;DR: In this paper, the role played by the globular microstructure of rheocast alloys and composites has been tested to determine the role of the micro-structure and evaluate if the increase observed in other mechanical properties is also translated to wear behavior.

TL;DR: In this paper, two distinct Cr3C2-based compositions of Cr3c2-50NiCrMoNb and Cr3 c2-37WC-18NiCoCr powders were selected as interesting alternatives to conventional C2-25NiCr.

TL;DR: In this article, the performance of cast nickel aluminium bronze, a propulsion material of choice, under cavitation erosion and sliding wear conditions in saline solutions is investigated. And the challenges in quantification of the interactions between mechanical and electrochemical processes present under marine tribocorrosion are discussed in detail.

TL;DR: In this article, the effects of introducing glass fiber and/or carbon fiber (CF) filler materials on the friction and wear characteristics of ultra-high molecular weight polyethylene (UHMWPE)-based composites were investigated.

TL;DR: In this article, the results show that the H COATING/E COATING and E COATING /E SUBSTRATE ratios significantly affect the anti-wear and scratch performance of the thin coatings.

TL;DR: In this paper, a post-process finishing technique based on ultrasonic cavitation effects in a solid-liquid mixture was introduced for PBF-built components, and trials were conducted on side surfaces of Inconel 625 manufactured by Direct Metal Laser Sintering.

TL;DR: Wear and friction properties depend on many parameters such as normal load and material hardness as mentioned in this paper, however, coupled contributions of microstructure and abrasive particle size are less investigated.

TL;DR: In this paper, the authors present the results of a study of the mechanisms of delamination and the formation of longitudinal cracks in the structure of multi-layered nano-structured coatings to predict the mechanisms for further improvement of tool life and the reliability of metal cutting tools.

TL;DR: In this paper, the authors explored the mechanisms of cracking in multi-layered composite nano-structured coatings deposited through the use of the technologies of filtered cathodicvacuum arc deposition (FCVAD) (coatingsZr-ZrN-(ZrCrAl), Cr-CrN-(TiCrAl)N, Zr- ZrN -(ZrnbTiAl)) and lateral rotating cathodes (coating Ti-TiAlN-Ti Al), and found that all the coatings selected for study significantly increase the lifetime

TL;DR: In this article, the friction and wear between diamond-like carbon (DLC) films and diamond tips are investigated via molecular dynamics simulations, and it is found that the load can increase wear rate of the DLC film by inducing transition of its wear from adhesive to abrasive type.

TL;DR: The wear rates of both PEEK and CFR-PEEK were very high and almost two orders of magnitude higher than the wear rate of UHMWPE under comparable conditions, highlighting that these materials may not be suitable alternatives for UH MWPE in low-conformity designs.

TL;DR: In this paper, a static diffusion couple method is used to simulate the complex reaction mechanisms occurring at the tool-chip interface during machining and is validated with dynamic turning trials with two graphite rods which secure the sample under a clamping load at the required temperature and pressure.

TL;DR: In this article, three kinds of casting HSSs with VC, M 6 C or M 2 C type carbide were prepared respectively through the reasonable design of alloy elements, and then the effects of carbide type on wear behaviours were researched under different abrasive particle size and load using abrasive wear testing machine.

TL;DR: In this paper, surface texturing with different geometrical characteristics was made on the flank face of the WC/Co carbide tools, which served as a storage for powder chip which can protect the texture groove from abrasion.

TL;DR: In this paper, the applicability of wollastonite as a potential non-asbestos based fibre/filler cum friction modifier is explored taking in to account the shapes of the materials used for manufacturing the brake friction composite.

TL;DR: In this article, the authors evaluated the effect of hybrid lubricating/cooling strategies to reduce the tool wear when finishing machining the wrought Ti6Al4V titanium alloy, commonly regarded as a DTC alloy.

TL;DR: In this article, the effect of B4C reinforcement particle size on the abrasive wear behavior of Al-B4C composites was investigated, and it was shown that larger reinforcements are prone to particle pullout, thereby negating the benefit of higher hardness.

TL;DR: In this paper, a pulsed-DC plasma-assisted chemical vapor deposition (PACVD) method was used to improve the wear and corrosion resistance of TiSiN hard ceramic coatings on Ti-6Al-4V bio-alloy.

TL;DR: In this paper, the authors examined the effect of porous polyimide (PI) on the performance of rolling bearings under starved lubrication conditions and found that PI can easily release oil mainly by thermal expansion rather than centrifugation.

TL;DR: In this paper, the influence of both friction and wear of a water-lubricated bearing on the bearing vibration under different rubber materials of the bearing lining and working conditions was explored, and both theoretical analysis and test methods were applied.

TL;DR: In this paper, the degradation processes of pipeline steels (API X42, API X70 and API X100) in CO2 containing salt water were analyzed and the individual contribution of erosion and corrosion components of mass loss was quantified and mechanisms by which erosion affects corrosion and vice-versa were identified.

TL;DR: In this paper, the impact of damage on the tensile strength of carbon fiber reinforced plastic (CFRP) laminates was analyzed using X-ray tomography and scanning electron microscopy (SEM).

TL;DR: In the EU, PM10 from the wear of disc brakes can contribute up to 50% of the total non-exhaust emissions from road transport as discussed by the authors, which originates from the contact surfaces of the friction material.

TL;DR: In this paper, a series of experimental tests were conducted in a specially designed tester to investigate the tribological characteristics of the biomimetic materials and running conditions of a water-lubricated stern tube bearing.

TL;DR: A review of the superhydrophobicity of engineering surfaces with particular emphasis on the effect of friction and wear on the wetting characteristics is presented in this article, where different theoretical aspects, experimental practices, and numerical modeling techniques are discussed.

TL;DR: In this article, a theoretical model of magnetically induced normal and shear forces acting on the abrasive is also proposed in the ball end magnetorheological finishing (BEMRF) process.