Showing papers in "Wear in 2015"

TL;DR: In this article, the performance of nano-lubricants formulated from vegetable (coconut) oil and a mineral oil (500 n base-oil) were compared using a modified pin-on-disc tribometer and a four-ball tester, under boundary/thin film lubrication regime.

TL;DR: In this article, the authors evaluated the tool wear mechanisms arising when semi-finishing turning the EBM Ti6Al4V under dry and cryogenic conditions using a coated tungsten carbide insert at varying cutting speed and feed rate.

TL;DR: In this paper, the tribological improvement of a NiCrBSi laser cladding coating reinforced with different weight percentages of carbides (0-50%) in a powder feeder was studied.

TL;DR: In this paper, a semi-mechanistic model for the erosion of different target materials due to solid particles has been proposed based on the experimental data from direct impingement testing.

TL;DR: In this paper, a commercial friction pad material dry sliding against a cast iron disc was used to investigate the effect of some components of the pad material on the dynamic formation of tribological layer and wear debris.

TL;DR: In this article, the effect of the material type and the morphology of well-known solid lubricant nanoparticles on the tribological properties of poly-ether-etherketone (PEEK) composites was evaluated and compared.

TL;DR: In this paper, a computational fluid dynamics (CFD) simulation is used to characterize the particle impact speed, angle and frequency at specific locations on the specimen, and the measured particle impact data are related to the measured erosion depth to achieve an erosion equation from submerged testing.

TL;DR: In this paper, the tribological properties of friction, wear, and extreme pressure of two synthetic lubricants: GL-4 (SAE 75 W-85), a fully-formulated oil; and Poly-alpha olefin 8 (PAO 8) base oil were discussed.

TL;DR: In this article, a detailed surface map of erosion depth in a standard elbow (90° bend, with bend radius to pipe diameter ratio equal to 1.5) is presented using measurements taken with a surface profiler.

TL;DR: Graphene and MoS 2 were dispersed in esterified bio-oil (EBO) and evaluated as lubricants for steel/steel contact in this article, where the tribological behaviors of steel and steel pairs were investigated under lubrication of graphene/MoS 2 blends with different mass ratios, loads and rotating speeds.

TL;DR: In this article, a twin-disc method has been used to assess the suitability of various candidate cladding materials, including Hadfield, Stellite 6, Maraging and 316 Stainless Steels.

TL;DR: In this paper, the authors used two types of PVD-coated carbide tools (TiAlN and TiSiN) to determine the mechanism of cutting tool wear and breakage and the effects of tool angle, tool diameter, tool extended length, cutting force and cutting induced vibration on the tools.

TL;DR: In this paper, the electrochemical and tribological properties of β-type Ti alloys were investigated for comparing the same set of the results with and without wear test using XRD and SEM investigations and hardness measurements were utilized to analyze the structure, surface morphology and mechanical behavior of the alloys Simulated body fluid (SBF) was used as corrosive environment Tribocorrosion tests were carried out at open circuit potential (OCP), cathodic and three different anodic potentials under reciprocating sliding condition Potentiodynamic scans were obtained and calculated the friction coefficient,

TL;DR: In this paper, the effect of elastic modulus mismatch between coating and substrate on the friction and wear properties was analyzed by optical profilometer, scanning electron microscope and focused ion beam techniques.

TL;DR: In this article, the metal ion release of a low carbon CoCrMo subjected to different electrochemical and tribocorrosion conditions in NaCl, phosphate buffer solution (PBS) and PBS with protein (albumin) at the human body conditions of 37°C.

TL;DR: Using an Eulerian-Lagrangian approach, numerical erosion modeling of a 90° sharp bend in water-sand slurry flow is performed as mentioned in this paper, where two different sand types, 25µm sharp silica sand and 256µmm rounded quartz are used.

TL;DR: In this article, an extensive investigation of machine cut acetal gear wear and thermal mechanical contact behavior was carried out using a new and unique polymer gear test rig, which allowed the effect of misalignment on polymer gear engagement and the gear surface wear to be recorded continuously.

TL;DR: In this paper, a CBZ-1 tribo-tester was used to conduct sliding wear tests between NBR pins and 1Cr18Ni9Ti stainless steel discs under dry sliding conditions.

TL;DR: In this article, periodic cross-like patterns with different structural wavelengths (6 and 9µm) were fabricated by laser-interference patterning on stainless steel samples (AISI-304).

TL;DR: In this paper, an investigation of the destructive sectioning of a failed low speed planetary stage WTGB and the damage found at manganese sulphide (MnS) inclusions is presented.

TL;DR: In this article, the authors examined brake friction materials containing nanoclay and multi-wall carbon nanotube (MWCNT) to determine their effect on the tribo-performance.

TL;DR: In this article, a comparative sliding wear behavior of electrodeposited nickel-tungsten (Ni-W) alloy and conventional hard chrome (HCr) coatings was analyzed using pin on disc configuration against WC-Co disc at three different loads.

TL;DR: In this article, the ultrasonic vibration on the diamond wheel surface has been used to improve the self-sharpening property of a diamond wheel, and the results showed that the diamond work surface was steady kept sharpness even with the increasing of cumulative material removal volume.

TL;DR: In this article, wear-resistant steels with initial hardness ranging from 400 to 750 HV were investigated in single-grit abrasion, and the results showed that when the surface loading was sufficiently increased, the transition to a high wear rate mechanism was observed.

TL;DR: In this paper, the use of ionic liquids (ILs) as additive in diesel engine lubricants has been investigated and an interesting interference between existing lubricant additives and added ILs in a boundary film formation process has been observed.

TL;DR: In this paper, the authors compared the tool life during laser assisted machining, dry milling, milling with flood emulsion and a hybrid laser+MQL process and found that conventional coolants offer superior tool life at the standard cutting speeds recommended by the tooling manufacturer, but at higher speeds the coolant deteriorates tool life due to thermal shock/fatigue.

TL;DR: In this article, the emission of airborne brake wear particles due to non-asbestos organic friction material was studied for two passenger cars and a middle class truck, and the results showed that the resuspended brake wear particle emission during acceleration tended to increase with the initial speed, significantly contributing to the total emission.

TL;DR: In this article, a hybrid plasminar spray process was used to inject fine, rounded particles interspersed within larger NiCrAlY lamellae, which only caused marginal changes in hardness due to the limited particles-matrix cohesion.

TL;DR: In this paper, the effect of 2% V, 2% Nb plus 2% Ti added to a 17% Cr white iron was studied and the results indicated a considerable better wear resistance for the alloyed heat treated iron compared with those as-cast and unalloyed irons.

TL;DR: In this paper, the effect of initial surface roughness on the WDE of a special martensitic stainless steel (12%Cr-steel) and Ti6Al4V is investigated.