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Showing 1 to 20 of 244 for “"abrasion"”.
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Role of toughness in abrasion, and impact-abrasion wear
… in increasing wear resistance in impact-abrasion conditions, in an experiment that, for the first time, decouples toughness from microstructure- and hardness-induced effects. The relevant literature has been critically examined to highlight the roles of properties other than hardness, …
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Abrasion-corrosion of downhole drill tool components
… is a Schlumberger funded PhD project entitled ‘Abrasion-corrosion of downhole drill tool components’. The objective of this project was to replicate the wear-corrosion mechanisms of tungsten carbide (WC)-based hardmetals and coatings occurring in downhole environments (pH 9-11) under controlled …
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Saponin Removal from Quinoa by Abrasion Processing
… processing methods use a combination of abrasion and turbulent water flow to remove saponin. This study will address the following research question: How will grain-to-grain and grain-to-surface abrasion affect the processing time to remove saponin from quinoa? In particular, can …
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Fluvial bedrock abrasion by bedload : process and form
… mechanisms of erosion in bedrock river incision: abrasion by bedload. Both long term landscape evolution and physical process based models of bedrock incision would benefit from a better understanding of the controls and behaviour of the abrasion process in natural substrates and settings. A field …
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Generation of graphite particles by abrasion and their characterization
… of graphite particles (dust) produced by abrasion that would occur in an operating pebble bed reactor is of interest for reasons of safety, operation, and maintenance. To better understand this abrasion and particle generation, I have completed two independent tests using a custom …
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Abrasion Prediction at Kayraktepe Sediment Bypass Tunnel in Turkey
… sediment bypass tunnels could face major invert abrasion problems due to intense bedload sediment transportation. Three existing abrasion prediction models are introduced developed respectively by Ishibashi (1983), Sklar and Dietrich (2004), and Auel et al. (2015). Those models are applied to …
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The mechanics of abrasion on concrete crosstie rail seats
… bearing area of the crosstie from the rail base. Abrasion is widely considered to be a viable mechanism leading to RSD. The factors that control the abrasion mechanism (i.e. relative slip at the rail seat, normal and shear stresses, presence of abrasive fines, and moisture) are frequently …
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Wear mechanisms of chemically crosslinked hydrogels under mild abrasion
The structural and mechanical resemblance of hydrogels to cartilage makes them promising candidates for cartilage replacement in load bearing joints. These biphasic materials are composed of an elastic network that retains a large volume of water allowing them to efficiently maintain smooth sliding …
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Improvement of scratch and abrasion resistance properties of automobile paint
Submitted in fulfillment of the requirements for the degree of Master of Engineering, Chemical Engineering, Durban University of Technology, Durban, South Africa, 2022.
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Abrasion-corrosion of cast CoCrMo in simulated hip joint environments
… presented for the first time for the mapping of abrasion and tribo-corrosion performance of a cast CoCrMo (F75) in simulated hip joint environments. The effects of third body particles have been studied in the MoM context using 4 ?m SiC, 1 ?m and 300 nm Al2O3, as well as sub-micron BaSO4. …
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Grain size distributions of various materials in an abrasion mill
Wet abrasion of sand-sized quartz and orthoclase in polyethylene bottles for 912 hours showed that abrasion of fine material is practically negligible, in agreement with Kuenen (1959). The size distributions of the sand. sized quartz and orthoclase remained unchanged. The size distributions of …
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The colouring, sealing and abrasion resistance of anodic oxide coatings
… to play a significant role. The admittance-abrasion (Y-?) profile was used to supplement other test data. An accelated sulphur dioxide test was investigated, the optimum conditions for which were 40[degrees]C for 6 hours. The presence of a sealing bloom was determined by a simple go/no go …
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A New Abrasion Method for Textile Testing; Comparison of Effects of This Method With Effects of Other Abrasion Machines; And Use of This Method Intextile Teaching
Made available in DSpace on 2014-12-04T17:32:41Z (GMT). No. of bitstreams: 1 0006985.pdf: 10287990 bytes, checksum: ad6ac41fd631210e9740d2f27412e8f1 (MD5) Previous issue date: 1953
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Innovative composite enamel coatings with improved abrasion resistance and mechanical properties
… in some fields. Enamel coatings show non-optimal abrasion resistance and poor mechanical properties due to the brittle-prone behavior of the glassy matrix. Abrasion and tensile stresses are very common mechanical solicitations that these coatings are subjected to in everyday use. Degradation due …
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Inorganic-Organic Sol-Gel Derived Hybrid Materials as Abrasion Resistant Coatings
… coatings have demonstrated good to excellent abrasion resistance. Abrasion resistant coatings were prepared by hydrolysis and condensation of mixtures of a triethoxysilylated diethylenetriamine (f-DETA), tetramethoxysilane (TMOS), water and an alcohol in the presence of an acid catalyst (a …
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The effects of abrasion on liquid-fabric interaction of selected nonwoven fabrics
… investigate and compare the effects of different abrasion treatments on the liquid-fabric interaction of selected nonwoven barrier fabrics. The abrasion treatments included moderate and severe abrasion, flat and flat/flex abrasion, and dry and wet abrasion. The liquid-fabric interactions included …
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Wear Mechanism/microstructure Relationships for Laser Processed Cast Iron (Erosion, Abrasion, Martensite, Transformation)
… parameters and with the specimen erosion and abrasion rates. The wear resistances of laser processed samples are much improved due to the elimination of graphite nodules, the increased hardnesses and the greatly refined microstructures, as well as the austenite to martensite transformation in …
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A wear analysis study of selected alternative foundry tooling materials using impact abrasion testing
1 PDF file (vii, 301 pages)
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