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Showing 1 to 20 of 198 for “"wc"”.
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Cavitation erosion of WC-Co
… involving the vibratory cavitation erosion of WC-Co alloys was undertaken in order to determine the mechanisms of material removal. Nineteen grades of WC-Co alloys were studied. These alloys had been previously characterised according to microstructural and mechanical properties. Further …
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The erosion of ultrafine WC-Co
A series of four ultrafine WC-Co alloys of varying cobalt contents has been sintered from powder produced through the spray conversion process. The materials have been characterised and subjected to slurry erosion and cavitation erosion. A further twelve WC-Co alloys of varying grain sizes and …
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The erosion of WC-Co coatings
… particle and slurry erosive wear behaviour of WC-Co hard metal coatings. The coating compositions were WC-12%Co and WC-10%Co-4%Cr and were produced using both the TAFA JP5000 and the METCO Diamond Jet (DJ) thermal spray systems.
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The fracture toughness of ultrafine WC-Co Alloys
… 0 to 0.8wt%. A series of twenty-four ultrafine WC-Co alloys were sintered from powders produced through three different production routes, namely, the spray conversion process and two variations of the conventional powder production methods. A further twelve WC-Co alloys with three different …
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The solid particle erosion of WC-Co alloys
An investigation involving the erosion of WC-Co alloys by solid particle impact erosion was undertaken to determine the mechanism by which material is removed. For this purpose a simple particle-gas stream erosion apparatus was employed. The nineteen different WC-Co alloys studied were initially …
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Consolidation of WC-Co nanocomposites synthesised by mechanical alloying
… properties of a tungsten carbide-cobalt (WC-Co) hardmetal, based on 10wt% Co, has been established. The effects of high-energy milling for 30, 60, 180 and 300 min and the interrelation between milling time and powder properties, and the resultant effects on the mechanical properties of the …
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A WC-MPS Model for Viscous Free Surface Flows
… moving particle semi-implicit (WCMPS) method modified and improved by Shakibaeinia and Jin (2010) and aims at modifying the WC-MPS model and applying it to free surface flow problems. During this study, the complete theory of the proposed WC-MPS model was introduced. The model …
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Charakterizace žárově stříkaného kovokeramického WC-CoCr povlaku na hořčíkové slitině AZ91
… bakalářské práce je hodnocení kovokeramického WC-CoCr povlaku na hořčíkové slitině AZ91 z hlediska mikrostruktury, chemického a fázového složení a mechanických vlastností. Depozice byla provedena metodou HVOF (High Velocity Oxy-Fuel). Teoretická část je věnována hořčíkovým slitinám se zaměřením …
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Analysis of sintered WC-TIC-6CO by using powder metallurgy process
… used was tungsten carbide with 6wt% cobalt (WC-6Co) and titanium carbide (TiC) as grain growth inhibitor while low density polyethylene (LDPE) and palm stearin (PS) were used as a binder system. The sample was prepared by milling process consisting of WC-6Co at different wt. % of TiC (0.5, …
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A comparative study on wear and corrosion behaviour of tungsten carbide-nickel (Wc-Ni) and tungsten carbide-cobalt (Wc-Co) high velocity oxy-fuel (HVOF) for carbon steel blade
… of the tungsten carbide 10 wt.% nickel (WC-10Ni) and tungsten carbide 12 wt.% w cobalt (WC-12Co) coating deposited by means of HVOF thermal spray onto a continuous digester (CD) blade that made up from carbon steel. The morphology and chemical composition of the coating were characterized …
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Investigation into laser re-melting of inconel 625 HVOF coating blended with WC
… spraying of Diamalloy 1005 powders mixed with WC particles onto steel (304) is considered and laser re-melting of the resulting coatings is examined. Laser re-melting process is modeled to determine the melt layer thickness while temperature increase is formulated using the Fourier heating law. …
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Temperature-Dependent Fracture Toughness Evaluation of WC-10Co4Cr Coating/1018 Low Carbon Steel Substrate System
The temperature-dependent fracture toughness of WC-10Co4Cr coating/1018 low carbon steel substrate, which is a brittle coating/ductile substrate system, is evaluated at microscopic level with two types of models developed in terms of the Arrhenius type equation and rate controlling theory, …
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Behavior and large-scale experimental testing of Steel Plate Shear Walls with Coupling
The Steel Plate Shear Wall with Coupling (SPSW-WC) configuration is an extension of the conventional Steel Plate Shear Wall (SPSW) seismic lateral force resisting system. The SPSW system is composed of a steel frame with web plates between the beams and columns. In North America, the web plates of …
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Differentially expressed genes in aortic cells from atherosclerosis-resistant and atherosclerosis-susceptible pigeons
… differentially expressed between White Carneau (WC) and Show Racer (SR) pigeon aortic smooth muscle cells. The gene(s) responsible for atherosclerotic resistance in cultured SR smooth muscle cells (SMC) were hypothesized to be silent or down regulated in the WC. In the reciprocal experiments, it …
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Identifying fall prevention and management needs of people post-stroke who use wheelchairs and scooters
… post-stroke who use wheelchairs or scooters (WC/S) for mobility represent an understudied and underserved population in fall prevention research. While falls are widely documented among people post-stroke who are ambulatory, little is known about fall incidence, consequences, contributing …
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Statutory and Non-Statutory service-users experiences of gender-responsive practice in a post-Corston (2007) Women's Centre
… and impact of one case study Women’s Centre (WC) in the North of England, functioning as a post-Corston (2007), gender-responsive, non-custodial arena for women serving unpaid work (UW) sentences and women attending voluntarily due to social and structural marginalisation. The former are …
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The Relationship Between Measures of Obesity and Incident Heart Failure: The Multi-Ethnic Study of Atherosclerosis
… body mass index (BMI) and waist circumference (WC) with incident HF. The predictive abilities of BMI and WC for incident HF were determined using receiver operating characterstic curves. After adjusting for confounders, BMI and WC were associated with incident HF in men [1.33 (1.10-1.61) and …
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