Papers by Keyword: Coating Process

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Authors: Michael Schütze
Abstract: The paper reviews the advantages of diffusion coating and the parameters deciding an optimum coating performance. Furthermore, innovative coating approaches are presented which have a significant potential beyond existing diffusion coating solutions.
Authors: Totka Bakalova, Nikolay Petkov, Tomáš Blažek, Pavel Kejzlar, Petr Louda, Lukáš Voleský
Abstract: Titanium carbonitride (TiCN) thin films with differing C content were deposited by cathodic arc evaporation of pure Ti in a gas composite environment of N2 and C2H2. Scanning electron microscopy (SEM), scratch test, mechanical profilometer and “ball-on-disc” tribometer methods were used to characterize the surface, the coefficient of friction (CoF) of the TiCN thin films and the evaluated wear. An increase of the C2H2 fraction in the gas environment leads to a continuous increase in the deposition rate of the TiCN thin films, as well as an increase in the adhesion of the films to the substrate and the values of the CoF. Tribological test results (when tested against Si3N4 balls) show an increase in the friction coefficient of the TiCN from 0.08 to 0.32, with increasing carbon concentration in the film. The CoF decreases rapidly to 0.06 at a C content of 20.6 at.%, N 38.4 at.% and Ti 41.0 at.%.
Authors: Tao Yu Wan, G.K. Stylios
Abstract: This study examined the effect of the coating speed, coating solution, cure temperature, knife gap and fabric matrixes on surface properties, water vapor permeability and hydrostatic head test. The optimum conditions for surface high water vapour permeability that enables the user to “dial in” the right balance of properties based on the findings of the experimental. This sample showed high excellent resistance to +7m in hydrostatic head tests for a single-layer coated fabric and. Surface morphology showed that the coating was continuous without cracks or pin holes and appeared to be well adhered to the substrate even after a harsh wash.
Authors: Tao Yu Wan, G.K. Stylios
Abstract: In this work, polyurethane coating on the fabrics is studied in the Basecoater 200. The structure and morphology of coated fabrics were investigated using SEM and soaking test in the cured coated samples. Coating thicknesses, surface friction coefficient and surface roughness variation of the samples were measured using the surface tester of the KESF. Results showed that uniform and cross linking degree of the surface layer of coated samples have close relevant with coat processing. The performance quality of end products can be achieved by optimization of process variables, including coating speed, coating solution, and cure temperature and fabric matrixes during fabric coating processing.
Authors: Ying Na Zhao, Meng Zhang, Jiang Ren, Xiong Feng Zeng
Abstract: The modified mullite fiber was used to toughen the mullite ceramic, which can effectively overcome the brittleness of ceramic materials and improve the material strength and toughness. Using 8ZrOCl2•H2O as precursor, anhydrous ethanol as solvent, H2O2 as hydrolysis promoter and NH3·H2O as precipitant, the stable and transparent zirconium sol could be obtained by sol-gel process, which coated mullite short fiber. The results showed that the stable and transparent ZrO2 sol was obtained when pH value was 3.8~4.8 and reaction temperature was at 25°C. XRD results indicated that monoclinic ZrO2 particles grew up and formed after heat-treatment at 700°C. The coating ZrO2 film combined with mullite fiber homogeneously and closely, and the film thickness was about 1 μm.
Authors: Ning Bo Huo, Sheng Liu, Xiao Jinga Jia
Abstract: Adjusting the proportion of gases and stirring rate and other parameters, the value of pH, electrical conductivity, electrode potential, temperature of the system were tested online under different parameters. According to the results of scanning electron microscopy , the coating effect of different reaction stages and the influence of different coating processes were analyzed.
Authors: Liang Han, Wen Zhou Lu, Shen Wang Wang, Jian Shen, Ya Fei Hao, Feng Xiao
Abstract: Li-ion power battery has many advantages, such as high energy, lightweight, long cycle life and so on. It has become a research hotspot in the new energy field. This paper describes the Li-ion power battery coating and drying process which has a significant effect on the performance of Li-ion power battery. According to the market research and business requirements, the project decides to apply heated-wind circulating and shock drying method to dry of the Li-ion power battery electrode. The method has been successfully applied to the production, which has achieved excellent results in energy saving and improving enterprise efficiency.
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