Papers by Keyword: LSCM

Paper TitlePage

Authors: Hidenori Terasaki, Zhang Shouyuan, Yu Ichi Komizo
Abstract: A hybrid in-situ observation system has been developed to study the phase transformation behaviour simultaneously in both real and reciprocal lattice space. This paper presents the development of the observation system. Furthermore, as an example of the application of our developed system, martensitic transformation of Cr–Ni steel along a designed thermal cycle was in-situ tracked with the developed system. As a result of analysing the time-resolved X-ray diffraction data for the observed target, our system could directly detect the effect of transformation strain on austenite during martensitic transformation.
1255
Authors: Hidenori Terasaki, Yu Ichi Komizo
Abstract: The applications of laser scanning confocal microscopy (LSCM) system were introduced to the track the phase transformation of steel. For the low and high carbon steel, the microstructural change along various thermal cycles was directly observed with LSCM system. The nature of non-themoelastic martensite was directly observed. Furthermore, direct checking of the nucleation site of ferrite phase was carried out for aluminum killed weld metal and titanium killed-steel. It was carried out concerning to acicular ferrite formation in high strength and low alloy steel. The assessment of the pinning effect of alumiunu nitride on the austenite phase at high temperature was also carried out by using LSCM system.
1261
Authors: Ying Li, Wen Juan Gu, Bang Gui He
Abstract: Ink is transferred and sets onto the paper surface in the printing process, which affect printing quality and usage of ink. The objective of this experiment was to investigate the influence of ink type on ink absorption and characterize the penetration depth through quantitative analysis by Laser Scanning Confocal Microscope (LSCM). Fluorescent ink was used to observe and characterize ink penetration by LSCM. Three-dimensional images of ink pigment penetration were obtained by reconstructing all XY plane images. It could be concluded Common offset printing ink compared with UV offset printing resulted in deeper ink penetration ,uneven ink distribution and lower print density. Because the composition and drying method of UV offset printing ink and common offset printing ink were significant different, penetration depth and distribution uniformity of these two types of offset printing ink in coated paper were distinct.
1451
Authors: José M. López-Cepero, J.J. Quispe Cancapa, António Ramirez de Arellano-López, Julian Martínez-Fernández
Abstract: Laser scanning confocal microscopy (LSCM) is a microscopic technique which allows for height discrimination. The ability to gather 3D data, along with adequate resolution (around 400 nm), makes the technique suitable for fractography; however, its applications in this area are not sufficiently explored. In this work, LSCM and SEM are applied to the study of fracture surfaces in sapphire and ruby fibers submitted to tensile stress in high-temperature conditions. The obtained qualitative and quantitative information demonstrates the validity of LSCM as a fractographical technique, allowing for clear identification of fractographical features and providing novel insight in the phenomenon of subcritical crack growth (SCG).
280
Authors: Ying Li, Bei Hai He
Abstract: Cutting is a relative accurate method in the literatures about ink penetration measurement at present. But cutting may bring some damages to paper, which reduces reliability of measurement result. The objective of this experiment was to investigate the influence of coating thickness on ink penetration and characterize the penetration depth through quantitative analysis by Laser Scanning Confocal Microscope (LSCM). Fluorescent ink was used to observe and characterize ink penetration by LSCM. Three-dimensional images of ink pigment penetration were obtained by reconstructing all XY plane images. The results implied that it was reliable and effective method using LSCM to characterize the ink penetration depth and distribution uniformity. It could be concluded that the print quality could be adjusted and improved by increasing the coating thickness.
350
Authors: Ying Li, Wen Juan Gu, Bang Gui He
Abstract: The penetration of ink into the paper affects the final appearance of printing and the amount of ink usage. The main aim of this experiment was to investigate the efficiency of coating speed on surface properties and ink penetration and to characterize the penetration depth through quantitative analysis by laser scanning confocal microscope (LSCM). The results indicated that the surface properties of coated paper could be adjusted and improved by increasing the coating speed. With the increasing of coating speed, ink penetration depth declined and ink penetration uniformity increased. It could be concluded that the coated paper with high coating speed compared with low coating speed resulted in lower ink usage and better printability on the condition of same print density.
432
Authors: Yin Lin Wu, Hai Yan Zhao, Ling Wang
Abstract: Electrochemical sensors based on tubular yttria-stabilized zerconia (YSZ) with the perovskite-type oxide as a sensing-electrode (SE), which is prepared by sol-gel method, were fabricated and examined for NO2 detection in the temperature range 400~700°C. The results show that La0.75Sr0.25Cr0.5Mn0.5O3(LSCM), shows extreme sensitivity to NO2. The EMF varies linearly as a function of the concentration of NO2 (0 ~ 463 ppm) at 500 °C.
109
Authors: Ying Li, Wen Juan Gu, Bang Gui He
Abstract: Binder is the essential component of coating color recipe. The amount and type of latex binder has a significant effect on both the structure and chemical-physical properties of coated paper, which affect critical surface properties, e.g., print gloss, roughness, ink setting rate via liquid absorption, and print mottle The main aim of this study was to investigate the effect of coating solid on the binder distribution in the method of numerical analysis by Laser Scanning Confocal Microscope (LSCM). In this study, Rhodamine B was used to stain the binder and as the probe to characterize z-directional distribution of the binder using LSCM. The results implied that it was reliable and effective method using LSCM to characterize the z-directional distribution of binder and analyze the influence of coating solid on binder distribution in the z-direction. It could be concluded that the coating solid played an important effect on binder distribution in coated paper and low coating solid with more water accelerated binder migration to the interior of base paper, sample with 60% coating solid is good to binder distribution and coating layer forming.
388
Authors: Ying Li, Wen Juan Gu, Bei Hai He
Abstract: The ink penetration behavior depends on the coating surface structure and surface properties of the coating layer in the papermaking process, which include coating recipes and coating conditions, etc. The objective of this experiment was to investigate the relationship between binder content and ink absorption using laser scanning confocal microscope (LSCM). Fluorescent ink was used to observe and characterize ink penetration and distribution in coated paper by LSCM. The results indicated that higher binder content could result in higher amount ink absorption. With the increasing of binder content, ink penetration depth in coated paper increased. Sample G2 with 20 parts binder produced the most unevenness ink distribution. It could be concluded that the coated paper with 25 parts binder compared with the other samples resulted in higher ink usage and better printing quality.
206
Authors: Ying Li, Wen Juan Gu, Bang Gui He
Abstract: The aim of this study was to obtain the effect of drying methods on surface properties and ink penetration. Laser scanning confocal microscope (LSCM) was used in order to characterize the penetration depth through quantitative analysis. Fluorescent ink was used to observe and characterize ink penetration and distribution by LSCM. The results showed that the drying methods had an important role on the surface properties and ink penetration of coated paper. Infrared drying compared with vacuum drying and hot air drying was good to improve the paper properties, which resulted in low roughness, high gloss, low ink absorption and high paper surface efficiency. It could be concluded that infrared drying compared with vacuum drying and hot air drying resulted in the highest print density and better printability.
312
Showing 1 to 10 of 14 Paper Titles