Advanced Materials Research Vol. 1096

Abstract: Silane film technology is an energy saving and environment-friendly metal surface treatment technology.The best hydrolysis condition of mixed Bis[3-(trimethoxysilyl)propyl]amine(BTSPA) and Vinyltriethoxysilane(VTAS) are studied by orthogonal experiments in this paper.The corrosion resistance of the film formed under optimum conditions in 0.5M NaCl solution was studied by Potentiodynamic polarization curves and electrochemical impedance spectroscopy.The studies show that the optimal hydrolysis conditions: silane content is 8ml, alcohol -water ratio is 80:15, pH value is 4.0, hydrolysis temperature is 25 °C.Silane film formed on cold-rolled steel has good corrosion resistance in 0.5M NaCl solution.

Abstract: Structural and optical properties of MgZnO films were investigated by annealing in oxygen at different pressures. The crystalline quality of the annealed films improves with increasing annealing pressure. After annealing at 3.03×10⁵ Pa, the grain size became larger and oxygen content in the annealed films increased. This was attributed to the recrystallization of the films under high annealing pressure. However, a decreased oxygen content was found by annealing the films at 1.01×10⁵ or 2.05×10^-3 Pa. According to the defect levels and the relationship between photoluminescence spectra and annealing conditions, it was suggested that the emission peak located at 2.270 eV in photoluminescence spectra was related to interstitial oxygen (O_i) which will compensate the donor defects (Zn_i or/and V_O) and lead to the MgZnO film transforming into a p-type conduction under the annealing pressure of 3.03×10⁵ Pa.

Abstract: In this paper, we have prepared the beta-FeSi₂ thin film on Si substrate through the direct current magnetron sputtering technology. We have tested the samples by XRD, optical digital microscope (ODM), spectrophotometer, and SEM. Under the same annealing temperature at 1153 K, the annealing time has important influence on the optical characteristic of beta-FeSi₂ thin film. More the thickness of the beta-FeSi₂ thin film is thinner, and more the absorptivity of photo is higher. We should use the thinner beta-FeSi₂ thin film with appropriate value of the thickness and must adopt the anti-reflection layer to fabricate the solar cell.

Abstract: Gravure inks are frequently applied in multiple layers as prints on packaging materials. The mechanical load exerted on to the combination of the coatings of gravure ink and the package base due to loading, unloading and transportation may develop stresses. The colored inks generally used onto package for printing are white, yellow, magenta, cyan and black consecutively. The primary purpose of the ink layer is visualization of product information and the secondary purpose is to protect the product from change in ambient conditions. These ink coatings are not long-lasting. If the system is not properly designed, these may lead to failure of the coating layers due to mechanical stress. In the present investigation, mechanical properties of free films of different colored inks are measured individually to design proper ink layers on the package. The measured mechanical properties are modulus of elasticity and poisson’s ratio. The mechanical strains developed in the coating layers are also determined by using finite element method. The numerical results are compared with the experimental findings. The main objective of the investigation is to provide better protection of the packaged product leading extended shelf-life of the product.

Abstract: Zn-Sb based composite thin films have been prepared by radio frequency magnetron sputtering using a Zn₄Sb₃ compound target followed by thermal annealing. Sample structure and surface morphology were analyzed by X-ray diffraction (XRD) and atomic force microscopy (AFM). The electrical properties of the films were studied by Hall measurements. The X-ray diffraction patterns reveal that the intensity of diffraction peak of ZnSb phase is enhanced as temperature increasing. Results of AFM shows the rms roughness is getting big with increasing temperature due to the growing crystal grains. Hall measurements indicate that the Zn-Sb composite thin films annealed at different temperatures are p-type conducting with carrier concentrations being on the order of 10¹⁹ cm^-3.

Abstract: Poly (vinyl alcohol) (PVA) was used as the sole carbon source in the medium to isolate PVA-degrading fungi from an activated sludge which obtained from water-soluble PVA packaging film factory. The PVA-degrading fungi were screened after transparent circle experiment and were preliminary identified through morphology and optical microscope observations. The qualitative and quantitative researches of the effect of additives on PVA degradability were investigated by transparent circle experiment and UV spectrophotometry, respectively. The results showed that the degradation effect of the XP-02 was the best in ten PVA-degrading strain and was preliminary identified as penicillium. When the concentration of additives was 0.05 g/L, the biodegradation rate of PVA was increased with the addition of plasticizer (polyethylene glycol) (PEG), surface active agent (sodium dodecyl benzene sulfonate) (SDBS) and emulsifying agent (tween-80 or triton X-100) by 5.01%, 8.67% and 11.21%, respectively, which indicates that the additives in the PVA packaging film can increase the degradable effect. However, the optimum proportion of these additives in the PVA film to obtain the best degradability for the film is deserves the further investigation.

Abstract: Kroy-processed and original wool fabric were successfully modified by TiO₂/SiO₂ 70:30 sol with the stabilization of 60g/L 1,2,3,4-butanetetracarboxylic acid (BTCA). In order to explore the influence of Kroy-process on TiO₂/SiO₂ sol treatment, self-cleaning property of original and Kroy-processed wool samples coated with TiO₂/SiO₂ sol were investigated by a Color Measuring & Matching System. In addition, the contact angles of four kinds of wool fabric (original wool, Kroy-processed wool, TiO₂/SiO₂ coated original wool and TiO₂/SiO₂ coated Kroy-processed wool) were respectively evaluated to achieve the effect of Kroy-process on the hydrophilicity of wool fabric. The results revealed that the applying of Kroy-process is conducive to the coating of TiO₂/SiO₂ sols on wool fabric. The total color difference ∆E of coated wool increased 42% from 30.35 to 43.09 after the application of Kroy-process. Besides, the hydrophilicity of wool fabric was enhanced since the contact angle of Kroy-processed wool decreased to 133.5° while original wool was 140.3°. Furthermore, coated samples with Kroy-process had lower value of contact angle as compared with coated original wool fabric.

Abstract: Oxide thin films such as aluminum oxide doped with zinc (AZO), and aluminum oxide (Al₂O₃) were prepared in the pores of microchannel plate (MCP) by atomic layer deposition (ALD), which is a precise control thin film thickness on substrate with high aspect ratio structure. In this paper, homogenous oxide thin films deposited on varied substrates were prepared by ALD technology under different conditions, and the morphology, element distribution and structure of deposited samples are systematically investigated by scanning electron microscopy (SEM), energy dispersive x-ray (EDX), and x-ray diffraction (XRD) respectively, The results show that ALD technique is a good method to grow homogenous thin films on MCP.

Abstract: Mie scattering theory is used in this paper to analyze the forward scattered light intensity distribution of an air bubble in the subsurface of optical glass, shining by a monochrome laser with a wavelength of 632.8um. The scattering process can be classified as uncorrelated single scattering .according to the properties of optical media. The finite difference time domain (FDTD) software is used to establish a 3-d simulation model to calculate for forward scattered intensity distribution of different sized air bubbles. Moreover, according to the relationship between Mie scattering intensity pattern and the size of bubbles, the size of bubbles are figured out with the help of neural network algorithm. The errors are lower than 10%. The simulation results can improve the precision of defects detection in optical glass.

Abstract: It is very important to effectively evaluate the adhesion strength of coating. A nondestructive method to evaluate the adhesion strength of laser induction hybrid rapid cladding Cu-Fe-based coatings was investigated. The electron work function of coatings was measured by scanning Kelvin probe. It was demonstrated that the Fe-rich particles and solid solution of Fe can increase the EWF and the tensile strength. A logarithmic relationship between the ratio of EWF to dilution and the adhesion strength was established.