The deterioration process of the epoxy phenolic coated tinplate in functional beverage was studied by electrochemical impedance spectroscope (EIS). The surface morphology was characterized SPM and SEM. The results showed that corrosion pits were observed on the surface after exposing the coating system to functional beverage for 364 days. The breakages of the organic coating lead to the corrosion of substrate metal. A new parameterpextracting directly from the Bode plot was presented to characterize the deterioration degree of the coating system. Usingpvalue as the discrimination indicator of the deterioration degree of organic coating was presented in this paper.

This project studies the impact on ‹110› dislocation-free monocrystal grown by Czochralski method (hereinafter referred to as CZ) through puller's heat zone system and pulling process. Adjusting heat system appropriately, increasing pulling speed sharply, controlling the diameter and length in neck growth, controlling the speed in crown growth, increasing the length and diameter of tail, all of which are key elements to guarantee the success of ‹110› dislocation-free monocrystal pulling. The ‹110› dislocation-free monocrystal we developed under this project can be applied to optoelectronic devices for both semiconductor and solar industry. According to the verifications of the customer, the solar cell manufactured by ‹110› silicon monocrystal has unique features of ultra-thin and high efficiency. Furthermore, it can solve the problem caused by sheltering issue. Compared to traditional solar cell, silicon usage is 3 times less. As a result, it reduces the material cost dramatically.

7A60 aluminum alloy was treated under different retrogression time, and the micro-structure, mechanical properties and stress corrosion behaviors were observed and determined by optical microscopy, transmission electron microscopy and slow strain rate tester. The results shown that with the increasing of retrogression time the precipitates within the grains were gradually grown up, and the precipitates along the grain boundaries were changed from small and closely spaced into coarse and widely spaced ones. The elongation and toughness ratio of 7A60 alloy increased obviously with the retrogression time, whereas the tensile strength and hardness of 7A60 alloy decreased. The optimum retrogression time is about 60min, under which 7A60 alloy has a best combination of tensile strength, ductility and stress corrosion resistance.

In this paper, the radial resistivity variation (RRV) of the gas doped floating-zone (GDFZ) silicon has been studied through of three factors that are the lower shaft rotation speed, the timeratio of the lower shaft clockwise(CW) rotation speed and the counterclockwise (CCW) rotation speed, and the eccentricity between the upper shaft and the lower shaft in the horizontal direction. Test results show that the lower shaft speed has greatly influenced the RRV of GDFZ silicon, and with the increase of the shaft speed, radial deviation of the resistivity decreases first and then increases. As the timeratio between the lower shaft of CW&CCW rotation speed increases, the single crystal radial resistivity distribution is improved. As reversible angle of CW&CCW further increasing, radial deviation of the resistivity distribution rises again. With the increases in eccentricity ing, resistivity variation between the edge and the center decreases, thus radial resistivity inhomogeneity of single crystal significantly is also reduced. Based on the above study, further optimization of process, reasonable regulation and control of shaft speed, reversible angle, eccentricity and other parameters selected during GDFZ process can be obtained, which would obtain good radial resistivity uniformity to meet the requirements of the semiconductor devices.

Sepiolite/poly (sodium acrylate-acrylamide) composite was synthesized by using inverse suspending polymerization method under different dispersant content, neutralization degree and ratio of monomer with orthogonal experiments. The surface morphology, structure and humidity controlling properties of composite were observed and determined. The results show that sepiolite/ poly (sodium acrylate-acrylamide) composite is in a fine particle with rough surface. During the polymerization process, acrylate and acrylamide monomer is grafted with hydroxyl on the surface of sepiolite and then intercalated successfully into the silica layers of sepiolite. The impact of three factors on the humidity controlling behavior of composites increases by the order of dispersant content, ratio of monomer and neutralization degree. The optimum preparation parameters are dispersant content of 10%, neutralization degree of 85% and ratio of monomer 2:1.