耐火纤维喷涂技术的优越性及应用

详细介绍了耐火纤维喷涂技术及施工等各方面的优越性。同时说明耐火纤维喷涂技术,在大庆石化公司炼油厂润滑油白土装置扩建改造中加热炉炉衬上的应用及取得的明显节能效果。     

Effect of Thickness on the Structure and Tribological Properties of MoSx Coating

MoSx coatings were prepared by bipolar-pulse DC unbalanced magnetron-sputtering system with the variation of coating thickness at different Ar pressures.The composition and surface morphology were determined by using energy dispersive X-ray and scanning electron microscopy;the structural characterization was analyzed by X-ray diffraction.The friction and wear properties were investigated by fretting tests in air with less than 10% and 50% relative humidity.At 0.40 Pa pressure,(002) basal plane orientation was formed throughout the coatings.At 0.88 Pa and 1.60 Pa pressures,(002) basal plane orientation was only noticed in the first stage of coating growth(around 0.20 μm in thickness), and then edge orientations with their basal planes perpendicular to the surface would be evolved in the coatings.Humidity has a minor influence on the coatings that have(002) basal plane orientation,whereas the tribological properties of MoSx coatings with edge orientations are greatly affected by humidity.The mechanisms of coating growth and friction and wear processes are discussed.     

关于彩涂压型钢板构件设计中的选材问题

近年来 ,在彩涂压型钢板构件设计应用中 ,由于不重视、不了解如何合理选材 ,在实际工程的材料订货中也都不提出对材料性能的技术要求 ,致使供货材质、材性不能满足使用要求 ,存在降低彩板构件承载力或减少其使用寿命的隐患 ,应引起设计人员的注意。同时对当前如何按使用条件及材料供应条件合理地选定彩板材料的性能技术要求 ,包括基板钢材的级别及力学性能、板厚及公差控制要求、镀锌层质量与彩涂层类别以及参照的技术标准等 ,提出了一些建议 ,供设计应用参考。最后还对板的强度、厚度以及镀铝锌板的选用问题进行了讨论     

化工防腐蚀涂料应用情况介绍

介绍了氯磺化聚乙烯涂料、改性聚苯乙烯涂料、环氧树脂类涂料、水冷器涂料、抗静电涂料等涂料的性能、用途和在洞庭氮肥厂的使用情况.同时对几种涂料施工方案进行了比较.     

T8钢—聚有机硅氧烷仿生减粘降阻复合涂层的特性

研究了Ｔ８钢－聚有机硅氧烷仿生减粘降阻复合涂层的表面润湿性，磨料磨损性及土壤的减粘降组性能，与金属材料相比，仿生复合涂层的表面憎水性显著提高，水在其表面上的接触角达９２°；与４５钢相比，其磨料磨损的体积相对耐磨系数为６３％，降阻率达１５．２２％－－２２．２７％。     

水冷热模法离心铸造大口径球铁管用管模涂料

阐述水冷热模法管模涂料的组成。说明了耐火基料，悬浮剂、粘结剂，减水剂的各自作用机理，提出了合理的涂料配方、合适的喷涂方式。     

胜利油田污水储罐腐蚀防护方法评价

对胜利油田纯粱采油厂A3钢制生产污水（水温约60℃）储罐使用寿命过低的原因进行了实验考察。水质分析数据表明氯离子浓度高（45-48gm）是污水腐蚀性强的主要因素。A3钢在60℃污水中的腐蚀速率，由极化曲线数据计算的值大大高于失重法测定值，敞开系统中失重法测定值又高于密闭系统中测定值，挂片上出现蚀孔，说明储罐中A3钢发生了氧存在下氟离子引起的局部腐蚀（孔蚀）。元素分析结果表明．储罐阴极保护所用的牺牲阳极铝材含铁等元素量超标。牺牲阳极密封不良，在实验污水中7天后电流效率仅为2．92％，失去阴极保护能力。处于实验污水环境中的有涂层保护的A3钢．14天后出现腐蚀极化电流，表明涂层已失去完整性。要提高该采油厂及胜利油田其他采油厂污水储罐的使用寿命，必须改用合格的牺牲阳极和保护涂层材料。图3表2参7。     

高强度钢的Zn—Ti合金新镀层

本文研究了一种Ｚｎ－Ｔｉ合金新镀层，经盐水浸泡、中性盐雾和大气暴露试验结果试验，其耐蚀明显超过镀Ｚｎ层，并与镀Ｃｄ层相近，用缺口持久拉伸试验检验氢脆性，拉伸持续时间超过２００ｈ，达到原航空部部颁标准（ＨＢ５０６７－８５），该镀层适用于高强度钢防护。     

Surface tailoring of an ethylene propylene diene elastomeric terpolymer via plasma‐polymerized coating of tetramethyldisiloxane

In the research presented here, we explore the use of a low‐energy plasma to deposit thin silicone polymer films using tetramethyldisiloxane (TMDSO) (H(CH₃)₂? Si? O? Si? (CH₃)₂H) on the surface of an ethylene propylene diene elastomeric terpolymer (EPDM) in order to enhance the surface hydrophobicity, lower the surface energy and improve the degradation/wear characteristics. The processing conditions were varied over a wide range of treatment times and discharge powers to control the physical characteristics, thickness, morphology and chemical structure of the plasma polymer films. Scanning electron microscopy (SEM) shows that pore‐free homogeneous plasma polymer thin films of granular microstructure composed of small grains are formed and that the morphology of the granular structure depends on the plasma processing conditions, such as plasma power and time of deposition. The thicknesses of the coatings were determined using SEM, which confirmed that the thicknesses of the deposited plasma‐polymer films could be precisely controlled by the plasma parameters. The kinetics of plasma‐polymer film deposition were also evaluated. Contact angle measurements of different solvent droplets on the coatings were used to calculate the surface energies of the coatings. These coatings appeared to be hydrophobic and had low surface energies. X‐ray photoelectron spectroscopy (XPS) and photoacoustic Fourier‐transform infrared (PA‐FT‐IR) spectroscopy were used to investigate the detailed chemical structures of the deposited films. The optimum plasma processing conditions to achieve the desired thin plasma polymer coatings are discussed in the light of the chemistry that takes place at the interfaces. Copyright © 2004 Society of Chemical Industry     

Effects of Substrate Temperatures on the Structure and UV-shielding Properties of TiO_2-CeO_2 Films Deposited on Glass by Radio-frequency Magnetron Sputtering

1Introduction Theultravioletrays(UV)insunlight(-4%)cantransmitintoroomthroughcommonfloatglass,theUVcanmakethematerialsintheroom,eg,paper,furni ture,textilefabricandplastics,becoloredanddeterio rated.ShieldingfromUVirradiationisofinterestinmanyfields.Formu…