货油舱用耐蚀E36钢板的研发与工业试制

采用低碳及耐蚀微合金化设计思路,并结合控轧控冷工艺,成功开展了6mm和30mm两种规格的货油舱内底板用耐蚀E36钢板的工业试制.结果表明,工业试制钢板组织均匀、冶金质量控制良好,在成分及力学性能满足E36钢标准的基础上,耐酸性氯离子环境腐蚀速率低至0.62mm/a左右,较国际海事组织在《原油油船货油舱用耐蚀钢性能标准》中提出的1mm/a的腐蚀速率要求低了约40%,其耐蚀性能约是传统E36钢的5倍.     

高温耐蚀Ti－31钛合金的性能及工程应用

报导了Ｔｉ－３１钛合金的力学性能、高温热稳定性和在高温高压水中的耐腐蚀及抗脆性破坏性能．试验结果表明，Ｔｉ－－３１合金具有良好的综合机械性能，在高温高压ＬｉＯＨ溶液中吸氢少，抗脆性能好，可在３５０℃的环境长期使用；该合金还具有良好的焊接性和工艺性能，可制造各种板、棒、管、饼及零部件，是某些动力装置理想的候选材料。     

Superhydrophobic coatings for aluminium surfaces synthesized by chemical etching process

In this paper, the superhydrophobic coatings on aluminium surfaces were prepared by two-step (chemical etching followed by coating) and one-step (chemical etching and coating in a single step) processes using potassium hydroxide and lauric acid. Besides, surface immersion time in solutions was varied in both processes. Wettability and surface morphologies of treated aluminium surfaces were characterized using contact angle measurement technique and scanning electron microscopy, respectively. Microstructures are formed on the treated aluminium surfaces which lead to increase in contact angle of the surface (>150°). Also on increasing immersion time, contact angle further increases due to increase in size and depth of microstructures. Additionally, these superhydrophobic coatings show excellent self-cleaning and corrosion-resistant behavior. Water jet impact, floatation on water surface, and low temperature condensation tests assert the excellent water-repellent nature of coatings. Further, coatings are to be found mechanically, thermally, and ultraviolet stable. Along with, these coatings are found to be excellent regeneration ability as verified experimentally. Although aforesaid both processes generate durable and regenerable superhydrophobic aluminium surfaces with excellent self-cleaning, corrosion-resistant, and water-repellent characteristics, but one-step process is proved more efficient and less time consuming than two-step process and promises to produce superhydrophobic coatings for industrial applications.     

北京工体“海底世界”工程设计

北京工体“海底世界”工程是一座大型的海洋生物展览馆,工程位于人工湖中央,且埋在湖底,出入口设置在岸上,通过小桥将出入口与“海底世界”工程连接,观众可以通过地面上的主入口,经过小桥随通道乘自动扶梯进入“海底世界”,到达湖底。进入海族馆后,再通过环状传送皮带和自由走道观赏千余种海洋鱼类生物,使人仿佛感到身临其境,尽情地享受漫游海底的感觉。与国内外许多海族馆相比所不同的是,北京工体“海底世界”整个工程全部位于地下,且在人工湖的水面以下,深度达１１ｍ,另外海族馆内的盐水对钢筋混凝土结构还有锈蚀作用。因此,在工程设计中,有许多特殊的地方,如抗渗、抗浮、防腐等等。     

电子设备结构防腐设计中的材料应用

介绍了金属和非金属材料的腐蚀机理和环境对其的影响,分析了不同材料耐蚀特性的差异,最终详细阐述了电子设备的结构设计中耐蚀材料的选择原则。     

紧固件防护涂层的制备及耐蚀性能研究

阐述了水性含氟涂层和水性纳米铝粉环氧涂层的配方及固化工艺研究,制备用于紧固件腐蚀防护的水性有机涂层。使用DSC对涂层的工艺进行了优化,使用SEM对涂层表面形貌进行了表征。利用电化学阻抗谱(EIS)对两种涂层的耐腐蚀性能进行了研究,结果表明:制备出的含氟涂层致密孔隙少,耐腐蚀性能明显优于水性纳米复合涂层。     

Modification with metals: an efficient method of improving wear resistance of phenol carboplastic pcp in friction with “viscous” corrosion-resistant steels

We study the effects of modification with metal powders on the triboengineering characteristics of carboplastic PCP under friction with “viscous” corrosion-resistant steel. It is shown that B83 habbitt is the best modifier among those studied because its application simultaneously reduces the wear rate of the carboplastic and steel and the friction coefficient of the couple. From the standpoint of improving the wear resistance of the couple, modification with nickel is most effective. The positive effect of modification with metals is that metals can effectively heal surface defects and smooth the surface relief of the counterbodies, thus reducing the wear rate and friction coefficient. In carboplastics modified with metals, the most dangerous wear mechanism (ploughing) does not occur.     

输电线路桩基础的抗腐蚀性混凝土配方及寿命预测

研发了适用于西北盐渍地区特殊地质水文环境下输电塔的耐腐蚀桩基础混凝土配方。该配方除了添加高性能减水剂外,还双掺了50%的粉煤灰和炉渣粉。对混凝土的抗硫酸盐腐蚀、抗硫酸盐-氯盐复合腐蚀、抗氯离子渗透和抗冻融性能进行了试验,并对该耐腐蚀性混凝土的使用寿命进行了预测。试验结果和寿命预测均表明,采用了该配方混凝土的输电线路桩基础具有很好的耐久性,并能满足预期的设计寿命要求,适于同类工程借鉴。     

关于露点腐蚀及用钢的综述（二）

在回顾了人们对露点腐蚀认识过程的基础上,进一步论述了露点腐蚀的机理并对防腐蚀用材进行了归纳和展望。     

静磁场对32CrMnNbV淬透性及耐蚀性能的影响

研究了静磁场（０－１．２Ｔ）对３２ＣｒＭｎＮｂＶ淬透性及蚀性能的影响。实验中发现,在连续冷却过程中加磁场,可以使铁索为的ＣＣＴ曲线左移,淬透性下降;在奥氏体化咖磁场。会降低奥氏体的稳定性,造成冷却过程中ＣＣＴ曲线的左移,而且左移的趋势更明显,当淬火时所加磁场的强度增加到１．２Ｔ,马氏体组织明显细化。此外,磁场下淬火可以提高马氏体的蚀性。随着外磁场的增加,腐蚀速率下降。