一种多晶铁纤维的表面改性方法

介绍了一种对多晶铁纤维表面进行改性的方法.从磁学物理的角度出发,并结合大量实验结果,确定了具体的实施方案.结果表明处理后的纤维表面电阻率得到显著提高,磁性能也得到一定改进.     

Corrosion resistance of phosphate coatings obtained by cathodic electrochemical treatment: Role of anode–graphite versus steel

The formation of phosphate coatings by cathodic electrochemical treatment using graphite and steel anodes and evaluation of their corrosion resistance is addressed in this paper. The type of anode used, graphite/steel, has an obvious influence on the composition of the coating, resulting in zinc–zinc phosphate composite coating with graphite anode and zinc–iron alloy–zinc phosphate–zinc–iron phosphate composite coating with steel anode. The corrosion resistance of the coating is found to be a function of the composition of the coating. The deposition of zinc/zinc–iron alloy along with the zinc phosphate/zinc and zinc–iron phosphate using graphite/steel anodes has caused a cathodic shift in the E_corr compared to uncoated mild steel substrates. The i_corr values of these coatings is very high. EIS studies reveal that zinc/zinc–iron alloy dissolution is the predominant reaction during the initial stages of immersion. Subsequently, the formation of zinc and iron corrosion products imparts resistance to the charge transfer process and increases the corrosion resistance with increase in immersion time. The corrosion products formed might consist of oxides and hydroxychlorides of zinc and iron. The study suggests that cathodic electrochemical treatment could be effectively utilized to impart the desirable characteristics of the coating by choosing appropriate anode materials, bath composition and operating conditions.     

磷化促进剂

介绍了磷化促进剂的分类,以及不同种类促进剂对磷化的影响和各自的作用原理.     

环保型刷涂磷化粉在集合式电容器外壳上的应用

为了提高大体积的集合式电容器外壳的表面处理质量 ,降低劳动强度 ,改善工作环境 ,在场地所限的情况下 ,对环保型刷涂磷化粉进行了相关试验 ,得到了除油除锈磷化钝化效果理想的膜层 ,该膜层对绝缘油的相容性好 ,自然通风条件下的耐蚀性佳 ,与漆膜的附着力达到一级。     

磷系产品在金属表面处理的应用和发展前景

概括地介绍了金属表面处理的概念、分类和反应机理．并以水基锌系磷化液为例叙述了钢丝磷，化拉拔工艺技术；指出了金属表面处理的核心问题是金属的防腐和改进产品性能．金属表面处理剂今后的开发系列．     

锌系磷化粉液快速成本计算方法

采用快速直观的计算方法，对锌系磷化粉、液进行成本核算，方便了对磷化制剂的选择与使用。     

DN<100外镀锌内涂塑螺纹管件机械加工工艺

针对市场上给水螺纹管件存在的问题,我们在外镀锌内涂塑可锻铸铁管件的塑粉涂料和机械加工工艺方面做了较大改进,较好地解决了小于DN100热镀锌内涂塑钢管的接口螺纹连接涂塑膜质量问题,保证了管件的防蚀和密封性能,使涂塑管路全程性能得到保证,整体管路和高层建筑同寿命,免维修。     

Formation and characteristics of zinc phosphate coatings obtained by electrochemical treatment: Cathodic vs. anodic

Electrochemical treatment and galvanic coupling are some of the possible modes of acceleration of low temperature phosphating process. The cathodic and anodic treatments during phosphating influence the deposition mechanism, characteristic properties and the corrosion resistance of the resultant coatings in a different way. The present paper aims to compare these aspects and to identify the possible applications of phosphate coatings obtained by these treatments.     

镀锌钢板磷化工艺的研究

研究出一种应用于镀锌钢板的磷化工艺，对磷化液中各组分的作用进行了分析，讨论了酸度及磷化前的表面调整对磷化膜性能的影响。     

一种简便实用的钢铁防锈擦涂磷化液的研制

为了对机电设备及零部件的局部磷化,研制了一种用擦涂方法进行磷化的磷化液,分析讨论了复合促进剂对磷化成膜速度和磷化膜性能的影响.该磷化液游离酸度稳定、常温下操作、工艺简单.磷化膜层致密耐蚀且厚度均匀、可调,外观呈银白或银灰色.可用作耐磨、耐蚀膜层,也可用作有机涂层的基底.