独山子石化腐蚀数据管理评价系统的开发

采用C／S网络数据库方案，开发了独山子大型网络腐蚀数据管理评价系统，数据库收集了油品、冷凝水、旁路釜、电脱盐、在线测厚等各类腐蚀监测数据和设备管线档案等基础数据。系统不仅具有腐蚀监测数据的录入、审核、管理、显示、查询等初级功能，还具有报告自动生成、腐蚀趋势分析、报警、腐蚀原因诊断等高级功能，大大提高了相关职能部门的腐蚀管理能力和决策能力。     

全面腐蚀控制的探讨

完善了“全面腐蚀控制”的定义，首次系统地阐述了“全面腐蚀控制管理”的内容，对腐蚀控制对象在设计、制造、施工、生产运行、检修等环节中腐蚀控制操作规程的具体内容进行了探讨。     

板式升膜蒸发器的腐蚀与改造

针对板式蒸发器腐蚀问题，分析了其形成原因：锅炉蒸汽的品质较低，排出的蒸汽冷凝水显弱酸性；主要是析氢腐蚀，并存在吸氧腐蚀、氧腐蚀、酸腐蚀和磨蚀。提出将板式蒸发器改为列管式蒸发器的措施，并介绍了设计参数的估算方法及安装注意事项。改进后，蒸发器腐蚀问题得到了解决。     

氯化铵外冷器腐蚀分析及防腐蚀涂层保护

联碱生产中氯化铵外冷器列管腐蚀最为严重，腐蚀主要集中于管端。本文作者王敏主要对点蚀、缝隙腐蚀、湍流腐蚀及空泡腐蚀等几种腐蚀类型进行了分析。在此基础上介绍了用环氧-酚醛复合涂层对其进行保护的具体方法，包括列管内外壁、管端、管板的防腐蚀设计和供烤温度的控制等。     

快装锅炉的局部腐蚀探析

通过分析锅炉局部腐蚀的腐蚀机理，指出快装锅炉的锅炉筒后端下部、锅炉筒水位线附近和两侧集箱后端下部是最容易发生局部腐蚀的地方，这些局部腐蚀与锅炉水质、锅炉的结构、运行方式及维护保养等有关，可通过改进设备、提高防腐技术、规范操作和加强锅炉的维护保养等手段来减缓上述部位的局部腐蚀。     

电厂凝汽器管的腐蚀因素的分析及防止措施

从几个方面分析了热电厂凝汽器管的腐蚀因素．并针对腐蚀情况提出采用调整水源、消除应力、造膜保护等几种相应的措施，大大减缓了凝汽器铜管的腐蚀，保证电厂的安全运行．并可获得较好的经济效益。     

硫磺回收装置的腐蚀与防治

分析了硫磺回收装置存在的高温硫化腐蚀、电化学腐蚀等主要腐蚀现象及腐蚀机理，提出了本厂已出现的问题及采取的对策。     

有机TQ506塔腐蚀原因分析

针对TQ506塔较为严重的腐蚀现象，主要从化学腐蚀与电化学腐蚀两方面人手，结合实际生产情况，对硫酸、盐酸、草酸、甲酸以及TQS06塔加料浓度等因素，对钛的腐蚀情况进行了较为详细的分析与探讨，认为TQ506塔加料浓度降低，电极电位差距增大是造成TQ506塔腐蚀的主要原因，并结合实际提出采用牺牲阳极保护办法的对策措施，解决TQ506塔的腐蚀问题。     

高浓度H2S环境下的腐蚀与防腐

分析了干湿Ｈ２Ｓ环境的腐蚀机理与特点，从设备选材、设计制造及使用等方面对减轻Ｈ２Ｓ腐蚀进行了讨论。     

一种高效无公害的复合型缓蚀剂DJ—W的试验研究

本文采用电偶腐蚀方法和失重法研究内燃机冷却水系统的腐蚀问题。采用扫描电镜及俄歇电子能谱等现代化表面分析技术，结合自腐蚀电位和极化曲线测量，研究铸铝、铸铁、焊锡的腐蚀机理和ＤＪ复合缓蚀剂的缓蚀机理。该缓蚀剂蛤有无公害、高效的特点，其缓蚀率高于９０％，可供内燃机冷却水系统如火车、轮船和发电机组等使用。     

Concrete cover cracking with reinforcement corrosion of RC beam during chloride-induced corrosion process

This paper deals with the evolution of the corrosion pattern based on two beams corroded by 14 years (beam B1CL1) and 23 years (beam B2CL1) of conservation in a chloride environment. The experimental results indicate that, at the cracking initiation stage and the first stage of cracking propagation, localized corrosion due to chloride ingress is the predominant corrosion pattern and pitting corrosion is the main factor that influences the cracking process. As corrosion cracking increases, general corrosion develops rapidly and gradually becomes predominant in the second stage of cracking propagation. A comparison between existing models and experimental results illustrates that, although Vidal et al.'s model can better predict the reinforcement corrosion of beam B1CL1 under localized corrosion, it cannot predict the corrosion of beam B2CL1 under general corrosion. Also, Rodriguez's model, derived from the general corrosion due to electrically accelerated corrosion experiments, cannot match natural chloride corrosion irrespective of whether corrosion is localized or general. Thus, for natural general corrosion in the second stage of cracking propagation, a new model based on the parameter of average steel cross-section loss is put forward to predict steel corrosion from corrosion cracking.     

停工状态下转化炉上发夹管腐蚀开裂原因分析

通过对一段转化炉上发夹管受力分析、裂纹特征、断面金相、电镜扫描、微区能谱、材质等分析,找出了上发夹管开裂的原因是应力腐蚀断裂,提出防护措施.     

The corrosion pattern of reinforcement and its influence on serviceability of reinforced concrete members in chloride environment

This paper deals with two corroded reinforcement concrete beams, which have been stored under sustained load in a chloride environment for 14 and 23 years respectively. The evolution of corrosion pattern of reinforcement and its influence on serviceability are studied. In chloride-induced corrosion process, corrosion cracking affects significantly the corrosion pattern. During the corrosion cracking initiation period, only local pitting corrosion occurs. At early stage of cracking propagation, localized pitting corrosion is still predominant as cracks widths are very small and cracks are not interconnected, but a general corrosion slowly develops as the cracks widen. At late cracking stage, interconnected cracking with wide width develops along large parts of the beam leading to a general corrosion pattern. Macrocells and microcells concepts are used for the interpretation of the results.Mechanical experiments and corrosion simulation tests are performed to clarify the influence of this corrosion pattern evolution on the serviceability of the beams (deflection increase). Experimental results show that, when the corrosion is localized (early cracking stage), the steel–concrete bond loss is the main factor affecting the beams serviceability. The local cross-section loss resulting from pitting attack does not significantly influence the deflection of the beam. When corrosion is generalized (late cracking stage), as the steel–concrete bond is already lost, the generalized steel cross-section reduction becomes the main factor affecting the beams serviceability. But, at this stage, the deflection increase is slower due to the low general corrosion rate.     

Effects of non-uniform corrosion on the cracking and service life of reinforced concrete structures

The purpose of this study is to explore the effects of non-uniform corrosion on cracking behavior of concrete cover. The effects of non-uniform corrosion distribution, cover-to-rebar diameter ratio, and concrete compressive strength on the cracking pressure of concrete cover were studied. The present study indicates that the pressures to cause cracking of concrete cover under non-uniform corrosion conditions are much smaller than those under uniform corrosion case. The cracking pressure decreases up to about 60% depending upon the types of non-uniform corrosion distributions. It was also shown that cover-to-rebar diameter ratio and concrete compressive strength affect greatly the cracking pressure of concrete cover. Realistic equations on the cracking pressure of concrete cover were derived. The comparisons of analysis results with the test data on the cracking pressure of concrete cover show fairly good agreement. Finally, the effect of non-uniform corrosion on the service life of concrete structures was discussed.     

不锈钢管在聚酯生产行业中的选用

采用慢应变速率拉伸试验、扫描电镜断口分析以及金相显微组织分析检测等方法对0Cr13Al铁素体不锈钢及2205双相不锈钢在酸性介质中应力腐蚀开裂行为进行了研究。并评定不锈钢管在腐蚀性介质中应力腐蚀开裂的敏感性。为在聚酯生产行业中选择容器用钢提供依据。结果表明,拉伸试样全部断裂在焊缝或热影响区。试样断口形貌呈准解理断裂和韧性断裂。2205双相不锈钢的应力腐蚀敏感性比0Cr13Al铁素体不锈钢低。     

富气循环水冷却器泄漏原因分析

循环水冷却器现状,对循环水冷却器泄漏原因进行分析,提出造成腐蚀穿孔的几种原因,阐述造成腐蚀的原理;结合实际应用,总结泄漏主要原因,针对泄漏原因,提出改善水质、升级材质、提高pH值等措施,尽量避免泄漏的发生.     

壳牌粉煤气化装置合成气中氯化物的危害与控制

分析了壳牌粉煤气化装置合成气中氯化物的来源;简述了氯化物应力腐蚀开裂(ClSCC)产生的条件和机理;从原煤质量、操作控制、材质变更、改造洗涤流程、增设分离器等方面提出了激冷气压缩机控制氯化物腐蚀的应对措施。     

Interkristalline Spannungsrißkorrosion an Hochtemperatur-Winderhitzern. Werkstoffkundliche,fertigungs- und verfahrenstechnische Maßnahmen zur Minderung und Vermeidung der Schäden

Intercrystalline stress corrosion cracking (SCC) in high temperature hot blast stoves. After a brief survey of known cases of stress corrosion cracking and today's protective or repair measures, the results of lab tests are presented which provide new knowledge about the course of nitrate stress corrosion cracking. The lab tests are dynamic stress corrosion cracking tests allowing direct simulation of SCC-attack on structural steels under operational conditions. It thus becomes possible to specifically intervene in the mechanism of SCC. Modifying the factors material, tensile stress, and medium provides a basis for the construction of hot blast stoves not sensitive to SCC.     

应力腐蚀开裂的断裂参量研究

根据焊接接头应力腐蚀开裂行为的特点,采用焊接接头力学不均匀性模拟试样,用断裂力学的 K 因子方法和 COD 方法进行研究。结果表明,焊接接头区域硬化层宽度 h 增加时,应力腐蚀裂纹扩展速率 da/dt 显著增加。     

350万吨/年催化裂化装置腐蚀与防护

分析大连石化公司350万催化裂化装置各部分的腐蚀类型和腐蚀机理,列举了装置发生的典型腐蚀案例,分析腐蚀发生的成因,总结防护和整改措施。阐述各部分腐蚀介质的产生原因,提出了整改措施和改进办法。