5种农作物锈病孢子的扫描电镜观察

应用扫描电子显微镜观察小麦叶、蒜叶、蚕豆叶、玉米叶和葱叶上的锈病孢子形态特征,观察指标包括孢子的形状、孢子的表面特征以及孢壁纹饰等。结果表明孢子形状各异但以不规则椭圆状为多,孢子表面均具有刺和芽孔,孢壁呈光滑状、浅波状、皱波状和颗粒状纹饰。不同的孢子在形态上呈现一定的差异,通过形态的差异可以区分不同的孢子,为锈病病原体鉴别提供一定的依据。     

锅炉的停备用保护与停用缓蚀剂的选择

锅炉机组停备用时间的增长,将大大增加机组的腐蚀程度,对机组的寿命及安全运行造成严重影响。主要介绍了锅炉停备用期保护的常用方法,并对停用缓蚀剂的选择及特性进行了详述。     

Study on the Corrosion Resistance of Multiphase TRIP Steels

Multiphase TRIP (Transformation Induced Plasticity) steels are known to combine higher strength with higher ductility.In this paper,the corrosion resistance of this steel has been has been investigated by accelerated corrosion tests,such as wet/dry cyclic corrosion and the weight loss in laboratory.The morphologies of their rust layers were observed by using scanning electron microscopy,and the corrosion performance of these steels was discussed by analyzing the protective mechanism.The results show that the corrosion rate of steel A is significantly greater than that of steels B and C in wet/dry cyclic corrosion and weight loss tests.The corrosion performance of conventional C-Mn-Si TRIP steel is deteriorated in both NaHSO 3 and 3.5 wt.% NaCl aqueous solutions.And superior corrosion performance is exhibited for TRIP steel with low alloying contents due to its high thermodynamic stability.The enhancement of corrosion performance of TRIP steel is attributed to the additions of alloying elements,such as Al,Cu,Cr,Mo,Ni,etc.The alloying elements increase the compactness of rust layers,so electrochemical characteristic of TRIP steel is improved.     

凝汽器锈蚀问题的分析和处理

介绍了某1000 MW级核电站凝汽器安装完成进行海水循环冲洗后,水侧钛管与管板焊缝上所发现的锈蚀现象,分析了锈蚀产物的来源和产生这个问题的胀管和焊管原因,阐述了避免出现类似问题的处理方法,对今后凝汽器制造避免此类问题提出了预防措施和建议方案.     

商用车生产过程中的除锈及防锈技术

商用车的铁基零部件在加工、存储过程中的防锈与除锈工作是个系统工程,影响因素较多,根据不同状况可采取的除锈及手段也各不同。针对这些问题阐述了几个主要的影响因素,以及在实际的生产过程中应注意的问题,有针对性地给出了除锈的手段及防锈所采用的工艺及要求。     

黄铜药筒表面防锈ATA自组装膜实验研究

黄铜药筒长期储存过程中表面易发生锈蚀,严重影响了弹药的正常使用.ATA具有很强的螫和性,是一种有效的环境友好型金属缓蚀剂,在黄铜药筒表面包覆ATA自组装膜对缓解药筒锈蚀具有一定的可行性.笔者通过试验在黄铜药筒表面包覆ATA自组装膜,采用EDS能谱分析,电位-时间曲线对对药筒表面覆膜情况进行了分析,通过失重实验初步研究了...     

A Study on the Water-separation Property of Marine Lubricating Oil With a Rust Inhibitor

The rust inhibitor is a kind of oil-soluble surfactant. The excess rust inhibitor in marine lubricating oil will make the water-separation property worse. The determination method for water-separation property of marine oil was introduced, the effect of rust inhibitor C on water-separation property of marine oil was studied, and the demulsifier was screened to improve the water-separation property of marine oil. The experimental results show the content change of rust inhibitor C influences the water-separation property of marine oil. Demulsifier G raises water-separation property of both base oil containing rust inhibitor C and marine oil.     

浅析硬膜快干防锈涂料的生产与应用

浅析硬膜快干防锈涂料的特点、组成、性能、应用及发展。     

首钢Q420qENH高性能耐候桥梁钢板的开发

针对传统桥梁钢板强度低,冲击韧性、焊接性能、耐蚀性能差的问题,首钢公司采用低碳成分设计、添加Ni、Cr、Cu耐候元素以及Mo、Nb元素,并优化了轧制和水冷工艺,开发出具有强韧性匹配和良好耐候性的Q420qENH耐候桥梁钢板。对Q420q ENH钢板的显微组织、力学性能进行了检测,同时采用周期浸润加速腐蚀试验对Q420qENH耐候桥梁钢板和Q420qE普通桥梁钢板的腐蚀失重和腐蚀速率进行了对比分析,研究了Q420qENH钢板的锈层形貌及成分。结果表明:Q420qENH耐候桥梁钢板组织为细小的M-A岛粒状贝氏体、准多边形铁素体和针状铁素体的混合组织,具有高强度、低屈强比和良好的低温韧性;其表面生成结构致密的α-FeOOH锈层,能够阻止钢板被进一步腐蚀,因此相同条件下其耐大气腐蚀性能是Q420qE普通桥梁钢板的2倍以上。     

复合型阻锈剂对混凝土中钢筋腐蚀性影响的电化学研究

应用4×4阵列丝束电极模拟研究了混凝土中钢筋的腐蚀。将混凝土试样浸泡在3％的NaCl溶液中,通过测量铁丝柬电极的自腐蚀电位,研究加入不同阻锈剂（NaNO2;NaNO2＋NaECO3;NaNO2＋苯胺）后对混凝土中钢筋腐蚀性的影响。实验结果表明：复合型阻锈剂（NaNO2＋苯胺）对混凝土中钢筋的防腐效果最好。它不仅可以保护混凝土不受外界腐蚀性介质的影响,还能使钢筋在混凝土中处于良好的钝化状态,从而延长了钢筋混凝土的使用寿命。