查询词典 corrosion rim

Using metallographic analysis, original structure and surface deficiency were obtained, the influence of the structure on corrosion speed was settled, the surface macrography patterns of welded joint in different temperature and concentration were got. Microscopic patterns after corrosion in different condition were gained by SEM, though which the influence of temperature, concentration and structure on corrosion was easily observed.

采用金相分析法，不仅获得了腐蚀前焊接接头的原始金相组织以及表面缺陷，确定了组织及缺陷对腐蚀速率的影响，而且得到了焊接接头在不同温度、浓度条件下腐蚀后的宏观形貌，采用场发射扫描电子显微镜得到了焊接接头在不同条件下腐蚀后的微观形貌，从而直观地得到了温度、浓度以及组织对焊接接头腐蚀速率的影响。

When Ts is 850 ℃,grains are fined and the size of βphase and the distance betweenβphase pasticles are small.The corrosion barrier effect ofβ phase onαphase is enhanced and the iron content does not increase much at this temperature.So the corrosion resistance is improved.The corrosion resistance of AZ70 alloy falls off when Ts is 890 ℃,which attributes to the presence of microporosity,hot cracking and increase of iron content.

过热温度为810 ℃时，热速处理对合金耐腐蚀性能的改善作用并不大；过热温度为850 ℃时，热速处理显著细化了合金晶粒，β相的尺寸和间距变小，β相对α相腐蚀的阻碍作用增加，而且合金中的铁含量并没有提高，从而改善了合金在试验条件下的耐腐蚀性能；过热温度为890 ℃时，组织中存在热裂纹和显微疏松缺陷，合金含铁量显著增高，合金的耐腐蚀性能下降。

It is common that reinforced concrete bridges are damaged with steel corrosion which not only reduces the strength of structures but also changes their failure mode if there exists nonsymmetry corrosion developed to some extent. Nonsymmetry corrosion can translate ductile fracture into brittle failure and translate flexural failure into torque failure, etc.

前言钢筋锈蚀是钢筋混凝土桥梁结构中最常见的一种损伤形式，钢筋锈蚀不仅削弱钢筋有效面积，而且能够引起钢筋体积膨胀，使混凝土保护层开裂，为腐蚀介质提供更加便易的入侵渠道，从而加速结构损伤，导致结构提前破坏。

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By confecting simulation corrosion solution of pressuring air cooler system of Maoming Petrification and using CMB-1510B portable instantaneous corrosion rate meter, the experimental inhibition efficiency of organic corrosion inhibitor of Na2S and its compound was evaluated.

在实验室模拟茂名石化加压空冷器系统的腐蚀溶液，运用CMB-1510B便携式瞬时腐蚀速度测量仪评价了多硫化钠复合缓蚀剂的缓蚀性能。

Production and operation of spiral steel pipe (spiral welded steel pipes, spiral welded pipe, Cangzhou spiral pipe, spiral pipe, spiral wound steel tube), seamless steel pipe, straight seam steel pipes, hot-rolled steel pipes, hot expanded steel pipe, welded steel pipe, galvanized steel pipe, galvanized pipe, pipe stress, anti-corrosion steel pipe, pipe insulation oil and gas 2PE/3PE polyethylene coating, FBE pipe anti-corrosion epoxy powder dissolved, epoxy coal tar pitch as if paint, pipe cement mortar lining anti-corrosion, black yellow jacket pipe insulation, flanges, elbows, big bend, three links, the size of a top tube.

生产经营螺旋钢管（螺旋缝焊接钢管、螺旋焊管、沧州螺旋钢管、螺旋管、螺旋缠绕钢管）、无缝钢管、直缝钢管、热轧钢管、热扩钢管、焊接钢管、镀锌钢管、镀锌管、压力钢管、防腐钢管、保温钢管（石油天然气2PE/3PE聚乙烯防腐层、FBE溶解环氧粉末钢管防腐、环氧煤沥青仿佛涂料、钢管水泥沙浆衬里防腐、黑黄夹克保温钢管、法兰、弯头、大弯、三通、大小头等管件。

The results showed that two kind of SRB both shitted corrosion potentials to become much positive,but the variation of corrosion potentials caused by two kinds of SRB is different obviously,and thereby the difference of effect on corrosion was produced.

本文选取两艘不同地区船舶舱底污水中的SRB，研究了两种不同形态的硫酸盐还原菌对腐蚀的影响。1实验方法菌种来源。

The property of no film, micro-arc oxidation film and chromate film influenced the corrosion of joint samples which was analyzed in same corrosive conditions by calculate the corrosion effects and observe macro-photograph micro-photograph. The corrosive regularity influenced by corrosive condition factors and the corrosion resistance of different thickness of micro-arc oxidation film also be compared.

采用减重法计算连接腐蚀效应并观察试样表面的腐蚀宏观及微观形貌，对比分析了无表面处理、铬化处理及微弧氧化处理在相同盐雾腐蚀条件下对减小镁合金-钢连接腐蚀作用的差异性以及盐雾腐蚀条件参数对镁合金-钢连接腐蚀的影响规律。

The effect of scandium addition on microstructure and corrosion properties of Al-5.3Cu-0.8Mg-0.6Ag-0.2Zr alloy was investigated using optical microscope, scanning electron microscope, transmission electron microscope, intergranular corrosion and exfoliation corrosion.

通过金相显微镜、扫描电镜、透射电镜、晶间腐蚀及剥落腐蚀等实验方法，研究钪对Al-5.3Cu-0.8Mg-0.6Ag合金的组织和腐蚀性能影响。

The X-ray diffraction results of corrosion products and scanning electron microscopy analysis of corrosion surface were used to comparatively investigate the corrosion properties of Zn/Al coatings, and to study the self-sealing mechanism.

研究表明，与纯锌、纯铝涂层相比，对于钢基体，锌铝复合涂层具有更加合适的阴极保护电位，可以大大提高防护寿命；海水环境中涂层表面会形成一层致密稳定的腐蚀产物膜，能有效阻止腐蚀介质向涂层内部的渗透，涂层会保持在一个较低的腐蚀速度。

Those who loved reading were obliged to send for their books from England; the members of the junto had each a few

那些喜欢看书的人就得从英国购书，讲读俱乐部的的成员每人都有几本。

Three fourths of the earth's surface is covered with water.

地球表面的四分之三被水覆盖着。