查询词典 corrosion

Results indicated that the corrosion belonged in cathodic oxygen depolarization corrosion ,just like that of carbon steel-stainless steel couple .

结果表明，该腐蚀属阴极氧去极化型腐蚀，与不锈钢-碳钢短路体系的腐蚀行为非常相似。

So, in order to settle the problem, a kind of process to acquire compare thick passivating film, high corrosion resisting WX-3TC trivalent chromium blue white desensitizer and its means were successful obtained. The white rust appears after 240h in salt spray test, thus the poor corrosion resistance of blue white passivating film can be settled.

为此，在增加蓝白色钝化膜的厚度方面进行了努力，终于研制成功了一种能获得较厚、具有高耐蚀性钝化膜的WX-3TC三价铬蓝白色钝化剂及其钝化工艺，盐雾试验出现白锈的时间可达240h以上，从而解决了蓝白色钝化膜耐腐蚀性差的难题。

In this paper, the dezincification corrosion resistance of Mg-Sb brass was investigated by the methods of dezincification corrosion depth testing, optical microscope, SEM and XRD.

采用脱锌腐蚀深度测量方法、光学显微镜、SEM和XRD等分析方法，研究了镁锑黄铜的脱锌腐蚀性能和添加少量Sn、Al元素对其耐腐蚀性能的影响。

Based on the original production process, the developed corrosion inhibitor used for polyurethane foaming changes the pH of dialyzate, which is produced from submerging polyurethane foam to water, from acidity into faint alkalinity, so as to inhibit or retard corrosion of the pipeline.

研制成的聚氨酯泡沫用缓蚀剂，在不改变原有生产工艺及发泡参数的基础上，将聚氨酯泡沫浸水析出液的pH值由酸性改变为弱碱性，从而达到抑制或延缓泡夹管腐蚀的目的；采用喷涂聚脉补口技术，有效地提高了现场补口的质量。

They had suppressed the cathodic process of carbon steel electrode. Their inhibition performance was also related with their molecule stereo conformation and electron configuration. Four of bis-(1, 1'-benzotriazoly)-α,β-diamide compounds linked via-CO 〓CO-chain were synthesized and certified by IR and 〓H-NMR. The minimum energy conformations of these compounds were obtained by MM2 forcefield program. The two benzotriazole moiety in BBT1 was more planar than in other compounds. This was beneficial in increasing the inhibition effects of BBT1. In 0.5M H〓SO〓 solution, BBT1 suppressed anodic corrosion reaction. In 3%NaCl solution, BBT1 suppressed both cathodic and anodic corrosion reactions. 1- [ (1'-imidazolly)-methyl] benzotriazole was synthesized by Mannich reaction.

合成了四个通过-CO〓CO-连接的双（1，1'-苯并三唑）-α，ω-二酰胺化合物，采用MM2分子力学程序优化了它们的分子结构，双（1，1'-苯并三唑）-α，ω-二酰胺化合物的缓蚀作用与其分子内两个苯并三唑单元的空间取向有关系，良好的平面性有利于苯并三唑二聚体的吸附和缓蚀作用，苯并三唑二聚体BBT1分子内两个苯并三唑单元近似平行，所以显示出较好的缓蚀效果。0.5M硫酸中BBT1主要抑制铜的阳极溶解的电化学反应；3％NaCl溶液中，BBT1对铜的阳极溶解和氧的阴极还原过程均有抑制作用，相比较而言对阴极过程的抑制作用更大一些。

The distribution of temperature stress was calculated by finite element analysis. The results showed when the surface temperature of concrete was higher than 110℃, the temperature stress was more than 4 MPa without regard to the creep. This might be lead to the damage of the surface of concrete. At the same time, a lot of microstructure analysiss such as XRD, SEM, IR, HSA etc. were done to analysis the difference of the component and microstructre of concrete before and after corrosion. The results indicated that the decomposion of CSH gel and calcium hydroxide and the creation of dilatability calcium oxide were the internal reason of the deterioration of concrete in the corrosion form of high heat.

该文通过有限元方法计算了由于温度而产生的结构应力分布，计算结果表明当混凝土表面温度超过110℃时，如不考虑徐变时表层混凝土受到的温度应力将超过4MPa，这使得表层混凝土很容易因温度应力而破坏；同时通过X射线衍射分析、扫描电子显微分析和混凝土孔结构分析等多种微观结构测试手段，分析了混凝土受热前后的宏观性能以及微观组成和结构的变化，指出混凝土原水化产物如水化硅酸钙凝胶和氢氧化钙的分解以及膨胀性产物氧化钙的产生是高热腐蚀形式下混凝土破坏的内在原因。

Probability distribution of the ratio between maximum corrosion depth and average corrosion depth is confirmed.

确定了最大腐蚀深度与平均腐蚀深度比值的概率分布形式。

This invention discloses a preparation method for anti-corrosion rare earth magnet material characterizing that it takes the optimized grain-boundary phase design as the starting point on the basis of a dual alloy method to select Nd base alloy with high crystal forming ability as the assist alloy and reduces the temperature of the press mold blank in a quartz container to room temperature from over grain-boundary phase melting point with the water extraction way to get enough cooling rate and guarantee the non-grain-boundary phase, compared with the material of the same composition prepared by ordinary method, the weightlessness of this invented material reduces over 30% after testing the weightlessness of the material by laying it for 96 hours under 121deg.C, 2 atmosphere and 100% humid environment to show the advanced performance of anti-corrosion.

本发明公开了一种耐腐蚀稀土永磁材料的制备方法，其特征是它在双合金法制备工艺的基础上，以优化晶界相设计为出发点，选取具有较高非晶形成能力的Nd基合金为辅合金，并在烧结回火时将置于耐高温石英容器中的压型坯件，从晶界相熔点以上以水淬冷却的方式降温至室温，以达到足够的冷却速率，确保得到非晶晶界相，根据本发明制得的耐腐蚀稀土永磁材料，通过测量在121℃、2个大气压以及100％湿度环境下放置96小时后材料的失重情况，结果显示本发明得到的材料与常规方法制备的相同成分的稀土永磁材料相比失重减少了30％以上，充分证明其具备了更优越的耐腐蚀性能。可广泛应用于电子、汽车、计算机、电力、机械、能源、环保、国防、医疗器械等领域。

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全国免费服务热线：400 880 2959主营产品：盐雾腐蚀试验箱/二氧化硫试验箱/高温试验箱/低温试验箱/高低温试验箱/高低温湿热试验箱。/高低温交变湿热试验箱/台式恒温恒湿试验箱/恒温恒湿试验箱/精密干燥试验箱/真空干燥箱/高低温冲击试验箱/紫外光加速老化试验机/氙灯耐气候试验箱/换气式老化试验箱/臭氧老化试验箱/防锈油脂湿热试验箱/砂尘试验箱/箱式淋雨试验箱/摆管淋雨试验装置/滴水试验装置/霉菌交变试验箱/盐雾腐蚀试验室/大型高低温步入试验室/恒温恒湿试验室/盐雾恒温恒湿高温复合试验箱/温度老化室/真空紫外老化试验箱/机械式跌落试验台/电脑控制振动台/温湿度振动三综合试验机/温度快速变化试验箱

The results showed that soil corrosion of mild steel was not only influenced by surrounding media but also controlled by the amout, structure and efflorescence extent of corrosion products at different stages.

本工作以埋在苏打盐土中的A3钢为例，用实验论证低碳钢的腐蚀速度与腐蚀发生与发展的不同时期密切相关，为认识土壤中钢铁的自然腐蚀规律及其机理提供依据。2实验方法2。

If you are unfortunate enough to the lovelorn, please tell me, I will help you out, really, please contact me!

如果你不幸失恋了，请告诉我，我会帮助你摆脱困境，真的，请联系我啦！

China's plan to cut energy intensity by 20 percent and pollutant discharges by 10 percent between 2006 and 2010 is a case in point.

中国计划在2006年到2010间降低20%的能源强度和减少10%的主要污染物排放，就是一个这样的例子。