腐蚀的

Expression of change of the chemical composition with ferruginous surface of the mild steel in doing wet loop to corrupt a process quickly, structure is in rustily and earlier α- FeOOH content is inferior, rubiginous layer is loose, rustily speed is shown increase along with time of dry wet circulation and rise trend; later period follows α- the addition of FeOOH content and rubiginous layer become more compact, corrode change to drop to increase along with time of dry wet circulation.

在干湿循环加速腐蚀进程中低碳钢表面铁锈的化学组成、结构变化表现为在锈蚀初期α-FeOOH含量较低，锈层疏松，锈蚀速度呈随干湿循环次数增加而上升趋向；后期随α-FeOOH含量的增加和锈层变得更加致密，腐蚀转变为随干湿循环次数增加而下降。

A reasonable explanation was given to this phenomenon in terms of the mechanism of anodic dissolution and characteristics of CO〓 corrosion. The corrosion behavior of P110 steel at lower temperature and pressure showed that, the corrosion product film initially was thin and discontinuous, then with the increase of temperature and exposure time it became thicker and sludgy, at last a new crystalline film formed on the sludgy film.

阳极极化和自然腐蚀电位下的EIS谱随温度变化规律表明，在两种电位下，室温到90℃的温度范围内，都存在一个临界温度，低于CT，电化学阻抗谱表现为三个时间常数，高于CT，谱图为双容抗弧，从阳极反应机理和CO〓腐蚀特征出发对试验结果进行了解释。

The corrosion properties of common cast iron materi als in static (flowing velocity is about 0.1 m/s)and flowing seawater were teste d,and effects of graphite morphology,matrix microstructure and low alloying trea tment on corrosion properties of cast irons were analyzed.

对常用铸铁材料在实海和流动海水条件下的腐蚀性能进行了测试，分析了铸铁中不同石墨形态、基体组织、低合金化对铸铁腐蚀性能的影响机理。

The company own a dozen series of the unattackable Pump producttions, and also support the production with corrosion-resistant valves, piping and special motor products.

公司现有十几个系列的耐腐蚀泵业产品，并生产与之配套的耐腐蚀阀门、管道及特种电机系列产品。

The resultant etched film showed a completely unetched area of copper where the original Etch-resist ink (1) print had previously been.

由此产生蚀刻的影片中，铜完全未腐蚀× 100范围，有关的原始腐蚀，抗油墨（1）印刷以前。

The chemical corrosive wear mechanism of electroless Ni-P coating under unlubricated wear was studied by test and theory and the possibility of as an anti-chemical corrosive wear coating on drill pipe was probed into.

从实验和理论两方面研究了化学镀Ni-P合金在无润滑磨损条件下的化学腐蚀磨损机理，探讨了化学镀Ni-P合金作为钻杆耐腐蚀磨损功能性镀层的可行性。

It disperses equably and never delaminates and deposites within the time of acid pickling. The static corrosion rate tor carbon steel is 0.6g-m-2-h-1 and the efficiency of corrosion inhibition is 99.02%;the dynamic corrosion rate is below 4g-m-2-h-1 and corresponding efficiency is 95.61%.

在酸洗时间内溶液分散均匀，不发生分层、沉淀现象：标准酸洗条件下，对A3钢的静态腐蚀速率为0.6g·m~(-2)·h~(-1)以下，缓蚀率为99.02％：流速为0.4m／s的动态腐蚀速率控制在4g·m~(-2)·h~(-1)以下，缓蚀效率达95.61％。

In this paper, the mechanism and forming process of the cracks in view of the stress corrosion were analyzed accounting for the pressure vessels working in the atmosphere of wet hydrogen sul-phide, sodium hydroxide or liquidized ammonia.

本文分析了压力容器及设备在湿润硫化氢、氢氧化钠溶液和液氨介质中应力腐蚀开裂的机理和应力腐蚀开裂的过程。

The micro-morphology of the fracture surface appears to be the inter-granular brittle before sodium corrosion for the rotary swaging and polishing W-specimens.

经高温钠腐蚀后，旋锻钨试样的晶粒长大，断裂应力和显微硬度显著降低；高温钠腐蚀对抛光钨试样的断裂应力和显微硬度似乎无明显影响。

In order to investigate the corrosion of power plant chimney by the condensed sulfuric acid from the flue gas,corrosion of C30 concrete exposed to 15% sulfuric acid solution at 80℃ was studied.

研究了电站烟囱C30混凝土在80℃、质量分数为15%硫酸溶液浸泡条件下的腐蚀规律，根据Fick扩散方程和反应速率方程，提出一个简化的移动边界腐蚀模型。

Shop assistant: Please check at the door.

店员：请您到门口柜台交费。

In the end, transportation of PAHs in the environmental matrix was preliminarily investigated and discussed according to PAHs data of soils and sediments from a certain region in Shanghai. The result indicated that there are two or more pathways on PAHs transportation in the environmental matrix.

最后，对上海特定地区内PAHs在环境介质中的迁移径途进行了分析讨论，结果表明上海市土壤和沉积物等环境介质中PAHs的迁移存在多种途径。