腐蚀

The scale formed on pure Ti is exclusively TiO2 regardless of temperature, while the scales formed onTi3Al and Ti3Al+TiAl were duplex and always spalled after cooling, consisting of the outer-layer of most TiO2 and the inner-layer of most TiO2, Al2O3, and minor Ti(subscript 1-x)S. The formation of Al2O3 is responsible for the reduction in the corrosion rates of Ti-Al alloys as compared to those of pure Ti.

纯Ti在800～1000℃的腐蚀生成物皆是TiO2，而Ti3Al和Ti3Al+TiAl则形成两层易剥落的腐蚀物，包括外层的TiO2，及内层多量TiO2和少量的Al2O3和微量的Ti(下标 1-x)S，其中，Al2O3的生成是造成Ti3Al和Ti3Al+TiAl合金腐蚀速率较纯Ti为低的主因。

Granular corrosion products, surface corrosion pits, cracked and spalled passivation films are observed. The size of the corrosion pits is around several tens to several hundred nm in depth. After long testing time, lots of granular corrosion products ranging 200 to 300 nm in diameter are observed on the surface.

由即时撷取之不锈钢表面形貌影像发现，试片表面之平均粗糙度随著浸泡腐蚀时间增加而变大；试片表面之钝化膜亦被侵蚀破裂，试片表面之各种大小形态蚀孔亦能完整观察，蚀孔之深度自数十奈米至数百奈米不等。420SS於长时间浸泡腐蚀之后，表面生成直径约200至300奈米之颗粒状腐蚀生成物。

Slight stress corrosion cracking phenomenon occurred accompanying with a little dot corrosion. On the other hand, sensitised treatment will decrease the IGSCC resistance of stainless steel.

依据乙二醇蒸发器所处的实际工况，模拟了三种不锈钢材料的焊接接头在敏化状态和焊态下，在含有微量氯离子的甲酸乙酸介质环境中的腐蚀现象，实验结果表明：三种不锈钢材料的晶间腐蚀开裂敏感性很低，仅出现了轻微应力腐蚀开裂迹象，并且伴随轻微的点蚀。

The paper describes in detail the four factors resulting in the corrosion of buried steel pipeline,that is environment,corrosion control effectiveness,material of pipe steel,and stress of pipeline,presents a total statistics on petroleum asphalt,coal-tar enemal,extruded polyethylene coating,PE tape,FBE,and multiple coating system and the individual percentage of theirs per years during 1990-1995,and points out that the selection of all kinds of coatings,being different behaviors,should be defermined according to the geological conditions and corrosive environments along pipeline route.

阐述了埋地钢质管道发生腐蚀的四个影响因素，即环境、腐蚀防护效果、钢管材质和制造工艺以及应力水平，统计了1990-1995年石油沥青、煤焦油瓷漆、挤塑聚乙烯、PE胶带、FBE、复合覆盖层的涂敷量，指出防腐覆盖层各有优缺点，应根据管道线路的地质条件、腐蚀环境等而定，目前应建立防腐层的综合评价方法以解决防腐覆盖层的设计问题，同时还应对钢管表面处理、现场补口加以重视，在采用高强薄壁钢材时应考虑壁厚要求。

A three layers BP neural network model for the corrosion weight-loss of the gas turbine wheel part in heavy oil impurity environments was set up by using Nimonic 80A corrosion weight-loss data in the different heavy oil impurity environments, and the influence law of the gas turbine wheel part corrosion weight-loss was predicted.

利用三层BP神经网络，根据已有的镍基合金（Nimonic 80A合金镍基沉淀硬化）在不同重油杂质环境参数下的腐蚀速度数据，建立了燃气轮机的涡轮部件在重油杂质环境中腐蚀失重的人工神经网络模型，并进一步预测了腐蚀失重。

Immersion-wet-dry combined cyclic test was applied to study the synergistic effect of chloride and sulphur-bearing pollutant in atmospheric corrosion of mild steel.

氯化物、硫污染物对碳钢大气腐蚀的协同作用蔡健平，郑逸苹，刘寿荣（中国科学院金属腐蚀与防护研究所沈阳110015）摘要应用浸渍－润湿－干燥循环法研究了氯化物、硫污染物对碳钢大气腐蚀的影响。

Through studying mechanism of drilling string failure in the action of interaction of cyclicstresses and corrosion, we find fracture source is accord with pitting corrosion inside surface ofdrilling string, crack from pitting corrosion lead to drilling string failure, the process of drillingstring failure is new drilling string → corrosion pit forming and crack initiation → corrosionfatigue crack propagation→piercement or fracture.

通过研究在钻柱交变应力和腐蚀的交互作用下的机理发现，腐蚀疲劳裂纹源与钻杆内壁蚀坑对应，蚀坑萌生裂纹造成钻柱失效，钻柱腐蚀疲劳破坏过程归结为：新钻杆—蚀坑形成及裂纹萌生—裂纹扩展—刺穿和断裂。

Experimental results show that cycle loading accelerated the corrosion of steel bar.

结果表明，循环荷载作用对构件钢筋的腐蚀有明显的促进作用，证实了腐蚀疲劳是腐蚀环境和循环荷载耦合作用的结果。

Among the 9 copper alloys, brass with double phase and silicon bronze are the most sensitive ones to corrosion of flowing seawater,i.e.the most severe corrosion of the two alloys happened in zhoushan.

分析研究了 4种铜合金在舟山、青岛、榆林各海水腐蚀试验站暴露4年以上的腐蚀数据，得到流动海水和污染海水对铜合金脱成分腐蚀的基本规律和机理。

The failure law of FeCl_3 solution is studied by measuring redox potential of the etching solution.

通过测定腐蚀液的氧化还原电位的变化，研究了FeCl3腐蚀液的失效规律，并以还原铁粉为置换剂，去除含镍的FeCl3腐蚀液中的镍组分。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。