腐蚀

In order to ascertain the causes and mechanisms of corrosion and abrasion failure,the demonstration analyses and experiments such as macro/microscopy and corrosion substance composition analyses were carried out on the broken section of the man-hole door of refeed valve and air-hood .

重点对返料阀入孔门盖及风帽吹气管断口的宏微观形貌、微区成分、腐蚀物组成等进行表征分析和试验，确定腐蚀磨损产生的原因及腐蚀机理；最后根据实际状况，提出相应的预防措施和建议。

The inhibition mechanism of MoO42- was that MoO42- transformed the hydrate ferrous oxide deposition film from anions selective to cations selective,and the cathodic process of underscale local corrosion was suppressed when it migrated into OCC.Meanwhile, the migrated MoO42- resulted in increasing the impedance of the film on the substrate metal and so inhibited the anodic process of the corrosion reaction inside the OCC.

MoO42-的作用机制在于使水合氧化铁腐蚀膜由阴离子选择性变为阳离子选择性，H+可以从膜下扩散出去，而Cl-难以扩散到膜下富集，抑制了腐蚀反应的阴极过程；同时MoO42-迁入闭塞区后增大了电极表面膜层阻抗，抑制了腐蚀反应的阳极过程。

The amorphous coating is isotropy and unsusceptible to form electrochemical cell in corrosion medium, thereby corrosion is reduced effectively.

非晶态转化膜各向同性，在腐蚀介质中不易形成腐蚀微电池，腐蚀被有效地抑制。

The mathematic model and the neural networks between strength after acidifying and acidified depth can reflect the corrosion condition of mortar and concrete, which have certain referential value for estimating the acidifying resistance durability of concrete in southwest China.

本文最后所得到的腐蚀后的强度和酸化深度的数学模型和神经网络，可以较好的反映混凝土受酸雨腐蚀的变化情况，对我国南方酸雨区的混凝土腐蚀的耐久性和经济评估有一定参考价值。

The corrosion of demineralized water is discussed through the analysis of the quality of demineralized water and corrosion products.

通过对软化水水质及腐蚀产物进行分析，论述了软化水的腐蚀机理，指出水中的溶解氧和氯离子是造成腐蚀的主要原因。

By polarization curve and EIS, equivalent circuit in initial corrosion stage was brought forward. With which the oxygen diffusion (oxygen as a depolarizing agent in cathode) mechanism was proposed and discussed.

作者认为API X60管线钢在不同类型海泥中腐蚀速度的差别主要是由于作为阴极去极化剂的氧在不同类型海泥中的扩散速度不同；根据API X60管线钢在不同类型海泥中的电化学阻抗频谱特征，作者提出了腐蚀过程的等效电路，对腐蚀机制进行了解释。

The corrosion of concentrated sulfuric acid is related to the temperature and the impurity content. The corrosion rate is raised up when the temperature is higher. If the sulfuric acid has some ion nitrated , the pipe corrosion will raise up, too. The product's color is unusual.

浓硫酸管线的腐蚀还与温度及其杂质含量有关，温度的升高，腐蚀速率明显上升；而产品硫酸中含有的硝酸根离子则加剧了硫酸管线的腐蚀，且导致产品硫酸颜色异常。

Corrosion inhibitor JC-6 selected out of 9 commercial chemicals added at dosage 1.5% decreased the corrosion rate of 13Cr-L-80 coupled with N-80 at 60℃ to 0.012 and 0.165 mm/a respectively; JC-6 and PA in various combinations could decrease the corrosion rate further and in mass ratio 9:1 (notated as JCP-6) at dosage of 1.5% could decrease the corrosion rate of the two metals at 70℃ to 0.013 and 0.069 mm/a respectively.

从9种缓蚀剂中筛选出JC-6，在加量1.5%时，13Cr-L-80和N-80偶接、60℃时腐蚀速度分别降至0.012和0.165mm/a；质量比为9：1的JC-6与PA复配物（代号JCP-6）使偶接钢材腐蚀速度进一步降低，在加量1.5%时，70℃时的腐蚀速度分别降至0.013和0.069mm/a。

The corrosion preventions of urea prilling towers have inner corrosion and outer corrosion.

尿素造粒塔的腐蚀有内部腐蚀和外部腐蚀。

The corrosion products of aluminum exposed in the SO2-containing atmosphere are mainly of sulfates, and is therefore it is more serious corrosion in this environment.

对腐蚀产物结构的测定，在含SO2的气氛中铝的腐蚀产物主要是由硫酸盐组成，因而其腐蚀较为严重。

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。