均匀腐蚀

环境因素对CO2均匀腐蚀速率的影响及腐蚀速率预测模型的建立

The effect of environmental factors on CO_2 uniform corrosion rate and the establishment of predictive model

Fe为余量。通过X射线衍射，均匀腐蚀、点腐蚀、晶间腐蚀实验，研究了该合金的显微组织及其腐蚀行为。

The microstructure and corrosion behavior of the alloy were studied by X-ray diffraction and experiments of uniform , intergranular and pitting corrosion .

NaCl浓度高时（>0.1N）对均匀腐蚀起缓蚀作用。

NaCl acts as a general corrosion inhibitor when its concentration is higher ( > 0.1N ) .

CO2均匀腐蚀速率预测模型的建立对于海洋石油工程设计及安全生产具有重要意义。

The establishment of predictive model for CO 2 uniform corrosion is very important to safety production and engineering design of offshore oil industry .

pH值越低，5083铝合金表面越容易发生点蚀，随着pH值的升高，5083铝合金以均匀腐蚀为主。

The lower the pH value , the more easily occurred pitting corrosion , with the pH value increased , aluminum alloy 5083 mainly occurred uniform corrosion . 3 .

试验结果表明，新型合金经1220℃×2h水冷固溶化处理后，具有良好的耐均匀腐蚀性能、较高的抗晶间腐蚀与抗点蚀能力和良好的铸造性能。

Test shows that the alloy after a special treatment is characterized by high corrosion resistance and good castability .

腐蚀结果表明，8＃合金的抗均匀腐蚀性能和抗疖状腐蚀性能均优于Zr－4合金。

The corrosion results show that 8 # alloy is better than zircaloy-4 for both uniform corrosion resistance and nodular corrosion resistance .

提高污水的pH值，能降低碳钢的均匀腐蚀速度，但pH值过高易引起碳钢的缝隙腐蚀。因此，pH值应小于8.5。

Increasing pH value can decrease the uniform corrosion rate on low carbon steel , but the crevice corrosion exacerbates when the pH value is too high ( over 8 . 5 ) .

晶粒细化对Zr-4合金均匀腐蚀性能的影响

Effect of Grain Refinement on Uniform Corrosion Resistance of Zircaloy-4

在NaCl、H2SO4溶液中检验了膜的抗局部腐蚀和均匀腐蚀能力。

The film has undergone the test for resistance to uniform and local corrosions , in H_2SO_4 and NaCl solutions .

采用电化学方法和浸泡实验，研究了Ni对304不锈钢焊接接头的均匀腐蚀、小孔腐蚀、晶间腐蚀和应力腐蚀破裂等性能的影响。

Effect of additions of 7.02 ~ 11.98 percent nickel alone on the corrosion resistance of type 304 stainless steels TIG welded joints was evaluated by electrochemical measurement and immersion tests .

本文设计了新型铸造Ni－Cu合金的化学成分，并通过多种腐蚀试验方法研究了该合金的均匀腐蚀、晶间腐蚀及点蚀行为。

In this paper , chemical compositions of new cast Ni-Cu alloy are designed . Several kinds of methods of corrosion test are applied to investigate the uniform corrosion , intergranular corrosion and pitting corrosion behaviour of the alloy .

分别在H2SO4、NaCl和FeCls3溶液中检验膜的抗均匀腐蚀与抗局部腐蚀的能力，证明所形成的非晶态微合金具有优良的抗腐蚀性。

And the determinations of the ability to resist uniform and local corrosion of such films in H_2S_4 . Nacl and Fecl_3 solutions respectively have shown that the amorphous micro-alloy films formed by this technique have superior corrosion resistance .

对采出水回注系统而言，生物破乳剂能降低采出水的均匀腐蚀速率，减少水中TGB的数量，并减少采出水硫酸钡结垢的趋势。

In terms of reinjection system , the separated water using microbial demulsifiers had lower uniform corrosion rate , less TGB number and slower barium sulfate scaling tendency .

在H2S应力腐蚀工况条件下，焊接接头的均匀腐蚀速率为1.58×10-2mg/（cm2·h），有良好的抗硫化氢腐蚀性能，可满足实际使用要求。

The performance of H_2S corrosion resistance is very good and the rate of uniform corrosion is 1.58 × 10 ~ ( - 2 ) mg / ( cm ~ 2 · h ) in the condition of H_2S stress corrosion . This is satisfied in service .

结果表明烟气管道腐蚀区域呈现典型的均匀腐蚀，喷射管、布气管腐蚀区域呈现典型的点腐蚀形貌，腐蚀产物中S、O、Cl等元素大量超标。

Experimental results show that the corrosion area of the piping shows typical uniform corrosion . The corrosion area of ejector pipe and gas distribution pipe represents a typical pitting corrosion and the contents of S , O and Cl contained in the corrosion product are seriously beyond the standard .

经室内评价和现场工业试验表明，该缓蚀剂及其综合配方能有效地抑制均匀腐蚀，并以抑制点蚀的效果尤为突出，其腐蚀速率和点蚀速率分别小于0.076mm/a和0.456mm/a。

Especially on dot corrosion better result can be obtained . The corrosion and dot corrosion rate are respectively less than 0.076mm/a and 0.456mm/a .

均匀腐蚀试验结果表明，在选定的腐蚀条件下，321不锈钢样品在960h内，其表面光洁度无明显变化，腐蚀速率小于0.04g/m2穐，在低酸度的硝酸铀酰溶液中耐蚀。

The uniform corrosion results showed that the corrosion rate of 321 stainless steel was less than 0.04g / m2 . h , and the visible change of surface smoothness was not observed through 960h . It was perfect corrosion-resisting in obtained conditions .

静态腐蚀实验结果表明，镍在烧碱溶液中的静态腐蚀速度随温度、浓度增加而增加，但大大低于0.1mm/a，根据金属均匀腐蚀的耐蚀性评定为耐蚀。

The main work and conclusions are as follows : 1 . The results of the experiment of quiescence corrosion indicate that the corrosion rate increases with the increase of temperature and NaOH concentration . The values are all lower than 0.1mm/a and the corrosion assess grade is corrosion-resistant .

埋地输油管道均匀腐蚀剩余寿命计算

Calculation on Remaining Life of Buried Crude Pipeline in Uniform Corrosion

金属材料实验室均匀腐蚀全浸试验测量不确定度评定

Uncertainty Evaluation on Uniform Corrosion Method of Laboratory Immersion Test

镁合金表面产生的不均匀腐蚀导致腐蚀产物层不均匀。

The non-uniform corrosion results in non-uniform structure of degradation product layer .

相同条件下，腐蚀磨损速率大于均匀腐蚀速率。

The corrosion wear rate was higher than uniform corrosion rate at the same conditions .

基于材料性能数据库和均匀腐蚀的设备高温损伤在役安全评估系统

Software implementation for safety assessment of fire damage based on the material property and corrosion data

结果表明：合金铸铁在烧碱液中宏观上是均匀腐蚀，腐蚀后，表面均有镍、铜元素的富集现象。

The results show that the corrosion type of the cast iron alloys is the uniform .

摄取的扫描电镜照片显示无点蚀、晶间腐蚀等非均匀腐蚀现象。

SEM showed there are no pitting corrosion , inter-granular corrosion and other non-uniform corrosion on zinc surface .

结果表明：铝合金加工表面先出现了均匀腐蚀，后表现出明显的孔蚀特点。

The results show that , uniform corrosion occurred at first in the surface and turn to pitting corrosion later .

经过对各个不确定度的合成，最后得到金属材料实验室均匀腐蚀全浸试验测量不确定度。

Through combining each uncertainty , obtained is the uncertainty for metallic material uniform corrosion method of laboratory immersion test .

促进α基体钝化进而提高了合金耐均匀腐蚀性能。

Thus developing the passivation of α - matrix so as to improve the resistance to uniform corrosion in the alloy .

通过对全寿命期内锚链的均匀腐蚀与微动磨损进行研究，提出了锚链腐蚀磨损累积损伤的评估方法并给出了数值模拟分析算例。

The assessment method on the accumulative damages of corrosion and wear is presented with the example of the numerical simulation analysis .