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- The effect of nitrogen on pitting corrosion and passivation behavior of 00Cr18Ni8 aust. enitic stainless steel has been investigated using corrosion test and electrochemical measurement. 本文采用腐蚀实验和电化学方法研究了氮对00Cr18Ni8奥氏体不锈钢耐点蚀性能和钝化行为的影响。
- The microstructure after heat treatment was observed,the content of ferrite was measured(<40%),and the hardness measurement,pitting corrosion and intercrystalline corrosion test were also conducted. 对热处理后的组织进行了金相观察,测定铁素体体积百分含量低于40%25,并进行硬度测量、点腐蚀以及晶间腐蚀试验。
- pitting corrosion test 点腐蚀试验
- Dental metallic materials - Corrosion test methods. 牙科用金属材料。抗腐蚀试验方法。
- The citric acid passivation process of 316L stainless steel was studied by means of orthogonal test and its influence on pitting corrosion resistance was evaluated by potentiodynamic method. 采用正交试验方法研究了316L不锈钢柠檬酸钝化工艺,利用电化学测试方法测量了不锈钢焊接接头各部位在钝化前后点蚀电位的变化,并以此评价钝化工艺对不锈钢耐点蚀性能的影响。
- The test results show that the sulfate-reducing bacteria participate in electrochemical corrosion, accelerate the localized corrosion, destroy passivation and induce pit corrosion to the stainless steel. 实验结果表明,硫酸盐还原菌参与了不锈钢的电化学腐蚀,加速了腐蚀速度,破坏了不锈钢的钝化层,诱导了不锈钢点蚀的发生。
- The results indicated that the dejects was caused by pitting corrosion of impurity element iron in silver coin by environmental chloride compound. 结果表明,在银币缺陷部位的腐蚀坑内存在以铁元素为主的物质,基材中的铁元素与外界的氯引起银币的腐蚀,造成了表面缺陷。
- However, the corrosion specifically pitting corrosion prevails in the copper tubes. 通常这些热交换器都以铜管为冷却水通路。
- The cause of pitting appeared during hard chromium plating is pitting corrosion occurred on matrix local surface. 镀硬铬时出现麻点主要与基体表面局部产生点蚀有关。
- The Metallic tank has mostly the local corrosion,The most obvious type is pitting corrosion. 金属油罐的腐蚀大多为局部腐蚀,其中点腐蚀最为明显。
- It was shown that Na2CO3 inhibited the pitting corrosion of aluminum alloy to some extent. 实验结果表明,碳酸钠对铝合金具有较好的缓蚀作用,在一定程度上抑制了铝合金的点蚀。
- Bronze is very resistant to pitting corrosion, with general resistance to most chemicals less than that of pure copper. 青铜具有含好的耐点状腐蚀的性能,对于大多数化学物质,青铜的耐腐蚀性并不比纯铜差多少。
- The corrosion test showed that such glass flakes contained paint could be adopted in different applications. 介绍了玻璃鳞片防蚀涂料的研制和应用。
- Pitting corrosion of steam turbine blading steels: the influence of chromium content, temperature, and chloride lon concentration. 铬含量、温度和氯化物浓度对蒸汽轮机叶片钢点蚀的影响。
- The time of CuSO 4 dropping corrosion test of the film is more than two minutes. 该处理液高效节能,生成的磷化膜灰色均匀,硫酸铜点滴时间在2分钟以上。
- The coating corrosion was pitting corrosion in HCl solution and crevice corrosion in H_2SO_4,H_3PO4 and FeCl_3 solutions. 镀层在HCl溶液中的腐蚀属于点蚀,在H2SO4、H3PO4和FeCl3溶液中的腐蚀属于缝隙腐蚀。
- The gasolene treated passed the Doctor test, the corrosion test of copper sheet.The product qualified rate is 100%. 预精制后的汽油博士试验合格,铜片腐蚀合格,产品合格率为100%25。
- Na2MoO4 and Na3VO4 could prevent the pitting corrosion in solution containing Cl-and CO2, and they had a synergistic inhibition effect. Na2MoO4、Na3VO4等对430不锈钢在含Cl-及CO2体系中的孔蚀有抑制作用,且Na2MoO4和Na3VO4有一定的协同效应。
- Abstract:Severe pitting corrosion took place on the external surface of the low temperature reheater of a 300 MW unit boiler in a power plant. 某发电厂300MW机组锅炉,每次大小修检查都发现低温再热器外壁存在点腐蚀现象。
- On the basis of corrosion test data and their statistical analysis, the relationship between alloying elements and corrosion rate has been derived. 在典型的制盐生产工艺使用的卤水介质中,进行了不同成分的低合金钢的腐蚀试验。