im体育APP provides galvanic corrosion tests in accordance with ASTM G71 and client-specific standards for evaluating the behavior of metals and metallic coatings in accelerated corrosion environments. We help you select appropriate materials at the design stage and offer in-field support to give fast answers in live applications.
Galvanic corrosion occurs when two or more dissimilar metals (electrodes) are brought into electrical contact in the presence of a common corrosive electrolyte (e.g. 海水). 当电偶形成时, the less resistant material becomes the anode and the more resistant the cathode. The cathodic material corrodes slower than normal or not at all, while the corrosion of the anodic material is greatly enhanced.
我们的领导 腐蚀测试 laboratories carry out galvanic 腐蚀测试 on combinations of metals and metallic coatings to evaluate the damage due to galvanic corrosion. We can assist you in selecting the right materials combinations for your required application.
Galvanic corrosion test standards and practices
- ASTM G82 - Guide for 发展 and Use of a Galvanic Series for Predicting Galvanic Corrosion Performance
- ASTM G71 - Practice for Conducting and Evaluating Galvanic Corrosion Tests in Electrolytes
im体育APP’s 从事专家 can apply the standard galvanic series of materials in seawater to predict service performance relatively to galvanic corrosion, whilst taking into consideration differences in environmental conditions that can greatly affect the rank ordering of materials.
电偶暴露
Our 腐蚀测试 laboratories are able to simulate a material’s condition, environment and geometry as close to the application as possible. This allows us to simulate a galvanic corrosion situation where a galvanic couple is constructed between materials and placed in the environment of interest.
电化学分析
im体育APP聘请的专家执行 电化学腐蚀试验 analysis to evaluate galvanic corrosion performance of two or more dissimilar metals when electrically connected in a selected environment using three main test categories:
- Sensitive galvanic current measurement using Zero Resistance Ammetry (ZRA)
- 电偶串联测定
- 优先焊缝腐蚀
im体育APP优势
Our galvanic 腐蚀测试 services provide you with the necessary data on how your materials and components are likely to perform when deployed in the field, to ensure they are always of a high quality and are safe, compliant and ultimately fit for purpose.
For more information about how we perform 电偶腐蚀试验, or to request a quote, 立即im体育APP.
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电化学腐蚀试验
im体育APP provides 电化学腐蚀试验 using Electrochemical Impedance Spectroscopy, cyclic potentiodynamic polarization measurements and galvanic corrosion measurements.
酸性应用腐蚀试验
im体育APP is one of a few ISO certified sour service labs in the world, providing sour service corrosion services for a variety of test types including NACE MR0175/ISO 15156.
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im体育APP的位置
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