Corrosion Engineering Testing

Conduct in-house inhibitor tests to determine which inhibitor and at what concentration to use. The tests must be conducted following the recommended practices of NACE or ASTM. ASTM (American Society for Testing and Materials) and NACE (National Association of Corrosion Engineers) publish standards for such tests. 

Combination electrical methods Tomashov and Mikhailovsky describe a method developed in the Soviet Union. This test is essentially a combination of resistivity measurement and polarisation rates on iron electrodes in soil in situ. The usefulness and value of this procedure has not as yet been determined by practical application by corrosion engineers. The development of this combination test does, however, represent an attempt to integrate some of the complex factors controlling corrosion rates in soil. Much more research on these factors and methods of measurement should in the future enable the corrosion engineer to evaluate soil properties with respect to application of corrosion-alleviating operations. 

Apart from the instruments described in previous paragraphs, there are others that, while not directly connected with cathodic protection as such, are extremely useful tools to a corrosion engineer. They include pH meters. Redox probes, protective-coating test instruments and buried-metal-location instruments. 

Laurence J Craigie, B S>Chem. Composite Resources, LLC industry consultant in regulatory, manufacturing, and business needs for the composite industry Member, American Society of Mechanical Engineers (Chairman RTP Corrosion Resistant Equipment Committee) Member, American Society of Testing and Materials Member, National Association of Corrosion Engineers International Member, Composite Fabricators of America (received President s Award) (Reinforced Thermosetting Plastie)... 

NACE (1974) Standard TM-01-69 Laboratory Corrosion Testing of Metals for the Process Industries (National Association of Corrosion Engineers). 

The API SJ motor oil test (adapted in 1996) and ILSAC GF-2 are comprised of a set of engine tests for defining minimum oil performance requirements. These tests are as follows bearing wear and corrosion (Sequence L-38), valve corrosion (Sequence II-D), sludge formation (Sequence III-E), degradation wear products (Sequence V-E), and fuel economy (Sequence VI-A), (Lakes, 1999). For abbreviations see Chapter 8. 

Ball rust test the new bench test to replace the Sequence II D engine test to measure rust and corrosion at low temperatures. 

Uses a single-cylinder test engine (42.3 CID). This engine test is similar to L-38 except that fuel used is unleaded test measures bearing corrosion, sludge, oil oxidation, varnish, and viscosity change. 

National Association of Corrosion Engineers, Corrosion Testing made easy series, Houston, Texas, U.S.A., 1985. 

Onuki, K., loka, I., Futakawa, M., Nakajima, H., Shimizu, S., and Tayama, I., Screening tests on materials of construction for the thermochemical IS process. Corrosion Engineering, 46, 141-149, 1997. 

Scully, J.R. and Young, G.A., Jr., The effects of temper, test temperature, and alloyed copper on the hydrogen-controlled crack growth rate of an Al-Zn-Mg-(Cu) alloy, in Corrosion 2000, National Association of Corrosion Engineers, Houston, TX, 2000, paper 368. 

Corrosion Screening Tests with Ni-Base Alloys in Supercritical Water Containing Hydrochloric Acid and Oxygen. HTD-Vol. 335 Proceedings of the ASME Heat Transfer Division (International Mechanical Engineering Congress and Exposition, USA) Volume 4, 159-167. 

The ultimate evaluation of the corrosion protection afforded by a particular lubricant formulation is the Sequence IID engine test. This test simulates short trips in winter conditions. Such trips promote corrosion/rust on the engine components due to water condensation in the engine. The test lasts for 32 h, after which a mst rating is determined. 

High-Temperature Corrosion Bench Test at 135°C measuring increased corrosion by used oils of common metals in engines, e.g. copper and lead, from increased operating temperatures. 

It is a liquid and corrodes steel (SAE 1020) at a rate greater than 6.35 mm (0.250 inch) per year at a test temperature of 55°C (130 F) as determined by the test method specified in NACE (National Association of Corrosion Engineers) Standard TM-01-69 or an equivalent test method approved by the Administrator. 

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