High-temperature corrosion general aspects

Liquid Phases in High-Temperature Corrosion 13.4.1 General Aspects... 

Ceramics can be defined as heat-resistant, nonmetallic, inorganic sofids that are (generally) made up of compounds formed from metalfic and nonmetalfic elements. Although different types of ceramics can have very different properties, in general ceramics are corrosion-resistant and hard, but britde. Most ceramics are also good insulators and can withstand high temperatures. These properties have led to their use in virtually every aspect of modern life. 

NACE TM0274 appears to be an outgrowth of the previously mentioned TM0171 test method. It is similar in many aspects. The major difference is the use of a dynamic recirculation loop which accommodates both a high temperature test station and a low temperature test station in which corrosion coupons can be placed. This method can be used for (1) the quantitative measurement of the general corrosion rates of metallic materials for consideration for use in high-purity water, (2) the determination of the effects of flow velocity, and (3) the estimation of the release rate of metallic elements to the aqueous medium. No provisions... 

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