Isocorrosion diagrams

Isocitric acid, in citric acid cycle, 6 633 Isocontour surfaces, discrete, 10 340 Isocorrosion diagrams, 23 784 Isocratic chromatography, 3 827 Isocrotonic acid, physical properties,... 

The corrosion resistance of steels in acids is represented by isocorrosion diagrams. The resistance to uniform or general corrosion in various acids and sodium hydroxide was determined by weight loss measurements over a period of 96 h and the resulting data are given in Table 4.12. 

Figure 1-41. Isocorrosion diagram, 0.1 mm year , for high-silicon cast iron in sulfuric acid (Dechema, 1990).

Figure 1-43. Isocorrosion diagram, 0.1mm year" in chemically pure phosphoric acid (Avesta, 1994).

Isocorrosion diagram for alloy 400 in hydrofluoric acid. (From G.F. Hodge. 1999. in Corrosion and Corrosion Protection Handbook, P.A. Schweitzer, Ed., 1st ed.. New York Marcel Dekker.)... 

Isocorrosion diagrams for alloy C-276 have been developed for a number of inorganic acids, including sulfuric, see Figure 15.5. Rather than having one or two acid systems in which the corrosion resistance is exceptional, as... 

The isocorrosion diagram for zirconium in HCl is shown in Figure 22.3. Zirconium is suitable for handling HCl at all concentrations. Moreover, zirconium is not as susceptible to hydrogen embrittlement in HCl as tantalum is. ° As indicated in Reference [20], tantalum lost 33 and 18% of its ductility after 1000 h in 11 M HCl and 11 M HC1 + 7% GaCla, respectively, at 70°C. Under the same testing conditions, zirconium remained imattacked and retained 100% of its ductility. 

Effect of oxidizing ions on the isocorrosion diagram for zirconium in H2SO4. 

A common form of representing the corrosion resistance of materials is what is known as isocorrosion diagrams. The use of the prefix "iso" refers to lines (or regions) of constant corrosion behavior across variations in concentration and temperature. The diagram shown in Fig. 11.2 illustrates how some stainless steels compare to... 

Fig. 16 Isocorrosion diagram for aluminum alloy 1100 In MNO3. Source Ref 62...

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