High-temperature inhibitors of stainless steel corrosion in hydrochloric acid solutionsстатья
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Дата последнего поиска статьи во внешних источниках: 20 марта 2018 г.
Аннотация:The corrosion of chromium-nickel steel 08Kh18N10T in 2 M HCl has been studied in a broad temperature range, t = 0–160°C. Under these conditions, the metal corrosion is enhanced with an increase in temperature to reach 5.0 kg/(m2·h) at 160°C. It has been shown that the IFKhAN-92 inhibitor (a substituted triazole) and its formulation with urotropine in a molar ratio of 1:4 protect this steel in 2 M HCl at temperatures up to 120°C, inclusive. The three-component mixture of IFKhAN-92, KI and urotropine (1:1:4) is more promising in this respect, as it efficiently inhibits corrosion at temperatures up to 160°C and allows the protective effect to be maintained for at least 8 h. This formulation also reliably protects low-carbon steel 20 in 2 M HCl at temperatures up to 160°C, inclusive.