Universality of Volatile Corrosion Inhibitors in Terms of Agricultural Production Requirements
2019
Vigdorovich, V. I. | Tsygankova, L. E. | Knyazeva, L. G.
A qualitative and quantitative system of criteria for evaluating the universality of volatile metal corrosion inhibitors (VCIs) with respect to agricultural production conditions has been developed. The system of qualitative criteria for universalism includes (1) assessment of the effectiveness of metal corrosion inhibition under the conditions of the individual or combined action of corrosion-specific stimulators in the vapor-gas phase; (2) suppression of different types of local corrosion that they cause in the corrosion medium; (3) suppression of the general and local corrosion of contacting-metal structural materials with different compositions under specific conditions; and (4) the observance of acceptable specific characteristics of VCIs: ecological characteristics and characteristics related to the hazard class and influence on chemical oxygen consumption (COC) and biochemical oxygen demand for the biodegradation of substances by microorganisms (BOD₅). The system of quantitative criteria for the universalism of VCIs includes quantitative parameters for all proposed qualitative points. It is also proposed to introduce a simplified assessment for agricultural-production conditions by characterizing partially universal inhibitors, which reduces operation costs. Experimental data are given for the IFHAN-114 volatile inhibitor as an example of the effectiveness of the proposed criteria. It is shown that IFHAN-114 is a partially universal inhibitor.
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