The corrosion protection of N80 steel in 15% HCl using 2-(3-amino-5-oxo-4,5-dihydro-1 H -pyrazol-1-yl)( p -tolyl)methyl)malononitrile (PZ-1) and 2-((3-amino-5-oxo-4,5-dihydro-1 H -pyrazol-1-yl)(phenyl)methyl)malononitrile (PZ-2) has been investigated.
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Ansari et al. (2016) studied this question.
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