Corrosion inhibition of WE43 Mg alloy by salicylic compounds: Influence of nitro substitution
Source abstract
Abstract
The corrosion inhibition of WE43 Mg alloy by salicylic acid (SA) and 3,5-dinitrosalicylic acid (DNSA) was investigated in a 0.2 M NaCl solution using electrochemical techniques, pH measurements, inductive coupled plasma-optical emission spectroscopy (ICP-OES) and SEM-EDX analyses. SA has a poor performance while DNSA was efficient after some hours of immersion in the NaCl solution. The observed behaviour was attributed, for short immersion times, to a buffering effect of DNSA which delayed the Mg(OH) 2 crystal growth on the alloy surface, and for longer immersion times, to an enrichment of the corrosion products layer by the alloying elements. • SA forms soluble complexes and is not effective to protect the WE43 Mg alloy. • DNSA buffers the interfacial pH and leads to an enrichment in Y and Nd of the corrosion products layers. • The DNSA efficiency is higher for longer immersion times.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Magnesium Alloys: Properties and Applications · Hydrogen Storage and Materials · Corrosion Behavior and Inhibition
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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