Scholarlink

Abstract <p>The effect of mechanical activation in a spherical planetary mill on the properties of VNH-L-20, VNH-L-406, and VNH-L-408 corrosion inhibitors has been investigated. It has been established that mechanical activation does not change the type of crystal lattice of inhibitors but leads to the protonation of nitrogen atoms in the heterocycles of VNH-L-406 and VNH-L-408 and the destruction of single-bond cycles with the formation of aliphatic structures. As a result, the electron density on nitrogen atoms increases and the hydrophobicity of molecules decreases. The relative corrosion rate of iron in sulfate-chloride and borate environments increases with decreasing hydrophobicity and increasing proportion of protonated forms of inhibitors in corrosive environments. Differences in the interaction of Zn surface with inhibitors with cyclohexylamine and inhibitors with morpholine were ascertained. The morphology of the corrosive surface has a “scaly” appearance in the first case and a “fine-grained” appearance in the second case. An inhibitor that does not have a benzotriazole molecule in its composition accelerates the corrosion of iron in a borate medium. Mechanical activation slightly affects the physicochemical and protective properties of inhibitors in both sulfate-chloride and borate environments. It was concluded that inhibitors based on morpholine and benzotriazole can be used to protect Fe in severe deformation conditions (close to the conditions of mechanical activation in a spherical planetary mill). Explicit dependence of the inhibitory properties with respect to the Zn coating in sulfate-chloride and borate corrosive environments on the chemical structure of the inhibitors was not established.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Effect of a Ball Milling of VNH-L Type Inhibitors on the Corrosion of Iron and Zinc: 2. Inhibitors on the Basis of Benzotriazole and Morpholine

  • 期刊论文

  • 发表日期：

    2025年6月1日

查看全文
  • O. M. Kanunnikova,
  • S. M. Reshetnikov,
  • V. V. Aksenova,
  • A. A. Suslov,
  • B. E. Pushkarev,
  • N. B. Perevoshchikova,
  • V. I. Ladyanov

摘要

Abstract

The effect of mechanical activation in a spherical planetary mill on the properties of VNH-L-20, VNH-L-406, and VNH-L-408 corrosion inhibitors has been investigated. It has been established that mechanical activation does not change the type of crystal lattice of inhibitors but leads to the protonation of nitrogen atoms in the heterocycles of VNH-L-406 and VNH-L-408 and the destruction of single-bond cycles with the formation of aliphatic structures. As a result, the electron density on nitrogen atoms increases and the hydrophobicity of molecules decreases. The relative corrosion rate of iron in sulfate-chloride and borate environments increases with decreasing hydrophobicity and increasing proportion of protonated forms of inhibitors in corrosive environments. Differences in the interaction of Zn surface with inhibitors with cyclohexylamine and inhibitors with morpholine were ascertained. The morphology of the corrosive surface has a “scaly” appearance in the first case and a “fine-grained” appearance in the second case. An inhibitor that does not have a benzotriazole molecule in its composition accelerates the corrosion of iron in a borate medium. Mechanical activation slightly affects the physicochemical and protective properties of inhibitors in both sulfate-chloride and borate environments. It was concluded that inhibitors based on morpholine and benzotriazole can be used to protect Fe in severe deformation conditions (close to the conditions of mechanical activation in a spherical planetary mill). Explicit dependence of the inhibitory properties with respect to the Zn coating in sulfate-chloride and borate corrosive environments on the chemical structure of the inhibitors was not established.