Scholarlink

<p>This study examines the inhibitive properties of chicken bone ash (CBA) for AA6063 in 1&#xa0;M NaOH solution at temperature variations of 30–50&#xa0;°C. Electrochemical techniques, including potentiodynamic polarization and linear polarisation resistance (LSV), were used to evaluate inhibition efficiency (IE) and adsorption behaviour. Electrochemical results demonstrated 98% efficiency at 0.6&#xa0;g CBA (303&#xa0;K), with polarisation resistance rising from 152 to 6.89 kΩ. Adsorption adhered strictly to the Langmuir model (<i>R</i><sup>2</sup> &gt; 0.998), confirming monolayer chemisorption. ΔG°<sub>ads</sub> values (− 22 to − 54&#xa0;kJ/mol) indicated strong, temperature-enhanced binding. Optical microscopy validated reduced pitting. RSM optimization yielded 0.564&#xa0;g CBA at 37.4&#xa0;°C (CR = 0.054&#xa0;mm/year). The findings highlight CBA as a sustainable inhibitor for aluminium alloys in alkaline environments.</p> Graphical abstract <p></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

Mechanistic insights into the corrosion inhibition of AA6063 aluminium alloy in NaOH solution using chicken bone ash: Experimental and analytical studies

  • 期刊论文

  • 发表日期：

    2025年9月25日

查看全文
  • Onyeka G. Ogbuozobe,
  • Ojo S. I. Fayomi,
  • Joshua O. Atiba,
  • Tien-Chien Jen

摘要

This study examines the inhibitive properties of chicken bone ash (CBA) for AA6063 in 1 M NaOH solution at temperature variations of 30–50 °C. Electrochemical techniques, including potentiodynamic polarization and linear polarisation resistance (LSV), were used to evaluate inhibition efficiency (IE) and adsorption behaviour. Electrochemical results demonstrated 98% efficiency at 0.6 g CBA (303 K), with polarisation resistance rising from 152 to 6.89 kΩ. Adsorption adhered strictly to the Langmuir model (R2 > 0.998), confirming monolayer chemisorption. ΔG°ads values (− 22 to − 54 kJ/mol) indicated strong, temperature-enhanced binding. Optical microscopy validated reduced pitting. RSM optimization yielded 0.564 g CBA at 37.4 °C (CR = 0.054 mm/year). The findings highlight CBA as a sustainable inhibitor for aluminium alloys in alkaline environments.

Graphical abstract