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<p>Deacetylated chitosan–aluminum microstructure-dependent reactions were achieved through surface mechanical alloying ‘SMA’ on pre-designed severe plastic-deformed ‘SPD’ Al substrate’s microstructure compared to the annealed one. Aluminum nitride cubic AlN, organometallic methyl(<i>t</i>-butyl) amide dimethylaluminum ((CH<sub>3</sub>)(C(CH<sub>3</sub>)<sub>3</sub>)N)(Al(CH<sub>3</sub>)<sub>2</sub>), (H<sub>3</sub>O)<sub>2</sub>Al<sub>22</sub>O<sub>34</sub> and (NO)<sub>2</sub>Al<sub>22</sub>O<sub>34</sub> phases were identified using grazing incident X-ray diffraction on Al substrates after 10&#xa0;min-SMA processing with deacetylated chitosan. Results indicate microstructure independent AlN phase growth on all Al substrates whereas microstructure-dependent growth on etched-SMAT Al substrate. Discussion was given on the role played due to uncovered open to surface micro-cavities after etching. Concluding possible industrial benefits of such surfaces having Al organometallic, (H<sub>3</sub>O)<sub>2</sub>Al<sub>22</sub>O<sub>34</sub> and (NO)<sub>2</sub>Al<sub>22</sub>O<sub>34</sub> phases those have application as catalytic active compounds.</p>

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Aluminum/Chitosan Microstructure-Dependent Reactions via Surface Mechanical Alloying on Severe Plastic-Deformed Aluminum

  • 期刊论文

  • 发表日期：

    2025年7月12日

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  • M. R. Ebrahim,
  • Omnia S. Shehata,
  • M. F. Shaaban

摘要

Deacetylated chitosan–aluminum microstructure-dependent reactions were achieved through surface mechanical alloying ‘SMA’ on pre-designed severe plastic-deformed ‘SPD’ Al substrate’s microstructure compared to the annealed one. Aluminum nitride cubic AlN, organometallic methyl(t-butyl) amide dimethylaluminum ((CH3)(C(CH3)3)N)(Al(CH3)2), (H3O)2Al22O34 and (NO)2Al22O34 phases were identified using grazing incident X-ray diffraction on Al substrates after 10 min-SMA processing with deacetylated chitosan. Results indicate microstructure independent AlN phase growth on all Al substrates whereas microstructure-dependent growth on etched-SMAT Al substrate. Discussion was given on the role played due to uncovered open to surface micro-cavities after etching. Concluding possible industrial benefits of such surfaces having Al organometallic, (H3O)2Al22O34 and (NO)2Al22O34 phases those have application as catalytic active compounds.