Scholarlink

<p>AlTiN/AlTiCrN coatings have received significant attention for their ability to enhance tribological performance, particularly in the woodworking industry. However, their tribological behaviour remains relatively under-explored. Therefore, this study aims to investigate the tribological behaviour of cathodic arc-evaporated coatings deposited on AISI A8 tool steel, including a bilayer AlTiN (I)/AlTiCrN coating (designated as AlTiCrN I) and two trilayer coatings (AlTiCrN II and III) with an AlTiN(I)/AlTiN (II)/AlTiCrN architecture, differing in composition and thickness. The intent is to forecast the performance of the coatings under woodworking conditions through microstructural, nanoindentation, adhesion, corrosion, and wear characterizations. The results revealed that AlTiCrN II and III coatings exhibited fewer surface defects and lower surface roughness compared to AlTiCrN I. Compositional analysis indicated the enhancement of the (111) orientation from AlTiCrN I to III. Furthermore, while the AlTiCrN I exhibited a stoichiometric AlTiN (I) base layer, AlTiCrN II and III were characterized by non-stoichiometric AlTiN (II) base layers, which significantly improved the adhesion strength. The hardness, adhesion strength, and fracture resistance indices consistently increased from AlTiCrN I to III. Notably, the AlTiCrN III coating presented a wear rate that was 15 pct and 29 pct lower than those of AlTiCrN II and I, respectively. This improvement is attributed to the synergistic effects of higher hardness, enhanced fracture resistance, better adhesion strength, and reduced surface roughness. The corrosion resistance of the AlTiCrN III coating was also superior, achieving a 78 pct protective efficiency, due to its higher Cr content, reduced defects, and the layered architecture. These findings underscore the potential of engineered layered AlTiN/AlTiCrN-based coatings for enhanced tribological performance in woodworking applications.</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 Layered Architectural Design on the Tribological Behaviour of AlTiN/AlTiCrN-Based Cathodic Arc Evaporated Physical Vapour Deposition Coatings

  • 期刊论文

  • 发表日期：

    2025年5月15日

查看全文
  • Musa Muhammed,
  • Mousa Javidani,
  • Tahere Ebrahimi Sadrabadi,
  • Majid Heidari,
  • Tom Levasseur,
  • Mohammad Jahazi

摘要

AlTiN/AlTiCrN coatings have received significant attention for their ability to enhance tribological performance, particularly in the woodworking industry. However, their tribological behaviour remains relatively under-explored. Therefore, this study aims to investigate the tribological behaviour of cathodic arc-evaporated coatings deposited on AISI A8 tool steel, including a bilayer AlTiN (I)/AlTiCrN coating (designated as AlTiCrN I) and two trilayer coatings (AlTiCrN II and III) with an AlTiN(I)/AlTiN (II)/AlTiCrN architecture, differing in composition and thickness. The intent is to forecast the performance of the coatings under woodworking conditions through microstructural, nanoindentation, adhesion, corrosion, and wear characterizations. The results revealed that AlTiCrN II and III coatings exhibited fewer surface defects and lower surface roughness compared to AlTiCrN I. Compositional analysis indicated the enhancement of the (111) orientation from AlTiCrN I to III. Furthermore, while the AlTiCrN I exhibited a stoichiometric AlTiN (I) base layer, AlTiCrN II and III were characterized by non-stoichiometric AlTiN (II) base layers, which significantly improved the adhesion strength. The hardness, adhesion strength, and fracture resistance indices consistently increased from AlTiCrN I to III. Notably, the AlTiCrN III coating presented a wear rate that was 15 pct and 29 pct lower than those of AlTiCrN II and I, respectively. This improvement is attributed to the synergistic effects of higher hardness, enhanced fracture resistance, better adhesion strength, and reduced surface roughness. The corrosion resistance of the AlTiCrN III coating was also superior, achieving a 78 pct protective efficiency, due to its higher Cr content, reduced defects, and the layered architecture. These findings underscore the potential of engineered layered AlTiN/AlTiCrN-based coatings for enhanced tribological performance in woodworking applications.