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<p>Atmospheric plasma spraying was employed to prepare NB (BN-NiCr) and NM (Mo/BN-NiCr) composite coatings. The incorporation of Mo particles reduced the friction coefficient of NM coatings (0.35–0.42) compared to NB coating. However, excessive Mo content can cause particle rebound, negatively affecting friction performance. The self-lubricating properties of Mo and the layered structure of BN form a lubricating film at the friction interface, reducing the wear rate. Additionally, Mo particles enhance the NiCr coating’s strength and wear resistance. The wear mechanism transitions from adhesive to abrasive wear, with localized high temperatures during friction promoting the formation of oxide films, such as NiO, Cr<sub>2</sub>O<sub>3</sub>, and MoO<sub>3</sub>, further improving the wear resistance.</p>

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Role of Mo particles on microstructure and tribological properties of atmospheric plasma sprayed Mo reinforced BN-NiCr coatings

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年3月25日

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  • Jinyong Xu,
  • Hongyuan Su,
  • Xudong Nie,
  • Zicong Zhang,
  • Yuming Zhou,
  • Sergi Dosta,
  • Chao Zhang

摘要

Atmospheric plasma spraying was employed to prepare NB (BN-NiCr) and NM (Mo/BN-NiCr) composite coatings. The incorporation of Mo particles reduced the friction coefficient of NM coatings (0.35–0.42) compared to NB coating. However, excessive Mo content can cause particle rebound, negatively affecting friction performance. The self-lubricating properties of Mo and the layered structure of BN form a lubricating film at the friction interface, reducing the wear rate. Additionally, Mo particles enhance the NiCr coating’s strength and wear resistance. The wear mechanism transitions from adhesive to abrasive wear, with localized high temperatures during friction promoting the formation of oxide films, such as NiO, Cr2O3, and MoO3, further improving the wear resistance.