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<p>In this study, five composite variants with designated ZTA volume fractions of 10, 13, 16, 19, and 22% were fabricated using modified high-chromium cast iron as the matrix. Following impact resistance testing and observation of the distribution of ceramic particles, the optimal sample was identified and subsequently analyzed. The results showed metallurgical bonding between the MHCI matrix and the ZTA particles. This formed an interfacial layer of 12-14&#xa0;μm containing compounds such as Cr<sub>2</sub>O<sub>3</sub> and Fe<sub>2</sub>SiO<sub>4</sub>. The ZTA-reinforced composite exhibited 46.63% lower wear mass loss than the MHCI composite. Industrial testing of the roller sleeve embedded with the ZTA-reinforced composite demonstrated a service life extension to twice that of its traditional high-chromium cast iron counterpart.</p>

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Microstructure and Performance Analysis of ZTA-Reinforced Modified High-Chromium Cast Iron for Roller Sleeves

  • 期刊论文

  • 发表日期：

    2026年2月26日

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  • Shuang Liu,
  • Haotian Tao,
  • Xiangpeng Chang,
  • Weipng Tong

摘要

In this study, five composite variants with designated ZTA volume fractions of 10, 13, 16, 19, and 22% were fabricated using modified high-chromium cast iron as the matrix. Following impact resistance testing and observation of the distribution of ceramic particles, the optimal sample was identified and subsequently analyzed. The results showed metallurgical bonding between the MHCI matrix and the ZTA particles. This formed an interfacial layer of 12-14 μm containing compounds such as Cr2O3 and Fe2SiO4. The ZTA-reinforced composite exhibited 46.63% lower wear mass loss than the MHCI composite. Industrial testing of the roller sleeve embedded with the ZTA-reinforced composite demonstrated a service life extension to twice that of its traditional high-chromium cast iron counterpart.