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<p>Ceramics with spatially continuous structure reinforced metal matrix composites are a promising preparation technology. Among various ceramics, ZTA ceramics possess acceptable mechanical and friction properties. It also has no interfacial reaction with most metals. In this study, the preparation process of reticulated ZTA ceramics was optimized. Reticulated ZTA ceramics prepared by template replication method were used to strengthen high-chromium cast iron, and reticulated ZTA ceramics reinforced high-chromium cast iron (ZTA/HCCI) composites were obtained. The results demonstrate that the reticulated ZTA ceramics sintered at 1500 ℃, which was identified as the optimal sintering temperature, exhibited a porosity of 72.18%. In the ZTA/HCCI composite, the hardness gradually decreased from the ZTA ceramics phase (2034.56 HV on average) to the high-chromium cast iron matrix (708.04 HV on average). The average hardness of the interface layer was 1148.71 HV. Wear tests under 10 N and 20 N showed that the reticulated ZTA/HCCI composite exhibited much lower weight loss than HCCI, and after 2000 revolutions under 20 N, the weight loss of the composite was only 38.9% of that of HCCI. Besides the advantages of the ceramic particle enhancement, reticulated ZTA ceramics had the stress dispersion effect and continuous strengthening phase effect.</p>

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Microstructure and Wear Properties of Reticulated ZTA Reinforced High-Chromium Cast Iron

  • 期刊论文

  • 发表日期：

    2026年7月1日

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  • Tian-Xing Huang,
  • Zhuan Li

摘要

Ceramics with spatially continuous structure reinforced metal matrix composites are a promising preparation technology. Among various ceramics, ZTA ceramics possess acceptable mechanical and friction properties. It also has no interfacial reaction with most metals. In this study, the preparation process of reticulated ZTA ceramics was optimized. Reticulated ZTA ceramics prepared by template replication method were used to strengthen high-chromium cast iron, and reticulated ZTA ceramics reinforced high-chromium cast iron (ZTA/HCCI) composites were obtained. The results demonstrate that the reticulated ZTA ceramics sintered at 1500 ℃, which was identified as the optimal sintering temperature, exhibited a porosity of 72.18%. In the ZTA/HCCI composite, the hardness gradually decreased from the ZTA ceramics phase (2034.56 HV on average) to the high-chromium cast iron matrix (708.04 HV on average). The average hardness of the interface layer was 1148.71 HV. Wear tests under 10 N and 20 N showed that the reticulated ZTA/HCCI composite exhibited much lower weight loss than HCCI, and after 2000 revolutions under 20 N, the weight loss of the composite was only 38.9% of that of HCCI. Besides the advantages of the ceramic particle enhancement, reticulated ZTA ceramics had the stress dispersion effect and continuous strengthening phase effect.