Yi Huaqing, Ren Kezhu, Chen Hao, Cheng Xiang, Xie Xiaolong, Liang Mengtian, Yin Bingbing, Yang Yi
School of Materials Science and Engineering, Xiangtan University, Xiangtan 411105, China.
National Innovation Center for Rare Earth Functional Material, Jiangxi University of Science and Technology, Ganzhou 341000, China.
Materials (Basel). 2024 Sep 10;17(18):4451. doi: 10.3390/ma17184451.
During the hot dip aluminum plating process, components such as sinking rollers, pulling rollers, and guide plates will come into long-term contact with high-temperature liquid aluminum and be corroded by the aluminum liquid, greatly reducing their service life. Therefore, the development of a material with excellent corrosion resistance to molten aluminum is used to prepare parts for the dipping and plating equipment and protect the equipment from erosion, which can effectively improve the production efficiency of the factory and strengthen the quality of aluminum-plated materials, which is of great significance for the growth of corporate profits. With AlFeNiCoCr as the binder phase and ZrB as the hard phase, ZrB-based ceramic composites were prepared by spark plasma sintering (SPS). SEM, EDS and XRD were used to characterize the microstructure and properties of the sintered, corroded, and abraded material samples. The density, fracture toughness, corrosion rate and wear amount of the composite material were measured. The results show that ZrB-AlFeNiCoCr ceramics have compact structure and excellent mechanical properties, and the density, hardness and fracture toughness of ZrB-AlFeNiCoCr increase with the increase in sintering temperature. However, when the composite material is at 1600 °C, the relative density of the sintering at 1600 °C decreases due to the overflow of the bonding phase. Therefore, when the sintering temperature is 1500 °C, the high entropy alloy has the best performance. The average corrosion rate of ZrB-1500 at 700 °C liquid aluminum is 1.225 × 10 mm/h, and the wear amount in the friction and wear test is 0.104 mm.
在热浸镀铝过程中，沉没辊、牵引辊和导向板等部件会长期与高温液态铝接触，并受到铝液的腐蚀，大大缩短其使用寿命。因此，开发一种对熔融铝具有优异耐腐蚀性的材料来制备浸镀设备的部件并保护设备免受侵蚀，可有效提高工厂的生产效率并提升镀铝材料的质量，这对企业利润增长具有重要意义。以AlFeNiCoCr为粘结相、ZrB为硬质相，通过放电等离子烧结（SPS）制备了ZrB基金属陶瓷复合材料。利用扫描电子显微镜（SEM）、能谱仪（EDS）和X射线衍射仪（XRD）对烧结、腐蚀和磨损后的材料样品的微观结构和性能进行了表征。测量了复合材料的密度、断裂韧性、腐蚀速率和磨损量。结果表明，ZrB-AlFeNiCoCr陶瓷结构致密，具有优异的力学性能，ZrB-AlFeNiCoCr的密度、硬度和断裂韧性随烧结温度的升高而增加。然而，当复合材料在1600℃时，由于粘结相的溢出，1600℃烧结时的相对密度降低。因此，当烧结温度为1500℃时，高熵合金性能最佳。ZrB-1500在700℃液态铝中的平均腐蚀速率为1.225×10⁻³mm/h，摩擦磨损试验中的磨损量为0.104mm。
