Abstract High-chromium cast iron with high nitrogen content (HNHCCI) was prepared using a vacuum induction barotropic furnace, and the erosion–wear behaviors of HNHCCI were investigated with a rotary erosion–wear tester. Results show that most of the nitrogen in HNHCCI dissolves into the matrix and some nitrogen forms carbonitride in the solidification process. The relative wear resistance of HNHCCI can reach 1.34 times that of high-chromium cast iron. The erosion–wear morphologies are ploughing, indentation, and large chips in water–sand slurry, whereas it is galvanic corrosion and carbide fracture in acid–sand slurry. HNHCCI has better mechanical properties and corrosion resistance than HCCI, decreasing the synergism of corrosion and wear. Therefore, HNHCCI has a lower erosion–wear rate.

中文翻译：

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高含氮高铬铸铁在水砂浆和酸砂浆中的冲刷磨损行为

摘要 采用真空感应正压炉制备高氮高铬铸铁（HNHCCI），并用旋转冲蚀磨损试验机研究了HNHCCI的冲蚀磨损行为。结果表明，HNHCCI 中的大部分氮溶解在基体中，部分氮在凝固过程中形成碳氮化物。HNHCCI的相对耐磨性可达高铬铸铁的1.34倍。水砂浆的侵蚀磨损形态为犁沟、压痕和大切屑，而酸砂浆则为电偶腐蚀和碳化物断裂。HNHCCI 具有比HCCI 更好的机械性能和耐腐蚀性能，减少了腐蚀和磨损的协同作用。因此，HNHCCI 具有较低的侵蚀磨损率。