The effect of production conditions on the phase composition, structure, and properties of powder materials made of iron and chromium steels (Kh17N2, Kh13M2) containing 35 wt.% ferrochrome (FKh800) was examined. The samples of composition (wt.%) 65Kh17N2–35FKh800, 65Kh13M2–35FKh800, and 65Fe–35FKh800 were prepared by single pressing and sintering in the range 1150–1270°C in vacuum involving isothermal holding for 30 min. The mixtures were preliminary ground in a ball mill in alcohol for 72 h. The high-carbon FKh800 ferrochrome powder (8.6 wt.% C) was prepared by mechanical grinding of the bulk material. The microstructure of the samples was studied using a REM-106I scanning electron microscope. The structure of the carbide steels was found to change from two-phase (when iron powder was used) to three-phase (when Kh13M2 and Kh17N2 chromium steel powders were used). The composition of the matrix phase insignificantly influenced the density and hardness of the carbide steels but slightly increased the bending strength of the Kh13M2-matrix composite. The materials were tested for abrasive wear resistance by dry shaft–plane friction against a diamond wheel. The mass wear of the carbide steels with an iron matrix was 2.1–2.4 times higher than that of the carbide steels with Kh13M2 and Kh17N2 matrices. Corrosion tests were performed with an accelerated method, in which the sample was periodically immersed into a 20% HNO 3 solution. The samples with iron and Kh13M2 and Kh17N2 chromium steel matrices showed resistance in a nitric acid solution.

中文翻译：

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铁（铬钢）-高碳铬铁粉末复合材料的结构和性能

研究了生产条件对含有 35 wt.% 铬铁 (FKh800) 的铁和铬钢 (Kh17N2, Kh13M2) 粉末材料的相组成、结构和性能的影响。组成（wt.%）65Kh17N2–35FKh800、65Kh13M2–35FKh800 和 65Fe–35FKh800 的样品是通过在 1150–1270°C 范围内单次压制和烧结制备的，包括等温保持 30 分钟。混合物在球磨机中在酒精中初步研磨 72 小时。高碳 FKh800 铬铁粉 (8.6 wt.% C) 通过大块材料的机械研磨制备。使用 REM-106I 扫描电子显微镜研究样品的微观结构。发现碳化物钢的结构从两相（当使用铁粉时）变为三相（当使用 Kh13M2 和 Kh17N2 铬钢粉时）。基体相的组成对硬质合金钢的密度和硬度影响不大，但稍微增加了 Kh13M2 基体复合材料的弯曲强度。通过对金刚石砂轮的干轴-平面摩擦来测试材料的耐磨性。具有铁基体的硬质合金钢的质量磨损是具有 Kh13M2 和 Kh17N2 基体的碳化物钢的 2.1-2.4 倍。腐蚀测试采用加速方法进行，其中将样品定期浸入 20% HNO 3 溶液中。含有铁和 Kh13M2 和 Kh17N2 铬钢基体的样品在硝酸溶液中表现出耐受性。