The pure iron and aluminum powders were milled with 3[Formula: see text]wt.% and 7[Formula: see text]wt.% of alumina nanoparticles in planetary ball mill in order to produce iron aluminide by mechanical alloying technique. The resulting powder mixture was sintered after the formation of iron aluminide by spark plasma sintering (SPS) method to achieve specimens with the highest densification. SPS technique was utilized on specimens under the condition of 40[Formula: see text]MPa pressure at 950∘C for 5[Formula: see text]min. The microstructures were analyzed after sintering using scanning electron microscopy and EDS analysis. The results indicated that the aluminide iron phase has been produced at high purity. The sintered specimens were treated under hardness and density tests, and it was characterized that the specimen included 3[Formula: see text]wt.% of alumina nanoparticles had the highest microhardness. Likewise, it was revealed that the unreinforced sample had a maximum relative density. The wear behavior of specimens was performed at 600∘C. The results of weight loss showed after 1000[Formula: see text]m of wear test, the weight loss of unreinforced specimen was reduced up to 0.21[Formula: see text]g while the specimen with 3[Formula: see text]wt.% of alumina nanoparticle indicated the lowest weight loss about 0.02[Formula: see text]g. The worn surfaces were evaluated by scanning electron microscopy which indicated that the main wear mechanism at high temperature included adhesive wear and delamination.

中文翻译：

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氧化铝纳米粒子添加对Spark等离子烧结法金属间铝化铁高温磨损行为的影响

为了通过机械合金化技术生产铝化铁，将纯铁和铝粉与3[公式：见正文]wt.%和7[公式：见正文]wt.%的氧化铝纳米颗粒在行星式球磨机中研磨。在通过放电等离子烧结 (SPS) 方法形成铝化铁后，对所得粉末混合物进行烧结，以获得最高致密化的样品。SPS 技术在 40 [公式：见正文]MPa 压力下在 950∘C 为 5 [公式：见正文]分钟。使用扫描电子显微镜和EDS分析在烧结后分析微观结构。结果表明，已经以高纯度生产了铝化物铁相。对烧结后的试样进行硬度和密度测试，结果表明试样中含有3[公式：见正文]wt.%的氧化铝纳米粒子具有最高的显微硬度。同样，显示未增强样品具有最大相对密度。试样的磨损行为在 600∘C、失重结果表明，经过1000[公式：见正文]m的磨损试验，未加筋试样的失重减少到0.21[公式：见正文]g，而3[公式：见正文]的试样重量百分比的氧化铝纳米颗粒表明最低重量损失约为 0.02 [公式：见正文]g。通过扫描电子显微镜对磨损表面进行评估，表明高温下的主要磨损机制包括粘着磨损和分层。