SGER: Synthesis and Consolidation of Nickel Aluminide Powder

SGER赠款的重点是基于机械研磨的新加工技术，该技术涉及研磨过程中的化学反应。该方法消除了通常需要从副产物盐中分离金属的传统浸出过程。该方法包括引入铝作为还原剂，代替Mg、Ca或Na。起始原料是金属氯化物，副产物氯化铝可以通过真空蒸馏代替浸出来分离，从而消除通常提到的表面氧化。将在从氯化镍和铝开始加工铝化镍时检查概念验证。所得粉末通过在略微高温下压制而固结，这将导致细粒合金。采用这种新方法生产NiAl，由于加工温度低和副产品有价值，因此具有很高的成本效益。该技术一旦得到证实和确立，将适用于作为高温结构材料广泛应用的其他铝化物。在机械化学反应过程中使用Al作为还原剂的新技术消除了通常需要的第二步浸出，这通常会导致表面氧化。该方法一旦被证明是有效的，可以用于加工许多其他金属合金，具有上级的纯度沿着大幅降低成本。

The focus of the SGER grant is on a new processing technique based on mechanical milling that involves chemical reaction during milling process. The method eliminates the traditional leaching process that is usually required to isolate the metal from by-product salts. The process involves introducing aluminum as a reducing agent, in place of Mg, Ca or Na. The starting material is metal chloride and the by-product aluminum chloride can be separated by vacuum distillation in lieu of leaching thereby eliminating the usually noted surface oxidation. The proof-of-concept will be checked in processing nickel aluminide starting from nickel chloride with aluminum. The resulting powder is consolidated by pressing at slightly high temperatures that will result in fine-grained alloy. The production of NiAl by this new method will be very cost-effective because of the low processing temperature and the valuable by-product. The technique once proven and established will be applicable for other aluminides that find extensive application as high-temperature structural material.The new technique of using Al as a reducing agent during mechanochemical reaction eliminates the usually required second step of leaching that in general results in surface oxidation. This process once proven effective can be adopted for processing of many other metal alloys with superior purity along with substantial cost reduction.