Nickel Base Complex Nanophase Materials

这项研究工作涉及镍基纳米相合金的合成、加工和表征，包括纯Ni、镍基合金、分散氧化物Ni、Ni/Al金属间化合物、NiO和Ni/NiO复合材料。超高真空合成系统用于在受控条件下生产金属、金属间化合物和氧化物弥散强化前驱体粉末颗粒。第二个系统用于NiO和Ni/NiO复合材料。压实和致密化不会使试件暴露在环境条件下。重点介绍了该材料的合成、加工和微观结构表征。性能测量用于指导工艺变量的控制。%这项研究旨在利用独特的加工技术开发新的和改进的金属材料。预计这种材料可以在需要高机械性能的设备中得到应用。

This research effort involves synthesis, processing and characterization of nickel-base nanophase alloys, including pure Ni, Ni-base alloys, Ni with dispersed oxides, Ni/Al intermetallic compounds, NiO, and Ni/NiO composites. An ultrahigh vacuum synthesis system is used for production of metallic, intermetallic and oxide dispersion-strengthened precursor powder particles under controlled conditions. A second system is used for the NiO and Ni/NiO composites. Compaction and densification are effected without exposing the specimens to ambient conditions. The emphasis is on synthesis and processing and characterization of microstructure. Property measurements are used for guidance in the control of processing variables. %%% This research is aimed at new and improved metal-based materials using unique processing techniques. It is expected that such materials could see use in devices where high mechanical performance is essential.