Nickel Base Complex Nanophase Materials

本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、Ni基合金、Ni与分散氧化物、Ni/Al金属间化合物、NiO和Ni/NiO复合材料。采用超高真空合成系统，在可控条件下制备金属、金属间化合物和氧化物分散增强前驱体粉末颗粒。第二种系统用于NiO和Ni/NiO复合材料。在不将样品暴露于环境条件下即可实现压实和致密化。重点介绍了微结构的合成、加工和表征。性能测量用于指导加工变量的控制。这项研究的目的是利用独特的加工技术开发新的和改进的金属基材料。预计这种材料可以在需要高机械性能的设备中使用。

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.