Research on a New Synthesis Technology of La-Mg-Ni System Alloys and Microstructure of La0.67Mg0.33Ni3.0 Alloys

By choosing chemical reagents containing La, Mg, Ni element respectively as raw materials, the precursor of three-element composite metal oxides was prepared at first. With the experimental parameters optimized, research on preparation of La-Mg-Ni system alloys with a new synthesis technology based on co-precipitation and reduction-diffusion, and microstructure of La0.67Mg0.33Ni3.0 alloys, was carried out. And the feasibility of this new synthesis technology has been verified. The results show that the alloys prepared through co-precipitation and reduction-diffusion have a multi-phase structure, their structure and ingredients are even, and their lattice distortion is small. In addition, the reducing process is relatively thorough and the content of oxygen is rare, achieving the expected results. The new synthesis technology is feasible, but it is necessary to optimize the process.