Tu Mingjing's Important Achievements

From 1. 1989 to 1993, we have successively undertaken and completed the application basic research project of Sichuan Science and Technology Department, the provincial key science and technology project, and the research and application of composite plastic permanent magnets for micro and special motors, and obtained two invention patents. The research results were successfully industrialized in Chengdu Yinhe Composite Material Factory, with an output value of over 300 million yuan in 2002. A low-cost and low-neodymium nanocrystalline NdFeB exchange-coupled permanent magnet material was developed, which passed the provincial appraisal and won the second prize of Sichuan Science and Technology Progress in 2000.

2. The Nd-free mixed rare earth metal LPC after extracting Ce and Nd from Sichuan was first put forward at home and abroad, and the hydrogen storage alloy and Ni-MH power battery with low cost and excellent performance at room temperature and low temperature were developed. Through provincial appraisal, some achievements won the second prize of 200 1 General Armament Department for Scientific and Technological Progress.

3. Actively organize the research on room temperature magnetic refrigeration materials and magnetic refrigeration prototypes. The Gd series quaternary room temperature magnetic refrigeration materials independently developed have passed the provincial appraisal, and the invention patents have been declared, and the research progress from tracking to leapfrogging has been made, which is of great significance for preparing high-performance and low-cost room temperature magnetic refrigeration materials with domestic raw materials. The new research progress of room temperature magnetic refrigeration materials was rated as one of the top ten science and technology news of rare earth in China in 2002.

4. Nonferrous metal LPC master alloy series has been successfully developed. Compared with the traditional cerium-rich rare earth master alloy, LPC series master alloy has lower price and similar properties, but it has better hydrogen removal, refined structure and reduction ability. It can be widely used in metallurgical machinery to treat steel and non-ferrous alloys such as aluminum, zinc and copper, and has passed the appraisal to realize the transformation of results.

5. Invented a new method for preparing high-purity rare earth oxides (lanthanum oxide, praseodymium, cerium, neodymium and other oxides) by solid-state mechanochemical reaction; High-efficiency inorganic rare-earth composite antibacterial agent and rare-earth doped nano-modified ZnO pressure-sensitive ceramics were developed, and the multi-element composite nano-ZnO pressure-sensitive ceramics won the second prize of scientific and technological progress of Xinjiang Autonomous Region government.

His two research achievements "Room temperature magnetic refrigeration materials" and "Nd-free rare earth series Ni-MH power batteries" were selected into the top ten rare earth science and technology news in 2002 and 2003 respectively. Under the guidance of Tu, a large number of outstanding talents such as master's degree, doctor's degree and postdoctoral degree have been trained. Prior to this, they successively undertook two 863 projects of rare earth functional materials, nano-materials, composite materials and their applications, as well as eight national tenth five-year plan nuclear energy technology development, national natural science foundation, doctoral program fund, provincial and ministerial key scientific and technological projects and enterprise horizontal projects, and applied for national invention patents 13, among which five were authorized by the national invention patents.

More than 100 graduate students and 19 doctoral students have been trained.