Tongyang Li

Title: Innovations of Inventor Tongyang Li

Introduction

Tongyang Li is a notable inventor based in Lanzhou, China. He has made significant contributions to the field of materials science, particularly in the development of silicon nitride ceramics. With a total of three patents to his name, Li's work showcases his expertise and innovative spirit.

Latest Patents

One of Tongyang Li's latest patents is focused on a silicon nitride ceramic sintered body and its preparation method. This invention details a silicon nitride ceramic sintered body that includes a sintered bulk and a hard surface layer with a thickness ranging from 10 to 1000 μm. The sintered bulk comprises a first silicon nitride crystalline phase and a first grain boundary phase, while the hard surface layer consists of a second silicon nitride crystalline phase and a second grain boundary phase. The first grain boundary phase contains a metal tungsten phase, which may include tungsten elementary substance and/or a tungsten alloy. Additionally, the second grain boundary phase is made up of tungsten carbide particles. The patent specifies that the tungsten element in the metal tungsten phase accounts for 80-100 wt % of the total tungsten element in the first grain boundary phase, and the tungsten element in the tungsten carbide particles accounts for 60-100 wt % of the total tungsten element in the second grain boundary phase. Another aspect of his patent emphasizes that the silicon nitride ceramic sintered body has a silicon nitride crystalline phase content of not less than 98 wt %, a relative density of not less than 99%, and a porosity of not larger than 1%.

Career Highlights

Throughout his career, Tongyang Li has worked with esteemed organizations such as the Yantai Zhongke Research Institute of Advanced Materials and Green Chemical Engineering and the Shandong Laboratory of Yantai Advanced Materials and Green Manufacturing. His experience in these institutions has allowed him to refine his skills and contribute to groundbreaking research in advanced materials.

Collaborations

Tongyang Li has collaborated with notable colleagues, including Zhuhui Qiao and Lujie Wang. These partnerships have further enhanced his research and development efforts in the field of materials science.

Conclusion

Tongyang Li's innovative work in silicon nitride ceramics has positioned him as a significant figure in materials science. His patents reflect a commitment to advancing technology and improving material properties.