Ding Wenjiang, an academician of the Chinese Academy of Engineering and a professor at Shanghai Jiaotong University, has been committed to the research of high-performance magnesium alloy materials.
From flame-retardant magnesium alloys to main load-bearing structural magnesium rare earth alloys, from lightweight structural materials to various functional materials, magnesium alloys are increasingly used in the fields of transportation, electronic information, aerospace, medicine and health, and even agriculture. Applications.
Let "China's high-performance magnesium alloy materials" lead the world
High-performance magnesium alloy is the core of Ding Wenjiang's research for decades.
Lightweight is the pursuit goal of almost all industrial fields, and the economic value of 1 gram of rockets can be comparable to 1 gram of gold. Magnesium has the smallest proportion of practical metal structural materials, only 2/3 of aluminum and 1/4 of steel. What's more rare is that China is still a large country of magnesium, both in reserves and production, accounting for more than 90% of the world.
The development of "high-performance magnesium alloys" is imperative. After repeated experiments, Ding Wenjiang found that by adding two kinds of heavy rare earths, the ignition point of the magnesium alloy can be greatly increased from 520°C to 935°C, and the tensile strength exceeds 500 MPa. The "open-hanging" magnesium alloy has realized a subversive leap from the application of non-load-bearing structural parts to main load-bearing structural parts, and can be used to manufacture helicopter casings and automobile engines.
Nowadays, China's magnesium alloy materials have spread across many fields such as aerospace, defense industry, energy, and medical care.
Continuously open up the application boundary of "high-performance magnesium alloy"
In addition to being light, magnesium can also be used as a solid-state storage for hydrogen. The magnesium-based hydrogen storage material developed by Ding Wenjiang's team can store hydrogen in a solid state and then release it under certain conditions. This storage and release is the hydrogen fuel cell. Take drones as an example. In the past, the flight time of drones was only half an hour at a time, but now it can be extended to 4 to 6 hours and can fly 300 kilometers in one breath.
In an exchange with a doctor, Ding Wenjiang noticed that many patients with fractures or heart diseases had metal stents buried in their bodies after their bodies recovered. Many people had to endure the second pain before removing the stents after surgery. His inspiration flashed: Magnesium is both degradable and a beneficial element needed by the human body. Can magnesium alloy replace traditional medical metal stents? Therefore, he immediately led the team to develop a new generation of controlled degradation of medical magnesium alloys. After a year, he finally developed an internationally advanced level of endophyte equipment and cardiovascular prototypes. At present, animal experiments have been successful. 16 human clinical trials of magnesium alloy bone nail products have been carried out, all of which have been successful.