On July 23, 020, China’s first Mars probe "Tianwen-1" was successfully launched into space. The "Tianwen-1" probe became another major space exploration project in China after the "Chang'e series" lunar exploration mission. .
On July 31, 2020, China's "Beidou-3" global satellite navigation system was officially opened, marking the complete completion of China's independent construction and independent operation of the global satellite navigation system. From "Tianwen No. 1" to "Beidou No. 3", many scientific research achievements of SHJD State Key Laboratory of Metal Matrix Composites have contributed to China's spaceflight, and science and technology have boosted the development of my country's planetary exploration and satellite navigation.
SiC particle reinforced aluminum matrix composite
In order to meet the special requirements of the Beidou satellite for the comprehensive performance of a key mechanism material, the team of Professor Zhang Di and Ouyang Qiubao of the State Key Laboratory of Metal Matrix Composites has developed a high-performance, high-quality SiC particle reinforced aluminum matrix composite material. A certain system of the Beidou satellite provides more than 10 key components and has been successfully applied to multiple Beidou navigation satellites, which not only realizes the lightweight structure, but also guarantees the high precision of the mechanism and the stable operation of the system.
The high-performance SiC particle-reinforced aluminum-based composite case developed by the team of Professor Zhang Di and Professor Ouyang Qiubao was successfully applied to the "Tianwen-1" satellite, which met the satellite's material requirements for a key mechanism. More than 30 pieces were delivered. Products made of materials have light weight, high strength, good rigidity, small deformation under the action of external force, and stable dimensions in a wide temperature range, which helps "Tianwen No. 1" to carry out Mars exploration.
The team of Professor Zhang Di and Ouyang Qiubao has been deeply involved in aluminum-based composite materials for more than 30 years, and has solved various key scientific and technical problems in the preparation, molding and engineering application of aluminum-based composite materials. The high-performance SiC particles developed Reinforced aluminum-based composite materials have been widely used in aerospace, electronic information and transportation fields.
High strength and toughness aluminum alloy material
The "Tianwen No. 1" satellite also applied the high-strength and high-toughness aluminum alloy material developed by the SHJD State Key Laboratory of Metal Matrix Composite Materials by Zhang Hao's team. The material satisfies the "Tianwen No. 1" demand for structural light weight, and delivered more than 80 The products made of new materials are light in weight, high in strength, and good in toughness. They are used in storage tanks and buffer mechanisms to reduce weight by 40%, which played a key role in the smooth development of "Tianwen No. 1".
After nearly 30 years of exploration and practice, the aluminum alloy material developed by Zhang Hao's team in spray forming materials has broken the foreign technology blockade and provided high-performance alloy materials for aerospace and other industries.
The Beidou satellite navigation system is China’s first major space infrastructure to provide public services to the world, and "Tianwen-1" is an important step for China to move toward deep space. These important marks in the history of China’s aerospace testify the participation of SHJD research The high level and quality of the results.