At 17:27 on May 3rd, the SJTU Siyuan 2 (ICUBE-Q) lunar exploration satellite developed by Shanghai Jiao Tong University was successfully launched along with the Chang'e-6 lunar exploration mission. The Siyuan-2 lunar exploration satellite is the first nanosatellite level (i.e. a small satellite weighing less than 10kg) deep space exploration satellite mission in China. The total weight of the satellite is only 6.5 kilograms, with a total carrying weight of 9 kilograms. It is the first lunar exploration satellite weighing less than 10 kilograms in China, the first deep space exploration nanosatellite for domestic universities, and the first deep space exploration satellite for Jiaotong University.

Atomic oxygen corrosion and single particle flipping in space are the main failure forms of satellite components, especially single particle flipping, which is a killer of cosmic ray induced downtime and will cause incalculable errors in the calculation results of satellite electronic components. Professor Zeng Xiaoqin's team from Shanghai Jiao Tong University faced the challenge of space corrosion and innovatively developed stainless magnesium alloy, which has the characteristics of lightweight, high strength, corrosion resistance, electromagnetic shielding, etc. The electric control box shell made of stainless magnesium alloy reduces weight by 30% compared to traditional aluminum alloy, and has excellent high-energy particle absorption and resistance to atomic oxygen corrosion, effectively ensuring the long-term safe service of satellite electronic systems, achieving the first application of high-performance lightweight magnesium alloy in China's satellite electronic control system.