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The processing of niobium alloy in microgravity in space involves a series of complex experimental processes, mainly using microgravity conditions to overcome some limitations on Earth. The following are the key steps and principles of niobium alloy processing:

Processing environment

Advantages of microgravity: In space, due to the lack of gravity, the molten state of niobium alloy does not require a container, which can avoid the introduction of impurities and the uneven distribution of materials. This feature makes the processing of niobium alloy more precise and efficient.

Experimental steps

Sample preparation: Since 2021, the research team has sent niobium alloy samples to the Chinese space station in batches for related experiments. These samples were transported to the space station for testing by the Tianzhou cargo spacecraft.

Heating and melting: In a microgravity environment, the research team heated the niobium alloy to a molten state. Since the melting point of niobium exceeds 2400 degrees Celsius, it is difficult to achieve this temperature in ground experiments, while the conditions in space allow this process to proceed smoothly.

Cooling and solidification: After melting, the niobium alloy is cooled and supercooled, and finally solidified into the desired form. This process is carried out in a microgravity environment, which can better control the microstructure and macromorphology of the material.

Performance testing: After solidification, the research team measured the thermophysical properties of the niobium alloy to evaluate its performance under extreme high temperatures. These test results are crucial for the future application of materials.

Application prospects

Niobium alloy is expected to be widely used in fields such as spacecraft, rockets and fighter engines due to its excellent high temperature resistance and good plasticity. This material can not only withstand extreme temperatures, but also has excellent processing performance, which is an important breakthrough in the aerospace industry.