On the lunar surface, temperature is a very important factor to consider, as the temperature range on the lunar surface is very wide, from high temperatures during the day to extremely low temperatures at night.
During the day, the surface temperature of the moon can reach very high values, even reaching several hundred degrees Celsius. Depending on the specific daytime location, season, and terrain, the temperature may vary between 40 degrees Celsius and 400 degrees Celsius.
At night, the temperature on the surface of the moon will sharply decrease, reaching very low values. The moon does not have an atmosphere to maintain heat, and its surface radiation causes a decrease in temperature at night. On lunar nights, temperatures can drop to near zero degrees Celsius or even lower.
Due to the extreme temperature changes on the lunar surface, the application of ceramic bearings requires the selection of ceramic materials that can withstand this wide temperature range and special design and optimization.
Some special ceramic materials, such as zirconia ceramics (ZrO2), typically have good high and low temperature properties, making them a choice for applications on the lunar surface.
However, although ceramic materials have good temperature resistance, specific evaluations and verifications still need to be conducted based on specific circumstances. When using ceramic bearings in lunar missions, special consideration needs to be given to the impact of temperature changes on the bearings, such as temperature shock, thermal expansion and contraction.
Therefore, when designing and selecting ceramic bearings for lunar missions, it is necessary to conduct sufficient engineering analysis and validation, and draw on the experience and suggestions of professional engineers or suppliers to ensure the reliability of bearings under various temperature conditions.
