Most ceramic products are white, and alumina ceramics are no exception. However, after a period of use, these ceramics will gradually change from white to yellowish. So, why do alumina ceramics change color?Next, I will explain the reasons for this.
First of all, one reason for the discoloration of alumina ceramics is the exposure to sunlight. Ultraviolet and visible light in sunlight can cause changes in the internal composition of alumina ceramics, which can lead to a change in color. This change is irreversible, so once it happens, the color will continue to change.
Secondly, alumina ceramics may deliquescent, producing hydrated alumina, which is also one of the causes of discoloration. In fact, this phenomenon can occur not only in ceramic products, but also in other materials. Therefore, we can only minimize the influence of external factors on alumina ceramics to overcome the discoloration.
In addition to understanding the causes of discoloration of alumina ceramics, we also need to grasp some basic principles for making shaft cores to ensure that the manufactured products meet the requirements and can be used normally.
Considering the particularity of alumina ceramics, more care needs to be taken when designing alumina ceramic shaft cores to reduce unnecessary damage. The main contents include the type, size and position of the installation parts, the fixing mode of the parts, the nature, direction, size and distribution of the load, as well as the type and size of the alumina ceramic bearing, the manufacturing and assembly process of the blank, installation and transportation and a series of factors.
In the design process, it must be designed according to the specific requirements of the alumina ceramic shaft, but on the premise of saving materials and reducing weight, the cross-sectional shape with large dimensions of equal strength should be used as much as possible. At the same time, various structural measures should be taken to reduce stress concentration and improve strength to further ensure the quality and performance of products.
In conclusion, understanding the causes of discoloration of alumina ceramics is essential for making high-quality ceramic products. By mastering the basic principles of shaft making, we can reduce the occurrence of discoloration and ensure the stability and reliability of our products.