Aluminum nitride ceramic parts, this high-tech green material, with its excellent performance, is gradually becoming an indispensable high-quality material in various fields. Its hardness is second only to diamond, which is amazing. According to the test report data, the hardness of aluminum nitride ceramic parts is greater than 9, while the hardness of diamond is defined as 10. The hardness of the crystal is about 7, and obviously, the hardness of aluminum nitride ceramic pieces is superior.
Let's take a closer look at aluminum nitride ceramic parts. Its molecular weight is about 12322, the theoretical density is as high as 589g cm3, the melting point also reached an astonishing 2715. In terms of crystal morphology, there are three types of aluminum nitride ceramic parts: monoclinic, tetragonal, and cubic crystalline phases. At room temperature, aluminum nitride ceramics mainly exist in monoclinic phase. When heated to about 1100, it transforms into a tetragonal phase. If it continues to be heated to a higher temperature, it will be converted to a cubic phase.
The advantages of aluminum nitride ceramic parts are not only reflected in the hardness, but also have the advantages of high strength, wear resistance, no oxidation, no rust, acid and alkali resistance, and anti-static. In particular, aluminum nitride ceramic parts do not react with food, which makes it widely used in the field of catering knives. At the same time, its knife body is as shiny as jade, which makes people love it.
At present, the main aluminum nitride ceramic parts on the market include: aluminum nitride ceramic table knives, scissors, razors, scalpels, etc. In addition, aluminum nitride ceramic parts have been successfully used in heating elements and equipment under oxidizing atmosphere above 2000, and electrode materials for magnetofluid power generation are also being actively studied.
When inspecting aluminum nitride ceramic parts, we need to pay attention to the following points:
1. Observe whether the hardness of aluminum nitride ceramic parts meets the standard, how the wear resistance is, as well as the size of thermal conductivity, chemical stability and corrosion resistance;
2. Test the fire resistance of aluminum nitride ceramic parts, at least 1000 degrees Celsius high temperature;
3. Ensure that aluminum nitride ceramic parts have good chemical stability, especially high corrosion resistance at high temperatures;
Fourth, the density of aluminum nitride ceramic parts should be high, and the biocompatibility should also be good;
5. Because aluminum nitride ceramics are non-metallic materials without electrodes, their melting points can basically reach more than Celsius, and they have high refractory performance.
In general, aluminum nitride ceramic parts are a material with extremely high application value, and its excellent performance brings unprecedented convenience to various fields. With the continuous development of science and technology, it is believed that the application range of aluminum nitride ceramic parts will be more extensive, bringing more surprises to human society.