Tungsten carbide ceramic block is a material made by reacting tungsten powder and carbon powder at high temperature, which can be made into ceramic parts of various shapes and sizes. The following are the main properties of tungsten carbide ceramic blocks:
I. Physical properties
1. High hardness: The hardness of tungsten carbide ceramics is very high. The hardness of pure tungsten carbide ceramics can reach HRA90 or above, second only to diamond and cubic boron nitride. It can be used to make high-hardness knives, drills, cutting tools, etc.
2. High density: The theoretical density of tungsten carbide ceramics is as high as 15.55g/cm³, which makes it advantageous in withstanding pressure and impact.
3. High melting point: The melting point of tungsten carbide ceramics is as high as 2700℃ (some say 2720℃), so it can work in high temperature environments.
II. Chemical properties
1. Good wear resistance: Tungsten carbide ceramics have excellent wear resistance and are one of the most wear-resistant engineering ceramics at present. They can withstand harsh working conditions such as high speed, high temperature, high pressure, and strong corrosion.
2. Anti-oxidation: Tungsten carbide ceramics have certain anti-oxidation properties at high temperatures and can be used for a long time in high temperature environments without being easily oxidized. However, some data also point out that its anti-oxidation properties are relatively poor, which may be related to the specific preparation process and working environment.
3. Chemical stability: Tungsten carbide ceramics are not easily corroded by acids, alkalis, etc. and have good chemical stability.
3. Electrical properties
Tungsten carbide ceramics are an insulating material with poor conductivity, so they can be used to manufacture the insulator part of electronic components.