Common defects of cemented carbide include the following:
- Hot cracking defects: Cemented carbide is prone to hot cracking at high temperatures. This is because the cobalt in the cemented carbide easily reacts with carbides at high temperatures to form harmful phases, which reduces the toughness of the cemented carbide and leads to hot cracking. .
- Porosity defects: Porosity defects exist in cemented carbide. This is because when preparing cemented carbide, raw materials, intermediate products and final products will be affected by gas, and the density of cemented carbide is not high.
- Grain boundary brittleness: Grain boundary brittleness is also one of the common defects of cemented carbide. Especially at higher temperatures, brittle fractures often occur at the grain boundaries of cemented carbide, thus affecting the performance of cemented carbide.
The above are the common defects of cemented carbide. Understanding these defects can help to better control the production and use of cemented carbide.
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