Trends In Tool Coating Technology Vacuum coating technology did not take long to start and it was only in the 1960s that CVD (Chemical Vapour Deposition) technology was applied to cemented carbide tools internationally. As the technology needs to be carried out at high temperatures, the coating type is single and the limitations are great, therefore, its development is not poor at the beginning. PVD coating technology, on the other hand, has two characteristics: low temperature and high energy, and can be applied to almost any substrate, so it is not surprising that the range of applications is very wide. The development of vacuum coating technology has also seen the emergence of new technologies such as PCVD (physical chemical vapour deposition) and MT-CVD (medium temperature chemical vapour deposition), and a variety of coating equipment and coating processes have emerged, and there is now a pleasing scene of a hundred flowers blossoming in this field.
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