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2023
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Application of Diamond Coatings on Cemented Carbide Cutting Tools
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Cemented carbides, owing to their superior toughness, hardness, wear resistance, and corrosion resistance, have become a widely used tool material in various machining applications, particularly in the aerospace, aviation, and automotive industries. With the rapid advancement of military and industrial sectors and the ever‑increasing demands of the global market for cemented‑carbide cutting tools, surface modification of these tools to achieve enhanced physicochemical properties has remained a key research focus. Such efforts aim to leverage these advancements to expand the application of diamond coatings in precision machining.
Application of Diamond Coatings on Cemented Carbide Cutting Tools
Cemented carbides, owing to their superior toughness, hardness, wear resistance, and corrosion resistance, have become a widely used tool material in various machining applications, particularly in the aerospace, aviation, and automotive industries. With the rapid advancement of military and industrial sectors and the ever‑increasing demands of the global market for cemented‑carbide cutting tools, surface modification of these tools to achieve enhanced physicochemical properties has remained a key research focus. Such efforts aim to leverage these advancements to expand the application of diamond coatings in precision machining.
As one of the hardest materials, diamond—boasting a high thermal conductivity, a low coefficient of thermal expansion, and a low coefficient of friction—has emerged as an exceptionally ideal cutting tool material. However, natural diamond is not only difficult to extract but also prohibitively expensive, making it unsuitable for widespread market adoption. Consequently, synthetic diamond has become the preferred choice for diamond coatings on cemented carbide tools, owing to its lower cost, longer service life, superior machining accuracy, ability to overcome limitations imposed by certain complex‑shaped substrates, and relatively mature manufacturing processes. In this way, cemented carbide tools equipped with diamond coatings combine the intrinsic advantages of diamond with the excellent impact resistance and toughness characteristic of cemented carbide, and have thus become one of the primary focuses of both production and research worldwide.
Currently, Uniplasma has conducted extensive research on diamond coatings deposited on cemented carbide substrates, and many methods and processes have already been put into production. In addition, a wide range of techniques are available for characterizing structure and properties; different preparation methods and processes give rise to variations in their intrinsic structure and performance. We are also continuously pursuing systematic studies on the relationships among structure, overall performance, and process parameters.
Diamond coating
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