Designs and applications of nitride coatings to hot metal forming dies
Key Points
The aim is to review designs and applications of nitride coatings for improving die lifespan in metal forming processes.
Reviewed characteristics of monolithic, binary, and laminated nitride coatings.
Analyzed deposition methods including physical vapor deposition (PVD) and chemical vapor deposition (CVD).
Explored applications in hot forming processes of various metal alloys, such as steels and aluminum.
Nitride coatings improve wear resistance and reduce friction at die-workpiece interfaces.
Monolithic, binary, and laminated coatings each offer unique benefits in tribological performance.
Recommendations for coating selection can lead to better performance and longevity of forming dies.
Abstract
Thin film coatings are widely applied to extend the service life of hot metal forming dies by improving wear resistance, reducing friction, and mitigating thermal and chemical damage. Nitride coatings deposited by Physical Vapor Deposition (PVD) and Chemical Vapor Deposition (CVD) methods have demonstrated potential to deal with critical challenges at the die-workpiece interface. This paper reviews the designs and applications of nitride coatings to hot metal forming dies. The discussion begins with the fundamentals and characteristics of monolithic, binary, and laminated coatings, which aim to enhance tribological performance at the interface. It then explores the application of nitride coatings used in the hot forming processes of steels, aluminum alloys, and other metal alloys. Finally, the review concludes with key highlights and recommendations for coatings selection and future research to improve the tribological performance of hot metal forming dies.
Enhanced durability of hot forging tools through hybrid surface treatment combining plasma nitriding with W-Ti-B and W-Ta-B nanocomposite coatings deposited using HiPIMS2026