High-speed and Low Temperature Coating of α-Al_2O_3 on Cutting Tools by Laser CVD

摘要

α-Al_2O_3 coating is essential for cutting tools to improve performance and to elongate the lifetime. The low-temperature deposition of α-Al_2O_3 films enables one to expand wide applications of Ti (C, N) -based cermet cutting tools. Laser chemical vapor deposition (LCVD) can coat α-Al_2O_3 films directly on Ti(C, N) materials at low temperature and high deposition rate, which has never been attained by conventional coating techniques.