Table 2 Main coating process development period and application time Time-coating composition-coating method-main application field 1968-TiC, TiN-CVD-hard alloy tool, mold coating 1973-TiCN, TiC+Al2O3- CVD-Carbide Tool, Mold Coating 1979-TiN-PVD-High Speed ​​Steel Tool Coating 1981-TiC+Al2O3+TiN, Al-ON-CVD-Carbide Tool Coating 1982-TiCN-MT- CVD-Carbide Tool Coating 1984-TiCN-PVD-Carbide, High Speed ​​Steel Milling, Drill Tool Coating 1986-Diamond, CBN-CVD, PVD-Carbide Tool Coating 1989-TiAlN -PVD-Carbide Milling Cutter Coating (for steel and cast iron processing)
1990 - TiN, TiCN, TiC-PCVD-die, thread cutter, milling cutter, etc. 1991 - TiAlN+CrC-PVD-car, milling titanium alloy 1993-TiN+TiCN(CVD)+TiN(PVD)-CVD+ PVD-Carbide Milling Tools 1993-CrN-PVD-Titanium Alloy, Copper Alloy Processing 1994-MoS2-PVD-High Speed ​​Steel Complex Tool Coating 1995-TiN-AlN-PVD-Carbide Milling Blade Coating Layer 1996 - Thick film fibrous TiCN-MT-CVD-Carbide turning tool coating (for rough, semi-finishing)
1996-CNx-CVD, PVD-High Speed ​​Steel Tool Coating 2000-TiAlCN-PVD-Carbide Blade Coating The current development of world coating technology has the following trend: it is difficult to meet the comprehensive mechanical properties of the tool due to the single coating material. Requirements, so the coating composition will tend to be diversified and composite; in order to meet different cutting processing requirements, the coating composition will be more complicated and more targeted; in the composite coating, the thickness of each single component coating It will become thinner and thinner, and will gradually become nano-sized; the coating process temperature will be lower and lower, and the tool coating process will develop in a more reasonable direction. It is expected that PVD and MT-CVD processes will become mainstream technologies.
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