第八章 硬质膜

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1、HSS30GPa结合力：结合力：60N5mmWC球，球，40N加载，加载，200mm/s,1小时无明显小时无明显磨损磨损与与TiN比，比，CrTiAlN钻孔钻孔数可多数可多1倍左右倍左右CrTiAlNWorkpiece Material: Plain Carbon Steel (EN9) 190 HVTool: Tungsten Carbide Drills (6.4 mm )CoatingNumber of HolesCrTiAlN328Uncoated 73185rpm (64m/min) & 0.30mm/rev lubricated: 7.5% oil concentrated wat

2、er based coolantHoles: Through (19mm deep)Drilling PerformanceCrTiAlNWorkpiece Material: Alloy Steel EN24 363HVTool: High Speed Steel (1/4” drills) Holes: Through (12.6 mm deep)2440rpm (48.7m/min) & 0.11mm/rev & 268mm/min lubrication: 7.5% oil concentrated water based coolantCoatingNumber of HolesCr

3、TiAlN232Uncoated 0Drilling PerformanceCrAlTiN Cr/Ti在相当宽范围在相当宽范围 内稳定的硬度、结合力内稳定的硬度、结合力 PoD, 5 mm WC/Co ball, 200 mms-1CrTiAlN Cr/Ti在相当宽范围在相当宽范围 内稳定摩擦磨损性能内稳定摩擦磨损性能 UncoatedCommercial TiNCrTiAlNCrTiAlN+MoSTS1S2S3S4050100150200250300350No. Holes CompletedHV153HV147HV144104132174183205226288345Hardness(HV

4、) of EN9Test BlockDrilling Speed:4050 rpm, (equivalent to 80m/min) Feed: 945mm/min Conditions: Through hole, 20mmCoolant: Cimstar MB603, 5%, Drill testSamplesOne foldTwo foldThree foldCrAlTiCr Coating Deposition- CFUMSIP - 1 Ti, 1 Al, 2 Cr- Ar- N2 OEM control loopDeposition ProcessCrTiAlN多层膜多层膜复合的方法

5、除多复合的方法除多元外可形成多层，元外可形成多层，层厚可降至纳米，层厚可降至纳米，成为成为纳米调幅结纳米调幅结构。构。TiN/NbN多层多层5nmCrTiAlN 镀程序 CrNCrTiAlNSubstrate 高速钢基体高速钢基体1200 目抛光目抛光Cr bond layer0.2 m Cr底层底层Graded layer0.3 m CrTiAlN梯度层梯度层Nanolayers4 m CrTiAlN多层多层, ,其中其中10nm 15nm, CrN层层 6.0nm25nmQuelle: A: Matthews, University of Hull, UKA. Matthews, Univ