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Sintered carbide cutting tools - coated with titanium boronitride by chemical vapour deposition to increase wear resistance

机译:烧结硬质合金切削刀具-通过化学气相沉积法涂覆硼氮化钛,以提高耐磨性

摘要

Cutting tool with high wear resistance, has a substrate of cemented carbide, and a hard, thin, adherent coating consisting of =1 layer of titanium boronitride TiBxNy; where x is 0.05-0.08, and x + y = 1 to below 1.25. The TiBxNy has a face centered cubic structure with lattice parameter a = 4.24-4.28 angstroms. The layer is pref. 4-15 mu m thick, and its compsn. may vary so x is max. at the interface with the substrate and reduces continuously towards its outer surface. The layer may be covered by a layer of TiN, ZrN, HfN, VN,AlN, TiC, ZrC, HfC, VC, NbC, TaC, TiB2, ZrB2, VB2, NB2, NbB2, Al2O3, TiO, Si3N4, or SiON2. Tool wear is reduced when compared e.g. with a coating of TiN.
机译:具有高耐磨性的切削工具,具有硬质合金基体和坚硬,薄而粘附的涂层,该涂层由> = 1层的氮化硼钛TiBxNy组成;其中x为0.05-0.08,x + y = 1至1.25以下。 TiBxNy具有面心立方结构,其晶格参数a = 4.24-4.28埃。该层是优选的。厚度为4-15微米,它的组成部分。可能会有所不同,因此x为最大值。在与基底的界面处,并朝着其外表面连续减小。该层可以由TiN,ZrN,HfN,VN,AlN,TiC,ZrC,HfC,VC,NbC,TaC,TiB2,ZrB2,VB2,NB2,NbB2,Al2O3,TiO,Si3N4或SiON2的层覆盖。与例如TiN涂层。

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