公开(公告)号：US20120202032A1

公开(公告)日：2012-08-09

申请号：US13364748

申请日：2012-02-02

申请人： Sho TATSUOKA ,  Kohei TOMITA ,  Akira OSADA ,  Eiji NAKAMURA

发明人： Sho TATSUOKA ,  Kohei TOMITA ,  Akira OSADA ,  Eiji NAKAMURA

IPC分类号： B32B9/04 ,  B32B5/18

CPC分类号： C23C30/005 ,  Y10T428/24975

摘要： A surface-coated cutting tool, which has a hard-coating layer with excellent chipping and fracturing resistances in a high speed intermittent cutting work, is provided. The surface-coated cutting tool includes a cutting tool body, which is made of WC cemented carbide or TiCN-based cermet, and a hard-coating layer, which is vapor deposited on the cutting tool body and has a lower layer and an upper layer. The lower layer is a Ti compound layer, and the upper layer is an aluminum oxide layer. There is a micropore-rich layer in the lower layer in the vicinity of the interface between the lower and upper layers. There are micropores with diameters of 2 to 70 nm in the micropore-rich layer. The diameters of the micropores in the micropore-rich layer shows a bimodal distribution pattern.

摘要翻译： 本发明提供了一种具有在高速断续切削加工中具有优异的切削和耐断裂性的硬涂层的表面涂层切削工具。 表面涂层切削工具包括由WC硬质合金或TiCN基金属陶瓷制成的切削工具主体和气相沉积在切削工具主体上并具有下层和上层的硬涂层 。 下层为Ti化合物层，上层为氧化铝层。 在下层和下层之间界面附近的下层中有一个富含微孔的层。 在富微孔层中存在直径为2至70nm的微孔。 微孔富含层中的微孔的直径呈双峰分布图案。