Invention Grant
- Patent Title: Hard-material-coated bodies and method for their production
- Patent Title (中): 硬质材料涂层体及其生产方法
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Application No.: US11922865Application Date: 2006-07-04
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Publication No.: US07767320B2Publication Date: 2010-08-03
- Inventor: Ingolf Endler
- Applicant: Ingolf Endler
- Applicant Address: DE München
- Assignee: Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung E.V.
- Current Assignee: Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung E.V.
- Current Assignee Address: DE München
- Agency: Collard & Roe, P.C.
- Priority: DE102005032860 20050704
- International Application: PCT/EP2006/063881 WO 20060704
- International Announcement: WO2007/003648 WO 20070111
- Main IPC: B32B9/00
- IPC: B32B9/00 ; C23C16/34

Abstract:
The invention relates to hard-coated bodies with a single- or multi-layer system containing at least one Ti1-xAlxN hard layer and a method for production thereof. The aim of the invention is to achieve a significantly improved wear resistance and oxidation resistance for such hard-coated bodies. Said hard-coated bodies are characterised in that the bodies are coated with at least one Ti1-xAlxN hard layer, generated by CVD without plasma stimulation present as a single-phase layer with cubic NaCl structure with a stoichiometric coefficient x>0.75 to x=0.93 and a lattice constant afcc between 0.412 nm and 0.405 nm, or as a multi-phase layer, the main phase being Ti1-xAlxN with a cubic NaCl structure with a stoichiometric coefficient x>0.75 to x=0.93 and a lattice constant afcc between 0.412 nm and 0.405 nm, with Ti1-xAlxN with a wurtzite structure and/or as TiNx with NaCl structure as further phase. Another feature of said hard layer is that the chlorine content is in the range of only 0.05 to 0.9 atom %. The invention further relates to a method for production of the body, characterised in that the body is coated in a reactor at temperatures from 700° C. to 900° C. by means of CVD without plasma stimulation with titanium halides, aluminium halides and reactive nitrogen compounds as precursors, mixed at elevated temperatures. Said coating can be applied to tools made from steel, hard metals, cermets and ceramics, such as drills, millers and indexable inserts.
Public/Granted literature
- US20090123779A1 Hard-Material-Coated Bodies and Method for Their Production Public/Granted day:2009-05-14
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