The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 04, 1997
Filed:
Jan. 26, 1996
Applicant:
Inventors:
Udo Konig, Essen, DE;
Ralf Tabersky, Bottrop, DE;
Assignee:
Widia GmbH, Essen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23B / ; C23C / ; C23C / ; C23C / ;
U.S. Cl.
CPC ...
407118 ; 82-111 ; 427576 ; 51309 ; 428408 ; 428702 ; 407119 ;
Abstract
In order to improve the wear characteristics of tools with diamond cutting edges, it is proposed to coat the diamond body with a 0.5 to 6 .mu.m thick layer of at least one oxide of the metals zirconium and/or yttrium and/or magnesium and/or titanium and/or aluminum, preferably aluminum oxide. The coating is deposited from the gas phase at gas-phase temperatures up to 800.degree. C. Preferably the pulse-plasma CVD process is used for the coating. The diamond tools so coated are particularly suited for chip-forming machining of carbon-affinitive materials, such as iron-containing materials or steel.