Deposition of Nanoscopically Smooth DLC Tool Coatings for Dry Forming of Aluminum Sheets

Recent investigations demonstrated the applicability of diamond-like carbon (DLC)-coated tools for dry forming of aluminum, which is a challenging application field due to the high adhesion tendency of aluminum. An exceptionally low roughness of the coated forming tool is required to prevent adhesio...

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Bibliographic Details
Published in:JOM (1989) 2020-07, Vol.72 (7), p.2504-2510
Main Authors: Abraham, Tim, Bialuch, Ingmar, Bräuer, Günter, Flegler, Felix, Groche, Peter
Format: Article
Language:English
Subjects:
Adhesion
Adhesives
Aluminum
Carbon
Chemistry/Food Science
Coatings
Deposition
Diamond tools
Diamond-like carbon films
Dry Metal Shaping and Forming
Earth Sciences
Energy consumption
Engineering
Environment
Metal forming
Metal sheets
Methods
Microscopy
Physics
Plasma etching
Production methods
Protective coatings
Quality
Surface properties
Topography
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Description
Summary:Recent investigations demonstrated the applicability of diamond-like carbon (DLC)-coated tools for dry forming of aluminum, which is a challenging application field due to the high adhesion tendency of aluminum. An exceptionally low roughness of the coated forming tool is required to prevent adhesion-induced tool failure. To establish dry forming of aluminum in industrial production processes, efficient methods must be developed to manufacture DLC-coated forming tools with reproducible high surface quality. This paper illustrates two DLC coating processes that are especially optimized for deposition of nanoscopically smooth DLC tool coatings. Two optimized coating systems were deposited, characterized, and subsequently evaluated using application-oriented strip drawing tests to validate their performance in comparison with a state-of-the-art coating system. One coating process showed high potential for production of DLC-coated forming tools with the required surface quality.
ISSN:1047-4838
1543-1851
DOI:10.1007/s11837-020-04174-9