Laser Implantation of Niobium and Titanium-Based Particles on Hot Working Tool Surfaces for Improving the Tribological Performance within Hot Stamping

Abstract:

Within the scope of this work, a new approach named laser implantation process has been investigated, in order to improve the tribological performance of hot stamping tools. This surface engineering technology enables the generation of dome-shaped, elevated and highly wear resistant microfeatures on tool surfaces in consequence of a localized dispersing of hard ceramic particles via pulsed laser radiation. As a result, the topography and material properties of the tool and thus the tribological interactions at the blank-die interface are locally influenced. However, a suitable selection of hard ceramic particles is imperative for generating defect-free surface features with a high share of homogenously disturbed particles. For this purpose, different niobium (NbB₂ and NbC) as well as titanium-based (TiB₂ and TiC) materials were embedded on hot working tool specimens and subsequently analyzed with regard to their resulting shape and mechanical properties. Afterwards, modified pin-on-disk tests were carried out by using conventional and laser-implanted tool surfaces, in order to evaluate the wear and friction behavior of both tooling systems.

• Periodical: Defect and Diffusion Forum (Volume 404)
• Pages: 117-123
• DOI: https://doi.org/10.4028/www.scientific.net/DDF.404.117
• Online since: October 2020
• Authors: Stephan Schirdewahn*, Felix Spranger, Kai Hilgenberg, Marion Merklein
• Keywords: Laser Implantation, Surface Modification, Tribology

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