Micro-/Nano-Texturing of Aluminum by Precise Coining for Functional Surface Decoration

Metals

Tomoaki Yoshino¹  Tadahiko Inohara²  Tatsuhiko Aizawa³ 

[1] Komatsu-Seiki Kosakusho, Co., Ltd., Suwa 392-0012, Japan;LPS-Works, Co., Ltd., Tokyo 144-0033, Japan;Surface Engineering Design Laboratory, Shibaura Institute of Technology, Tokyo 144-0045, Japan;

关键词: functional decoration;    femtosecond micro-/nano-texturing;    nitrided punch;    coining;    pure aluminum;   

DOI  :  10.3390/met10081044

来源: DOAJ

【 摘 要 】

The AISI316 austenitic stainless steel die was prepared and nitrided at 673 K for 14.4 ks. Through this low temperature plasma nitriding, the AISI316 die was homogeneously hardened up to 1400 HV within its surface layer of 50 μm. This nitrided AISI316 die was utilized to print the tailored micropattern with nanotextures onto its surface by the femtosecond laser processing. Each micropattern consisted of the tailored segments to have unidirectional nanotextures with different orientations. Each segment was recognized by its intrinsic surface plasmonic brilliance to tailored nanotextures. The CNC (Computer Numerical Control) stamping system was used to coin these micropatterns with nanotextures onto the AA1060 aluminum plates with the thickness of 1 mm. SEM (Scanning Electron Microscopy) and optical microscopy were employed to characterize the original micro-/nano-textures on the AISI316 die as well as the coined nanotextured patterns on the AA1060 plate surfaces.

【 授权许可】

Unknown