Next Article in Journal
Computer-Aided Detection of Hyperacute Stroke Based on Relative Radiomic Patterns in Computed Tomography
Next Article in Special Issue
A Product Development Approach in The Field of Micro-Assembly with Emphasis on Conceptual Design
Previous Article in Journal
Relative Stability of Small Silver, Platinum, and Palladium Doped Gold Cluster Cations
Previous Article in Special Issue
Tunable Silver Nanoparticle Arrays by Hot Embossing and Sputter Deposition for Surface-Enhanced Raman Scattering
Open AccessArticle

Low-Temperature Plasma Nitriding of Mini-/Micro-Tools and Parts by Table-Top System

1
Surface Engineering Design Laboratory, Shibaura Institute of Technology, Tokyo 144-0045, Japan
2
Nano Coat & Film Laboratory, Limited Liability Company, Tokyo 144-0045, Japan
3
MicroTeX Labs, Limited Liability Company, Tokyo 144-0051, Japan
*
Author to whom correspondence should be addressed.
Appl. Sci. 2019, 9(8), 1667; https://doi.org/10.3390/app9081667
Received: 24 March 2019 / Revised: 16 April 2019 / Accepted: 19 April 2019 / Published: 23 April 2019
(This article belongs to the Special Issue Micro/Nano Manufacturing)
Miniature products and components must be surface treated to improve their wear resistance and corrosion toughness. Among various processes, low-temperature plasma nitriding was employed to harden the outer and inner surfaces of micro-nozzles and to strengthen the micro-springs. A table-top nitriding system was developed even for simultaneous treatment of nozzles and springs. A single AISI316 micro-nozzle was nitrided at 673 K for 7.2 ks to have a surface hardness of 2000 HV0.02 and nitrogen solute content up to 10 mass%. In particular, the inner and outer surfaces of a micro-nozzle outlet were uniformly nitrided. In addition, the surface contact angle increased from 40° for bare stainless steels to 104° only by low-temperature plasma nitriding. A stack of micro-nozzles was simultaneously nitrided for mass production. Micro-springs were also nitrided to improve their stiffness for medical application. View Full-Text
Keywords: plasma nitriding; micro-nozzle; micro-spring; nitrogen supersaturation; hardening; hydrophobicity; stiffness control plasma nitriding; micro-nozzle; micro-spring; nitrogen supersaturation; hardening; hydrophobicity; stiffness control
Show Figures

Figure 1

MDPI and ACS Style

Aizawa, T.; Morita, H.; Wasa, K. Low-Temperature Plasma Nitriding of Mini-/Micro-Tools and Parts by Table-Top System. Appl. Sci. 2019, 9, 1667. https://doi.org/10.3390/app9081667

AMA Style

Aizawa T, Morita H, Wasa K. Low-Temperature Plasma Nitriding of Mini-/Micro-Tools and Parts by Table-Top System. Applied Sciences. 2019; 9(8):1667. https://doi.org/10.3390/app9081667

Chicago/Turabian Style

Aizawa, Tatsuhiko; Morita, Hiroshi; Wasa, Kenji. 2019. "Low-Temperature Plasma Nitriding of Mini-/Micro-Tools and Parts by Table-Top System" Appl. Sci. 9, no. 8: 1667. https://doi.org/10.3390/app9081667

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop