Autor: |
Tatsuhiko Aizawa, Hiroshi Morita, Kenji Wasa |
Jazyk: |
angličtina |
Rok vydání: |
2019 |
Předmět: |
|
Zdroj: |
Applied Sciences, Vol 9, Iss 8, p 1667 (2019) |
Druh dokumentu: |
article |
ISSN: |
2076-3417 |
DOI: |
10.3390/app9081667 |
Popis: |
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. |
Databáze: |
Directory of Open Access Journals |
Externí odkaz: |
|