Non-stick syringe needles: Beneficial effects of thin film metallic glass coating

被引：55

作者：

Chu, Jinn P. ^{[1
]}

Yu, Chia-Chi ^{[1
]}

Tanatsugu, Yusuke ^{[1
,2
]}

Yasuzawa, Mikito ^{[2
]}

Shen, Yu-Lin ^{[3
]}

机构：

[1] Natl Taiwan Univ Sci & Technol, Dept Mat Sci & Engn, Taipei 10607, Taiwan

[2] Univ Tokushima, Dept Chem Sci & Technol, Tokushima 7708506, Japan

[3] Univ New Mexico, Dept Mech Engn, Albuquerque, NM 87131 USA

来源：

SCIENTIFIC REPORTS | 2016年 / 6卷

关键词：

DURABILITY; BEHAVIOR; FORCES; SIZE;

D O I：

10.1038/srep31847

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

This paper reports on the use of Zr-based (Zr53Cu33Al9Ta5) thin film metallic glass (TFMG) for the coating of syringe needles and compares the results with those obtained using titanium nitride and pure titanium coatings. TFMG coatings were shown to reduce insertion forces by similar to 66% and retraction forces by similar to 72%, when tested using polyurethane rubber block. The benefits of TFMG-coated needles were also observed when tested using muscle tissue from pigs. In nano-scratch tests, the TFMG coatings achieved a coefficient of friction (COF) of just similar to 0.05, which is about one order of magnitude lower than those of other coatings. Finite-element modeling also indicates a significant reduction in injection and retraction forces. The COF can be attributed to the absence of grain boundaries in the TFMG coating as well as a smooth surface morphology and low surface free energy.

引用

页数：7

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