Title:
SURFACE-MODIFIED MAGNESIUM ALLOY
Document Type and Number:
WIPO Patent Application WO/2020/196778
Kind Code:
A1
Abstract:
Provided are: a magnesium alloy of which the surface is modified so as to improve the corrosion resistance of the magnesium alloy; and a method for manufacturing the magnesium alloy. (1) A surface-modified magnesium alloy comprising a magnesium alloy having an arbitrary shape, a magnesium fluoride layer formed by fluorinating the surface of the magnesium alloy, and diamond-like carbon layer formed on the magnesium fluoride layer. (2) A method for manufacturing a surface-modified magnesium alloy, the method comprising: fluorinating the surface of a magnesium alloy having an arbitrary shape to form a magnesium fluoride layer on the surface of the magnesium alloy; placing the magnesium alloy having the magnesium fluoride layer formed thereon in a high-frequency plasma CVD device; and introducing a raw material gas containing carbon into the device to form diamond-like carbon layer on the magnesium fluoride layer.
Inventors:
YAMASHITA SHUZO (JP)
SASAKI MAKOTO (JP)
WADA AKIRA (JP)
SASAKI MAKOTO (JP)
WADA AKIRA (JP)
Application Number:
PCT/JP2020/013769
Publication Date:
October 01, 2020
Filing Date:
March 26, 2020
Export Citation:
Assignee:
JAPAN MEDICAL DEVICE TECH CO LTD (JP)
International Classes:
C22C23/04; A61L27/04; A61L27/30; A61L31/02; A61L31/08; A61L31/12; C23C28/04
Domestic Patent References:
| WO2018139647A1 | 2018-08-02 | |||
| WO2018131476A1 | 2018-07-19 | |||
| WO2020012529A1 | 2020-01-16 | |||
| WO2019182003A1 | 2019-09-26 | |||
| WO2018139647A1 | 2018-08-02 |
Foreign References:
| JP2014533967A | 2014-12-18 | |||
| JP2007195883A | 2007-08-09 | |||
| JP2017094016A | 2017-06-01 |
Other References:
ZHANG Y; YANG J X; CUI F Z; LEE I S; LEE G H: "Characterization and degradation comparison of DLC film on different magnesium alloys.", SURFACES & COATINGS TECHNOLOGY, vol. 205, no. 1, 2010, pages S15 - S20, XP027548861
YAN LIN WEI, LIN LIN HUANG, LI JUN HAN, YA SHAO CHEN: "Corrosion resistance and surface biocompatibility of diamond-like carbon coating on AZ31D magnesium alloy.", INTERNATIONAL JOURNAL OF SURFACE SCIENCE AND ENGINEERING, vol. 10, no. 2, 30 November 2015 (2015-11-30), CH, pages 101 - 115, XP009529458, ISSN: 10.1504/IJSURFSE.2016.076508, DOI: 1749-785X
See also references of EP 3950990A4
YAN LIN WEI, LIN LIN HUANG, LI JUN HAN, YA SHAO CHEN: "Corrosion resistance and surface biocompatibility of diamond-like carbon coating on AZ31D magnesium alloy.", INTERNATIONAL JOURNAL OF SURFACE SCIENCE AND ENGINEERING, vol. 10, no. 2, 30 November 2015 (2015-11-30), CH, pages 101 - 115, XP009529458, ISSN: 10.1504/IJSURFSE.2016.076508, DOI: 1749-785X
See also references of EP 3950990A4
Attorney, Agent or Firm:
SUGIMOTO, Shuji et al. (JP)
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