| Presentation | 2018-08-10 Surface composition and chemical bond structure of Zr-based metallic glass Haruto Koriyama, Keisuke Fujimori, Yoshiharu Enta, Nozomu Togashi, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | It has been reported that the Zr-based bulk metallic glass alloy commonly known as Vit 105 (Zr_{52.5}Cu_{17.9}Ni_{14.6}Al_{10}Ti_{5}) exhibits better corrosion resistance, as compared to the alloy containing no Ti atoms. In this study, to investigate the physical and chemical origins of the corrosion resistance, X-ray photoelectron spectroscopic (XPS) measurements have been carried out for both the Vit 105 and Zr 55 (Zr_{55}Cu_{30}Al_{10}Ni_{5}) alloys. Elemental compositions, chemical bonding states, and thicknesses of the passivation layers on both alloys were obtained from depth profile of core-level spectra. Moreover, exact rate of initial oxidation started from bulk surface without the passivation layer was obtained by real-time XPS. The results demonstrated that main composition of the passivation layers on both alloys is zirconium oxide, with some amount of aluminum oxide and titanium oxide in Vit 105, while there are no presence of copper and nickel in the layers. It was also found that there are almost no differences in the thickness of the passivation layer and the initial oxidation rate between both alloys. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Metallic Glass / Passivation Layer / Elemental Composition / XPS |
| Paper # | CPM2018-19 |
| Date of Issue | 2018-08-02 (CPM) |
| Conference Information | |
| Committee | CPM |
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| Conference Date | 2018/8/9(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Hirosaki Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Component Parts and Materials, etc. |
| Chair | Fumihiko Hirose(Yamagata Univ.) |
| Vice Chair | Mayumi Takeyama(Kitami Inst. of Tech.) |
| Secretary | Mayumi Takeyama(Toyohashi Univ. of Tech.) |
| Assistant | Yasuo Kimura(Tokyo Univ. of Tech.) / Hideki Nakazawa(Hirosaki Univ.) / Tomoaki Terasako(Ehime Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Component Parts and Materials |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Surface composition and chemical bond structure of Zr-based metallic glass |
| Sub Title (in English) | |
| Keyword(1) | Metallic Glass |
| Keyword(2) | Passivation Layer |
| Keyword(3) | Elemental Composition |
| Keyword(4) | XPS |
| 1st Author's Name | Haruto Koriyama |
| 1st Author's Affiliation | Hirosaki University(Hirosaki Univ.) |
| 2nd Author's Name | Keisuke Fujimori |
| 2nd Author's Affiliation | Hirosaki University(Hirosaki Univ.) |
| 3rd Author's Name | Yoshiharu Enta |
| 3rd Author's Affiliation | Hirosaki University(Hirosaki Univ.) |
| 4th Author's Name | Nozomu Togashi |
| 4th Author's Affiliation | Adamant Namiki Precision Jewel Co., Ltd.(Adamant Namiki Precision Jewel) |
| Date | 2018-08-10 |
| Paper # | CPM2018-19 |
| Volume (vol) | vol.118 |
| Number (no) | CPM-179 |
| Page | pp.pp.53-56(CPM), |
| #Pages | 4 |
| Date of Issue | 2018-08-02 (CPM) |