抄録
Inhibition of the hydrogen embrittlement of Ni-Ti superelastic alloy in an acidulated phosphate fluoride (APF) solution has been attempted by adding various amounts of H2O2. In a 0.2% APF solution, hydrogen absorption is markedly inhibited by adding H2O2, although corrosion is slightly enhanced by increasing the amount of added H 2O2. By adding a small amount of H2O 2 (0.001M), in the early stage of immersion, hydrogen embrittlement is inhibited and corrosion is only slightly enhanced. Upon adding H 2O2, it appears that the dominant cathodic reactions change from hydrogen evolution to H2O2 reduction reactions, or the surface conditions of the alloy are changed by H 2O2 with a high oxidation capability, thereby inhibiting hydrogen absorption. The present study clearly indicates that infinitesimal addition of H2O2 into acid fluoride solutions is effective for the inhibition of the hydrogen embrittlement of the alloy.
| 元の言語 | English |
|---|---|
| ページ（範囲） | 404-411 |
| ページ数 | 8 |
| ジャーナル | Journal of Biomedical Materials Research - Part A |
| 巻 | 98 A |
| 発行部数 | 3 |
| DOI | |
| 出版物ステータス | Published - 2011 9 1 |
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ASJC Scopus subject areas
- Biomedical Engineering
- Biomaterials
- Ceramics and Composites
- Metals and Alloys
これを引用
Inhibition of hydrogen embrittlement of Ni-Ti superelastic alloy in acid fluoride solution by hydrogen peroxide addition. / Yokoyama, Ken'Ichi; Yazaki, Yushin; Sakai, Jun'Ichi.
：: Journal of Biomedical Materials Research - Part A, 巻 98 A, 番号 3, 01.09.2011, p. 404-411.研究成果: Article
}
TY - JOUR
T1 - Inhibition of hydrogen embrittlement of Ni-Ti superelastic alloy in acid fluoride solution by hydrogen peroxide addition
AU - Yokoyama, Ken'Ichi
AU - Yazaki, Yushin
AU - Sakai, Jun'Ichi
PY - 2011/9/1
Y1 - 2011/9/1
N2 - Inhibition of the hydrogen embrittlement of Ni-Ti superelastic alloy in an acidulated phosphate fluoride (APF) solution has been attempted by adding various amounts of H2O2. In a 0.2% APF solution, hydrogen absorption is markedly inhibited by adding H2O2, although corrosion is slightly enhanced by increasing the amount of added H 2O2. By adding a small amount of H2O 2 (0.001M), in the early stage of immersion, hydrogen embrittlement is inhibited and corrosion is only slightly enhanced. Upon adding H 2O2, it appears that the dominant cathodic reactions change from hydrogen evolution to H2O2 reduction reactions, or the surface conditions of the alloy are changed by H 2O2 with a high oxidation capability, thereby inhibiting hydrogen absorption. The present study clearly indicates that infinitesimal addition of H2O2 into acid fluoride solutions is effective for the inhibition of the hydrogen embrittlement of the alloy.
AB - Inhibition of the hydrogen embrittlement of Ni-Ti superelastic alloy in an acidulated phosphate fluoride (APF) solution has been attempted by adding various amounts of H2O2. In a 0.2% APF solution, hydrogen absorption is markedly inhibited by adding H2O2, although corrosion is slightly enhanced by increasing the amount of added H 2O2. By adding a small amount of H2O 2 (0.001M), in the early stage of immersion, hydrogen embrittlement is inhibited and corrosion is only slightly enhanced. Upon adding H 2O2, it appears that the dominant cathodic reactions change from hydrogen evolution to H2O2 reduction reactions, or the surface conditions of the alloy are changed by H 2O2 with a high oxidation capability, thereby inhibiting hydrogen absorption. The present study clearly indicates that infinitesimal addition of H2O2 into acid fluoride solutions is effective for the inhibition of the hydrogen embrittlement of the alloy.
KW - corrosion
KW - fluoride
KW - hydrogen embrittlement
KW - nitinol
KW - shape memory alloy
UR - http://www.scopus.com/inward/record.url?scp=79960376113&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79960376113&partnerID=8YFLogxK
U2 - 10.1002/jbm.a.33124
DO - 10.1002/jbm.a.33124
M3 - Article
C2 - 21630433
AN - SCOPUS:79960376113
VL - 98 A
SP - 404
EP - 411
JO - Journal of Biomedical Materials Research - Part A
JF - Journal of Biomedical Materials Research - Part A
SN - 1549-3296
IS - 3
ER -