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首页> 外文期刊>Journal of biomedical materials research, Part A >Inhibition of hydrogen embrittlement of Ni-Ti superelastic alloy in acid fluoride solution by hydrogen peroxide addition
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Inhibition of hydrogen embrittlement of Ni-Ti superelastic alloy in acid fluoride solution by hydrogen peroxide addition

机译：添加过氧化氢抑制氟钛溶液中Ni-Ti超弹性合金的氢脆化

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摘要

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 H 2O 2. In a 0.2% APF solution, hydrogen absorption is markedly inhibited by adding H 2O 2, although corrosion is slightly enhanced by increasing the amount of added H 2O 2. By adding a small amount of H 2O 2 (0.001M), in the early stage of immersion, hydrogen embrittlement is inhibited and corrosion is only slightly enhanced. Upon adding H 2O 2, it appears that the dominant cathodic reactions change from hydrogen evolution to H 2O 2 reduction reactions, or the surface conditions of the alloy are changed by H 2O 2 with a high oxidation capability, thereby inhibiting hydrogen absorption. The present study clearly indicates that infinitesimal addition of H 2O 2 into acid fluoride solutions is effective for the inhibition of the hydrogen embrittlement of the alloy.
机译：尝试通过添加各种量的H 2O 2来抑制Ni-Ti超弹性合金在酸化氟化磷（APF）溶液中的氢脆化。在0.2％APF溶液中，通过添加H 2O 2可以显着抑制氢吸收。尽管通过增加H 2O 2的添加量可以使腐蚀略有增强。通过添加少量的H 2O 2（0.001M），在浸入的早期阶段，氢脆被抑制，腐蚀仅被略微增强。在添加H 2 O 2时，似乎主要的阴极反应从氢放出变为H 2O 2还原反应，或者合金的表面条件被具有高氧化能力的H 2O 2改变，从而抑制了氢的吸收。本研究清楚地表明，向酸性氟化物溶液中加入微量H 2O 2可有效抑制合金的氢脆。

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