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首页> 外文会议>2001 TMS Annual Meeting on Structural Biomaterials for the 21st Century, Feb 11-12, 2001, New Orleans, LA >CORROSION RESISTANCE AND STRENGTH OF BIODUR~(~R)108 ALLOY, A NICKEL-FREE AUSTENITIC STAINLESS STEEL
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CORROSION RESISTANCE AND STRENGTH OF BIODUR~(~R)108 ALLOY, A NICKEL-FREE AUSTENITIC STAINLESS STEEL

机译：无镍奥氏体不锈钢BIODUR〜（〜R）108合金的耐蚀性和强度

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摘要

BioDur~(~R)108 Alloy is an essentially nickel-free austenitic stainless alloy developed by Carpenter Technology Corporation in response to nickel-allergy problems that have been associated with nickel-containing stainless alloys that have been used in medical applications. The austenitic structure of this alloy is maintained by a high nitrogen content of approximately one percent. Besides austenitic stability, the high nitrogen content also contributes to high levels of corrosion resistance and strength. The corrosion resistance and strength properties of BioDur 108 Alloy are compared to several nickel-containing austenitic stainless alloys that have been used as biomaterials. The strength of such alloys tends to be dominated by nitrogen content, while corrosion resistance is strongly related to the combined contents of chromium, molybdenum and nitrogen. However, the quantitative effect of nitrogen variations on the corrosion resistance observed in high nitrogen alloys is significantly different than in alloys with lower nitrogen levels. In addition, the high manganese content of high nitrogen alloys affects the corrosion characteristics in certain tests, in particular the passive current density measured during potentiodynamic corrosion testing at rapid scan rates. However, it was found that the passive current densities of high nitrogen -high manganese alloys quickly decay to the levels of the comparative alloys in potentiostatic current decay tests and in potentiodynamic tests at slower scan rates.
机译：BioDur〜（R）108合金是由Carpenter Technology Corporation开发的一种基本不含镍的奥氏体不锈钢合金，用于应对与医疗应用中的含镍不锈钢合金有关的镍过敏问题。这种合金的奥氏体结构由大约百分之一的高氮含量保持。除了奥氏体稳定性之外，高氮含量还有助于提高耐蚀性和强度。将BioDur 108合金的耐腐蚀性和强度特性与已用作生物材料的几种含镍奥氏体不锈钢合金进行了比较。这种合金的强度倾向于由氮含量决定，而耐蚀性与铬，钼和氮的总含量密切相关。但是，在高氮合金中观察到的氮变化对耐蚀性的定量影响与在低氮含量合金中观察到的显着不同。此外，高氮合金中高锰含量会影响某些测试的腐蚀特性，特别是在电位动力学腐蚀测试中以快速扫描速率测得的无源电流密度。然而，已发现在恒电位电流衰减测试和在较慢扫描速率的恒电位测试中，高氮高锰合金的无源电流密度迅速衰减至对比合金的水平。

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