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首页> 外文会议>National Association of Corrosion Engineers Annual Conference >Stress Corrosion Cracking,Passive,and Localized Corrosion of Alloy 22 High-Level Radioactive Waste Containers
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Stress Corrosion Cracking,Passive,and Localized Corrosion of Alloy 22 High-Level Radioactive Waste Containers

机译：合金22高级放射性废物容器的应力腐蚀开裂，被动和局部腐蚀

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Tests were conducted to determine the passive corrosion rate,and the susceptibility of Alloy 22 to localized corrosion and stress corrosion cracking.The passive corrosion rate was fuond to be on the range of 10~(-9) to 10~(-7) A/cm~2.The passive corrosion rate was not strongly dependent on either the solution pH in the range of 2.7 to 8.0 or chloride concentratio from 0.028 to 4.0 M.Increasing the temperature from 25 to 95 deg C resulted i an increase in the passive current density from 2 X 10~(-9) to 4 X 10~(-8) A/cm~2.Results from repassivation potential measurements indicate that Alloy 22 was resistant to localized corrosion especially in solutions where the chloride concentration was less than 0.5 M.Similar results were obtained in stress corrosion cracking tests using fatigue precracked wedge loaded double cantilever beam specimens with an initial stress intensity of 34.8 MPa·m~(1/2),No stress corrosion cracking was observed after 8 months in 5 percent NaCl at 90 deg C.Minor grain boundary attack and limited secondary cracking were observed after an 8 month exposure to 40 percent MgCl_2 at 110 deg C.
机译：进行测试以确定被动腐蚀速率，合金22与局部腐蚀和应力腐蚀裂缝的易感性。无源腐蚀速率是浮雕，在10〜（-9）至10〜（-7）a的范围内/cm〜2。无源腐蚀速率没有强烈依赖于2.7至8.0或氯化物浓度范围内的溶液pH从0.028至4.0 m的溶液pH。将温度从25〜95℃下产生，导致我的被动增加电流密度为2×10〜（-9）至4×10〜（-8）A / cm〜2.从回归潜在测量结果表明，合金22耐抵抗局部腐蚀，尤其是氯化物浓度小于溶液0.5米的结果是在应力腐蚀开裂试验中获得的，使用疲劳预粘的楔形加载的双悬臂梁标本，初始应力强度为34.8MPa·m〜（1/2），在8个月内未观察到应力腐蚀裂解NaCl在90℃。在110℃下暴露于40％MgCl_2后，观察到边界攻击和有限的二次开裂。

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