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| 固溶态316LN不锈钢的氧化行为 | |
| 引用本文： | 王明家,信瑞山,龙珊珊,褚春光.固溶态316LN不锈钢的氧化行为[J].材料热处理学报,2012,33(8):74-78. |
| 作者姓名： | 王明家 信瑞山 龙珊珊 褚春光 |
| 作者单位： | 1. 燕山大学亚稳材料制备技术与科学国家重点实验室,河北秦皇岛,066004 2. 燕山大学亚稳材料制备技术与科学国家重点实验室,河北秦皇岛066004／清华大学机械工程系,北京100084 3. 唐山钢铁股份有限公司,河北唐山,063000 |
| 基金项目： | 国家自然科学基金资助项目，国家“863”计划 |
| 摘 要： | 研究了固溶态316LN不锈钢在900～1200℃空气中的氧化行为。结果表明,316LN不锈钢在900～1200℃范围内氧化增重与氧化时间的关系遵从抛物线规律,氧化速率常数kT随温度的升高而增大;316LN不锈钢的高温氧化具有选择性,氧化首先发生于富Cr的晶界处;900℃时氧化轻微,氧化膜主要为Cr2O3,1000℃时氧化膜组成为Cr2O3和尖晶石结构的MnCr2O4,1200℃时除Cr2O3和MnCr2O4外,还存在少量的FeCr2O4。316LN不锈钢的氧化激活能为278.765 kJ/mol,氧化速率常数为8.05×105exp{-278265/(RT)}。 |
| 关 键 词： | 固溶态 316LN不锈钢 氧化 氧化动力学 氧化激活能 |
Oxidation behavior of 316LN stainless steel at solution state |
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| WANG Ming-jia,XIN Rui-shan,LONG Shan-shan,CHU Chun-guang.Oxidation behavior of 316LN stainless steel at solution state[J].Transactions of Materials and Heat Treatment,2012,33(8):74-78. | |
| Authors: | WANG Ming-jia XIN Rui-shan LONG Shan-shan CHU Chun-guang |
| Affiliation: | 1.State Key Laboratory of Metastable Materials Science and Technology,Yanshan University,Qinhuangdao 066004,China;2.Department of Mechanical Engineering Tsinghua University,Beijing 100084,China; 3.Tangshan Iron and Steel Co Ltd,Tangshan 063000,China) |
| Abstract: | Isothermal oxidation behavior of 316LN stainless steel at solution state at temperatures of 900-1200 ℃ in air was investigated.The results show that isothermal oxidation kinetics of 316LN stainless steel follows parabolic law in the temperature range of 900 ℃ to 1200 ℃.The oxidization rate constant kT increases as temperature elevating.The oxidation of 316LN stainless steel exhibits selectivity,which starts from the chromium-enriched gain boundaries.At 900 ℃,oxidation occurs slightly and the oxide scales mainly are composed of Cr2O3,which mainly consist of Cr2O3 and MnCr2O4 with spinel structure at 1000 ℃.At 1200 ℃,besides Cr2O3 and MnCr2O4,the oxide scales also contain a little of FeCr2O4.Isothermal oxidation activate energy of 316LN stainless steel is 278.765 kJ/mol,and isothermal oxidation rate constant is 8.05×105exp{-278265/(RT)}. |
| Keywords: | solid-solution state 316LN stainless steel oxidation oxidation kinetics oxidation activate energy |
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