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中国腐蚀与防护学报  2024, Vol. 44 Issue (1): 100-106     CSTR: 32134.14.1005.4537.2023.037      DOI: 10.11902/1005.4537.2023.037
  研究报告 本期目录 | 过刊浏览 |
Si含量对四元Fe-20Ni-20Cr-ySi合金在900℃下氧化行为的影响
冯抗抗, 任延杰(), 吕云蕾, 周梦妮, 陈荐, 牛焱()
长沙理工大学能源与动力工程学院 长沙 410076
Effect of Si Content on Oxidation Behavior of Quaternary Fe-20Ni-20Cr- ySi Alloys in Oxygen at 900oC
FENG Kangkang, REN Yanjie(), LV Yunlei, ZHOU Mengni, CHEN Jian, NIU Yan()
Department of Energy and Power Engineering, Changsha University of Science and Technology, Changsha 410076, China
引用本文:

冯抗抗, 任延杰, 吕云蕾, 周梦妮, 陈荐, 牛焱. Si含量对四元Fe-20Ni-20Cr-ySi合金在900℃下氧化行为的影响[J]. 中国腐蚀与防护学报, 2024, 44(1): 100-106.
Kangkang FENG, Yanjie REN, Yunlei LV, Mengni ZHOU, Jian CHEN, Yan NIU. Effect of Si Content on Oxidation Behavior of Quaternary Fe-20Ni-20Cr- ySi Alloys in Oxygen at 900oC[J]. Journal of Chinese Society for Corrosion and protection, 2024, 44(1): 100-106.

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摘要: 

研究了Fe-20Ni-20Cr-ySi (y = 0, 1, 3, 5,质量分数,%)合金在纯氧中900℃下的氧化行为。三元Fe-20Ni-20Cr合金在氧化后表面生成了复杂的氧化膜,氧化膜对合金保护作用较差。Si含量从1%增加至3%,发生了Si从内氧化到外氧化的转变,添加Si显著提高了Fe-20Ni-20Cr合金的抗氧化性能。其中,Fe-20Ni-20Cr-3Si和Fe-20Ni-20Cr-5Si均在Cr2O3层/合金界面形成了连续的非晶态SiO2层,阻止了Fe、Ni和Cr的向外和氧的向内扩散的作用。4种合金中,Fe-20Ni-20Cr-3Si具有最优的抗氧化性能。

关键词 Fe-Ni-Cr-Si合金高温氧化氧化动力学    
Abstract

The oxidation behavior of Fe-20Ni-20Cr-ySi (y = 0, 1, 3, 5, mass fraction, %) alloys were studied in 1 atm O2 at 900oC for 24 h. After oxidation, Fe-20Ni-20Cr alloy without Si addition formed a complex oxide scale on the surface with poor protectiveness. When the Si content increased from 1% to 3%, a transition from internal to external oxidation of Si occurred. Therefore, additions of Si can significantly improve the oxidation resistance of the austenitic Fe-20Ni-20Cr alloy. Both Fe-20Ni-20Cr-3Si and Fe-20Ni-20Cr-5Si formed an amorphous SiO2 layer on the Cr2O3/alloy interface, and this continuous amorphous SiO2 layer provided an effective barrier to prevent the outward diffusion of Fe, Ni and Cr, as well as the inward migration of oxygen. A comparison of the oxidation behavior of alloys with different Si contents indicated that Fe-20Ni-20Cr-3Si has the most excellent oxidation resistance properties.

Key wordsFe-Ni-Cr-Si alloy    silicon    high temperature oxidation    oxidation kinetics
收稿日期: 2023-02-19      32134.14.1005.4537.2023.037
ZTFLH:  TG172  
基金资助:国家自然科学基金(52171066)
通讯作者: 任延杰,E-mail: yjren@csust.edu.cn,研究方向为动力设备的腐蚀与防护领域的研究
牛 焱,E-mail: yniu@csust.edu.cn,研究方向为金属的高温腐蚀与防护研究
Corresponding author: REN Yanjie, E-mail: yjren@csust.edu.cn
NIU Yan, yniu@csust.edu.cn
作者简介: 冯抗抗,男,1996年生,硕士生
AlloyNominal compositionMeasured composition
atomic fraction, %mass fraction, %
Fe-20Ni-20CrFe-19.13Ni-20.89CrFe-20.2Ni-19.5Cr
Fe-20Ni-20Cr-1SiFe-18.84Ni-21.26Cr-2.02SiFe-20.1Ni-20.1Cr-1.0Si
Fe-20Ni-20Cr-3SiFe-18.47Ni-21.78Cr-5.76SiFe-20.1Ni-21.0Cr-3.0Si
Fe-20Ni-20Cr-5SiFe-17.99Ni-20.41Cr-9.48SiFe-20.1Ni-19.9Cr-5.0Si
表1  Fe-20Ni-20Cr-ySi (y=0, 1, 3,5, %)合金的设计成分和由ICP光谱技术测得的实际成分
图1  Fe-20Ni-20Cr-ySi (y = 0, 1, 3, 5, %)合金在900℃下1 atm O2中氧化24 h的动力学曲线
AlloyParabolic stages
Fe-20Ni-20Cr4.32 × 10-12 (0-3 h)5.85 × 10-11 (3-9 h)1.26 × 10-12 (9-24 h)
Fe-20Ni-20Cr-1Si4.56 × 10-12 (0-6 h)9.97 × 10-13 (6-18 h)
Fe-20Ni-20Cr-3Si4.26 × 10-13 (0-12 h)
Fe-20Ni-20Cr-5Si1.17 × 10-12 (0-6 h)8.76 × 10-13 (6-16 h)
表2  Fe-20Ni-20Cr-ySi (y = 0, 1, 3, 5, %)合金在900℃下1 atm O2 中氧化动力学拟合的抛物线速率常数
图2  Fe-20Ni-20Cr合金在900℃下1 atm O2中氧化24 h的SEM/BEI截面形貌和相应的EDS元素分布
图3  Fe-20Ni-20Cr-1Si合金在900℃下1atm O2中氧化24 h的SEM/BEI截面形貌和相应的EDS元素分布
图4  Fe-20Ni-20Cr-3Si合金在900℃下1 atm O2中氧化24 h的SEM/BEI截面形貌和相应的EDS元素分布
图5  Fe-20Ni-20Cr-5Si合金在900℃下1 atm O2中氧化24 h的 SEM/BEI截面形貌
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