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铸造Fe-Cr-B-Al合金高温氧化行为研究
Research on High-Temperature Oxidation Resistance of Fe-Cr-B-Al Alloy
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- DOI:
- 作者:
- 王耿洁1樊靖波2周玉成3刘同雨1皇志富1
WANG Gengjie 1 , FAN Jingbo 2 , ZHOU Yucheng 3 , LIU Tongyu 1 , HUANG Zhifu 1
- 作者单位:
- 1. 西安交通大学材料科学与工程学院金属材料强度国家重点实验室 2. 陕西延长中煤榆林能源化工有限公司3. 河南科技大学金属材料磨损控制与成型技术国家地方联合工程研究中心材料科学与工程学院
1. State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi ’ an Jiaotong University, Xi ’ an 710049, China; 2. Shaanxi Yanchang Coal Yulin Energy and Chemical Co., Ltd., Yulin 718506, China; 3. National Joint Engineering Research Center for Abrasion Control and Molding of Metal Materials, School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471003, China
- 关键词:
- Fe-Cr-B-Al合金;高铬合金钢;高温氧化;氧化机理;
Fe-Cr-B-Al alloy; high chromium alloy steel; high temperature oxidation; oxidation mechanism
- 摘要:
- 在高铬合金钢中引入B元素和Al元素来改善高温抗氧化性能,并对Fe-Cr-B-Al合金900℃高温氧化行为进行了研究。结果表明,Fe-Cr-B-Al合金的氧化增重远低于高铬合金钢的氧化增重,原因是Fe-Cr-B-Al合金的氧化产物外层为致密的Al2O3,可以有效阻挡O元素向内扩散;内层为FeCr2O4,与Al2O3形成的复合氧化膜可以削弱电子流动,从而使Fe-Cr-B-Al合金具有更优异的高温抗氧化性能。
The oxidation behavior of Fe-Cr-B-Al alloy at 900 ℃ was studied by introducing elements B and Al into high
chromium alloy steel to improve its high temperature oxidation resistance. The results show that the oxidation weight gain
of Fe-Cr-B-Al alloy is much lower than that of high chromium alloy steel. The reason is that the outer layer of oxidation
products of Fe-Cr-B-Al alloy is dense Al 2 O 3 , which can effectively block the inward diffusion of oxygen element. The inner
layer is FeCr 2 O 4 , and the composite oxide film formed with Al 2 O 3 can weaken the electron flow, so that the Fe-Cr-B-Al
alloy has more excellent oxidation resistance at high temperature.