Fe-Mn-Al-Ni-C轻质钢的光热转换性能  

Photothermal conversion performance of Fe-Mn-Al-Ni-C lightweight steel

作　　者：李诗瑶 章飞 陈梅洁 李开洋 熊志平 宋旼[1] 王章维 LI Shiyao;ZHANG Fei;CHEN Meijie;LI Kaiyang;XIONG Zhiping;SONG Min;WANG Zhangwei(State Key Laboratory of Powder Metallurgy,Central South University,Changsha 410083,China;School of Energy Science and Engineering,Central South University,Changsha 410083,China;School of Energy Power and Mechanical Engineering,North China Electric Power University,Beijing 102206,China;National Key Laboratory of Science and Technology on Materials in Impact Environment,Beijing Institute of Technology,Beijing 100081,China)

机构地区：[1]中南大学粉末冶金全国重点实验室,长沙410083 [2]中南大学能源科学与工程学院,长沙410083 [3]华北电力大学能源动力与机械工程学院,北京102206 [4]北京理工大学冲击环境材料技术国家级重点实验室,北京100081

出　　处：《粉末冶金材料科学与工程》2025年第1期60-70,共11页Materials Science and Engineering of Powder Metallurgy

基　　金：国家重点研发计划资助项目(2022YFE0134400);冲击环境材料技术重点实验室基金项目(6142902220101)。

摘　　要：本文结合表面刻蚀和原位氧化工艺,采用X射线衍射仪、扫描电镜、能谱仪、X射线光电子能谱仪、光纤光谱仪、傅里叶变换红外光谱仪等,通过调控氧化温度研究Fe-Mn-Al-Ni-C轻质钢表面氧化产物的变化及其对光热转换性能的影响。结果表明:相较于单一原位氧化工艺,增加刻蚀预处理能促进纳米片状氧化物的生成,有效提高合金的光热转换性能。刻蚀后,随着氧化温度从300℃上升到400℃,氧化物尺寸增大,合金的光热转换性能提高;在400℃氧化2 h后,合金的太阳能吸收率和光热转换效率分别达到峰值96.1%和90.2%;当氧化温度升至500℃,热膨胀系数不匹配导致热应力增大,合金表面生成的氧化层轻微脱落,因此材料的光热性能开始下降;600℃氧化后,氧化层的严重脱落和Al_(2)O_(3)的生成使得光热性能进一步下降。In this paper,combined with surface etching and in-situ oxidation process,X-ray diffractometer,scanning electron microscope,energy spectrometer,X-ray photoelectron spectrometer,fiber optic spectrometer,and Fourier transform infrared spectrometer were used,the variations in the oxidation products on the surface of Fe-Mn-Al-Ni-C lightweight steel and their effects on photothermal conversion performance were studied by adjusting the oxidation temperature.The results show that applying etching pretreatment promotes the generation of nano-lamellar oxides,thereby effectively improving the photothermal conversion performance of the alloys compared to using the in situ oxidation process alone.After etching,the oxide size increases as the oxidation temperature rises from 300℃to 400℃,leading to an improvement in the photothermal conversion performance of the alloy;the solar energy absorptance and photothermal conversion efficiency of the alloy reach peaks of 96.1%and 90.2%,respectively,after oxidation at 400℃for 2 h;when the oxidation temperature increases to 500℃,increased thermal stress due to the mismatch of thermal expansion coefficients causes slight detachment of the oxide layer from the alloy surface,resulting in a decline in photothermal performance;oxidation at 600℃leads to severe oxide layer detachment and the formation of Al_(2)O_(3),further reducing the photothermal performance.

关 键 词：轻质钢 选择性刻蚀 原位氧化 光热转换 太阳能选择性吸收材料 

分 类 号：TG139[一般工业技术—材料科学与工程]