镍掺杂量对烧结制备Ni/FeCr2O4复合材料组织与性能的影响
Effect of Nickel Doping Amount on Structure and Properties of Ni/FeCr2O4 Composites Prepared by Sintering
摘 要
以镍粉、Fe2O3、Cr2O3、聚乙烯醇为原料,采用粉末烧结法制备了不同镍掺杂量(20%,25%,40%,质量分数) Ni/FeCr2O4尖晶石结构复合材料,采用X射线衍射仪、红外光谱仪、扫描电子显微镜和力学试验机等研究了镍掺杂量对复合材料组织与性能的影响。结果表明:随着镍掺杂量的增加,复合材料组织变得更加致密,体积收缩率与密度增大,抗弯强度显著提高,当镍掺杂量为40%时,密度与抗弯强度相比于无镍掺杂时分别提高17.3%和22.5%;镍掺杂改善了FeCr2O4尖晶石在波长1 000 nm附近的发射率,略微降低了在250~700 nm和1 200~1 600 nm波长范围的发射率,但这两个波段的发射率仍高于0.9。
发射率
抗弯强度
高温烧结
掺杂改性
spinel
emissivity
flexural strength
high temperature sintering
doping modification
Abstract
With nickel powder, Fe2O3, Cr2O3 and polyvinyl alcohol as raw materials, Ni/FeCr2O4 spinel structure composites with different nickel doping amounts (20%, 25%, 40%, mass fraction) were prepared by powder sintering method. The effects of nickel doping amount on the microstructure and properties of Ni/FeCr2O4 composites were studied by X-ray diffractometer, infrared spectrometer, scanning electron microscope, and mechanical tester, etc. The results show that with increasing nickel doping amount, the composite structure became denser and the volumetric shrinkage and density increased; the flexural strength was significantly improved. When the nickel doping amount was 40%, the density and flexural strength was improved by 17.3% and 22.5%, respectively, comparing with those of non-nickel doping. Nickel doping improved the emissivity of FeCr2O4 spinel around the wavelength of 1 000 nm, and slightly reduced the emissivity in the wavelength range of 250-700 nm and 1 200-1 600 nm, but the emissivity in these two bands was still higher than 0.9.
中图分类号 TB34 DOI 10.11973/jxgccl202209004
所属栏目 试验研究
基金项目 国家自然科学基金资助项目(51206125);湖北省重点研发计划项目(2021BAA066)
收稿日期 2022/3/15
修改稿日期 2022/7/23
网络出版日期
作者单位点击查看
联系人作者刘华臣
备注马振强(1997-),男,山西吕梁人,硕士研究生
引用该论文: MA Zhenqiang,LI Yuanyuan,CHENG Xiaomin,LIU Huachen. Effect of Nickel Doping Amount on Structure and Properties of Ni/FeCr2O4 Composites Prepared by Sintering[J]. Materials for mechancial engineering, 2022, 46(9): 24～28
马振强,李元元,程晓敏,刘华臣. 镍掺杂量对烧结制备Ni/FeCr2O4复合材料组织与性能的影响[J]. 机械工程材料, 2022, 46(9): 24～28
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【11】张亮,杨卉芃,冯安生,等.全球镍矿资源开发利用现状及供需分析[J].矿产保护与利用,2016(1):64-69. ZHANG L,YANG H P,FENG A S,et al.Study on current situation and analysis of supply and demand of global nickel resource[J].Conservation and Utilization of Mineral Resources,2016(1):64-69.
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