STRUCTURAL TRANSFORMATION OF IRON HYDROXIDE OXIDE NANOSOLIDS UNDER HIGH-PRESSURE

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	STRUCTURAL TRANSFORMATION OF IRON HYDROXIDE OXIDE NANOSOLIDS UNDER HIGH-PRESSURE
	Y. Sui; D. P. Xu; W. H. Su
	1995
发表期刊	Materials Research Bulletin
ISSN	0025-5408
卷号	30 期号:12 页码:1553-1560
摘要	In this study, beta-FeOOH nanosolids were produced by compacting beta-FeOOH nanoparticles (average size is 12 nm) synthesized by the method of chemical hydrolysis. The X-ray diffraction measurements show that the structure and crystallite size of beta-FeOOH nanosolids do not change under high pressure up to 4.5 GPa, but differential thermal analysis indicates that the temperature of structural transformation increases strongly with increasing pressure, from 203.8 degrees C under atmosphere pressure to 274 degrees C under the pressure of 4.5 GPa. After treatment under hot pressure, the structure of the beta-FeOOH nanosolids changed significantly. We observed for the first time the transformation from the beta-FeOOH phase to the alpha-FeOOH phase under hot pressure of 3.0 GPa, 200 degrees C and 4.5 GPa, 350 degrees C and obtained a new metastable phase of FeOOH (tetragonal sys., a = 0.98968 nm, c = 1.02167 nm) under hot pressure of 4.5 GPa, 200 degrees C.
部门归属	jilin univ,dept phys,changchun 130023,peoples r china. acad sinica,int ctr mat phys,shenyang 110015,peoples r china. ccast,world lab,ctr condensed matter & radiat phys,beijing 100080,peoples r china.;sui, y (reprint author), jilin univ,rare earth solid state phys res grp,changchun 130023,peoples r china
关键词	Iron HydrOxide Oxide Nanosolid
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/38668
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. Sui,D. P. Xu,W. H. Su. STRUCTURAL TRANSFORMATION OF IRON HYDROXIDE OXIDE NANOSOLIDS UNDER HIGH-PRESSURE[J]. Materials Research Bulletin,1995,30(12):1553-1560.
APA	Y. Sui,D. P. Xu,&W. H. Su.(1995).STRUCTURAL TRANSFORMATION OF IRON HYDROXIDE OXIDE NANOSOLIDS UNDER HIGH-PRESSURE.Materials Research Bulletin,30(12),1553-1560.
MLA	Y. Sui,et al."STRUCTURAL TRANSFORMATION OF IRON HYDROXIDE OXIDE NANOSOLIDS UNDER HIGH-PRESSURE".Materials Research Bulletin 30.12(1995):1553-1560.