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利用差热分析、磁性测量,X射线衍射和电子衍射等手段,研究了磁记录用γ-Fe~2O~5的原始材料——各种水合氧化铁(α、β,γ铁黄)的脱水和结构转变.α,γ相铁黄(α-FeOOH.γ-FeOOH)脱水和结构转变的激活的分别是: α-FeOOH,△E_(脱水)≈80ev;△E_(结构)≈1.98ev; γ-FeOOH,△_(脱水≈1.32ev;△_(结构)≈1.65ev. β相铁黄(β-FeOOH)脱水过程的电子衍射表明,β-FeOOH脱水时先转变成结构与γ-Fe_2O_3相同的亚稳度,再转变成稳定的α-Fe_2O_3。
The dehydration of various hydrated iron oxides (α, β, γ iron yellow) was studied by differential thermal analysis, magnetic measurement, X-ray diffraction and electron diffraction. And structural transitions, the activation of α, γ-phase iron yellow (α-FeOOH.γ-FeOOH) dehydration and structural transformation are: α-FeOOH, △ E_hydration ≈80ev; △ E_ (structure) ≈1.98ev; γ-FeOOH, △ _ (dehydration ≈1.32ev; △ _ (structure) ≈1.65ev. Electron diffraction of β-FeOOH dehydration process showed that β-FeOOH was first transformed to γ-Fe_2O_3 The same degree of metastability, and then transformed into a stable α-Fe_2O_3.