2為原料,KClO3為發(fā)熱劑,Al為還原劑和合金化劑,Ca為深度還原劑,通過金屬熱還原法制備鈦鋁中間合金,考察了單位質(zhì)量熱效應(yīng)、造渣劑配比和還原劑加入量及組成對反應(yīng)過程穩(wěn)定性、合金成分及收率的關(guān)系。研究表明：用Ca和Al做還原劑時,體系絕熱溫度分別是2426 K和1806 K,反應(yīng)制得的鈦鋁中間合金由TiAl、Ti3Al和少量的Al2O3夾雜相組成,化學(xué)分析合金中Ti、Al、O含量分別為58.36%,40.19%和1.41%。"/>

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金屬熱還原法制備鈦鋁中間合金
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1.多金屬共生礦生態(tài)化冶金教育部重點實驗室;2.冶金學(xué)院 東北大學(xué) 沈陽

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重點基礎(chǔ)研發(fā)計劃(項目編號2017YFB0305401-2)；中央直屬高?；緲I(yè)務(wù)費(項目編號： N170908001、 N172506009)


Preparation of TiAl Alloy by Metallothermic Reduction
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1.Key Laboratory of Ecological Metallurgy of Multi–metal Intergrown Ores of Ministry of Education,Shenyang;2.School of Metallurgy,Northeastern University,Shenyang,

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    摘要:

    鈦鋁中間合金的低成本制備是當(dāng)前研究的一個重要方向。本文以TiO2為原料,KClO3為發(fā)熱劑,Al為還原劑和合金化劑,Ca為深度還原劑,通過金屬熱還原法制備鈦鋁中間合金,考察了單位質(zhì)量熱效應(yīng)、造渣劑配比和還原劑加入量及組成對反應(yīng)過程穩(wěn)定性、合金成分及收率的關(guān)系。研究表明：用Ca和Al做還原劑時,體系絕熱溫度分別是2426 K和1806 K,反應(yīng)制得的鈦鋁中間合金由TiAl、Ti3Al和少量的Al2O3夾雜相組成,化學(xué)分析合金中Ti、Al、O含量分別為58.36%,40.19%和1.41%。

    Abstract:

    The low cost preparation of TiAl master alloy is an important direction of current research. In this paper, TiO2 as raw material, KClO3 as heating agent, Al as reducing agent and alloying agent, Ca as deep reducing agent were used for the preparation of TiAl master alloy by metallothermic reduction method. The heat effect per unit mass, the proportion of slag-making agent, the amount and composition of reducing agent on the stability of the reaction process, the composition and yield of alloy were investigated. The results showed that when Ca and Al were used as reducing agents, the adiabatic temperature of the system was 2426 K and 1806 K, respectively. The TiAl master alloy was composed of TiAl, Ti3Al and a small amount of Al2O3 inclusions. The contents of Ti, Al and O in the alloy were 58.36%, 40.19% and 1.41%, respectively.

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宋玉來.,豆志河.,張廷安,劉燕,牛麗萍.金屬熱還原法制備鈦鋁中間合金[J].稀有金屬材料與工程,2020,49(3):1015~1019.[Song Yulai.,Dou Zhihe.,Zhang Ting-an, Liu Yan, Niu Liping. Preparation of TiAl Alloy by Metallothermic Reduction[J]. Rare Metal Materials and Engineering,2020,49(3):1015~1019.]
DOI：10.12442/j. issn.1002-185X.17Ti2019124

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  • 收稿日期:2019-01-17
  • 最后修改日期:2019-07-12
  • 錄用日期:2019-07-30
  • 在線發(fā)布日期: 2020-04-08
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