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Zr-Fe-Si體系580 ℃富鋯端相關(guān)系研究
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作者單位:

1.北京有色金屬研究總院;2.有研資源環(huán)境技術(shù)研究院(北京)有限公司;3.中國核動力研究設(shè)計院

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中圖分類號:

TG113.14

基金項目:

中國核工業(yè)集團公司科技創(chuàng)新團隊項目


Study on the phase relations in Zr-rich region of Zr-Fe-Si system at 580 ℃
Author:
Affiliation:

1.General Research Institute for Nonferrous Metals;2.China GRINM Resources and Environment Tech. Co., Ltd;3.Nuclear Power Institute of China

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    摘要:

    采用平衡合金法，通過X射線粉末衍射（XRD），掃描電子顯微鏡（SEM）及能譜分析（EDX）等手段研究了Zr-Fe-Si體系富Zr端580 ℃下的相平衡關(guān)系，包括5個兩相區(qū)和2個三相區(qū)，兩相區(qū)為Zr2Si+Zr2Fe、Zr2Fe+ZrFe2、Zr2Fe +Zr3Fe、Zr2Si+Zr5Si3和α-Zr+Zr2Si，三相區(qū)為α-Zr+Zr2Fe+Zr3Fe和α-Zr+Zr2Si+Zr5Si3。觀察到已有Zr-Fe和Zr-Si相圖中在580 ℃下為不穩(wěn)定相的Zr2Fe和Zr5Si3，沒有觀察到在Zr-Si相圖中標記為穩(wěn)定相的Zr3Si。相同晶體結(jié)構(gòu)的Zr2Si和Zr2Fe部分固溶，F(xiàn)e在Zr2Si中的固溶度達到5.95 at.%，Si在Zr2Fe中的固溶度達到6.38 at.%，立方結(jié)構(gòu)ZrFe2能固溶3.11 at.% Si。

    Abstract:

    Phase equilibria in the Zr-rich region of Zr-Fe-Si system at 580 ℃ was determined through equilibrated alloy method by using X-ray powder diffraction (XRD), scanning electron microscope (SEM) and energy dispersive x-ray analysis (EDX). Five two-phase equilibria Zr2Si + Zr2Fe, Zr2Fe + ZrFe2, Zr2Fe + Zr3Fe, Zr2Si + Zr5Si3, α-Zr + Zr2Si and two three-phase equilibria α-Zr + Zr2Fe + Zr3Fe, α-Zr + Zr2Si + Zr5Si3 were included in this study. The compounds Zr2Fe and Zr5Si3 which were marked as unstable phases at 580 ℃ in the available Zr-Fe and Zr-Si phase diagrams were observed, While the compound Zr3Si which was marked as stable phase in the Zr-Si phase diagram was not observed in this work.. It was shown that Zr2Fe and Zr2Si with same crystal structure were partially miscible. Solubility of Fe in Zr2Si is up to 5.95 at.% and solubility of Si in Zr2Fe is up to 6.38 at.%. ZrFe2 (cubic crystal structure) dissolves 3.11 at.% of Si.

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魏杰,沈劍韻,吳剛,賀子龍,程竹青,黃永章. Zr-Fe-Si體系580 ℃富鋯端相關(guān)系研究[J].稀有金屬材料與工程,2022,51(3):906~912.[weijie, shenjianyun, wugang, hezilong, chengzhuqing, huangyongzhang. Study on the phase relations in Zr-rich region of Zr-Fe-Si system at 580 ℃[J]. Rare Metal Materials and Engineering,2022,51(3):906~912.]
DOI：10.12442/j. issn.1002-185X.20210228

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  • 收稿日期:2021-03-18
  • 最后修改日期:2021-04-14
  • 錄用日期:2021-05-07
  • 在線發(fā)布日期: 2022-04-06
  • 出版日期: 2022-03-30