3;放電等離子燒結;摻雜;熱電性能"/> 0.96D0.04)MnO3(D=Ca, Sr, Rb, Sm)氧化物粉末后,先分別采用氬氣氣氛的放電等離子燒結和空氣氣氛的常壓燒結制備出CaMnO3(CMO)塊體,并對其相組成進行分析,選擇出更為優(yōu)異的CaMnO3塊體制備方法。再進一步制備出(Ca0.96D0.04)MnO3(D=Sr, Rb, Sm)氧化物塊體,最后對(Ca0.96D0.04)MnO3(D=Ca, Sr, Rb, Sm)塊體的物相組成、顯微組織和熱電性能進行測試分析。實驗結果表明：氬氣氣氛放電等離子燒結制備的CaMnO3塊體發(fā)生物相分解,原因是放電等離子燒結的燒結環(huán)境貧氧；空氣氣氛的常壓燒結可以得到物相較純凈的(Ca0.96D0.04)MnO3(D=Ca, Sr, Rb, Sm)塊體；在整個測試溫度范圍內,(Ca0.96D0.04)MnO3(D= Sr, Rb, Sm)的ZT值在873K時達到最大,分別為0.11、0.08和0.07,相比于未摻雜試樣提高了約1.3~2.2倍。"/>

最新色国产精品精品视频,中文字幕日韩一区二区不卡,亚洲有码转帖,夜夜躁日日躁狠狠久久av,中国凸偷窥xxxx自由视频

+高級檢索
(Ca0.96D0.04)MnO3(D=Ca, Sr, Rb, Sm)氧化物的制備和熱電性能研究
作者:
作者單位:

1.合肥工業(yè)大學材料科學與工程學院;2.河南城建學院數(shù)理學院

作者簡介:

通訊作者:

中圖分類號:

基金項目:

國家自然科學(51572066)和第一屆河南省自然科學基金(162300410007)項目資助


Preparation and thermoelectric properties of (Ca0.96D0.04)MnO3(D=Ca, Sr, Rb, Sm)
Author:
Affiliation:

Anhui Provincial Key Lab of Advanced Functional Materials and Devices,College of Materials Science and Engineering,Hefei University of Technology,Hefei

Fund Project:

  • 摘要
    • |
  • 圖/表
    • |
  • 訪問統(tǒng)計
    • |
  • 參考文獻
    • |
  • 相似文獻
    • |
  • 引證文獻
    • |
  • 資源附件
    • |
  • 文章評論
    摘要:

    利用溶膠凝膠法制備出(Ca0.96D0.04)MnO3(D=Ca, Sr, Rb, Sm)氧化物粉末后,先分別采用氬氣氣氛的放電等離子燒結和空氣氣氛的常壓燒結制備出CaMnO3(CMO)塊體,并對其相組成進行分析,選擇出更為優(yōu)異的CaMnO3塊體制備方法。再進一步制備出(Ca0.96D0.04)MnO3(D=Sr, Rb, Sm)氧化物塊體,最后對(Ca0.96D0.04)MnO3(D=Ca, Sr, Rb, Sm)塊體的物相組成、顯微組織和熱電性能進行測試分析。實驗結果表明：氬氣氣氛放電等離子燒結制備的CaMnO3塊體發(fā)生物相分解,原因是放電等離子燒結的燒結環(huán)境貧氧；空氣氣氛的常壓燒結可以得到物相較純凈的(Ca0.96D0.04)MnO3(D=Ca, Sr, Rb, Sm)塊體；在整個測試溫度范圍內,(Ca0.96D0.04)MnO3(D= Sr, Rb, Sm)的ZT值在873K時達到最大,分別為0.11、0.08和0.07,相比于未摻雜試樣提高了約1.3~2.2倍。

    Abstract:

    The (Ca0.96D0.04)MnO3(D=Ca, Sr, Rb, Sm) oxide powders were prepared by sol-gel method firstly, and the CaMnO3(CMO) bulk samples were prepared thereafter by spark plasma sintering in argon atmosphere and air atmospheric sintering at ordinary pressure respectively. After analyzing their phase compositions, the better preparation method of CaMnO3 bulk samples are selected and then the (Ca0.96D0.04) MnO3 (D=Sr, Rb, Sm) oxide bulks were prepared. Finally, the phase composition, microstructure and thermoelectric properties of (Ca0.96D0.04) MnO3 (D=Ca, Sr, Rb, Sm) bulk samples are measured and analyzed. The results show that the CaMnO3(CMO) bulk samples prepared by spark plasma sintering in argon atmosphere have occurred phase decomposition, which is due to the SPS poor oxygen sintering environment. High quality (Ca0.96D0.04)MnO3(D=Ca, Sr, Rb, Sm) bulk samples with single phase can be prepared by atmospheric sintering at ordinary pressure. The dimensionless figure of merit ZT is improved with peak values of 0.11,0.08,0.07 at 873K for (Ca0.96D0.04)MnO3(D= Sr, Rb, Sm) bulk samples respectively, which are about 1.3~2.2 times higher than that of the un-doped samples.

    參考文獻
    相似文獻
    引證文獻
引用本文

張靜文,張飛鵬,楊新宇,王盼,楊之,張久興.(Ca0.96D0.04)MnO3(D=Ca, Sr, Rb, Sm)氧化物的制備和熱電性能研究[J].稀有金屬材料與工程,2019,48(2):644~649.[ZHANG Jingwen, ZHANG Feipeng, YANG Xinyu, WANG Pan, YANG Zhi, ZHANG Jiuxing. Preparation and thermoelectric properties of (Ca0.96D0.04)MnO3(D=Ca, Sr, Rb, Sm)[J]. Rare Metal Materials and Engineering,2019,48(2):644~649.]
DOI：10.12442/j. issn.1002-185X.20170591

復制
文章指標
  • 點擊次數(shù):
  • 下載次數(shù):
  • HTML閱讀次數(shù):
  • 引用次數(shù):
歷史
  • 收稿日期:2017-07-04
  • 最后修改日期:2017-08-05
  • 錄用日期:2017-08-18
  • 在線發(fā)布日期: 2019-03-15
  • 出版日期: