Journal of Inorganic Materials, Volume. 34, Issue 8, 873(2019)
Figures & Tables(12)
5. Cross-sectional SEM image of oxide layer structure of MgB2 pellet after being heated up to 1665 K
9. TG and DTA curves of amorphous boron oxidation under ultra-high temperature[24]
Table 1. Combustion heats and combustion efficiencies of amorphous boron and MgB2
View tableView in ArticleTable 1. Combustion heats and combustion efficiencies of amorphous boron and MgB2
Sample Theoretical combustion heat /(J·g-1) Experimental combustion heat /(J·g-1) Combustion efficiency /% B -58826 -22465±114 38 MgB2 -38781 -23943±788 62
Table 2.
Chemical analytical results of MgB2 oxidation residues
View tableView in ArticleTable 2.
Chemical analytical results of MgB2 oxidation residues
Temperature
/K${{n}_{\text{MgO}}}/{{n}_{{{\text{B}}_{\text{2}}}\text{O}}}_{_{\text{3}}}$ Fraction of
unoxidized Mg/mol%Fraction of unoxidized boron/mol% ${{n}_{\text{B}}}/{{n}_{\text{Mg}}}$ 1165 1.14 : 1 81.11 83.38 2.06 : 1 1300 3.04 : 1 22.73 74.62 6.56 : 1 1405 1.52 : 1 6.35 38.35 12.08 : 1 1520 1.26 : 1 2.14 22.30 20.89 : 1
Table 3. EDS results of the internal and external oxide layer of MgB2 pellet
View tableView in ArticleTable 3. EDS results of the internal and external oxide layer of MgB2 pellet
Position B/mol% O/mol% Mg/mol% Internal 11.78 51.22 37.00 External — 56.43 43.57
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Yang GUO, Wei ZHANG, Xing ZHOU, Lei DENG.
Paper Information
Category: RESEARCH PAPER
Received: Sep. 14, 2018
Accepted: --
Published Online: Sep. 26, 2021
The Author Email: ZHANG Wei (wzhang_nudt@nudt.edu.cn), ZHOU Xing (xingzhou_nudt@nudt.edu.cn)
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