Effect of Eu2O3 on sintering densification and corrosion resistance of magnesium aluminate spinel

2021 ◽  
Author(s):  
Man Zhang ◽  
Jianhua Liu ◽  
Junwen Zhou
Keyword(s):  
Corrosion Resistance ◽  
Magnesium Aluminate ◽  
Magnesium Aluminate Spinel

Effects of In Situ Formation of Magnesium Aluminate Spinel on Performance of Modified Sizing Nozzle

2013 ◽  
Vol 750-752 ◽  
pp. 1130-1136
Author(s):  
Guang Liang Yuan ◽  
Qun Hu Xue ◽  
Xiang Li ◽  
Yuan Yang
Keyword(s):  
Corrosion Resistance ◽  
Sol Gel ◽  
Magnesium Aluminate ◽  
Magnesium Aluminate Spinel ◽  
Sintering Process ◽  
Stabilized Zirconia ◽  
Composite Powders ◽  
The Stability ◽  
Better Than

The modified sizing nozzle with excellent performances was successfully prepared by using of Mg,Y-PSZ as aggregates, Mg,Y,Ca-PSZ as fines, adding a certain amount of Al2O3-ZrO2 composite powders prepared by sol-gel. Effects of magnesium aluminate spinel in-situ synthesized in modified sizing nozzle on its performances were studied in this experiment. The results show that, the content of cubic zirconia in the sizing nozzle was decreased with the increasing of Al2O3-ZrO2 composite powders; the samples of modified sizing nozzle have no diameter-expanded after 30 hours service. The use effects are obviously better than that of Al2O3-ZrO2 composite powders free. The main reason is that a new bond phase magnesium aluminate spinel was in-situ generated through the reaction between Al2O3 in Al2O3-ZrO2 composite powders and the stabilizer MgO from partially stabilized zirconia in the sintering process at high temperature. The spinels embedded in the substrate of zirconia grow further and fill between zirconia particles. This prevents the stabilizer of CaO further desolventizing and also stop losing the eutectics formed by the reaction with compositions of molten steel. Therefore, the stability of zirconia and the corrosion resistance of the sizing nozzle were improved.

scholarly journals Synthesis and characterization of a new ZIF-67@MgAl2O4 nanocomposite and its adsorption behaviour

RSC Advances ◽  
2021 ◽  
Vol 11 (22) ◽  
pp. 13245-13255
Author(s):  
Mehdi Davoodi ◽  
Fatemeh Davar ◽  
Mohammad R. Rezayat ◽  
Mohammad T. Jafari ◽  
Mehdi Bazarganipour ◽  
...  
Keyword(s):  
Room Temperature ◽  
Magnesium Aluminate ◽  
Synthesis And Characterization ◽  
Magnesium Aluminate Spinel ◽  
Adsorption Behaviour ◽  
Zeolitic Imidazolate Framework ◽  
Simple Method

New nanocomposite of zeolitic imidazolate framework-67@magnesium aluminate spinel (ZIF-67@MgAl2O4) has been fabricated by a simple method at room temperature with different weight ratios.

scholarly journals Optical glass-ceramics based on nanosized crystals of magnesium aluminate spinel doped with iron ions

2020 ◽  
Vol 1697 ◽  
pp. 012156
Author(s):  
V Bukina ◽  
O Dymshits ◽  
I Alekseeva ◽  
M Tsenter ◽  
S Zapalova ◽  
...  
Keyword(s):  
Optical Glass ◽  
Glass Ceramics ◽  
Magnesium Aluminate ◽  
Magnesium Aluminate Spinel ◽  
Iron Ions ◽  
Nanosized Crystals

Transparency of zirconia and magnesium aluminate spinel ceramics manufactured by SPS technique

Ifost ◽  
2013 ◽  
Author(s):  
Khasanov Oleg ◽  
Dvilis Edgar ◽  
Kachaev Artem ◽  
Khasanov Alexey ◽  
Polisadova Elena
Keyword(s):  
Magnesium Aluminate ◽  
Magnesium Aluminate Spinel

Flash-sintering of magnesium aluminate spinel (MgAl2O4) ceramics

2016 ◽  
Vol 100 (2) ◽  
pp. 554-562 ◽  
Author(s):  
Hidehiro Yoshida ◽  
Papiya Biswas ◽  
Roy Johnson ◽  
Mantravadi Krishna Mohan
Keyword(s):  
Magnesium Aluminate ◽  
Magnesium Aluminate Spinel ◽  
Flash Sintering ◽  
Spinel Mgal2o4

Performance Studies on In Situ Spinel Solid Solution Bonded Periclase Refractories

2014 ◽  
Vol 633 ◽  
pp. 245-248
Author(s):  
Xin Lin ◽  
Yong Li ◽  
Yan Jing Li ◽  
Jun Jie Zhang ◽  
Chang He Gao ◽  
...  
Keyword(s):  
Solid Solution ◽  
Phase Composition ◽  
Performance Studies ◽  
Magnesium Aluminate ◽  
Spinel Solid Solution ◽  
Magnesium Aluminate Spinel ◽  
Crushing Strength ◽  
Cold Crushing Strength ◽  
Shock Resistance

Specimens were prepared using iron-rich magnesia (3~1 mm、≤1 mm) and high purity magnesia (≤0.088 mm) as the main starting materials, adding tabular alumina at different size (3~2、2~1、≤1 mm) and content:3%、6%、9%、12%、15% to discover the influence of tabular alumina on sample performance. Phase composition and microstructure were also analyzed. The results show that specimen with content of 6% of corundum possessed the best comprehensive performance:apparent porosity 17%, bulk density 2.95 g·cm-3, cold crushing strength 74 MPa, refractoriness under load 1700 °C, heat shock resistance of up to 18 times. The formations of magnesium aluminate spinel and hercynite solid solution were enhanced by Fe ion at high temperatures in the iron-rich magnesia-corundum system at the presence of iron oxides, which are able to largely dissolved in periclase.

Low cost foam-gelcasting preparation and characterization of porous magnesium aluminate spinel (MgAl2O4) ceramics

2016 ◽  
Vol 42 (16) ◽  
pp. 18215-18222 ◽  
Author(s):  
Xiangong Deng ◽  
Junkai Wang ◽  
Jianghao Liu ◽  
Haijun Zhang ◽  
Lei Han ◽  
...  
Keyword(s):  
Low Cost ◽  
Magnesium Aluminate ◽  
Magnesium Aluminate Spinel ◽  
Porous Magnesium ◽  
Spinel Mgal2o4
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