Microstructure and performances of Gd2O3-added corundum–mullite ceramic composites for concentrated solar power applications
Source abstract
Abstract
Abstract Gd2O3 was added to increase the properties of corundum–mullite ceramic composites by enhancing the microstructural densification using coal-series kaolin and α-Al2O3. The effect of Gd2O3 addition on the microstructure and properties of ceramic composites was explored. The results showed that the formation of Gd2O3–Al2O3–SiO2 liquid phase could improve the bending strength, hardness, and acid resistance, since such liquid phase promoted microstructural densification via a reaction between Gd2O3 and Al2O3–SiO2 binary system in this Al2O3-rich and SiO2-poor system. The precipitation of mullite and gadolinium disilicate during thermal shocks resulted in enhanced bending strength. In particular, sample AG5 (80 wt% Al2O3, 20 wt% coal-series kaolin, and 5 wt% additional Gd2O3) sintered at 1550 °C was considered as candidate for heat transmission pipeline for the optimum comprehensive performance.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced ceramic materials synthesis · Recycling and utilization of industrial and municipal waste in materials production · Nuclear materials and radiation effects
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (31)
Show source-provided references
1. Preparation and characterization of alumina/calcium-hexaluminate ceramic composites from ferrotitanium slag10.1016/j.jeurceramsoc.2020.05.004 ↗
2. Properties of granular materials as heat transfer and storage medium in CSP application10.1016/j.solmat.2015.06.037 ↗
3. Advances in solar thermal electricity technology10.1016/S0038-092X(03)00102-6 ↗
4. Modelling creep behaviour and failure of 9Cr−0.5Mo−1.8W−VNb steel10.1016/j.ijpvp.2009.03.006 ↗
5. In-situ synthesis of mullite−SiCw composite ceramics in Li2O−Al2O3−SiO2 ternary system for solar heat transmission pipeline10.1016/j.jallcom.2018.12.364 ↗
6. Study on synthesis of mullite by high−purity kaolin in coal
7. Preparation and thermal shock resistance of high temperature zirconia−corundum−mullite composite ceramics
8. Microstructural evolution, phase transformation, and variations in physical properties of coal series kaolin powder compact during firing10.1016/j.clay.2015.07.031 ↗
9. Fabrication and properties of porous mullite ceramics from calcined carbonaceous kaolin and α-Al2O310.1016/j.ceramint.2009.10.006 ↗
10. Mullite whisker network reinforced ceramic with high strength and lightweight10.1016/j.jallcom.2017.01.075 ↗
11. Effect of La2O3 additives on the strength and microstructure of mullite ceramics obtained from coal gangue and α-Al2O310.1016/j.ceramint.2013.02.016 ↗
12. Rare−earth oxide additives for the sintering of silicon carbide10.1016/j.diamond.2013.07.003 ↗
13. Phase relations in the Si–Al–Gd–O–C system10.1016/j.ceramint.2015.10.064 ↗
14. Temperature-dependent viscosity of Si REAl−based glasses as a function of N:O and RE: Al ratios (RE = La, Gd, Y, and Lu)10.1111/j.1151-2916.2004.tb07722.x ↗
15. Ceramic behavior of ball clay with gadolinium oxide (Gd2O3) addition10.1016/j.clay.2017.06.021 ↗
16. Preparation and corrosion resistance of cordierite–spodumene composite ceramics using zircon as a modifying agent10.1016/j.ceramint.2018.07.205 ↗
17. Mechanism of formation of TiO2−doped mullites from heated single-phase gels investigated by structural and microstructural parameters10.1111/j.1551-2916.2008.02711.x ↗
18. Low temperature molten–salt synthesis and characterization of nanocrystalline mullite whiskers from coal gangue10.4028/www.scientific.net/MSF.724.41 ↗
19. Fabrication and characterization of cordierite-based glass−ceramic adhesives for bonding solar heat transmission pipelines10.1016/j.ceramint.2016.09.126 ↗
20. Phase relationships in the system of Gd2O3−Al2O3−SiO210.1016/S0925-8388(96)03121-0 ↗
21. Compositional dependence of properties of Gd2O3–SiO2–B2O3 glasses with high Gd2O3 concentration10.1016/j.jnoncrysol.2014.02.017 ↗
22. Effect of dolomite and spodumene on the performances of andalusite composite ceramics for solar heat transmission pipeline10.1016/j.ceramint.2015.05.155 ↗
23. Preparation and performance study of mullite/Al2O3 composite ceramics for solar thermal transmission pipeline10.1111/ijac.12584 ↗
24. Synthesis, characterisation and sintering behavior influencing the mechanical, thermal and physical properties of cordierite−doped TiO2
25. Low−temperature densification and mechanical properties of monolithic mullite ceramic10.1016/j.ceramint.2020.01.282 ↗
26. Effect of Y2O3 on acid resistance of alumina ceramic10.1016/j.ceramint.2017.01.023 ↗
27. The corrosion resistance of high ZrO2 fusion−cast Al2O3–ZrO2–SiO2 glass refractories in soda lime glass10.1007/BF01120038 ↗
28. Effect of some rare−earth oxides on structure, devitrification and properties of diopside based glasses10.1016/j.ceramint.2009.05.023 ↗
29. Thermal expansion of rare−earth pyrosilicates
30. Effect of Sm2O3 on microstructure, thermal shock resistance and thermal conductivity of cordierite−mullite−corundum composite ceramics for solar heat transmission pipeline10.1016/j.ceramint.2016.05.145 ↗
31. Preparation of translucent Gd2Si2O7:Ce polycrystalline thin plates and their scintillation performance for α-particles10.1016/j.optmat.2015.03.026 ↗