Effect of Y2O3 on acid resistance of alumina ceramic
Source abstract
Abstract
Abstract This work aimed to improve the acid resistance of an alumina ceramic. Acid corrosion of alumina ceramic composed of Al 2 O 3 -CaCO 3 -SiO 2 -MgO-Y 2 O 3 (ACSMY) was investigated in a hydrochloric-hydrofluoric acid solution at 65 °C for 30 min. The effect of Y 2 O 3 content on sintering temperature, density, and acid solubility were discussed. The composition and microstructure of this material were analyzed. The acid solubilities of minor crystal phases (Y 3 Al 5 O 12 , CaAl 12 O 19 , Ca 2 Al 2 SiO 7 , and CaAl 2 Si 2 O 8 ) and the effect of them on acid resistance of this alumina ceramic were studied. The results showed that Y 2 O 3 additive can enhance density and change the type of phases. Phases with good acid resistance and dense structure lead to a crust formed on the surface of ceramic during acid corrosion. The crust can effectively protect the interior structure of the sample from acid solution, and then improve the acid resistance of the material.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced ceramic materials synthesis · Nuclear materials and radiation effects · Concrete and Cement Materials Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (26)
Show source-provided references
1. Corrosion of ceramics for vinasse gasification in supercritical water10.1016/j.jeurceramsoc.2012.03.007 ↗
2. Corrosion of engineering ceramic materials by molten iron Part II: alumina
3. Oxidation and corrosion of silicon nitride ceramics with different sintering additives at 1200 and 1500°C in air, water vapour, SO2 and HCl environments – A comparative study10.1016/j.corsci.2008.12.014 ↗
4. Corrosion resistance of ultra-high purity porous alumina ceramic support10.1016/j.matlet.2014.12.082 ↗
5. Z.Qiang, L.Rong, Development of Structural Ceramics for Industry Use, in: Proceedings of the 2011 China Functional Materials Technology and Industry Forum, 3, 2011, pp. 858–863..
6. Jianhong · 2005
7. Study of Alumina Ceramic and its Acid Corrosion Resistance
8. Hydrothermal corrosion of alumina ceramics10.1111/j.1151-2916.1997.tb03258.x ↗
9. Corrosion of alumina ceramics in acidic aqueous solutions at high temperatures and pressures10.1023/A:1026714218522 ↗
10. Corrosion behavior of alumina ceramics in aqueous HCl and H2SO4 solutions10.1016/j.corsci.2007.10.008 ↗
11. Dissolution of alumina ceramics in HCl aqueous solution10.1016/j.ceramint.2008.11.007 ↗
12. Corrosion of ceramics in aqueous hydrofluoric acid10.1111/j.1151-2916.2000.tb01348.x ↗
13. The effect of corrosion and erosion on ceramic materials10.1016/S0010-938X(97)86100-8 ↗
14. Corrosion of glass, ceramics and ceramic superconductors: principles, testing
15. The corrosion resistance of zirconia and almina ceramics
16. Quaternary system Al2O3-CaO-MgO-SiO2: i, Study of the crystallization volume of Al2O310.1111/j.1151-2916.2003.tb03630.x ↗
17. Effect of Y2O3 additives on the wet abrasion resistance of an alumina-based grinding medium10.1016/j.wear.2016.03.010 ↗
18. Corrosion mechanism of polycrystalline corundum and calcium hexaluminate by calcium silicate slags10.1016/j.jeurceramsoc.2008.08.031 ↗
19. Dopant distribution in rare-earth-doped alumina10.1111/j.1151-2916.1997.tb02840.x ↗
20. Influence of yttrium on microstructure and point defects in α-Al2O3 in relation to oxidation10.1007/BF01352215 ↗
21. Yttrium Diffusion in α-alumina single crystal10.1016/S0955-2219(97)00170-2 ↗
22. Effect of yttrium and lanthanum on the final-stage sintering behavior of ultrahigh-purity alumina10.1111/j.1151-2916.1997.tb03084.x ↗
23. Influence of doping on the densification rate of high-purity alumina ceramics
24. Application study of rare earth in high-alumina ceramic
25. Yttria doping and sintering of submicrometer-grained α-Alumina10.1111/j.1151-2916.1996.tb08950.x ↗
26. Yttrium segregation and YAG precipitation at surfaces of yttrium- Doped α-Al2O310.1111/j.1151-2916.1986.tb04839.x ↗