Preparation and characterisation of closed-pore Al 2 O 3 -MgAl 2 O 4 refractory aggregate utilising superplasticity
Source abstract
Abstract
A novel high closed porosity Al2O3-MgAl2O4 refractory aggregate has been successfully fabricated by utilising superplasticity with Al2O3 and MgO as raw materials, SiC as high temperature pore-forming agent. The effects of the addition amounts of MgO and SiC on porosity, sintering behaviours, phase composition, pore size distribution and microstructure of the refractory aggregate have been investigated. The formation mechanism of the closed pore in the refractory aggregate has been discussed. The results showed that the MgO can improve the superplastic deformation ability of Al2O3-based ceramic at high temperature. With the content of MgO and SiC increased, the closed porosity and the pore size increased. The oxidation of SiC improved the sinterability of materials at the initial stage of sintering, and then the released gases due to the further oxidation of SiC promoted the formation of closed pores by motivating the superplastic deformation ability of Al2O3-based materials.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advanced ceramic materials synthesis · Aluminum Alloys Composites Properties · Advanced materials and composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Metallurgy, Northeastern University, Shenyang, People’s Republic of China
School of Mechanical, Materials and Mechatronic Engineering, University of Wollongong, Wollongong, Australia
College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter, UK
Funding
the National Natural Science Foundation of China · Fundamental Research Funds for the Central Universities of China
References (30)
Show source-provided references
1. 10.1179/09679780422501267510.1179/096797804225012675 ↗
2. 10.1179/174367605X7349810.1179/174367605X73498 ↗
3. 10.1016/j.ceramint.2008.04.00210.1016/j.ceramint.2008.04.002 ↗
4. 10.1179/1743676115Y.000000001710.1179/1743676115Y.0000000017 ↗
5. 10.1016/j.ceramint.2013.07.06610.1016/j.ceramint.2013.07.066 ↗
6. 10.1016/S0272-8842(02)00047-010.1016/S0272-8842(02)00047-0 ↗
7. 10.1179/174367606X8164110.1179/174367606X81641 ↗
8. 10.1016/j.ceramint.2014.08.09910.1016/j.ceramint.2014.08.099 ↗
9. 10.1016/j.ceramint.2015.09.16710.1016/j.ceramint.2015.09.167 ↗
10. 10.1016/j.ceramint.2006.05.01910.1016/j.ceramint.2006.05.019 ↗
11. 10.1016/j.matlet.2011.02.06910.1016/j.matlet.2011.02.069 ↗
12. 10.1016/j.ceramint.2015.01.00910.1016/j.ceramint.2015.01.009 ↗
13. 10.1016/j.ceramint.2013.04.07210.1016/j.ceramint.2013.04.072 ↗
14. 10.1007/s12613-011-0461-610.1007/s12613-011-0461-6 ↗
15. 10.3139/146.11075710.3139/146.110757 ↗
16. 10.1016/j.ceramint.2005.11.00410.1016/j.ceramint.2005.11.004 ↗
17. 10.1016/j.ceramint.2011.01.01210.1016/j.ceramint.2011.01.012 ↗
18. 10.1111/j.1151-2916.2001.tb01065.x10.1111/j.1151-2916.2001.tb01065.x ↗
19. 10.1016/S0254-0584(03)00080-410.1016/S0254-0584(03)00080-4 ↗
20. 10.1111/j.1151-2916.2003.tb03367.x10.1111/j.1151-2916.2003.tb03367.x ↗
21. 10.1016/j.ceramint.2015.01.01610.1016/j.ceramint.2015.01.016 ↗
22. 10.1016/j.ceramint.2014.09.05610.1016/j.ceramint.2014.09.056 ↗
23. 10.1016/j.jeurceramsoc.2006.05.05510.1016/j.jeurceramsoc.2006.05.055 ↗
24. 10.1016/j.jeurceramsoc.2013.03.03310.1016/j.jeurceramsoc.2013.03.033 ↗
25. 10.1016/j.jallcom.2008.03.13610.1016/j.jallcom.2008.03.136 ↗
26. 10.2109/jcersj2.117.123310.2109/jcersj2.117.1233 ↗
27. 10.1016/j.jeurceramsoc.2006.03.00210.1016/j.jeurceramsoc.2006.03.002 ↗
28. 10.1016/S1359-6454(00)00376-110.1016/S1359-6454(00)00376-1 ↗
29. 10.1111/j.1151-2916.1991.tb06803.x10.1111/j.1151-2916.1991.tb06803.x ↗
30. 10.1016/S0272-8842(99)00033-410.1016/S0272-8842(99)00033-4 ↗