MgAlON-MgO ceramic was in-situ synthesized at 1600℃ from spent MgO-C brick by pressureless sintering towards friction material and refractory applications, respectively. The flexural strength of MgAlON-MgO ceramic reaches as high as 172MPa with 11.1% utilization ratio of spent MgO-C brick. Moreover, MgAlON-MgO ceramic still has a good flexural strength up to 46MPa when utilization ratio of spent MgO-C brick increases to 52.9%. The impurities introduced by the spent brick distribute in MgAlON-MgO ceramic in the form of CaMgSiO4 and MgFe2O4. CaMgSiO4 increases the density of MgAlON-MgO ceramic and subsequently enhance its flexural strength, while MgFe2O4 has no more obvious effect on those of the ceramic. Hence, MgAlON-MgO ceramic with different strength can be controllably prepared by simply adjusting utilization ratio of spent MgO-C brick, which maybe use as the friction material and refractory.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9
Loading...
Posted 18 Mar, 2021
Posted 18 Mar, 2021
MgAlON-MgO ceramic was in-situ synthesized at 1600℃ from spent MgO-C brick by pressureless sintering towards friction material and refractory applications, respectively. The flexural strength of MgAlON-MgO ceramic reaches as high as 172MPa with 11.1% utilization ratio of spent MgO-C brick. Moreover, MgAlON-MgO ceramic still has a good flexural strength up to 46MPa when utilization ratio of spent MgO-C brick increases to 52.9%. The impurities introduced by the spent brick distribute in MgAlON-MgO ceramic in the form of CaMgSiO4 and MgFe2O4. CaMgSiO4 increases the density of MgAlON-MgO ceramic and subsequently enhance its flexural strength, while MgFe2O4 has no more obvious effect on those of the ceramic. Hence, MgAlON-MgO ceramic with different strength can be controllably prepared by simply adjusting utilization ratio of spent MgO-C brick, which maybe use as the friction material and refractory.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9
Loading...