Effects of pyrolusite additive on the microstructure and mechanical strength of corundum–mullite ceramics
Source abstract
Abstract
Abstract Corundum–mullite ceramics have been successfully synthesized by using the raw materials of bauxite and kaolin clay. The effects of pyrolusite additive on the microstructure and mechanical strength of the corundum–mullite duplex ceramics were systematically investigated. The results show that the duplex ceramics exhibit the optimal performance with the amount of 4 wt% additives at 1350 °C. The liquid glass phases appear during the sintering process due to the presence of the impurities in pyrolusite powder, which is beneficial to the growth of crystal, the gap decrease of grain boundary and pores, and the improvement of compressive strength. Moreover, the component of MnO 2 could lead to the distortion of lattice, and further improve the mechanical strength via a solid solution strengthening mechanism.
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.
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