A study of densification and morphology in functionally graded materials of alumina ceramics doped with niobium oxide and silicon dioxide.

Authors

  • Anderson Alves Mota Instituto Militar de Engenharia
  • Alaelson Vieira Gomes Instituto Militar de Engenharia

DOI:

https://doi.org/10.22491/rmct.v40i2.10970.pt

Keywords:

Advanced Ceramics, Alumina, Niobium Oxide, Silicon Dioxide, Functionally Graded Materials

Abstract

Advanced Ceramic have several applications, among them we could highlight ballistic protection. This usage is mostly due to its mechanical strength and low weight. Alumina (Al2O3), given its characteristics such as easy to obtain and low production cost, represents one of the most researched and used for this purpose of use. However, every material has its own limitation of use, such as low density and bad strength when used without doping. Therefore, solutions have been researched to increase alumina density and improve microstructural to promote better ballistic performance. Even if the homogeneous material get better results, still there is some room for improvement on trying something new. One type of material which has been showing good development is Functionally Graded Materials that could promote a change in characteristics in the same material or that causes a material to behave similar to a ballistic system of several distinct layers, but with the advantage of having no stress concentrators as composites. Thus, this work aims to study the densification of Functionally Graded materials in conventional sintering and to observe microstructure characteristic of the layers in a Scanning Electron Microscope (SEM).

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Published

2025-10-31

How to Cite

Mota, A. A., & Gomes, A. V. (2025). A study of densification and morphology in functionally graded materials of alumina ceramics doped with niobium oxide and silicon dioxide. Revista Militar De Ciência E Tecnologia, 40(2). https://doi.org/10.22491/rmct.v40i2.10970.pt

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