Chapter 14. Relationship of Microstructure and Hardness for A12O3 Armor Materials
- Lisa Prokurat,
- Andrew Wereszczak,
- Edgar Lara-Curzio
Published Online: 26 MAR 2008
DOI: 10.1002/9780470291368.ch14
Copyright © 2007 The American Ceramics Society
Book Title
Advances in Ceramic Armor II: Ceramic Engineering and Science Proceedings, Volume 27, Issue 7
Additional Information
How to Cite
Demirbas, M. V. and Haber, R. A. (2008) Relationship of Microstructure and Hardness for A12O3 Armor Materials, in Advances in Ceramic Armor II: Ceramic Engineering and Science Proceedings, Volume 27, Issue 7 (eds L. Prokurat, A. Wereszczak and E. Lara-Curzio), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470291368.ch14
Publication History
- Published Online: 26 MAR 2008
- Published Print: 1 JAN 2006
Book Series:
ISBN Information
Print ISBN: 9780470080573
Online ISBN: 9780470291368
- Summary
- Chapter
- References
Keywords:
- dynamic performance;
- microstructural;
- hardness tests;
- tessellation analysis;
- geometric construction
Summary
In armor ceramics, it is hard to separate “good” from “bad”, with samples that have close density values. It is still unknown whether a slight change in residual porosity above 99.5%, namely the shape and dispersity of pores are detrimental to the dynamic performance. The method for solving this problem is based on spatial data analysis and subsequent mechanical tests. Three hot-pressed armor grade Al2O3 ceramic tiles were used for this purpose. Microstructural assessment was carried out using nearest neighbor distance distribution functions and tessellation analysis. Hardness tests were performed to assess the properties of the samples. Hardness maps were obtained by indentation of samples 100 times, forming a square array of 10×10 indents and presented as contour maps. The results from microstructural assessment and hardness tests were compared and some degree of correlation was observed between the microstructural analysis and hardness tests.