Preparation and sintering of Al2O3 - Doped magnesium aluminate spinel

Minh Vu, Richard Haber, Hasan Gocmez

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

Aluminum oxide was uniformly coated on the surface of the spinel particles by a precipitation method followed by a heat treatment at 1200°C for two hours. The powder was then spark plasma sintered at temperatures as low as 1250-1350°C. The characterization of the coated powder and sintered pellets was carried out by scanning electron microscopy, X-ray diffraction, micro indentation, and light transmittance techniques. The in-line transmittance of 65.5% at 550nm, and the HV1 value of 15.58 ± 0.14 GPa were achieved for spinel doped with 3wt% Al2O3 and SPSed at 1350°C. Higher hardness values, HV1 ≥ 16GPa, were obtained at lower SPS temperatures.

Original languageEnglish (US)
Title of host publicationAdvances in Ceramic Armor VIII - A Collection of Papers Presented at the 36th International Conference on Advanced Ceramics and Composites, ICACC 2012
Pages93-103
Number of pages11
Edition5
Publication statusPublished - Apr 8 2013
EventAdvances in Ceramic Armor VIII - 36th International Conference on Advanced Ceramics and Composites, ICACC 2012 - Daytona Beach, FL, United States
Duration: Jan 22 2012Jan 27 2012

Publication series

NameCeramic Engineering and Science Proceedings
Number5
Volume33
ISSN (Print)0196-6219

Other

OtherAdvances in Ceramic Armor VIII - 36th International Conference on Advanced Ceramics and Composites, ICACC 2012
CountryUnited States
CityDaytona Beach, FL
Period1/22/121/27/12

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All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

Cite this

Vu, M., Haber, R., & Gocmez, H. (2013). Preparation and sintering of Al2O3 - Doped magnesium aluminate spinel. In Advances in Ceramic Armor VIII - A Collection of Papers Presented at the 36th International Conference on Advanced Ceramics and Composites, ICACC 2012 (5 ed., pp. 93-103). (Ceramic Engineering and Science Proceedings; Vol. 33, No. 5).