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Development of AlN and TiB2 Composites with Nb2O5, Y2O3 and ZrO2 as Sintering Aids

Facultad de Ciencias Químicas e Ingeniería, Universidad Autónoma de Baja California, Calzada Tecnológico 14418, Mesa de Otay, Tijuana 22390, Mexico
Instituto de Cerámica y Vidrio, CSIC, C/Kelsen 5, Campus de Cantoblanco, 28049 Madrid, Spain
Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Ciudad Universitaria, A.P. 70-360, Ciudad de México 04510, Mexico
Author to whom correspondence should be addressed.
Academic Editor: Jai-Sung Lee
Materials 2017, 10(3), 324;
Received: 19 December 2016 / Revised: 8 March 2017 / Accepted: 13 March 2017 / Published: 22 March 2017
(This article belongs to the Section Advanced Composites)
The synthesis of AlN and TiB2 by spark plasma sintering (SPS) and the effect of Nb2O5, Y2O3 and ZrO2 additions on the mechanical properties and densification of the produced composites is reported and discussed. After the SPS process, dense AlN and TiB2 composites with Nb2O5, Y2O3 and ZrO2 were successfully prepared. X-ray diffraction analysis showed that in the AlN composites, the addition of Nb2O5 gives rise to Nb4N3 during sintering. The compound Y3Al5O12 (YAG) was observed as precipitate in the sample with Y2O3. X-ray diffraction analysis of the TiB2 composites showed TiB2 as a single phase in these materials. The maximum Vickers and toughness values were 14.19 ± 1.43 GPa and 27.52 ± 1.75 GPa for the AlN and TiB2 composites, respectively. View Full-Text
Keywords: park plasma sintering; composites; mechanical properties park plasma sintering; composites; mechanical properties
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González, J.C.; Rodríguez, M.Á.; Figueroa, I.A.; Villafuerte-Castrejón, M.-E.; Díaz, G.C. Development of AlN and TiB2 Composites with Nb2O5, Y2O3 and ZrO2 as Sintering Aids. Materials 2017, 10, 324.

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