skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Synthesis of Al{sub 2}O{sub 3}-TiC and Al{sub 2}O{sub 3}-TiB{sub 2} composite powders by combustion method

Abstract

Fine {alpha}-Al{sub 2}O{sub 3}-TiC and {alpha}-Al{sub 2}O{sub 3}-TiB{sub 2} composite powders were synthesized by combustion reactions of the Al-TiO{sub 2}-C and Al-TiO{sub 2}-B{sub 2}O{sub 3} systems, respectively. The powders were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The powders were composed of {alpha}-Al{sub 2}O{sub 3} and TiC in the Al-TiO{sub 2}-C system and of {alpha}-Al{sub 2}O{sub 3} and TiB{sub 2} in the Al-TiO{sub 2}-B{sub 2}O{sub 3} system. In both cases, the composite powders as formed were very fine. Their mean particle size was about 1 {micro}m. However, the powders were susceptible for agglomeration, and clusters with a size of about 15 mm were formed. The size of agglomerates was very close to the mean particle size of the starting aluminum powder. Analysis of the SEM micrographs revealed that agglomeration of the powders decreased with an increased amount of alumina added as diluent. The latter effect was explained by the results of thermochemical calculations.

Authors:
;  [1];  [2]
  1. Hungarian Academy of Sciences, Budapest (Hungary). Research Lab. for Inorganic Chemistry
  2. Central South Univ. of Technology, Changsha (China). Dept. of Materials Science and Engineering
Publication Date:
OSTI Identifier:
218644
Report Number(s):
CONF-940468-
Journal ID: HTMSFP; ISSN 1080-1278; TRN: IM9619%%365
Resource Type:
Journal Article
Journal Name:
High Temperature and Materials Science
Additional Journal Information:
Journal Volume: 34; Journal Issue: 1-3; Conference: 8. international conference on high temperature materials chemistry, Vienna (Austria), 4-9 Apr 1994; Other Information: PBD: Aug-Dec 1995
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; COMPOSITE MATERIALS; SYNTHESIS; PARTICLE SIZE; ALUMINIUM OXIDES; TITANIUM CARBIDES; TITANIUM BORIDES; ALUMINIUM; CARBON; TITANIUM OXIDES; BORON OXIDES; COMBUSTION; SOLID CLUSTERS

Citation Formats

Liang, S, Szepvoelgyi, J, and Zheng, Z. Synthesis of Al{sub 2}O{sub 3}-TiC and Al{sub 2}O{sub 3}-TiB{sub 2} composite powders by combustion method. United States: N. p., 1995. Web.
Liang, S, Szepvoelgyi, J, & Zheng, Z. Synthesis of Al{sub 2}O{sub 3}-TiC and Al{sub 2}O{sub 3}-TiB{sub 2} composite powders by combustion method. United States.
Liang, S, Szepvoelgyi, J, and Zheng, Z. 1995. "Synthesis of Al{sub 2}O{sub 3}-TiC and Al{sub 2}O{sub 3}-TiB{sub 2} composite powders by combustion method". United States.
@article{osti_218644,
title = {Synthesis of Al{sub 2}O{sub 3}-TiC and Al{sub 2}O{sub 3}-TiB{sub 2} composite powders by combustion method},
author = {Liang, S and Szepvoelgyi, J and Zheng, Z},
abstractNote = {Fine {alpha}-Al{sub 2}O{sub 3}-TiC and {alpha}-Al{sub 2}O{sub 3}-TiB{sub 2} composite powders were synthesized by combustion reactions of the Al-TiO{sub 2}-C and Al-TiO{sub 2}-B{sub 2}O{sub 3} systems, respectively. The powders were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The powders were composed of {alpha}-Al{sub 2}O{sub 3} and TiC in the Al-TiO{sub 2}-C system and of {alpha}-Al{sub 2}O{sub 3} and TiB{sub 2} in the Al-TiO{sub 2}-B{sub 2}O{sub 3} system. In both cases, the composite powders as formed were very fine. Their mean particle size was about 1 {micro}m. However, the powders were susceptible for agglomeration, and clusters with a size of about 15 mm were formed. The size of agglomerates was very close to the mean particle size of the starting aluminum powder. Analysis of the SEM micrographs revealed that agglomeration of the powders decreased with an increased amount of alumina added as diluent. The latter effect was explained by the results of thermochemical calculations.},
doi = {},
url = {https://www.osti.gov/biblio/218644}, journal = {High Temperature and Materials Science},
number = 1-3,
volume = 34,
place = {United States},
year = {Tue Aug 01 00:00:00 EDT 1995},
month = {Tue Aug 01 00:00:00 EDT 1995}
}