The effect of pulsed current on TiB2 formed by reactive consolidation between titanium and boron is reported in this paper. This consolidation was performed using the plasma pressure compaction (P2C) technique. A comparison between the pulsed and control samples reveals that pulsed current reduces grain growth (pulsed samples had an average grain size of 2·79 μm compared to 5·99 μm) while increasing sintering rates (pulsed samples were on average 15·5% more dense). The reduced grain growth and increased densification is due to the removal of adsorbed oxygen from the surface of the powder.
Get full access to this article
View all access options for this article.
References
1.
BergerM. and HOGMARKS.: SU7f. Coat. Technol., 2002, 149, 14–20.
2.
DevyatkinS. V. and KAPTAYG.: J. Solid State Chem., 2000, 154, 107–109.
3.
BaikS. and BECHERP. F.: J. Am. Ceram. Soc., 1987, 70, (8), 527–530.
4.
AzconaI., SANCHEZJ. M. and CASTROF.: Powder Metall., 2001, 44, (2), 133–138.
5.
LiL.-H., KIMH.-E. and KANGE. S.: J. Eur. Ceram. Soc., 2002, 22.
6.
WangW., FUZ., WANGH. and YUANR.: J. Eur. Ceram. Soc., 2002, 22, 1045–1049.
7.
SanchezJ. M., ITURRIZAI., ECHEBERRIAJ. and GONDZALEZR.: Proc. 1st Int. Conf. on ‘Ceramic and metal matrix composites’, CCMC 96. Part 2 (of 2). San Sebastian, Spain. Sept. 1996.
8.
EinarsrudM.-A., HAGENE., PETTERSENG. and GRANDET.: J. Am. Ceram. Soc., 1997, 80, (12), 3013–3020.
9.
ParkJ.-H., KOHY.-H., KIMH.-E., HWANGC. S. and KANGE. S.: J. Am. Ceram. Soc., 1999, 82, (11), 3037–3042.
10.
TorizukaS., STAOK., NISHIOH. and KISHIT.: J. Am. Ceram. Soc., 1665, 78, (6), 1606–1610.
11.
FerberM. K., BECHERP. F. and FINCHC. B.: Comm. Am. Ceram. Soc., Jan. 1983, c2—c4.
12.
QuabdesselamM and MUNIRZ.: J. Mater. Sci., 1987, 22, 1799-1807.
13.
BrodkinD., KALIDINDIS. R., BARSOUMM. W. and ZAVALIANGOSA.: J. Am. Ceram. Soc., 1996, 79, (7), 1945–1952.
