RT Journal Article
SR Electronic
A1 Luptáková, Natália
A1 Ballógová, Beáta
A1 Dymáček, Petr
T1 Compressive Creep Testing of Composites on the Based of MoSi2 - SiC Nanoparticles
JF Manufacturing Technology Journal
YR 2015
VO 15
IS 3
SP 377
OP 380
DO 10.21062/ujep/x.2015/a/1213-2489/MT/15/3/377
UL https://journalmt.com/artkey/mft-201503-0021.php
AB The aim of this study is to investigate the creep resistance of molybdenum disilicide (MoSi2-SiC) based composites with different types of embedded particles. The materials were prepared via powder metallurgy using high temperature controlled reaction sintering (CRS). The creep experiments were performed in uniaxial compression at constant stress in the temperature range from 1273 K (1000 °C) to 1473 K (1200 °C) for applied stress from 50 to 100 MPa. Creep was tested by stepwise loading: in each step, the load was changed to a new value after steady state creep rate had been established. The applied stress dependences of the creep rate at different temperatures were analyzed in terms of stress exponent (n) and activation energy (Q). Possible rate-controlling mechanisms were suggested.