RT Journal Article
SR Electronic
A1 Školáková, Andrea
A1 Salvetr, Pavel
A1 Novák, Pavel
T1 Thermal Analysis of NiAl30 Powder Mixture
JF Manufacturing Technology Journal
YR 2018
VO 18
IS 5
SP 828
OP 832
DO 10.21062/ujep/185.2018/a/1213-2489/MT/18/5/828
UL https://journalmt.com/artkey/mft-201805-0023.php
AB NiAl alloys belong to the group of modern materials for high temperature application due to their low density, excellent thermal stability and oxidation resistance. They could be used as high temperature components which are usually made of nickel superalloys, heat-resistant steel or even cobalt superalloys. Production of these alloys is relatively simple and moreover, they could be used at higher temperatures exceeding 1000 °C. However, their high melting points and poor casting properties complicate the production by melt-metallurgy process. Powder metallurgy and reactive sintering were found to be a suitable replacement for melt-metallurgy. Many phases form during reactive sintering and reaction conditions of their formation are not known or are contradictory. In this work, thermal analysis of NiAl30 (in wt. %) powder mixture was studied. Results offer the effect of heating rate on reaction temperatures, microstructure and phase composition.