Kobalt(I)-Verbindungen / Cobalt(I) Compounds

Temperature-Dependent Young’s Modulus of TaC- and TiC-Strengthened Co-Re-Based Alloys

“…Assuming a melting temperature for the CoReCr-alloy of T m = 1833 K [13], the temperature dependency is −0.47 to −0.55. For comparison, the temperature dependency of Young's modulus for hcp cobalt is −0.69 (above the hcp/fcc transition temperature, the temperature dependency is stronger) [14]. For Re, it is −0.9 below 200 • C, slightly increasing with higher temperatures up to a value of −0.7 at about 600 • C (derived from [16]).…”

“…Pure cobalt has a room-temperature Young's modulus of 208 GPa [14,15]. Rhenium has a much higher Young's modulus of 466 GPa [16].…”

“…1550 • C at 25 at.% [8]. According to [14], the temperaturedependent decrease in Young's modulus is stronger for the fcc phase than for the hcp-phase in the case of pure cobalt. The increase in the melting temperature with increasing Re content and the very high Young's modulus of Re suggests that, with increasing Re content, Young's modulus also increases.…”