Page 717 - Corrosion Engineering Principles and Practice
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670 C h a p t e r 1 5 H i g h - Te m p e r a t u r e C o r r o s i o n 671
Temperature Range T 2 T 1 (K) (K) 700 298.15 3000 700 1000 298.15 2130 1000 2945 2130 2603 298.15 400 298.15 1600 400 400 298.15 1100 400 3000 298.15 5000 298.15
0.874 -1.138
D −9.033 −3.807 −11.201 −15.782 −7.632 −1.644 −0.335
0 0 0
16.828 −0.377 −16.698 0 7.59 0.222 −4.351 0 −7.222 −18.393 −3.105
C
0
Heat Capacity (Cp) B 0 2.556 22.966 15.531 0 24.451 25.33 3.979 46.689 18.552 7.686 3.895
A (J mol –1 K –1 ) 20.786 15.456 17.715 18.067 39.33 104.307 24.518 34.292 30.878 45.309 74.002 31.321
Entropy S (J mol –1 K –1 ) 174.305 – 23.64 – 7.95 81.199 239.266 – 269.24 – 266.169 205.146
Enthalpy H (kJ mol –1 ) 397.48 – 0 – 16.933 −1139.7 188.28 – −75.312 – −292.88 0 Thermochemical Data for the Cr-O System
State gas gas solid solid liquid solid gas gas gas gas gas gas
Species Cr Cr Cr 2 O 3 CrO CrO 2 CrO 3 O 2 TABLE 15.2
