Errata: Activation energy for the reaction of nickel-carbon melts with alumina
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AGOCMe ) and h U,V in many U - V - O s y s t e m s . 2~ But data are r a r e for the activity coefficient of oxygen in t e r n a r y and higher o r d e r alloy s y s t e m s . It is hoped that e x p e r i m e n t a l investigation may be c a r r i e d out to t e s t the validity of Eq. [9] for the m e t a l - o x y g e n systems.
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Fig. 5 - T h e effect of a f o u r t h a l l o y i n g e l e m e n t on the s o l u b i l i t y of nitrogen in stainless steel (Fe-18-Cr-8-Ni) at 1873 K and PN2 = 1 atm; c o m p a r i s o n b e t w e e n the p r e d i c t e d values according to Eq. [9] and the e x p e r i m e n t a l data of Small and Pehlke 2 7 The solid lines are the e x p e r i m e n t a l values and the dashed lines are the p r e d i c t e d values.
e l e m e n t is good. In v i e w of the fact that many of the needed data in utilizing Eq. [9] are e s t i m a t e d v a l u e s , it is s u r p r i s i n g to find good a g r e e m e n t b e t w e e n the p r e d i c t e d and m e a s u r e d v a l u e s . The r e a s o n for the large d i s c r e p a n c y for the effect of Nb in the activity coefficient of N may be due to the i n c o r r e c t v a l u e s of AGN(Nb ) and h U,V p a r a m e t e r s used. It is noteworthy to point out that c o n s i d e r a b l y m o r e r e l i a b l e data are available in the literature for
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