studies of adiabatic espansions of Hz-0:~ and Hz-Oz-NZ gas mixtures have revealed the formation of the species Hz.02 at concentrations of the order o?' 10 +-lo4 mole fraction. This species is believed to be a relatively weakly bound isomer which is less stabIe than t1202, the cOrnman form of hydroge
Sintering of Cr2O3 in H2/H2O Gas Mixtures
β Scribed by T Li; R.J Brook; B Derby
- Book ID
- 108473750
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 451 KB
- Volume
- 19
- Category
- Article
- ISSN
- 0955-2219
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The sulfidation of Fe-20%Cr-30%Mn, Fe-25%Cr-20%Mn and Fe-25%Cr was studied at 700 "C in H2-H2S and the oxidation and sulfidation in H2-H,0-H,S after preoxidation in H,-H,O. The sulfidation rate is strongly increased for the Mn-containing alloys, layers of (Mn,Cr)S and (Mn,Fe)Cr2S4 are formed. Also
Durch Auflosen von reinem Chromioxyd in Salpetersaure I ) , Eindampfen der dunkelblauen, stark sauren Flussigkeit auf einer Asbestplatte und schliesslich auf dein Wasserbade unter ofterem Umruhren, bis der Salpetersauregeruch fast verschwunden ist, bekommt man nach dem Auflijsen in Wasser eine dunke