Knudsen effusion technique and

Knudsen effusion technique and equation, vapor pressure determination. 100-101... 

Using the Knudsen effusion technique and highly purified samples of lindane [(y-HCH), one of the most widely used and most frequently detected organochlorine pesticides see Willet et al. (1998)], Boehncke et al. (1996) determined the vapor... 

The partial pressures of Cu in the system Cu-Fe-Pt in the temperature range 1240 to 1360°C have been measured by the Knudsen effusion technique and the thermodynamic properties of this system at 1300°C have been derived [1989Par]. The activities of Fe in solid solutions at 1300°C were calculated by Gibbs-Duhem integration of the Cu activities. The experimental alloys were prepared from Cu (99.999 mass%), Fe (99.999 mass%) and Pt (99.99 mass%) by induction melting in an alumina cmcible under an Ar atmosphere. The alloy buttons were then homogenized in a H2 atmosphere for 5 to 30 days at 900 to 1300°C. 

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