Determination of interfacial tension at high temperatures. Surface tension of potassium and interfacial tension of Li/LiCl to 850$sup 0$C

Conference · Mon Jan 01 00:00:00 EST 1973

OSTI ID:4306112

Chung, J W; Bonilla, C F

A modified maximum bubble pressure apparatus suitable for high- temperature determination of interfacial tension in a closed vessel was devised. It employs two capillaries of different diameters running downwards from the bottom of an upper pool to the same depth in a lower pool. A conical plug that can close off the larger tube permits utiiization of either capillary at will. Simulteneous solution of Schroedinger's equation with the two maximum bubble pressure values yields the surface or interfacial tension convenientiy without requlring observation of the submergence. The surface tension of potassium was measured under argon from 75 to 845 deg C, showing internal consistency and substantial agreement with some of the earlier studies. The interfacial tension of the system Li/LiCl was then measured by the same method from its melting point of 618 to 845 deg C. The results agree roughly with Antonoff's rule. (5 figures) (auth)

• Research Organization: Columbia Univ., New York (USA). Liquid Metals Research Lab.
• NSA Number: NSA-29-024716
• OSTI ID: 4306112
• Report Number(s): COO-3027-7; CONF-730851-2
• Resource Relation: Conference: 6. symposium on thermophysical properties, Atlanta, Georgia, USA, 6 Aug 1973; Other Information: Orig. Receipt Date: 30-JUN-74
• Country of Publication: United States
• Language: English

Related Subjects

N50230* -Metals
Ceramics
& Other Materials-Metals & Alloys-Properties
Structure & Phase Studies
N40210 -Chemistry-Inorganic
Organic
& Physical Chemistry-Chemical & Physiochemical Properties
*LITHIUM CHLORIDES- SURFACE TENSION
*LITHIUM- SURFACE TENSION
*POTASSIUM- SURFACE TENSION
*SURFACE TENSION- MEASURING METHODS
HIGH TEMPERATURE
INTERFACES
TEMPERATURE DEPENDENCE
VERY HIGH TEMPERATURE