Reactions and spreading in the Cu--Ag system

Technical Report · Fri Dec 01 04:00:00 EST 1978

DOI:https://doi.org/10.2172/6410311· OSTI ID:6410311

Sharps, P R

Sessile drop experiments were conducted using several liquid and solid compositions selected from the Cu--Ag phase diagram. Reactions between the solid and the liquid lead to spreading; a number of chemical nonequilibrium conditions were established using the various compositions. The Cu liquidus drop on the Cu solidus at 900/sup 0/C was in equilibrium assuming that the drop did not melt so as to form two phases. The eutectic liquid on the copper solidus at 780/sup 0/C was also in equilibrium. The Cu liquidus on pure Cu at 900/sup 0/C and the eutectic liquid on pure copper at 780/sup 0/C were cases of the solid being unsaturated with a component of the liquid. The eutectic liquid on the Cu solidus at 900/sup 0/C was a case of the liquid being unsaturated with a component of the solid. In the case of eutectic liquid on pure Cu at 780/sup 0/C was the spreading attributed to a reaction, that being the diffusion of Ag into the substrate.

• Research Organization: California Univ., Berkeley (USA). Dept. of Materials Science and Mineral Engineering
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6410311
• Report Number(s): LBL-8600
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
ALLOYS
CHEMICAL REACTION KINETICS
COPPER ALLOYS
CRYSTAL STRUCTURE
DIAGRAMS
DIFFUSION
ELEMENTS
EQUIPMENT
EUTECTICS
FLUIDS
GRAIN BOUNDARIES
INTERFACES
KINETICS
LIQUIDS
METALS
MICROSTRUCTURE
PHASE DIAGRAMS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
REACTION KINETICS
SILVER
SILVER ALLOYS
SOLIDS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENTS