Journal of The Electrochemical Society · 1961 · 33 citations · 0 references
Natural SciencesMaterials SciencePhysicsCondensed Matter PhysicsPhysical ChemistrySolid State PhysicsPhase DiagramsPhase EquilibriaPhase EquilibriumPhase RelationsPhase TransitionsThermodynamics Of Phase EquilibriaHigh-temperature Phase RelationsPhase Diagram InterpretationPhase Diagrams Of Ceramic SystemsPhase Transition TemperatureTemperature Effects On Phase BehaviorThermal Analysis Of Phase Transitions
Phase relationships in the tantalum‐boron system between Ta and have been studied. A phase diagram of the solid portion of the system has been determined and is shown. Two three‐phase equilibria exist within the system: , and . The chemical composition of the phase is . The composition of the phase is . The melting point of lies above 2800°C. The extreme slowness of reactions within the system has been investigated qualitatively, and the necessity for seeding at temperatures in the neighborhood of 2000°C has been noted. The results disagree markedly with data previously reported in the literature.