Podcast
Questions and Answers
What is the primary purpose of a phase diagram in physical chemistry and materials science?
What is the primary purpose of a phase diagram in physical chemistry and materials science?
- To show the microscopic structure of an alloy
- To display the conditions at which thermodynamically distinct phases occur and coexist at equilibrium (correct)
- To predict the chemical reactions between two components
- To illustrate the correlation between microstructure and mechanical properties
What is the term for the pure metals and/or compounds that make up an alloy?
What is the term for the pure metals and/or compounds that make up an alloy?
- Components (correct)
- Phases
- Solutes
- Microstructures
What is a binary alloy composed of?
What is a binary alloy composed of?
- Three or more components
- Two components (correct)
- Two or more phases
- A solute and a solvent
What is the relationship between microstructure and mechanical properties of an alloy?
What is the relationship between microstructure and mechanical properties of an alloy?
What is the name of the type of chart used to show the conditions at which thermodynamically distinct phases occur and coexist at equilibrium?
What is the name of the type of chart used to show the conditions at which thermodynamically distinct phases occur and coexist at equilibrium?
What is the primary focus of understanding phase diagrams in materials science?
What is the primary focus of understanding phase diagrams in materials science?
What is the main purpose of a phase diagram?
What is the main purpose of a phase diagram?
How many parameters affect the phase structure of a system?
How many parameters affect the phase structure of a system?
What is plotted against each other to construct phase diagrams?
What is plotted against each other to construct phase diagrams?
What does the intersection of the dashed horizontal line at 1 atm pressure with the solid-liquid phase boundary represent?
What does the intersection of the dashed horizontal line at 1 atm pressure with the solid-liquid phase boundary represent?
What type of system is being referred to in the phase diagram for water?
What type of system is being referred to in the phase diagram for water?
What is a ternary alloy composed of?
What is a ternary alloy composed of?
What is used to represent the components of an alloy?
What is used to represent the components of an alloy?
What is described by the weight fraction of each phase and the composition of each phase?
What is described by the weight fraction of each phase and the composition of each phase?
What is the formula to calculate the weight percentage of a component A?
What is the formula to calculate the weight percentage of a component A?
What is a phase in the context of alloys?
What is a phase in the context of alloys?
What is the formula to calculate the atom percentage of a component A?
What is the formula to calculate the atom percentage of a component A?
What is the maximum concentration of soluble atoms that can be dissolved in a solution?
What is the maximum concentration of soluble atoms that can be dissolved in a solution?
What happens to the solubility limit when the temperature increases?
What happens to the solubility limit when the temperature increases?
What is the solubility limit of sugar in a sugar-water syrup at 20°C?
What is the solubility limit of sugar in a sugar-water syrup at 20°C?
What happens when the concentration of sugar is greater than 65wt% in a sugar-water syrup at 20°C?
What happens when the concentration of sugar is greater than 65wt% in a sugar-water syrup at 20°C?
How does changing the composition of a solution affect the number of phases present?
How does changing the composition of a solution affect the number of phases present?
What is the solubility limit of sugar in a sugar-water syrup at 99°C?
What is the solubility limit of sugar in a sugar-water syrup at 99°C?
What is the temperature at which the liquid transforms to vapour phase upon heating?
What is the temperature at which the liquid transforms to vapour phase upon heating?
What occurs at point 2 in the phase diagram during heating?
What occurs at point 2 in the phase diagram during heating?
What is the term for the point at which all three phases are simultaneously in equilibrium with one another?
What is the term for the point at which all three phases are simultaneously in equilibrium with one another?
What happens to the solid ice when it crosses the curve labelled aO?
What happens to the solid ice when it crosses the curve labelled aO?
What occurs when a phase boundary is crossed during heating or cooling?
What occurs when a phase boundary is crossed during heating or cooling?
What is the relationship between the curves aO, bO, and cO in the phase diagram?
What is the relationship between the curves aO, bO, and cO in the phase diagram?
