EXPERIMENT # 9 Instructor: M.Yaqub

Slides:

Advertisements

Similar presentations

Phase Diagrams Continued

Advertisements

Mechanical & Aerospace Engineering West Virginia University Phase Diagram (1)

CHAPTER 8 Phase Diagrams 8-1.

Thermal Equilibrium Diagrams

1 Thermochemical and topological studies of systems constituted by transition metals (Co, Ni) with Sn and Bi G.P. Vassilev a, K.I. Lilova b, J.C. Gachon.

Phase Equilibria: Solubility Limit Sucrose/Water Phase Diagram Pure Sugar Temperature (°C) Co=Composition (wt% sugar) L (liquid solution.

Solutions Heterogeneous mixture – mixture that is not uniform throughout Homogeneous mixture – mixture that is uniform throughout suspension - > 1000.

CENG151 Introduction to Materials Science and Selection

Chapter 9: Phase Diagrams

Phase Diagrams Phase: A homogeneous portion of a system that have uniform physical and chemical characteristics. Single phase Two phases For example at.

Introduction to Materials Science, Chapter 9, Phase Diagrams University of Virginia, Dept. of Materials Science and Engineering 1 Development of microstructure.

Lesson 18 - Changing Mixtures You will investigate how adding salt affects the melting and boiling points of water. You will also investigate the melting.

Identifying Unknown Substances

PHASE DIAGRAMS Phase B Phase A • When we combine two elements...

Chapter Outline: Phase Diagrams

CENG151 Introduction to Materials Science and Selection

Element Groups (Families)

How to calculate the total amount of  phase (both eutectic and primary)? Fraction of  phase determined by application of the lever rule across the entire.

Lecture 9 Phase Diagrams 8-1.

Chapter ISSUES TO ADDRESS... When we combine two elements... what equilibrium state do we get? In particular, if we specify... --a composition (e.g.,

ENGR-45_Lec-22_PhaseDia-2.ppt 1 Bruce Mayer, PE Engineering-45: Materials of Engineering Bruce Mayer, PE Licensed Electrical &

Element Groups (Families)

Thermal Equilibrium Diagrams Contain information about changes that take place in alloys.

1. Chapter 09: Phase Diagram 2 Introduction Phase Diagrams are road maps.

Introduction to Materials Science, Chapter 9, Phase Diagrams University of Virginia, Dept. of Materials Science and Engineering 1 Growth of Solid Equilibrium.

Ex: Phase Diagram: Water-Sugar System THE SOLUBILITY LIMIT.

Microstructure and Phase Transformations in Multicomponent Systems

Phase equilibrium Plan 1.Phase equilibrium. Gibb’s phase rule. 2.Diagram of the state for a one component system 2.Diagram of the state for a one component.

Chapter ISSUES TO ADDRESS... When we mix two elements... what equilibrium state do we get? In particular, if we specify... --a composition (e.g.,

CHEMISTRY 111/112 Solutions. Solution Formation Solutions are homogeneous mixtures that may be solid, liquid or gaseous The composition of the solvent.

CHE 333 Class 3 Phase Diagrams.. Why Phases? Few materials used in pure state – gold, copper, platinum etc for electrical properties or coatings. Most.

Thermochemistry ( ) Enthalpy (ΔH) is related to the heat exchange that occurs during a chemical or physical process under constant pressure – Processes.

1 1 Figure 10.1 Considerations for effective dispersion strengthening: (a) The precipitate phase should be hard and discontinuous. (c)2003 Brooks/Cole,

Matter, Properties, and Changes Matter Anything that has mass and takes up space. Anything made from atoms. – Molecules – Cells – People – Air – Water.

Thermodynamic data A tutorial course Session 6: Modelling Surface Tension Alan Dinsdale “Thermochemistry of Materials” SRC.

Phase Diagrams And Microstructure

Phase Diagrams melting / production process / alloying (strength, Tm...) heat treatment microstructure material properties system (e.g. Cu-Ni) components.

The Structure and Dynamics of Solids

Solution Chemistry. Solutions Homogeneous mixtures of substances composed of at least one solute and one solvent.

Phase Diagrams Binary Eutectoid Systems Iron-Iron-Carbide Phase Diagram Steels and Cast Iron 1.

Mixtures and Pure Substances. Pure Substance Pure Substance: a substance that contains only one type of material –Element- substance that contains only.

ME 330 Engineering Materials

Phase Equilibrium Engr 2110 – Chapter 9 Dr. R. R. Lindeke.

Chapter ISSUES TO ADDRESS... When we combine two elements... what equilibrium state do we get? In particular, if we specify... --a composition (e.g.,

Chemical compositions of equilibrated phases One phase areas: the determination of the chemical composition of a single phase is automatic: it has the.

Topic Name : Solid solution

Metallic Materials-Phase Diagrams

Material Science & Metallurgy Non Equilibrium Cooling

Chapter 5 Phase Equilibria

Introduction to Materials Science and Engineering

CHAPTER 9: Definitions A. Solid Solution

Fully Miscible Solution

Mixtures & Solubility – Part I

CHAPTER 9: PHASE DIAGRAMS

Substances Matter that has the same composition and properties throughout is called a substance. When different elements combine, other substances are.

CHE 333 Class 5 Phase Diagrams. Prov08.

2/16/2019 9:54 PM Chapter 9 Phase Diagrams Dr. Mohammad Abuhaiba, PE.

Single solid phase binary alloy -1

CHAPTER 8 Phase Diagrams 1.

CHAPTER 8 Phase Diagrams 1.

CHAPTER 8 Phase Diagrams 1.

Working with Phase Diagrams

Eutectic Type Phase Diagrams

IE-114 Materials Science and General Chemistry Lecture-10

Formation of a New Substance

CHAPTER 9: PHASE DIAGRAMS

Interpretation of Phase Diagrams

Three component systems

Physical Properties of Matter

Presentation transcript:

EXPERIMENT # 9 Instructor: M.Yaqub Pb – Sn PHASE DIAGRAM EXPERIMENT # 9 Instructor: M.Yaqub

SOLUTION Solid solution: Consists of atoms of at least two different types Solute  an element or compound present in a minor concentration Solvent  an element or compound in greater amount; host atoms. Solubility Limit: The maximum concentration of a solute atoms that may dissolve in the solvent to form a solid solution at some specific temperature.

PHASE Phase: defined as a homogeneous portion of a system that has uniform physical and chemical characteristics. Every pure material is considered to be a phase Also every solid, liquid, and gaseous solution e.g., syrup solution is one phase, and solid sugar is another

PHASE DIAGRAM Equilibrium Phase diagram: Represents the relationships between temperature and the compositions and the quantities of phases at equilibrium. Also known as phase, equilibrium or constitutional diagram A binary alloy is one that contains two components.

Pb – Sn PHASE DIAGRAM a - Solid solution of tin in lead (tin “Sn” is solute and lead “Pb” is solvent) Solubility limit is 18.3% at 183 oC b - Solid solution of lead in tin (lead “Pb” is solute and tin “Sn” is solvent) Solubility limit is 2.2% at 183 oC Eutectic point at 61.9% Sn at 183 oC

Pb – Sn PHASE DIAGRAM

DIFFERENTIAL SCANNING CALORIMETR Differential Scanning Calorimeter (DSC) is used to make a phase diagram. Read the hand out for detail procedure.

PLOT OF HEAT FLOW

LAB REPORT From the resultant DSC curves determine the following parameters: Initial melting temperature for each sample. Melting peak for each sample. Final melting point for each sample. Calculate the heat of fusion, which is the area under the curve between the solid and the dotted lines for each sample.

LAB REPORT (Continue) Plot the measured transition temperatures on the Pb-Sn phase diagram. Tabulate all values for all tested specimens in a table format. Estimate the mass fractions of each phase in the microstructure given below. Predict the equilibrium mass fractions of each phase using the phase diagram and the lever rule.