Loading...

Messages

Proposals

Stuck in your homework and missing deadline? Get urgent help in $10/Page with 24 hours deadline

Get Urgent Writing Help In Your Essays, Assignments, Homeworks, Dissertation, Thesis Or Coursework & Achieve A+ Grades.

Privacy Guaranteed - 100% Plagiarism Free Writing - Free Turnitin Report - Professional And Experienced Writers - 24/7 Online Support

Cooling curve lab report

27/03/2021 Client: saad24vbs Deadline: 2 Day

ME 241

MATERIALS LABORATORY

Fall 2008

Lab 5: Phase Diagrams

THE LAB:

· Construction of a phase diagram utilizing cooling curve data for a molten binary alloy.

THE SAMPLES:

Tin-lead alloys of the following weight percent compositions:image1.jpg

· 30%Sn-70%Pb

· 50%Sn-50%Pb

· 63%Sn-37%Pb

· 70%Sn-30%Pb

· 90%Sn-10%Pb

THE EQUIPMENT:

· Safety Glasses

· Stopwatch/timer

· Steel crucible

· Hot plate

· Thermocouple with calibrated digital display

THE PROCEDURE:

1. Wear safety glasses and ensure all lab participants are wearing safety glasses prior to beginning the Phase Diagram Experiment.

2. Assign members of your team to the following:

· Monitor the stopwatch and announce the ten-second intervals.

· Monitor the thermocouple and announce the temperature reading.

· Record the temperature reading with respect to the time.

3. Heat the sample to a temperature above 500 ° F at which the alloy reaches the molten liquid state, and then turn off the hot plate.

4. Once the temperature reaches 500oF, record the temperature of the sample at ten- second intervals, as the specimen cools.

5. Continue this process until the thermocouple temperature falls below 190 ° F when the alloy reaches the solidified state.

6. Plot the cooling curve data as temperature (oC) as a function of time (minutes) using Microsoft Excel.

THE REPORT:

Your Company is interested in the Pb-Sn alloy system as a possible solder material. Your Boss would like you to check the eutectic composition and temperature of the Sn-Pb system. Therefore, to accomplish this assignment you must conduct the following:

· Determine the cooling curve for the 90 Sn-10 Pb alloy.

The report (no more than five pages), should include (but not limited to) the following:

· A detailed drawing/photograph illustrating the experimental setup.

· A plot of your cooling curve experimental data (Temperature (in °C) as a function of time (in minutes) (E.g. Fig.3.), identify on the plot both the liquidus temperature and the eutectic temperature.

· Your actual experimental data should be included in an appendix.

· A plot of the complete phase diagram (Fig.4, also provided electronically).

· Your conclusion as to what is the eutectic composition and temperature of this system.

· Also comment on and discuss any difference between experimental and published data if any.

Your report should fully conform to the format and organization as given in the

REPORTS & TECHNICAL WRITING DOCUMENT provided on blackboard.

APPENDIX
BACKGROUND
The purpose of this experiment is to study and record phase transitions that occur because of thermal disturbances in binary compositions, and the graphical relationships between them. Phase diagrams define the specific quantities of the binary composition, and illustrate equilibrium states at any given temperature. This behavior can be modeled utilizing a series of temperature versus time plots called cooling curves.

image5.jpg

Fig. 1. Cooling curves for the copper-nickel alloy.

A series of cooling curves for the copper-nickel alloy is shown in Fig. 1. The cooling curves illustrate the change in temperature as a function of time for various copper-nickel weight percent. The linear parts of the cooling curve (although does not always have to be linear) identify the temperature (in °C) for the two-phase regions; i.e. the liquid phase and the solid phase. The upper and lower parts of the cooling curve define the temperature (in °C) for the single-phase region; i.e. the liquid phase or the solid phase. These temperature readings can be utilized in conjunction with the alloy’s corresponding composition to plot the copper-nickel phase diagram illustrated in fig. 2.

image2.jpg

Fig. 2. Phase diagram for the copper-nickel alloy.

(Fig.1 & 2: from: R. Higgins, Properties of Engineering Materials, Hodder & Stoughton, London, (1986), 149-150).

Table 1. Temperature (in ° C) versus time (in minutes) for 90 wt% sn-10 wt% pb alloy

Time

Temperature

( °F)

Time

Temperature

( °F)

Time

Temperature

( °F)

0:00

3:10

6:20

0:10

3:20

6:30

0:20

3:30

6:40

0:30

3:40

6:50

0:40

3:50

7:00

0:50

4:00

7:10

1:00

4:10

7:20

1:10

4:20

7:30

1:20

4:30

7:40

1:30

4:40

7:50

1:40

4:50

8:00

1:50

5:00

8:10

2:00

5:10

8:20

2:10

5:20

8:30

2:20

5:30

8:40

2:30

5:40

8:50

2:40

5:50

9:00

2:50

6:00

9:10

3:00

6:10

9:20

Homework is Completed By:

Writer Writer Name Amount Client Comments & Rating
Instant Homework Helper

ONLINE

Instant Homework Helper

$36

She helped me in last minute in a very reasonable price. She is a lifesaver, I got A+ grade in my homework, I will surely hire her again for my next assignments, Thumbs Up!

Order & Get This Solution Within 3 Hours in $25/Page

Custom Original Solution And Get A+ Grades

  • 100% Plagiarism Free
  • Proper APA/MLA/Harvard Referencing
  • Delivery in 3 Hours After Placing Order
  • Free Turnitin Report
  • Unlimited Revisions
  • Privacy Guaranteed

Order & Get This Solution Within 6 Hours in $20/Page

Custom Original Solution And Get A+ Grades

  • 100% Plagiarism Free
  • Proper APA/MLA/Harvard Referencing
  • Delivery in 6 Hours After Placing Order
  • Free Turnitin Report
  • Unlimited Revisions
  • Privacy Guaranteed

Order & Get This Solution Within 12 Hours in $15/Page

Custom Original Solution And Get A+ Grades

  • 100% Plagiarism Free
  • Proper APA/MLA/Harvard Referencing
  • Delivery in 12 Hours After Placing Order
  • Free Turnitin Report
  • Unlimited Revisions
  • Privacy Guaranteed

6 writers have sent their proposals to do this homework:

Top Grade Tutor
Assignment Hut
Instant Homework Helper
24/7 Assignment Help
Write My Coursework
Engineering Exam Guru
Writer Writer Name Offer Chat
Top Grade Tutor

ONLINE

Top Grade Tutor

I have read your project details. I can do this within your deadline.

$111 Chat With Writer
Assignment Hut

ONLINE

Assignment Hut

I am known as Unrivaled Quality, Written to Standard, providing Plagiarism-free woork, and Always on Time

$163 Chat With Writer
Instant Homework Helper

ONLINE

Instant Homework Helper

Give me a chance, i will do this with my best efforts

$71 Chat With Writer
24/7 Assignment Help

ONLINE

24/7 Assignment Help

Give me a chance, i will do this with my best efforts

$171 Chat With Writer
Write My Coursework

ONLINE

Write My Coursework

You can award me any time as I am ready to start your project curiously. Waiting for your positive response. Thank you!

$60 Chat With Writer
Engineering Exam Guru

ONLINE

Engineering Exam Guru

You can award me any time as I am ready to start your project curiously. Waiting for your positive response. Thank you!

$97 Chat With Writer

Let our expert academic writers to help you in achieving a+ grades in your homework, assignment, quiz or exam.

Similar Homework Questions

Texas governor informal powers - Cell organelles worksheet doc answer key - CLASS DISCUSSION: (CYBR 436) Internet & Network Security - Measure - When a compound donates loses electrons that compound becomes - Master of clinical exercise physiology - Global supply chain management v2 simulation answers - Master Nurse practitioner 1 page paper - Rhetorical analysis essay on a song - Worksheet on time zones - Classicmodels database download - 488 in roman numerals - Push pull workout pdf - Solar system simulation opengl source code - Steve biko academic hospital occupational therapy pretoria - Regency grand hotel case study analysis - Define slumpy - Class 2.1 flammable gases examples - Class 6 license manitoba - Kendall 9525 scd express - Discussion with referenes - How to measure field of view microscope - Starbucks functional strategy - Greek alphabet rap lyrics - Consolidated bearings regency park - IT-project management wk2 discussion - Coarse and fine adjustment knob - Cost of ag bagging - The cable to connect bns is usually twisted pair - Wk 2 Discussion 100820 - Inside job analysis paper - How to calculate ytm on financial calculator - Co2 electron dot diagram - The glass menagerie laura monologue - Border crossings catherine cucinella pdf - The military partnerships - Voices of wisdom 9th edition - English reflection - Criminal justice cover letter - Duffy's quality caring model - What name was edgar allan poe given at his baptism - Claude rich rollin with the flow - Energy profile diagram enthalpy - Hardball tactics in negotiation - Poppies remembrance day poem - Mad dogs englishmen and the errant anthropologist summary - Research Paper Outline Draft - Hertfordshire county council training courses - Centrelink crisis payment application form - Social work case presentation powerpoint - Unilever in brazil case study solution - Amps to watts 3 phase - Tax research - Issa personal training case study - Jewish bat mitzvah symbols - Anne hathaway carol ann duffy - Public Traded Company - Thermal cycling study guidance - Art appreciation chapter 4 quiz - I remember you was conflicted lyrics - Kelly coe net worth - Debate team line example - Black eyed peas lyrics where is the love - Grappenhall walled garden cafe - Managerial economics - Experiment 1 determining the chemical formula for copper gluconate - The rushmore group llc - Assignment needed urgently - Sodium carbonate flame color - In a naturalistic observation a researcher - Philosophical discussion of moral issues typically involves - 4 major organs of the respiratory system - Multiple choice questions on property plant and equipment - Ethc 101 liberty university quiz 1 - The manufacturer of the vinegar used in this experiment - Please complete the outline assignment. Use the Point/Counterpoint Outline Instructions for directions. - Silver company makes a product - Four quadrant cooking cauldron - Apollo sounder base wiring - JCCMI- Phil Week 4 Dis 1 - Fiona nagle jim mountjoy - Presidential Agendas - Evaluate Part of an Organizational Improvement Plan - Key and peele inner city school of wizardry - Catalyst 3750g integrated wireless lan controller switch - Why was the jamestown colony unstable and its survival questionable - Internal v. External recruitment - DQ 5 - MKT/435 WEEK 3 - Develop Your Own Personal Mission Statement - Week 5 socioautobiography audio powerpoint - The choice by edith wharton summary - SOC Ch1 - Calculate the fermi energy - Insider Threat - Durgadevi guhagar bhakta niwas - Electrical contractors licence vic - Plant assistant job description - Uni sa orientation week - 40 meter ocf dipole plans