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

Pb sn eutectic phase diagram

21/10/2021 Client: muhammad11 Deadline: 2 Day

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

Table 1. (continued) Temperature (° C) versus time (minutes) for 90 wt% Sn-10 wt% Pb alloy

Time

Temperature

( °F)

Time

Temperature

( °F)

Time

Temperature

( °F)

9:30

12:40

15:50

9:40

12:50

16:00

9:50

13:00

16:10

10:00

13:10

16:20

10:10

13:20

16:30

10:20

13:30

16:40

10:30

13:40

16:50

10:40

13:50

17:00

10:50

14:00

17:10

11:00

14:10

17:20

11:10

14:20

17:30

11:20

14:30

17:40

11:30

14:40

17:50

11:40

14:50

18:00

11:50

15:00

18:10

12:00

15:10

18:20

12:10

15:20

18:30

12:20

15:30

18:40

12:30

15:40

18:50

Table 1. (continued) Temperature (° C) versus time (minutes) for 90 wt% Sn-10 wt% Pb alloy

Time (minutes)

Temperature ( °F)

19:00

19:10

19:20

19:30

19:40

19:50

20:00

image3.emf

Cooling Curve

Temperature (in °C) versus Time (in minutes)

80

100

120

140

160

180

200

220

240

260

280

0:002:004:006:008:0010:0012:0014:0016:0018:0020:00

Time (minutes)

Temperature ( °C)

90 wt% Sn-10 wt% Pb

Fig. 3. Temperature (in °C) versus time (in minutes) for 90 wt% Sn-10 wt% Pb alloy.

Table 2. Compositions and corresponding liquidus temperatures (determined experimentally)

Composition (Sn-Pb)

Liquidus temperature (oC)

30-70

257

50-50

210

63-37

187

70-30

196

90-10

?

image4.emf

Lead-Tin Phase Diagram

0

20

40

60

80

100

120

140

160

180

200

220

240

260

280

300

320

340

360

0102030405060708090100

Composition (wt% Sn)

Temperature (°C)

Liquidus Temp. (oC)

Fig. 4. Incomplete binary phase diagram for the lead-tin alloy.

Fig. � SEQ Figure \* ARABIC �1�. Phase diagram lab set-up

Hot plate

Digital Display

Thermocouple

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:

Premium Solutions
Smart Accountants
Financial Assignments
Professor Smith
Quality Homework Helper
Ideas & Innovations
Writer Writer Name Offer Chat
Premium Solutions

ONLINE

Premium Solutions

I have worked on wide variety of research papers including; Analytical research paper, Argumentative research paper, Interpretative research, experimental research etc.

$17 Chat With Writer
Smart Accountants

ONLINE

Smart Accountants

I have worked on wide variety of research papers including; Analytical research paper, Argumentative research paper, Interpretative research, experimental research etc.

$45 Chat With Writer
Financial Assignments

ONLINE

Financial Assignments

I am a professional and experienced writer and I have written research reports, proposals, essays, thesis and dissertations on a variety of topics.

$37 Chat With Writer
Professor Smith

ONLINE

Professor Smith

I have done dissertations, thesis, reports related to these topics, and I cover all the CHAPTERS accordingly and provide proper updates on the project.

$25 Chat With Writer
Quality Homework Helper

ONLINE

Quality Homework Helper

I have worked on wide variety of research papers including; Analytical research paper, Argumentative research paper, Interpretative research, experimental research etc.

$16 Chat With Writer
Ideas & Innovations

ONLINE

Ideas & Innovations

I have read your project description carefully and you will get plagiarism free writing according to your requirements. Thank You

$32 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

Paragraph 353b of the immigration rules - Dream deferred by langston hughes analysis - Opj mini project 12e - Individual success plan - Australian taxation office townsville address - Ferrocene 18 electron rule - Report paper - Sample special power of attorney for authorized representative philippines - The compound beam is fixed at a - Budleigh salterton medical centre - Persuasive speech on donating to charity - Woolworths demerger tax implications - How much work must be done to stop - Phil 1 - ARTH 334 - Conduire conjugation present tense - Dartmouth regatta flying programme - Yamaha v star 1100 stator - Course Hero Account - George h gay jr - 6.22 miles in km - Computer Security Credentials - The more factor by laurence shames - Human Development - Dramatic irony in the yellow wallpaper - How to create a vlan in packet tracer - Who was john winthrop speaking to in this sermon - School finance a california perspective 9th edition - Unit 1 Assignment (HIS101) - Case study - Gummy worm mitosis worksheet answer key - The anthropocentric viewpoint implies that - Advantages and disadvantages matrix structure - Los mineros documentary - Mathematica - Nib health cover plans - Features of shifting cultivation - Harrison bergeron questions and answers - Discussion 7 - Cmpe 3 - Religion and Ethics - Design a bridge worksheet - What is the root element of an html document - Employee Retention Plan- PPT 5 Slides with 100 words in Note section of each slide - Models for writers short essays for composition 13th edition pdf - Business - Video Review Assignment 3 - Oliver twist very short summary - Nursing Disaster Planning - Buchan caves reserve campground - How is rebt different from cbt - Observation method in job analysis - Which of the following excerpts exhibits baroque rhythmic characteristics - What is the height of table quiz - Cell poems for science - Bendigo bank mirboo north - How might glassware be used differently - Texas educator code of ethics and standards - Describe the plain view doctrine, and why it has such a significant impact on digital forensics? What are three approaches to determining whether the doctrine applies to a specific case. - Nyit nursing transfer - Trevor noah stand up british colonization - Probability and statistical inference 9 pdf - Nonpf core competencies for fnp - Aqa history a level grade boundaries - Mcgraw hill connect unlimited attempts - Games on human resource management - What pos system does walmart use - Oxted health centre surrey - Medicine control council act - In triangle pqr c is the centroid - In praise of folly summary sparknotes - Tax Homework Study Problem - How giraffes got their long necks - Looking for a website expert - Sandvik fire suppression australia - Hlf polyurethane manufacturing - Tarra bulga national park camping - Discussion 7 - St vincent's southside birthing center - Contract law drafting exercise law 421 - Nebosh risk assessment report example - 10 pages - Gretchen at the spinning wheel lyrics - Emr normalized instance hours cost - Order # 9442 - Difference equation of z transform - Audit risk factors common to family owned businesses - Experiment 2: following chromosomal dna movement through mitosis - How did op art reflect 1960s culture - Nh4cl acid or base - EMERGING WEEK 2 DQ - Figurative language in harry potter and the sorcerer's stone - Virgin America: Flight Service for the Tech-Savvy - Writing an informative speech - Abs data integration project principles - Who is the famous entrepreneur - Cnn student news host - Comment - Mohammed mansour al rumaih trading - Two years are better than four