Standard Metallography Technique Involving Acting Essay
Order ID 53563633773 Type Essay Writer Level Masters Style APA Sources/References 4 Perfect Number of Pages to Order 5-10 Pages
Standard Metallography Technique Involving Acting Essay
ENGR 1210 SEM Lab Report Name:
ENGR 1210 Lab Report 2: SEM Lab
- Objective: The objective of this lab session is to observe a metal sample with a Scanning Electron Microscope (SEM).
- Equipment used: (Technical specifications)
Equipment name Model/technical specs Function/property FIB microscope Acceleration voltage = 15kv
Working distance= 12mm
To observe sample surface SE detector ——————————– To form image EDS detector ——————————– Collect X-rays Copper tape ¼ wide To make sample conductive
- Sample preparation
- Sample was prepared using standard metallography technique involving acting, grinding, polishing, and etching.
- Copper tapes were applied to make sample conductive.
- Experimental/testing procedure
- Results, observations, and discussions
- Sections 1 through 4 are common for a group whereas section 5 and 6 are individually written by each student.
- Only documents submitted as doc docx or pdf will be graded
- Include your first and last name in document heading next to Name:
- Delete these formatting notes before submitting
Objective: Observe metal sample specimen with a SEM. Compare and contrast with observations under light microscope (Lab 1)
Tools provided: Hitachi VP-SEM S3400N
- A) Sample needs to be prepared following metallography techniques (Lab 1) for bulk scale samples and using Carbon tape for nanoscale samples.
- B) Make note of each sample material shown by the SEM Operator. Wear gloves at all times to avoid any contamination with the sample.
- C) When mounting sample test specimens to the stub, sterile gloves should be worn. The sample test specimen should be mounted to the stub using proper amounts of conductive paste or double sided tape.
Operating and testing:
- A) Perform all necessary start up checks.
- B) Locate the EVAC Panel and turn key to start.
- C) Log into computer with appropriate user name and password
- D) To load a prepared and mounted sample test specimen first make sure the accelerated voltage is off and the specimen chamber is not under vacuum. Both of these controls are located on the control panel. Wait 2 minutes for the chamber to return to atmospheric pressure. Locate handle on front side of specimen stage and pull to remove specimen base. Locate specimen holder receptacle on specimen stage. Slide specimen base into holder. Push handle to move stage into specimen chamber. Press EVAC button to bring the chamber under pressure.
- E) Wait two minutes and engage accelerating voltage. The control for the acceleration voltage is located on the control panel. The voltage settings (Kv) can be adjusted by the operator prior to engaging.
- F) Testing device parameters for the detector(s) will be set by the SEM Operator.
- G) After scan is completed by the testing device. An image will appear on the computer screen. The operator will adjust the settings for best image quality.
- H) Repeat all sample preparation steps and experiment steps D – G recording the images generated with test specimens, the testing device readings, and descriptions and pictures/sketches of each sample material tested.
Results and discussion:
I saw the SEM machine(X-Ray) it was huge and complicated for me. The instructor of that lab was very professional in how to use that machine. Dr. Bedakar and She explained the parts that are in the machine and what each component does. Also I saw some images of the grain structure of the surface we were discovering at that lab and how deep she went through the part.
The sample is placed on the stage within the specimen chamber. The chamber is sealed allowing the procedure to be conducted under pressure or vacuum. Detectors vary in form and function. The S-3400N is equipped with two detectors: Everhardt Thornley Secondary Electrons (SE) Detector and the High Sensitivity Semiconductor Back Scatter Electron (BSE) Detector. Fundamentally, detectors measure how an electron reacts after colliding the sample. The information observed by the detector is then transmitted to the GUI, most typically a computer with system specific software
SME was used to get clearer and to see more bright pictuers of the grain structure of the sample. It has a really good lenses which are very charged it also gives colors to the pictures. We were able to see the grain lines that we cant see them with out the SME.
QUALITY OF RESPONSE NO RESPONSE POOR / UNSATISFACTORY SATISFACTORY GOOD EXCELLENT Content (worth a maximum of 50% of the total points) Zero points: Student failed to submit the final paper. 20 points out of 50: The essay illustrates poor understanding of the relevant material by failing to address or incorrectly addressing the relevant content; failing to identify or inaccurately explaining/defining key concepts/ideas; ignoring or incorrectly explaining key points/claims and the reasoning behind them; and/or incorrectly or inappropriately using terminology; and elements of the response are lacking. 30 points out of 50: The essay illustrates a rudimentary understanding of the relevant material by mentioning but not full explaining the relevant content; identifying some of the key concepts/ideas though failing to fully or accurately explain many of them; using terminology, though sometimes inaccurately or inappropriately; and/or incorporating some key claims/points but failing to explain the reasoning behind them or doing so inaccurately. Elements of the required response may also be lacking. 40 points out of 50: The essay illustrates solid understanding of the relevant material by correctly addressing most of the relevant content; identifying and explaining most of the key concepts/ideas; using correct terminology; explaining the reasoning behind most of the key points/claims; and/or where necessary or useful, substantiating some points with accurate examples. The answer is complete. 50 points: The essay illustrates exemplary understanding of the relevant material by thoroughly and correctly addressing the relevant content; identifying and explaining all of the key concepts/ideas; using correct terminology explaining the reasoning behind key points/claims and substantiating, as necessary/useful, points with several accurate and illuminating examples. No aspects of the required answer are missing. Use of Sources (worth a maximum of 20% of the total points). Zero points: Student failed to include citations and/or references. Or the student failed to submit a final paper. 5 out 20 points: Sources are seldom cited to support statements and/or format of citations are not recognizable as APA 6th Edition format. There are major errors in the formation of the references and citations. And/or there is a major reliance on highly questionable. The Student fails to provide an adequate synthesis of research collected for the paper. 10 out 20 points: References to scholarly sources are occasionally given; many statements seem unsubstantiated. Frequent errors in APA 6th Edition format, leaving the reader confused about the source of the information. There are significant errors of the formation in the references and citations. And/or there is a significant use of highly questionable sources. 15 out 20 points: Credible Scholarly sources are used effectively support claims and are, for the most part, clear and fairly represented. APA 6th Edition is used with only a few minor errors. There are minor errors in reference and/or citations. And/or there is some use of questionable sources. 20 points: Credible scholarly sources are used to give compelling evidence to support claims and are clearly and fairly represented. APA 6th Edition format is used accurately and consistently. The student uses above the maximum required references in the development of the assignment. Grammar (worth maximum of 20% of total points) Zero points: Student failed to submit the final paper. 5 points out of 20: The paper does not communicate ideas/points clearly due to inappropriate use of terminology and vague language; thoughts and sentences are disjointed or incomprehensible; organization lacking; and/or numerous grammatical, spelling/punctuation errors 10 points out 20: The paper is often unclear and difficult to follow due to some inappropriate terminology and/or vague language; ideas may be fragmented, wandering and/or repetitive; poor organization; and/or some grammatical, spelling, punctuation errors 15 points out of 20: The paper is mostly clear as a result of appropriate use of terminology and minimal vagueness; no tangents and no repetition; fairly good organization; almost perfect grammar, spelling, punctuation, and word usage. 20 points: The paper is clear, concise, and a pleasure to read as a result of appropriate and precise use of terminology; total coherence of thoughts and presentation and logical organization; and the essay is error free. Structure of the Paper (worth 10% of total points) Zero points: Student failed to submit the final paper. 3 points out of 10: Student needs to develop better formatting skills. The paper omits significant structural elements required for and APA 6th edition paper. Formatting of the paper has major flaws. The paper does not conform to APA 6th edition requirements whatsoever. 5 points out of 10: Appearance of final paper demonstrates the student’s limited ability to format the paper. There are significant errors in formatting and/or the total omission of major components of an APA 6th edition paper. They can include the omission of the cover page, abstract, and page numbers. Additionally the page has major formatting issues with spacing or paragraph formation. Font size might not conform to size requirements. The student also significantly writes too large or too short of and paper 7 points out of 10: Research paper presents an above-average use of formatting skills. The paper has slight errors within the paper. This can include small errors or omissions with the cover page, abstract, page number, and headers. There could be also slight formatting issues with the document spacing or the font Additionally the paper might slightly exceed or undershoot the specific number of required written pages for the assignment. 10 points: Student provides a high-caliber, formatted paper. This includes an APA 6th edition cover page, abstract, page number, headers and is double spaced in 12’ Times Roman Font. Additionally, the paper conforms to the specific number of required written pages and neither goes over or under the specified length of the paper.
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