EMS162L_Lab1

EMS162L_Lab1 - UNIVERSITY OF CALIFORNIA, DAVIS Department...

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UNIVERSITY OF CALIFORNIA, DAVIS Department of Chemical Engineering and Materials Science EMS 162L: Structure and Characterization of Materials Laboratory Winter 2008 LAB EXPERIMENT #1 – OPTICAL MICROSCOPY Purpose : The purpose of this laboratory is to introduce you to optical microscopy which uses visible light to create an image of the surface of the sample. Keep in mind the type of information that you can obtain with the optical microscope and compare that the following lab using the scanning electron microscope. Samples : A collection of samples will be available in the lab including: Two different memory chips 4340 steel 845 0 C furnace cooled 4140 rusty steel 70/30 brass - 800°C, annealed for 1 hour 70/30 brass - 750°C, annealed for 2 hour 70/30 brass - 650°C, annealed for 1 hour 70/30 brass - 650°C, annealed for 50 hour 70/30 brass - 650°C, annealed for 100 hour 70/30 brass - 500°C, annealed for 1 hour 70/30 brass – air cooled The samples have been cut, polished, and etched to reveal their microstructure. For the brass series, you can just pick three of them to examine under the microscope. The others have interesting microstructures which are optional. You may share images amongst your group mates. Logistics : User name: ems162l Password: UcDav15 Domain: CHMS-AD Procedure : Detailed description of the use of the Nikon optical microscopes will be given by the TA and is included in the file “ App-Labophot2A.pdf ” and “App-OpticalMicroscope.pdf” located on the course smartsite webpage. Examine these samples using the optical microscope and record images of their microstructure. When you are ready to capture your image, switch over to the digital camera. Use the “ analySIS software to analyze and save the images. (not Photoshop as indicated in the “ App-Labophot2A.pdf ” file.) Take images of a few randomly chosen locations on the sample. Depending on the sample, you may want to take some low magnification and high magnification images. Examine the samples using both bright field and dark illumination. Take images under both conditions and comment on the microstructure
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This note was uploaded on 05/14/2010 for the course EMS 162l taught by Professor Staff during the Spring '08 term at UC Davis.

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EMS162L_Lab1 - UNIVERSITY OF CALIFORNIA, DAVIS Department...

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