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Science of Engineering Materials

by: Nash Klein

Science of Engineering Materials CBE 30361

Marketplace > University of Notre Dame > Biomolecular Engineering > CBE 30361 > Science of Engineering Materials
Nash Klein
GPA 3.57

Alexander Mukasyan

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Alexander Mukasyan
Class Notes
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This 0 page Class Notes was uploaded by Nash Klein on Sunday November 1, 2015. The Class Notes belongs to CBE 30361 at University of Notre Dame taught by Alexander Mukasyan in Fall. Since its upload, it has received 31 views. For similar materials see /class/232706/cbe-30361-university-of-notre-dame in Biomolecular Engineering at University of Notre Dame.


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Date Created: 11/01/15
Laboratory of Advanced Electron Microscopy Nano Laboratory Helios 600 Field Emission Scanning Electron Microscope Magellan Manager Prof Alexander Mukasyan Transmission Electron Microscope Titan FEI I 01 JOE2009 MagellanHeliosTitan is a unique bundle currently the only one in the world of advanced Electron Microscopes with record high resolutions and top of the art capabilities Gold on Carbon Record Resolution lt06 nm Magni cation x1600000 Resolution 058 nm Magnification x1000000 Focused Ion Beam FIB c fEI COMPANY39 5mm Flblcs Incorporated FIB SE Image of FIB Deposmon and Machlnmg httpwwwfeiComproductsfamiliesv600familyaspx NanoChannels for SingleAtom Wires Dual 3m Nam Lab Harms ann GvuupuVPmY P BuhmDem Chem KEmmu Eng UnwevsWuYvaeDame Nano Composite High Energy Density Particle 1 le Nam Lab Halins emquot n daysst N39 5 mm cm GvuupuVPmYA Mukasan Dem Chem KEmmu Eng UnwevsWuVNutveDame Naan Compos to Part o o Transmission Electron Microscope Titan FEI MECHANICAL PROPERTIES 300000 L 39 ll Cobalt alloy Composites High S eng h steel Carbon epoxy 200000 b Alloy steel 39 Kevlarepoxy CU BC alloy 2 Nickel alloy 3950 0mm Titanium allo Ceramlcs polyimide y 73 SiC 00000 SiBN4 Cu Zn brass Aluminum alloy Zrin Zinc alloy PEEK A1203 polyester Nylon 39 39 Lead 0 Polyethylene Stress force per unit area Strain change of dimension divided by original dimension If the strain goes away after the stress is removed elastic strain If the strain remains plastic strain During elastic deformation stress and strain are linearly related with the slope known as Young s modulus A level of stress needed to initiate plastic deformation is called yield strength The maximum percent of deformation is a measure of the material ductility dimension If the strain goes away after the stress is removed elastic strain Macro Scale Structure Engine Block E upto 1 meter Performance Criteria Power generated M1 9Strucmm Ef ciency 39 Grams 39 Durability E 1 e 10 millimeters ICost Properties a ected Mlcrostl ucture High cycle fatigue Dendrites amp Phases Ductility 3 50 500 micrometers Nanostructure Properties affected Precipitates 39 weld Strength E 3100 nanometers Ultimate tensrle strength 39 Hi 1 39 Lo1gg Properties affected Thermal Growth 39 Yield Strength Atomicscale structure Dummy Pltimateltensile strength 5 1100 Angstroms V 7 7 77 Property a ected Stress force per unit area Strain change of d1mens10n d1V1ded by on ginal Y0ung s modulus Thermal Growth If the strain remains plastic strain During elastic deformation stress and strain are linearly related with the slope known as Young s modulus A level of stress needed to initiate plastic deformation is called yield strength The maximum percent of deformation is a measure of the material ductility ELECTRICAL Electrical Resistivity of Copper 6 O 4 O 3 39 o k a o 2 Q4 V 1 NegaC 0 200 100 0 T C Adding impurity atoms to Cu increases resistivity Deforming Cu increases resistivity THERMAL Space Shuttle Tiles Thermal Conductivity Silica fiber insulation of Copper offers low heat conduction 39113 decreases When you add Zinc 1 n m on am An quotnmnncifinn Iu 7rd MAGNETIC Magnetic Storage Magnetic Storage Recording medium A SEM picture showing the is magnetized by microstructure of a magnetic storage recording head disk Needlelike particles of yFeZO3 are oriented Within phenolic resin epoxy I 1 Signal y mama 39 I Write Read V OPTICAL Transmittance Aluminum oxide may be transparent translucent or opaque depending on the material structure polycrystal polycrystal single crystal low porosity high porosity Y t N 3 o 0 lt 66 e 2t 3 6 U 9 V b g 6 C p Q 6 0 A v6 39 C 39 39 db Q g v ox ob w 3 0k 0 2309 56 O z Q vac 3 0 SYNTHESIS amp PROCESSING Synthesis how materials are H made om chemicals IExam les a Reaction Sintering RS Chemical Vapor Deposition CVD Combustion Synthesis CS Casting Forging Drawn Vacuum Dcn rsition Processing Texturer tempemtm39e Properties 39Iiaracterizrltim Crystal structure Defects micrnstruct tire physical behavior and response to euviramnen 39le3 Processing how materials are shaped Microscopy Optic11 transmission c mung 231133 into useful components to cause changes xm ntulrsn c diffraction Uplical Spcctruscoi Itcmicul characteristics Examples metal casting cold work uc Hydraulic Shock Wave Extrusion Isostatic Hot Rolling Hot Pressing Casting Pressing Hot Pressing What is MSE Bonding l v licroslructure ICILclrical an Thermal lagnotl c Properties Pr turn in WHAT IS MATERIALS SCIENCE amp ENGINEERING MSE Materials En meieirin lt2 material transfermation to useful devmes Performance or Properties to Cost MSE Tetrahedron Ratio S nthesis and y Composmon Processmg 1 regime 39 Structure 0 I terr e email are Processing gt Structure gt Properties gt Performance HighTemperature Superconductors HTSC History and progress April 1986 The term hightemperature superconductor was rst used to designate the new family of cuprateerovskite ceramic materials discovered by Johansen George Bednorz and Karl Alexander Muller for which they won the Nobel Prize in Physics the following year Their discovery of the rst hightemperature superconductor LaBaCuO7 with a transition temperature of 35 K generated great excitement LSCO LaZXSIXCuOZ discovered the same year January 1987 YBCO was discovered to have a Tc of 90K by M K Wu et al BiSCCO discovered with Tc up to 107 K and TBCCO Tthallium discovered to have Tc of As of 2006 the highesttemperature superconductor at ambient pressure is mercury thallium barium calcium copper oxide Hgl2Tl3Ba30Ca30Cu450125 at 138 K is held by a cuprateperovskite material possibly 164 K under high pressure Recently other nonconventional superconductors not based on cuprate structure have been discovered Some have unusually high values of the critical temperature Tc and hence they are sometimes also called hightemperature superconductors After more than twenty years of intensive research the origin of hightemperature superconductivity is still not clear but it seems that instead of electronphonon attraction mechanisms as in conventional one is dealing with genuine electronic mechanisms e g by antiferromagnetic correlations and instead of swave pairing dwaves are substantial One goal of all this research is roomtemperature superconductors HTSC Hightemperature superconductors HTSCs operate in mysterious ways but scientists are starting to understand their peculiarities by using a stateofthe art spectroscopy system One of the biggest mysteries is how a material that starts as an insulatoriwhich does not conduct electricityican become a hightemperature superconductor a er being doped with electric carriers HTSCs have huge potential for industry because they conduct electrical current without heat loss yet need to be cooled only to liquid nitrogen temperatures 77 Kelvin rather than the liquid helium temperatures 4 Kelvin needed for conventional superconductors While still chilly that high temperature is much less expensive to reach HTSCs are used in niche applications as the materials are currently too brittle for widespread use Angleresolved photoemission spectroscopy ARPES I ffcrlion t i hig fret fstlp lld iml s a y In solid state physics two different paradigms are typically applied The first is a local picture in which one visualizes the quantum states of electrons in atomic orbitals or at impurity atoms in real space nspace The second is the momentum or reciprocal space Itspace picture where electrons are viewed as de Broglie waves completely delocalized throughout the material Understanding these two separate paradigms is essential for a complete understanding of the physics of condensed matter but rarely has it been as necessary to combine both pictures as it has been to gain insight into the electronic structure of the high temperature superconductors HTSCS In this article we review recent developments in the understanding of the relationship between the nspaoe and k space electronic spectroscopies used to explore high temperature superconductivity Kyle M Shequot and j c Seamus m mssp Depa mentafl hyxiu c Emailkrnxhen tnmelhedm1mawx crmnmme m mall Univemly Ithaca NY 14850 USA 11 edu snpermnduclivily mm p mm um nulve extramural Imuatlmns Between hrguy UNIEVIM y n39a m rnnl K 5 lmne H mm wwasnams i vmeM WWW me nanometer range mEZ ll lg mar me Loopebpall mvevunmons fig Anna 1 AmiM IheALfvancemenraf Sciena To date the premier tool for the direct study ofthe k space dependence ofelectronic properties isARPES which uses a high Intensity beam of ultraviolet or Xray photons to illuminate a sample An electron spectrometer then analyzesthe outgoing kinetic energies and directions of the photoelectrons allowing a determination of the initial quantum states ofthe electrons within the solid prone rypmauy ovorme millimeter scale wnim can pose an issue mr 2 up analyzer 4 Electron 539 1 a E N4 E NH E Photoemission geometry NonInteracting electron system Fermi liquid system MSE Tetrahedron Example Ceramic HighTemperature Superconductors HTSC Panamaan Coxr essmg e Oxlxogchmxrc ne puw der o f WEI l cle ued mummy he made an pur arid m Vim S 1m ma a rial7 Structure Properties Conclusion MSE an interdisciplinary eld concerned with inventing new and improving previously known materials by developing a deeper understanding of the microstructurecompositionsymhesis processing relationship between different materials Home work 1 Essay What do I expect from the course The Science amp Engineering of Materials 1 page due Friday September 4 2009


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