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Career Paths for Materials Science and Engineering Graduates

Career Paths for Materials Science and Engineering Graduates. Dr. Laura J. Turbini Chemistry Lab Manager and Principal Scientist Research in Motion. My Checkered Career. AB, Chemistry MS and PhD, Inorganic Chemistry High School Teacher Industry Researcher and Manager Technical Editor

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Career Paths for Materials Science and Engineering Graduates

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  1. Career Paths for Materials Science and Engineering Graduates Dr. Laura J. Turbini Chemistry Lab Manager and Principal Scientist Research in Motion

  2. My Checkered Career AB, Chemistry MS and PhD, Inorganic Chemistry High School Teacher Industry Researcher and Manager Technical Editor University Professor Research Centre Director Lab Manager Principal Scientist Materials Advantage University of Toronto

  3. Engineer Materials Advantage, University of Toronto

  4. MS/PhD Materials Advantage, University of Toronto

  5. Jobs Materials Advantage, University of Toronto

  6. Business Man/Woman Materials Advantage, University of Toronto

  7. Marketing and Sales Materials Advantage, University of Toronto

  8. Design Engineer Materials Advantage, University of Toronto

  9. Project Management Materials Advantage University of Toronto

  10. Industry Management Materials Advantage, University of Toronto

  11. Executive Materials Advantage, University of Toronto

  12. Professor Materials Advantage, University of Toronto

  13. Materials in Microelectronics Materials Advantage, University of Toronto

  14. Head on Pillow Materials Advantage University of Toronto

  15. Dendritic Growth • Copper dendrite growing from cathode. • Forms only when copper-complexing reagent present SMTA Toronto Workshop 2007

  16. Depletion of Anode:Open Circuit SMTA Toronto Workshop 2007

  17. Tin Dendrites Materials Advantage University of Toronto

  18. Important Electrical Parameters • Electric Field • E = V/d • Ohms Law • V = IR • Resistance • R =  (d/A) • Conductivity •  = 1/ OH- Br- H+ Pb+ Cu+2 Cl- Sn+4 SMTA Toronto Workshop 2007

  19. + Anode - Cathode A Closer Look at CAF • Conductive Anodic Filaments are copper-containing corrosion by-products that emanate from the anode of a circuit and “grow” subsurface toward the cathode, frequently along the fibre-epoxy interface. CAF TMS Annual Meeting

  20. _ + + _ + Trace-to-hole Hole-to-trace Hole-to-hole Trace-to-trace Conductor Configurations TMS Annual Meeting

  21. Catastrophic CAF Failure Cathode Anode TMS Annual Meeting

  22. Corrosion of Copper in Chloride Media Pourbaix Diagram of Cu-Cl-H2O system • Formation of CuCl • Cu + Cl- CuCl + 1e- • Generation of oxygen and hydrogen ions • 2H2O  O2 + 4H+ + 4e- • CAF Formation • 12 CuCl+ 3O2 + 6H2O  4Cu2(OH)3Cl+ 4Cu2+ + 8Cl- A. Caputo, L.J. Turbini, and D.D. Perovic, Journal of Electronic Materials, vol. 39, pp. 92-96, 2010

  23. SEM Analysis of PCB cross-section HDI Filled Epoxy Prepreg Copper Core Glass Fibres Prepreg HDI 23

  24. Epoxy and fillers characterization • Silica is used to reduce the coefficient of thermal expansion (CTE) • Aluminum and magnesium hydroxides are used as flame retardants

  25. Epoxy and fillers characterization P Si O

  26. Time to Delamination H150 Delamination between epoxy/glass fibers and epoxy/epoxy Mg

  27. Overlap curves with all materials Temperature to decomposition (Td) Derivative wt% change/˚C vs. T Materials with Al(OH)3 Materials without Al(OH)3 • The presence of Al(OH)3 causes an increase in the rate of weight loss as this compounds starts decomposing at 200˚C 27

  28. Questions? Materials Advantage, University of Toronto

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