Materials science


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This ppt provides some information about material science. This ppt was made up of from other good ppts.

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Materials science

  1. 1. Material Science<br />
  2. 2. What are Materials?<br />Our clothes are made of materials, our homes are made of materials - mostly manufactured. Glass windows, vinyl siding, metal silverware, ceramic dishes…<br />Most things are made from many different kinds of materials.<br />
  3. 3. Kinds of Materials<br />Metals are materials that are normally combinations of "metallic elements". Metals usually are good conductors of heat and electricity. Also, they are quite strong but malleable and tend to have a lustrous look when polished.<br />Ceramics are generally compounds between metallic and nonmetallic elements. Typically they are insulating and resistant to high temperatures and harsh environments.<br />
  4. 4. Plastics are generally organic compounds based upon carbon and hydrogen. They are very large molecular structures. Usually they are low density and are not stable at high temperatures.<br />Semiconductors have electrical properties intermediate between metallic conductors and ceramic insulators. Also, the electrical properties are strongly dependent upon small amounts of impurities.<br />
  5. 5. Compositesconsist of more than one material type. Fiberglass, a combination of glass and a polymer, is an example. Concrete and plywood are other familiar composites. Many new combinations include ceramic fibers in metal or polymer matrix. <br />
  6. 6. Branches<br />Nanotechnology<br />a relatively new area grown out of techniques used to manufacture semiconductor circuits. Machines can be produced on a microscopic level. Example - miniature robots to do surgery inside the body or miniature chemical laboratories and instruments that will continuously analyze blood and dispense medications inside the body.<br />
  7. 7. Materials Science and Engineering<br />An interdisciplinary study that combines metallurgy, physics, chemistry, and engineering to solve real-world problems with real-world materials in an acceptable societal and economical manner. <br />
  8. 8. The following elements and their interaction define Materials Science and Engineering:<br />Performance<br />Properties<br />Structure and composition<br />Synthesis and processing<br />
  9. 9. The engineering of fantastic new materials is not a given, but a natural outgrowth. It is here that science and engineering almost touch. <br />
  10. 10. Materials Testing<br />Materials testing is a much narrower field than materials science or engineering.<br />It is determining the strength of certain materials.<br />It is mostly used to determine safety. Ex. concrete samples are tested.<br />It is not used to design new materials to be used in new applications. <br />
  11. 11. History of Materials<br />Even our history has been defined by the materials we use…<br />The stone age<br />The copper age<br />The bronze age<br />The iron age<br />
  12. 12. Man has been studying materials since before leaving the cave.<br />Due to lack of communication, early man spent hundreds of millennia experimenting with stone tools.<br />The first metal tools appeared perhaps only six thousand years ago.<br />
  13. 13. History<br />The discovery of “Iceman” in the Alps in 1991 gave significant information on early Copper age. He was carrying a copper axe.<br />It is dated at about 5300 years, when the first pyramids were built.<br />
  14. 14. As our knowledge of materials grows, so does the sophistication of our tools.<br />The more sophisticated our tools, the more sophisticated our accomplishments.<br />