Archive for March, 2011

Dysprosium

Dysprosium
Dysprosium is a chemical element with the symbol Dy and atomic number 66. It is a rare earth element with a metallic silver luster. Dysprosium is never found in nature as a free element, though it is found in various minerals, such as xenotime. Naturally occurring dysprosium is composed of 7 isotopes, the most abundant of which is 164Dy.

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Metallography

This image titled “Wood Pile (SEM)” received Honorable Mention in Class 10 of the 2010 International Metallographic Contest. It was submitted by NT Saenz, JE Coleman, & Todd Schaef of PNNL.

Metallography is the study of a materials microstructure. Analysis of a material’s metallographic microstructure aids in determining if the material has been processed correctly and is therefore a critical step for determining product reliability and/or for determining why a material failed. The basic steps for proper metallographic specimen preparation include: documentation, sectioning, mounting, rough grinding, fine grinding, polishing, etching and examination.

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Titanium and It’s Alloys

 

Titanium Metal
Titanium was discovered in Cornwall, England, by William Gregor in 1791 and named by Martin Heinrich Klaproth for the Titans of Greek mythology. The element occurs within a number of mineral deposits, principally rutile and ilmenite, which are widely distributed in the Earth’s crust and lithosphere, and it is found in almost all living things, rocks, water bodies, and soils.The metal is extracted from its principal mineral ores via the Kroll process or the Hunter process.
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Biomaterials

Multiple roles for biomaterials in stem cell TE, source:http://www.nature.com/

A biomaterial is any material, natural or man-made, that comprises whole or part of a living structure or biomedical device which performs, auguments, or replaces a natural function. Biomaterials must be compatible with the body, and there are often issues of biocompatibility which must be resolved before a product can be placed on the market and used in a clinical setting.

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    • Engineering Properties of Steels July 6, 2011
      Metallic bonding is a consequence of the metal atoms giving up valence electrons to a 'free... This is a content summary only. Visit my website for full links, other content, and more! […]
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    • Welding Basic July 6, 2011
      Welding is a joining process in which joint production can be achieved with the use of high temperatures, high pressures or both. […]
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    • Weldability of Structural Steels July 4, 2011
      If weld preparation is good and operator induced defects (e.g. lack of penetration or fusion) are avoided, all the common structural steels can be successfully welded. […]
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