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2. Metallurgy in pre-Columbian America - Wikipedia

   en.wikipedia.org/wiki/Metallurgy_in_pre...

   Two workshops found and studied near the administrative sections of their towns, again showing the prestige of metal. Analysis of a Moche statue composed of numerous thin metal layers revealed complex plating and gilding involving a combination of immersion in acidic solutions and the application of extreme heat. [14]

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   Discover the latest breaking news in the U.S. and around the world — politics, weather, entertainment, lifestyle, finance, sports and much more.

4. Metallography - Wikipedia

   en.wikipedia.org/wiki/Metallography

   After mounting, the specimen is wet ground to reveal the surface of the metal. The specimen is successively ground with finer and finer abrasive media. Silicon carbide abrasive paper was the first method of grinding and is still used today. Many metallographers, however, prefer to use a diamond grit suspension which is dosed onto a reusable ...

5. Nondestructive testing - Wikipedia

   en.wikipedia.org/wiki/Nondestructive_testing

   In manufacturing, welds are commonly used to join two or more metal parts. Because these connections may encounter loads and fatigue during product lifetime, there is a chance that they may fail if not created to proper specification. For example, the base metal must reach a certain temperature during the welding process, must cool at a ...

6. Spark testing - Wikipedia

   en.wikipedia.org/wiki/Spark_testing

   Spark testing of tool steel Spark testing of mild steel. Spark testing is a method of determining the general classification of ferrous materials. It normally entails taking a piece of metal, usually scrap, and applying it to a grinding wheel in order to observe the sparks emitted. [1]

7. Elemental analysis - Wikipedia

   en.wikipedia.org/wiki/Elemental_analysis

   Elemental analysis is a process where a sample of some material (e.g., soil, waste or drinking water, bodily fluids, minerals, chemical compounds) is analyzed for its elemental and sometimes isotopic composition.

8. Electrochemical stripping analysis - Wikipedia

   en.wikipedia.org/wiki/Electrochemical_stripping...

   Electrochemical stripping analysis is a set of analytical chemistry methods based on voltammetry [1] or potentiometry [2] that are used for quantitative determination of ions in solution. [3] Stripping voltammetry (anodic, cathodic and adsorptive) have been employed for analysis of organic molecules as well as metal ions.

9. Metallurgical failure analysis - Wikipedia

   en.wikipedia.org/wiki/Metallurgical_failure_analysis

   Metallurgical failure analysis is the process to determine the mechanism that has caused a metal component to fail. It can identify the cause of failure, providing insight into the root cause and potential solutions to prevent similar failures in the future, as well as culpability, which is important in legal cases. [ 1 ]