White gold instead of platinum ( Pt ) .
White gold is gold ( Au , read Aurum ) is in plating or mixed with Nickel ( Ni ) , silver ( Ag , read Argentum ) , Palladium ( Pd ) or Rhodium ( Rh ) . However, due to mixed or coated with metal - metal mixing lead white to white color is shiny ( brilliant ) .Meanwhile, platinum ( Pt ) is actually white metal tends to fade a bit gray , metal is very soft when bent by hand ( especially Pt purity reaches 90 % , which is written in the trading world Pt900 ) .
In the jewelry business is now starting to wear jewelery trends For Wedding Pt , however, must be careful , because it is difficult to distinguish visually indicate that Pt with other metals ( metal that is nearly adjacent to its visual appearance is Silver and Aluminum ( Al ) , which is physically well rather soft . better to buy jewelry from a jewelry store pt to pt compositional guarantees in jewelry ( eg Pt900 , Pt950 her etc. , if necessary, the jeweler can show certification of raw material purchase pt jewelry they sell is a certificate of quality goods ( eg : from smelting companies such as PT . Precious Metals ) , and other guarantees that convincing . , but the most valid is proved by the test lab , just a shame ... when tested in the lab , the jewelry was damaged / dissolved and can not be returned to forms initially because it was turned into a solution .
Price Watch or materials Lab of Pt is very expensive because :
1 . The existence of Pt in nature are few and difficult to find ( number : about 30,000 tons ) , its presence in Africa , Columbia , Alaska , Russia and tough to make him into a pure Pt is 1 ounce of pure Pt were obtained from 10 tons of seeds excavated materials containing platinum .2 . To become a jewelry , should be merged with the high temperature , minimum = melting point and to enhance your appearance , usually in plating with Rhodium ( Rh ) so shiny .
3 . It takes a special skill to make it as jewelry , because although soft , it turns Pt clay and hard carved .
In Chemicals & Laboratory , Pt is a metal that has a high specific gravity is 21.4 g/cm3 dg melting point of 1773 deg C nm and to prove to be tested in the lab with solvent aquaregia and concentrationnya values determined by means of AAS ( Atomic Absorption Spectrophotometer ) at 265.9 l nm ( read : 265.9 nanometers wave n ) . Pt generally more widely used as a catalyst in creating a product ( such as : make Aldehydes from Methanol , and so on ) , as catalyc converter within the scope of the automobile , as the analysis of metal cup ( container special preparation ) in the laboratory , as a patchwork of dental materials and so on .
Thank you for reading this article. Written and posted by Bambang Sunarno. sunarnobambang86@gmail.com
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name: Bambang Sunarno.
http://primadonablog.blogspot.com/2014/02/different-white-gold-with-platinum.html
DatePublished: February 21, 2014 at 15:20
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Tag ; Different white gold with Platinum, White gold and Platinum.
