The element symbol of palladium is Pd, which is a white rare metal, belonging to one of the platinum group elements, and can be said to be the nobility of platinum group metals. Palladium purity is very high, contact with anyone will not cause skin allergy, and bright color, low price, but the processing is a little difficult.
1. What is palladium
Palladium was discovered in 1803 by British chemist Wollaston when he was separating platinum. It is similar to platinum, has excellent characteristics, under normal conditions in the air will not oxidize and tarnish, is an unusually rare precious metal resources.
Palladium is similar to platinum in appearance, with a silver-white metallic luster and bright color. Palladium is malleable, has excellent physical and chemical properties, high temperature resistance, corrosion resistance, wear resistance, in purity, rarity and durability, can be replaced with platinum, whether it is made alone jewelry or embedded gems, can be called a very ideal material.
The international jewelry industry began to process palladium as a component of gold, silver and platinum alloys to increase its hardness and gradually form a fashion trend.
The international Palladium jewelry imprint is the word Pd or Palladium. The imprint of palladium is Pd990, Pd950, Pd900, where the number of Pd heels means the content of metal palladium in the jewelry.
Two, the advantages and disadvantages of palladium
Advantages:
1, high purity
Palladium does not cause skin irritation when it comes into contact with anyone. Palladium is chemically stable and insoluble in organic acids, hydrochloric acid or cold sulfuric acid, except in aqua regia and nitric acid. Palladium is not easily oxidized and tarnished under normal conditions.
2, bright color, low price
Palladium has the same natural pure white charming brilliance as platinum, and the color is bright. Its appearance is also very similar to platinum, but palladium is less expensive than platinum.
Cons:
1, the processing is difficult
Because palladium has some unique physical and chemical properties, it is a little difficult to process its jewelry. Palladium in smelting is easy to splash, gold loss is large. Especially in the early stage of manufacturing, the technology is not very perfect, there will be manufactured palladium gold jewelry easy to break, or after welding there will be gray and black marks and other problems, but now with the maturity of science and technology, these problems are slowly solved.