Palladium: element symbol Pd, which is one of the platinum group elements.
1803, the British chemist and physicist wollaston successfully separated palladium from crude platinum for the first time, so palladium began to have its own name palladium. This name comes from the newly discovered solar asteroid Pallas-Athena in 1802. It commemorates the planet of Athena, the goddess of wisdom and craft in ancient Greek mythology.
The density of palladium is 1 cm3, which is12.023g.. Under normal circumstances, palladium is not easy to oxidize and lose its luster. Oxides will be formed on the surface around 400℃, but when the temperature rises to 900℃, the luster will be restored. Palladium is cheaper than platinum, and is used by jewelry industry alone or as a component of gold, silver and platinum alloys. Ruthenium is sometimes added to increase its hardness. Common gold in the market, palladium's K gold and platinum-palladium alloy. Specifications are marked with Pd 1000, Pd950 and Pd900.
Palladium is one of the rare precious metals in the world. In 2008, the global total output of palladium was similar to that of platinum, accounting for less than 8% of the total output of gold. (Source: Platinum and Palladium Yearbook 2009) Palladium, platinum, gold and silver are all international precious metal spot and futures trading varieties, and their prices were once higher than platinum in history. Palladium is a non-renewable scarce resource, and its future value will be gradually reflected with the deepening of mining and the improvement of market demand.