- Mar 3, 2001
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I bought new wedding bands for my wife and I off of ebay that are tungsten carbide. They were something like $25 each. Did some research on Wikipedia and saw this:
Naturally I was worried I had this colbat infested crap, so luckily in our reliability lab we have a SEM. Had the guy measure it for me, and it shows up as 86% W, 14% Ni
Woot!
Many manufacturers of this emerging jewelry state that the use of a cobalt binder may cause unwanted reactions between the cobalt and the natural oils on human skin. Skin oils cause the cobalt to leach from the material. This is said to cause possible irritation of the skin and permanent staining of the jewelry itself. Many manufacturers now advertise that their jewelry is "cobalt free". This is achieved by replacing the cobalt with nickel as a binder
Naturally I was worried I had this colbat infested crap, so luckily in our reliability lab we have a SEM. Had the guy measure it for me, and it shows up as 86% W, 14% Ni
Woot!