Researchers find that a Gold-Titanium alloy is the hardest biocompatible metal

GOLD PLUS TITANIUM HARDEST KNOWN METALLIC SUBSTANCE (Orthopedics This Week)
A mixture of titanium and gold turns out to be the hardest known metallic substance that is compatible with living tissues, according to Helen Briggs, writing for the BBC News. This is potentially very good news for makers of hip and knee implants—which often must be replaced after a decade of use because of wear on the device. According to Briggs, Professor Emilia Morosan, Ph.D., of Rice University, Houston, Texas, and her team made the discovery while working on magnets made from titanium and gold.
Because the newly ...