Compared to classic testing applications, hardness testing in powder metallurgy needs completely different procedures and parameters. Samples must be prepared well to permit the hardness test and ...

ALTHOUGH the hardness of a substance is not a physical constant, and cannot be expressed as a function of known physical constants, the idea of hardness is a familiar one, and empirical determinations ...

There is a contender for the title of second-hardest material. Diamond is still number one, but boron suboxide, say US researchers, makes a strong pitch for second place. The current superhard silver ...