| 摘要 |
<p>A metal material is provided with a metal material base (2) and a reforming layer formed on the surface of the metal material base (2), wherein the reforming layer has an average of three or more protrusions (3) in a 10 mum2 range, the protrusions protruding from the surface of the metal material base (2) and having an average diameter of 1 mum or less when viewed from a direction that is perpendicular to the surface of the metal material base (2). Preferably, the reforming layer is provided with an average of one or more of the following protrusions in a 10 mum2 range, that is, a protrusion provided with a base part protruding from the surface of the metal material base (2), and a tip part formed on the end of the base part, and having a constricted structure, in which the outer diameter of the base part is smaller than the outer diameter of the tip part, and an average diameter of 1 mum or less when viewed from a direction that is perpendicular to the surface of the metal material base (2). As a consequence, it is possible to provide a metal material exhibiting new features such as hydrophilic property and light-emitting property.</p> |
