2 results about "Optical emission spectrometry" patented technology

The present invention provides: a surface-treated titanium material which is used for adhesive bonding and with which it is possible to further improve bondability; and a bonded body which includes the surface-treated titanium material. Provided is a surface-treated titanium material in which a silane film is provided on at least a part of the surface of a titanium base material, wherein when element distribution is measured by glow discharge optical emission spectrometry with respect to a region R1 on the outermost surface and a region R2 at a depth of 10 nm from the region R1 in a region in which the silane film is provided, the atomic concentration of silicon in the region R1 is 3.0 atom% to 30.0 atom% inclusive. The decrease rate M of the silicon concentration is 50% or more as calculated by formula (1) on the basis of the atomic concentration A1 of silicon in the region R1 and the atomic concentration A2 of silicon in the region R2. (1): M = ((A1 – A2) / A1) × (100)