Sanitary equipment part and method of producing the same

A sanitary equipment part comprising:

• a base material having a metal element on a surface thereof;
• a layer of metal oxide formed on the base material;
• and
• a layer of organic compound provided on the layer of metal oxide, wherein
• the metal element is at least one selected from the group consisting of Cr, Zr, and Ti,
• the layer of metal oxide contains a metal element which is at least one selected from the group consisting of Cr, Zr, and Ti and an oxygen element,
• the layer of organic compound is present on a surface of the sanitary equipment part,
• when the surface of the sanitary equipment part is measured using X-ray photoelectron spectroscopy (XPS) with wide scan analysis according to condition 1, the metal element (M), a phosphorus atom (P), an oxygen atom (O), and a carbon atom (C) are detected, and a phosphorus atom concentration on the surface of the sanitary equipment part, which is calculated from a peak area of a P2p spectrum measured according to condition 1 by X-ray photoelectron spectroscopy (XPS), is 1.0 at % or more and 10 at % or less, and
• when the surface of the sanitary equipment part is measured according to condition A by time-of-flight secondary ion mass spectrometry (TOF-SIMS), a fragment represented by the general formula R—X (R is a hydrocarbon group or a group having an atom other than carbon at one or two positions in the hydrocarbon group and no halogen atoms, and X is at least one selected from a phosphonic acid group, a phosphoric acid group, and a phosphinic acid group).
• (Condition 1)
• X-ray condition:
• monochromatic AlKα ray (output 25 W)
• Photoelectron take-off angle:
• 45°
• Analysis area:
• 100 μmφ
• Scanning range:
• 15.5 to 1100 eV
• (Condition A)
• Primary ions to be emitted:
• 209Bi3++
• Primary ion acceleration voltage:
• 25 kV
• Pulse width:
• 10.5 or 7.8 ns
• Bunching:
• on
• Electrification neutralization:
• off
• Post acceleration:
• 9.5 kV
• Measurement range (area):
• about 500×500 μm2
• Secondary ions to be detected:
• Positive and Negative
• Cycle Time:
• 110 μs
• Scan count:
• 16