Characterization of surface carbon films on weathered Japaneseroof tiles by soft x-ray spectroscopy
The effects of weathering on carbon films deposited onJapanese smoked roof tileswere investigated by soft x-ray absorption andemission spectroscopy using synchrotron radiation. X-ray absorptionmeasurements revealed that weathering oxidizes the carbon films and thatpartial carboxy chemical bonding occurs. Incident angle-dependent x-rayabsorption spectra in the C K region confirmed that the degree of theorientation at the surface of the oxidized carbon films decreases withweathering. However, the take-off angle-dependent C K x-ray emissionspectra showed that the orientation of the layered carbon structure ismaintained in the bulk portion when weathered. Therefore, it is confirmedthat oxidation proceeds from the surface of the carbon films. Weatheringdegrades and oxidizes the surface carbon films, which causes the metallicsilver color to change to darker gray.
- Research Organization:
- COLLABORATION - Japan Atomic Energy ResearchInstitute
- DOE Contract Number:
- DE-AC02-05CH11231
- OSTI ID:
- 922711
- Report Number(s):
- LBNL-60895; R&D Project: 0; BnR: YN0100000; TRN: US0801168
- Journal Information:
- X-ray Spectrometry, Vol. 34; Related Information: Journal Publication Date: 07/29/2005
- Country of Publication:
- United States
- Language:
- English
Similar Records
Characterization of thin films by means of soft x-ray reflectivity measurements
Synchrotron x-ray photoemission study of soft x-ray processed ultrathin glycine-water ice films