Surface Analysis of Real Metals by Temperature Programmed Photoelectron Emission Technique. Relationship between TPPE characteristics and Surface Pretreatment Methods

Autor:	Manabu Takeuchi, Tokirou Kamosawa, Masakazu Homma, Yoshihiro Momose
Rok vydání:	2002
Předmět:	Argon Materials science General Engineering Analytical chemistry chemistry.chemical_element Plasma Photoelectric effect Electronic states Metal chemistry.chemical_compound chemistry X-ray photoelectron spectroscopy visual_art visual_art.visual_art_medium Acetone Total count
Zdroj:	Journal of the Surface Finishing Society of Japan. 53:675-682
ISSN:	1884-3409 0915-1869
DOI:	10.4139/sfj.53.675
Popis:	The surface electronic states of 15 kinds of real metals have been investigated by temperature programmed photoelectron emission (TPPE) and XPS. The characteristics of the TPPE method are the amount of emitted photoelectrons (PE total count) and the photoelectric threshold value measured at different temperatures in the temperature-increase and subsequent temperature-decrease process. The metal surfaces were pretreated using ultrasonic cleaning in acetone (T1) and exposure to argon plasma (T2). The characteristics depended strongly on the metals and the pretreatments. The PE total count and threshold value for T1 and T2 were compared: for the PE total count the metals with the order T1>T2 were Pt, Cu, Ag, Au, Ta, Nb, and Co, those with almost the same level (T1≈T2) were Al, Pb, W, Ti, and Mo, and those with the order T1 T2 was Sn, those with almost the same level (T1≈T2) were Al, Pb, Au, Ni, Ta, W, Mo, Nb, Co, and Fe, those with the order T1
Databáze:	OpenAIRE
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