Chemiemission from the cesium-oxygen surface reaction

This paper reviews selected phenomena related to the boundary friction process. The central thrust is on triboemission, defined as emission of electrons, charged particles, photons, etc., under conditions of boundary friction and/or surface damage caused by fracture processes. Low‐energy electrons are one of the most important particle components in triboemission. Accordingly, the triboemission process is of particular significance for (i) the boundary friction process as such, and (ii) the tribochemistry of the boundary lubrication process. This review considers all the major issues of triboemission and related phenomena/processes. It is shown that, in the boundary lubrication regime with hydrocarbon lubricants, charge intensities decrease with an increase in lubricant molecular weight. The paper also includes some recent information concerning research on triboemission along with a newly developed apparatus.

show abstract

Effects of gas pressure and sample temperature during slow electron excitation on exoelectron emission

Kirihata

1979

Phys. Stat. Sol. (a)

View full text Add to dashboard Cite

K97Exoelectron emission (EE) is often influenced by the adsorption of gases on solid surfaces /1 to 4/. To investigate such a n effect, the thermally stimulated exoelectron emission (TSEE) from stainless steel (SUS 304) was measured in vacuum after the electron excitation with the energy of 30 eV and FWHM = 0.27 eV under different pressures of residual gas and sample temperatures, Fig. 1 shows a typical TSEE curve with three noticeable peaks a t 470, 520, and 700 K. The TSEE intensity a t these temperatures w a s proportional to the pressure during the electron excitation a t room temperature, a s shown in Fig. 2 . The extrapolation to ultrahigh vacuum leads to the fact that clean surfaces exhibit no EE. The electron trapping centers causing the EE, ed certainly in physisorption layers on the oxidized stainless steel surface. Except the special case such a s the EE associated with the chemisorption of a gas on called EE-centers, a r e forma clean metal surface /5/ and the EE from the clean surface-of an alkali halide with the very small or negative electron affinity /6/, this conclusion is recognized by many investigators /7 to 9/. 0 2 1 6 8 I Fig. 1. TSEE from stainless Steel after electron excitation Fig. 2. TSEE intensity a t 470 (o), 520 (o), and 700 K (A) as a function of the gas pressure during electron excitation 7 physica (a)

show abstract

Chemiemission from the cesium-oxygen surface reaction

Cited by 14 publications

References 8 publications

Work function change of fresh scratched silicon surface due to gas adsorption

Work function change of fresh scratched silicon surface due to gas adsorption

Triboemission as a basic part of the boundary friction regime: A review

Effects of gas pressure and sample temperature during slow electron excitation on exoelectron emission

Contact Info

Product

Resources

About