SYMPOSIA PAPER Published: 01 January 1996
STP16531S

Variable Energy Positron Measurements at Nitrogen Ion Bombarded Steel Surfaces

Source

Nitrogen ion bombardment of steel samples has been studied by utilizing the Delft variable energy positron beam facility. The energy of the beam was varied between 250 eV and 25 keV and a line-shape parameter S describing the annihilation radiation has been measured. By use of the VEPFIT fitting programme, up to five different layers, each having different densities, could be identified and characterized. The results show that carbon layers deposited during nitrogen implantation can be observed. A relation between the measured depth profiles of nitrogen, carbon and oxygen by Elastic Recoil Detection Analysis (ERDA) and the results of positron annihilation is given and discussed. The wear and friction properties of the steel surfaces before and after nitrogen implantation are presented.

Author Information

Brauer, G
Positron group of TU Dresden at Research Centre Rossendorf, Inc., Dresden, Germany
Kolitsch, A
Institute for Ion Beam Physics and Material Research, Research Centre Rossendorf, Inc., Dresden, Germany
Schut, H
Interfaculty Reactor Institute, JB Delft, The Netherlands
van Veen, A
Interfaculty Reactor Institute, JB Delft, The Netherlands
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Details
Developed by Committee: E10
Pages: 1134–1143
DOI: 10.1520/STP16531S
ISBN-EB: 978-0-8031-5328-8
ISBN-13: 978-0-8031-2016-7