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Thin layer activation technique applied to the measurement of wear

Journal Article:

Abstract

A thin layer of radioactive atoms is produced in the material by bombardment with charged particles, and as the material is worn away the total activity level is monitored. If the activity to depth relationship is then known the amount of material worn away can be determined. By a selective choice of the charged particle species and energy the depth of the active layer, its natural decay rate, and the energy of the emitted radiation can be pre-determined. The Harwell Tandem Electrostatic Generator has been found very suitable for the work. The total activity level can be made as little or as large as required, but a level around 5 to 10 microcuries is usually found to be adequate, and the active layer usually has a depth of 50 to 300 ..mu..m. The activated area can be from < 1 mm/sup 2/ to 4 cm/sup 2/. Particular reference is made to the production of /sup 56/Co in Fe. Experimental arrangements for the irradiation of components are described. Some practical applications undertaken by Harwell for industry are briefly mentioned, including wear of diesel engine valve seatings and fuel injection equipment, engine testing of lubricants, surface loss of rails and railway wheels,  More>>
Authors:
Humphries, P [1] 
  1. UKAEA Research Group, Harwell. Atomic Energy Research Establishment
Publication Date:
Jan 01, 1978
Product Type:
Journal Article
Reference Number:
AIX-09-376275; EDB-78-104039
Resource Relation:
Journal Name: J. Inst. Nucl. Eng.; (United Kingdom); Journal Volume: 19:1
Subject:
42 ENGINEERING; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; WEAR; ACTIVATION ANALYSIS; COBALT 56; DEPTH; IRON 56 TARGET; IRRADIATION PROCEDURES; LAYERS; PROTON REACTIONS; RADIOMETRIC GAGES; USES; BARYON REACTIONS; BETA DECAY RADIOISOTOPES; BETA-PLUS DECAY RADIOISOTOPES; CHARGED-PARTICLE REACTIONS; CHEMICAL ANALYSIS; COBALT ISOTOPES; DAYS LIVING RADIOISOTOPES; DIMENSIONS; ELECTRON CAPTURE RADIOISOTOPES; HADRON REACTIONS; INTERMEDIATE MASS NUCLEI; ISOTOPES; MEASURING INSTRUMENTS; NUCLEAR REACTIONS; NUCLEI; NUCLEON REACTIONS; ODD-ODD NUCLEI; RADIOISOTOPES; TARGETS; 420500* - Engineering- Materials Testing; 400101 - Activation, Nuclear Reaction, Radiometric & Radiochemical Procedures
OSTI ID:
7030080
Country of Origin:
United Kingdom
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: JINEB
Submitting Site:
INIS
Size:
Pages: 23-25
Announcement Date:

Journal Article:

Citation Formats

Humphries, P. Thin layer activation technique applied to the measurement of wear. United Kingdom: N. p., 1978. Web.
Humphries, P. Thin layer activation technique applied to the measurement of wear. United Kingdom.
Humphries, P. 1978. "Thin layer activation technique applied to the measurement of wear." United Kingdom.
@misc{etde_7030080,
title = {Thin layer activation technique applied to the measurement of wear}
author = {Humphries, P}
abstractNote = {A thin layer of radioactive atoms is produced in the material by bombardment with charged particles, and as the material is worn away the total activity level is monitored. If the activity to depth relationship is then known the amount of material worn away can be determined. By a selective choice of the charged particle species and energy the depth of the active layer, its natural decay rate, and the energy of the emitted radiation can be pre-determined. The Harwell Tandem Electrostatic Generator has been found very suitable for the work. The total activity level can be made as little or as large as required, but a level around 5 to 10 microcuries is usually found to be adequate, and the active layer usually has a depth of 50 to 300 ..mu..m. The activated area can be from < 1 mm/sup 2/ to 4 cm/sup 2/. Particular reference is made to the production of /sup 56/Co in Fe. Experimental arrangements for the irradiation of components are described. Some practical applications undertaken by Harwell for industry are briefly mentioned, including wear of diesel engine valve seatings and fuel injection equipment, engine testing of lubricants, surface loss of rails and railway wheels, wear of gears, wear of graphite bearing materials, and corrosion and erosion of materials. 4 references.}
journal = {J. Inst. Nucl. Eng.; (United Kingdom)}
volume = {19:1}
journal type = {AC}
place = {United Kingdom}
year = {1978}
month = {Jan}
}