Abstract
The effect of low-energy high-current electron beams (LEHCEBs) at E = 15 keV on mechanical characteristics of near-surface layers of alumina-zirconium ceramics (AZC) of the 20Al2O3-80ZrO2(Y) composition (in mass %) is investigated by the method of dynamic indentation. It is shown that electron-beam treatment reduces Young's modulus and nanohardness of this ceramic material. The action of LEHCEBs on the structural-phase state of modified subsurface layers of AZC specimens is analyzed. Their elemental and phase compositions are examined using several techniques: electron-probe X-ray spectral microanalysis (EPMA), secondary-ion mass spectrometry (SIMS), and X-ray diffractometry. It is found out that irradiation of the ceramic material by LEHCEBs stimulates the transitions of an m-phase of zirconium dioxide into a tetragonal modification, and results in a considerable decrease in the alumina phase. Based on the analysis of the data obtained, a conclusion is drawn that it is the processes resulting from irradiation and giving rise to formation of a subsurface layer with a phase composition different from that of the bulk material, which are responsible for the effect of modification of the material mechanical property.
| Original language | English |
|---|---|
| Pages (from-to) | 1072-1076 |
| Number of pages | 5 |
| Journal | Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms |
| Volume | 267 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 15 Apr 2009 |
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Keywords
- Insulators
- Radiation effects on specific materials
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Instrumentation
Cite this
Structural-phase transformations in near-surface layers of alumina-zirconium ceramics induced by low-energy high-current electron beams. / Surzhikov, Anatoly Petrovich; Frangulyan, T. S.; Ghyngazov, S. A.; Koval, N. N.
In: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, Vol. 267, No. 7, 15.04.2009, p. 1072-1076.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Structural-phase transformations in near-surface layers of alumina-zirconium ceramics induced by low-energy high-current electron beams
AU - Surzhikov, Anatoly Petrovich
AU - Frangulyan, T. S.
AU - Ghyngazov, S. A.
AU - Koval, N. N.
PY - 2009/4/15
Y1 - 2009/4/15
N2 - The effect of low-energy high-current electron beams (LEHCEBs) at E = 15 keV on mechanical characteristics of near-surface layers of alumina-zirconium ceramics (AZC) of the 20Al2O3-80ZrO2(Y) composition (in mass %) is investigated by the method of dynamic indentation. It is shown that electron-beam treatment reduces Young's modulus and nanohardness of this ceramic material. The action of LEHCEBs on the structural-phase state of modified subsurface layers of AZC specimens is analyzed. Their elemental and phase compositions are examined using several techniques: electron-probe X-ray spectral microanalysis (EPMA), secondary-ion mass spectrometry (SIMS), and X-ray diffractometry. It is found out that irradiation of the ceramic material by LEHCEBs stimulates the transitions of an m-phase of zirconium dioxide into a tetragonal modification, and results in a considerable decrease in the alumina phase. Based on the analysis of the data obtained, a conclusion is drawn that it is the processes resulting from irradiation and giving rise to formation of a subsurface layer with a phase composition different from that of the bulk material, which are responsible for the effect of modification of the material mechanical property.
AB - The effect of low-energy high-current electron beams (LEHCEBs) at E = 15 keV on mechanical characteristics of near-surface layers of alumina-zirconium ceramics (AZC) of the 20Al2O3-80ZrO2(Y) composition (in mass %) is investigated by the method of dynamic indentation. It is shown that electron-beam treatment reduces Young's modulus and nanohardness of this ceramic material. The action of LEHCEBs on the structural-phase state of modified subsurface layers of AZC specimens is analyzed. Their elemental and phase compositions are examined using several techniques: electron-probe X-ray spectral microanalysis (EPMA), secondary-ion mass spectrometry (SIMS), and X-ray diffractometry. It is found out that irradiation of the ceramic material by LEHCEBs stimulates the transitions of an m-phase of zirconium dioxide into a tetragonal modification, and results in a considerable decrease in the alumina phase. Based on the analysis of the data obtained, a conclusion is drawn that it is the processes resulting from irradiation and giving rise to formation of a subsurface layer with a phase composition different from that of the bulk material, which are responsible for the effect of modification of the material mechanical property.
KW - Insulators
KW - Radiation effects on specific materials
UR - http://www.scopus.com/inward/record.url?scp=64349091522&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=64349091522&partnerID=8YFLogxK
U2 - 10.1016/j.nimb.2009.01.144
DO - 10.1016/j.nimb.2009.01.144
M3 - Article
AN - SCOPUS:64349091522
VL - 267
SP - 1072
EP - 1076
JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
SN - 0168-583X
IS - 7
ER -