Abstract
Beam technologies are considered promising for surface modification of ceramics. The processes related to modification of zirconia and alumina-zirconium ceramics properties under intense electron and ion beam action are investigated. The ceramics samples were sintered by the thermal method and processed by electron and ion beams in vacuum. The electron beams had the following parameters: E = 15 keV, current density per pulse, 18 A/cm2, pulse duration, 50 μs, and pulse repetition rate, 0.1 Hz. For ion irradiation, we used C+ ion beams with the following parameters: energy of accelerated ions, 200 keV; current pulse duration, 100 ns; and pulse current densities, 40 and 150 A/cm2. It is shown that radiation processing causes significant changes in the microstructure, phase composition and electrical conductivity of the near-surface layer. It is established that the mechanical properties of irradiated modified ceramic layers depend mainly on the source porosity of the samples before processing. In particular, radiation exposure of low porous ceramics decreases the hardness of the near-surface layers. On the contrary, radiation-exposed highly porous ceramics exhibits increased hardness, which is caused by a local increase in the density of the near-surface layers as a result of fusion.
| Original language | English |
|---|---|
| Pages (from-to) | 190-193 |
| Number of pages | 4 |
| Journal | Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms |
| Volume | 435 |
| DOIs | |
| Publication status | Published - 15 Nov 2018 |
Fingerprint
Keywords
- Alumina-zirconium ceramics
- Electron and ion beams
- Modification
- Zirconia ceramics
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Instrumentation
Cite this
Zirconia ceramics processing by intense electron and ion beams. / Ghyngazov, S. A.
In: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, Vol. 435, 15.11.2018, p. 190-193.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Zirconia ceramics processing by intense electron and ion beams
AU - Ghyngazov, S. A.
PY - 2018/11/15
Y1 - 2018/11/15
N2 - Beam technologies are considered promising for surface modification of ceramics. The processes related to modification of zirconia and alumina-zirconium ceramics properties under intense electron and ion beam action are investigated. The ceramics samples were sintered by the thermal method and processed by electron and ion beams in vacuum. The electron beams had the following parameters: E = 15 keV, current density per pulse, 18 A/cm2, pulse duration, 50 μs, and pulse repetition rate, 0.1 Hz. For ion irradiation, we used C+ ion beams with the following parameters: energy of accelerated ions, 200 keV; current pulse duration, 100 ns; and pulse current densities, 40 and 150 A/cm2. It is shown that radiation processing causes significant changes in the microstructure, phase composition and electrical conductivity of the near-surface layer. It is established that the mechanical properties of irradiated modified ceramic layers depend mainly on the source porosity of the samples before processing. In particular, radiation exposure of low porous ceramics decreases the hardness of the near-surface layers. On the contrary, radiation-exposed highly porous ceramics exhibits increased hardness, which is caused by a local increase in the density of the near-surface layers as a result of fusion.
AB - Beam technologies are considered promising for surface modification of ceramics. The processes related to modification of zirconia and alumina-zirconium ceramics properties under intense electron and ion beam action are investigated. The ceramics samples were sintered by the thermal method and processed by electron and ion beams in vacuum. The electron beams had the following parameters: E = 15 keV, current density per pulse, 18 A/cm2, pulse duration, 50 μs, and pulse repetition rate, 0.1 Hz. For ion irradiation, we used C+ ion beams with the following parameters: energy of accelerated ions, 200 keV; current pulse duration, 100 ns; and pulse current densities, 40 and 150 A/cm2. It is shown that radiation processing causes significant changes in the microstructure, phase composition and electrical conductivity of the near-surface layer. It is established that the mechanical properties of irradiated modified ceramic layers depend mainly on the source porosity of the samples before processing. In particular, radiation exposure of low porous ceramics decreases the hardness of the near-surface layers. On the contrary, radiation-exposed highly porous ceramics exhibits increased hardness, which is caused by a local increase in the density of the near-surface layers as a result of fusion.
KW - Alumina-zirconium ceramics
KW - Electron and ion beams
KW - Modification
KW - Zirconia ceramics
UR - http://www.scopus.com/inward/record.url?scp=85042046083&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85042046083&partnerID=8YFLogxK
U2 - 10.1016/j.nimb.2018.02.007
DO - 10.1016/j.nimb.2018.02.007
M3 - Article
AN - SCOPUS:85042046083
VL - 435
SP - 190
EP - 193
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
ER -