Raman investigation of ion irradiated TiC and ZrC

Pellegrino, S.; Trocellier, P.; Thomé, L.; Miro, S.; Jm, Costantini; Jouanny, E.

doi:10.1016/j.nimb.2019.02.012

Cited by 22 publications

(6 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is seen that no amorphization is induced in ZrN 1Àx like for ZrC 1Àx and TiC 1Àx . [13] This is consistent with the absorption spectra (Figure 4b) showing no clear changes with irradiation. No significant shift or smearing of the broad absorption band is observed.…”

Section: Zirconium Nitridesupporting

confidence: 91%

“…For ZrC 1Àx and TiC 1Àx , [13] which are also metallic compounds with the same rock-salt crystal structure as ZrN, [70] Raman spectra are derived from the presence of native carbon vacancies. [71] In ZrN 1Àx , the TA and LA modes appear in Raman spectra due to the disorder arising from the nitrogen deficiency.…”

Section: Zirconium Nitridementioning

confidence: 99%

“…[71] Large TA-LA and LA-TO phonon gaps were actually found for ZrC 1Àx and TiC 1Àx with four well-defined TA, LA, TO, and LO broad bands. [13] The acoustic modes were associated to the vibrations of the heavier Zr atom sublattice, whereas the optical modes were associated to those of the N sublattice. [67,68] The growth of all bands is associated to vacancy formation in both sublattices.…”

Section: Zirconium Nitridementioning

confidence: 99%

“…[ 11 ] Similar studies were also dedicated to carbides, either amorphizable, such as SiC, [ 12 ] or non‐amorphizable, such as TiC and ZrC. [ 13 ] Different kinds of Raman spectra and behavior under irradiation were encountered in these ceramics depending on the chemical bonding and the respective radiation resistance. More specifically, for amorphizable solids such as SiC or YIG, the crystal lattice phonon peaks of the crystal gradually vanish, and new broad bands can appear owing to a new short‐range order (SRO) in the amorphous phase.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Raman spectroscopy study of damage in swift heavy ion‐irradiated ceramics

Costantini

Gutierrez

Lelong

et al. 2022

J Raman Spectroscopy

View full text Add to dashboard Cite

Raman scattering is applied to probe the radiation damage in swift heavy ionirradiated ceramics, namely zirconium nitride (ZrN), ceria (CeO 2 ), and yttriastabilized zirconia (ZrO 2 : Y, or YSZ) for about the same high electronic stopping power of heavy ions. Raman spectra show that these ceramics are radiationresistant materials that are not amorphized by such irradiations even for large ion track overlap at high fluences. However, for ZrN, the increase of the TA/LA and TO/LO band intensities versus fluence is evidenced after 100-MeV Xe ion irradiation up to a saturation for the fluence of 3 Â 10 12 cm À2 . The band growths are ascribed to the increase of the concentration of Zr and N vacancies induced by electronic excitations inside tracks. However, the diffuse reflectance spectra do not exhibit any clear modifications of the electronic structure. For ceria, the decrease and broadening of the main F 2g peak of the fluorite-like structure and the growth of a broad defect band assigned to oxygen vacancy formation is observed versus fluence up to 10 14 cm À2 for 200-MeV Xe ion irradiation. For YSZ, Raman spectra mainly give evidence of the intrinsic lattice disorder due to the native oxygen vacancies even up to high fluences of about 3 Â 10 13 cm À2 for 200-MeV I and 200-MeV Au ion irradiation. Results are discussed on the basis of the interplay between the native structural disorder and the radiation-induced disorder by electronic excitations in these three materials.

show abstract

Section: Zirconium Nitridesupporting

confidence: 91%

Section: Zirconium Nitridementioning

confidence: 99%

Section: Zirconium Nitridementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Raman spectroscopy study of damage in swift heavy ion‐irradiated ceramics

Costantini

Gutierrez

Lelong

et al. 2022

J Raman Spectroscopy

View full text Add to dashboard Cite

show abstract

“…Additionally, Gosset et al [15] found a high density of defects of a certain size, which evolved into a dislocation network when the dose was increased by using four MeV Au ions at room temperature. Single crystals ZrC were irradiated with 1.2 MeV Au ions for various doses in the range 2 × 10 14 –3 × 10 16 ions/cm 2 by Pellegrino et al [16] at room temperature, and dislocation loops for doses above 10 15 ions/cm 2 were observed. Agarwal et al [17] performed three MeV He + ion irradiations up to 5 × 10 20 ions/m 2 and high-temperature annealing (1000–1600 °C) and found that, underneath blister caps, the microstructure of ZrC evolved into ultra-fine nano-scale grains consisting of numerous nano-cracks at 1500 °C.…”

Section: Introductionmentioning

confidence: 99%

Microstructure Evolution in ZrCx with Different Stoichiometries Irradiated by Four MeV Au Ions

Wei

Wang

et al. 2019

Materials

View full text Add to dashboard Cite

ZrCx ceramics with different stoichiometries were irradiated under a four MeV Au ion beam in doses of 2 × 1016 ions/cm2 at room temperature, corresponding to ~130 dpa. Grazing incidence, X-ray diffraction and transmission electron microscopy were performed to study the radiation damage and microstructure evolution in ZrCx ceramics. With the decrease in C/Zr ratio, the expansion of ZrCx lattice became smaller after irradiation. Some long dislocation lines formed at the near-surface, while, in the area with the greatest damage (depth of ~400 nm), large amounts of dislocation loops formed in ZrC, ZrC0.9 and ZrC0.8. With the increase in carbon vacancy concentration, the size of the dislocation loops gradually decreased. Few dislocation loops were found in ZrC0.7 after irradiation, and only black-dot defects were found in the area with the greatest damage. For the non-stoichiometric ZrCx, with the increase of the intrinsic vacancies, the number of C interstitials caused by irradiation decreased, and the recombination barrier of C Frenkel pairs reduced. The above factors will reduce the total number of C interstitials after cascade cooling, suppressing the formation and growth of dislocation loops, which is significant for the enhancement of the tolerance of radiation damage.

show abstract

Performance of TiC coating prepared by in situ conversion of organic carbon film on 316L bipolar plate

Zhang

Wang

2023

J. Iron Steel Res. Int.

View full text Add to dashboard Cite

Raman investigation of ion irradiated TiC and ZrC

Cited by 22 publications

References 38 publications

Raman spectroscopy study of damage in swift heavy ion‐irradiated ceramics

Raman spectroscopy study of damage in swift heavy ion‐irradiated ceramics

Microstructure Evolution in ZrCx with Different Stoichiometries Irradiated by Four MeV Au Ions

Performance of TiC coating prepared by in situ conversion of organic carbon film on 316L bipolar plate

Contact Info

Product

Resources

About