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Journal Articles

Small-angle neutron scattering study on microstructure of poly($$N$$-isopropylacrylamide)-$$block$$-poly(ethylene glycol) in water

Motokawa, Ryuhei; Annaka, Masahiko*; Nakahira, Takayuki*; Koizumi, Satoshi

Colloids and Surfaces B; Biointerfaces, 38(3-4), p.213 - 219, 2004/11

no abstracts in English

Journal Articles

Effect of target compositions on the crystallinity of $$beta$$-FeSi$$_2$$ prepared by ion beam sputter deposition method

Yamaguchi, Kenji; Heya, Akira*; Shimura, Kenichiro; Katsumata, Toshinobu*; Yamamoto, Hiroyuki; Hojo, Kiichi

Thin Solid Films, 461(1), p.17 - 21, 2004/08

https://doi.org/10.1016/j.tsf.2004.02.052
 Times Cited Count：4 Percentile：25.1(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

Effect of substrate temperature and deposited thickness on the formation of iron silicide prepared by ion beam sputter deposition

Yamaguchi, Kenji; Haraguchi, Masaharu*; Katsumata, Toshinobu*; Shimura, Kenichiro; Yamamoto, Hiroyuki; Hojo, Kiichi

Thin Solid Films, 461(1), p.13 - 16, 2004/08

https://doi.org/10.1016/j.tsf.2004.02.051
 Times Cited Count：10 Percentile：46.79(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

Nanoscopic observation of structural and compositional changes for $$beta$$-FeSi$$_{2}$$ thin film formation processes

Yamamoto, Hiroyuki; Yamaguchi, Kenji; Hojo, Kiichi

Thin Solid Films, 461(1), p.99 - 105, 2004/08

https://doi.org/10.1016/j.tsf.2004.02.079
 Times Cited Count：10 Percentile：46.79(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

The Role of sputter etching and annealing processes on the formation of $$beta$$-FeSi$$_{2}$$ thin films

Shimura, Kenichiro; Katsumata, Toshinobu*; Yamaguchi, Kenji; Yamamoto, Hiroyuki; Hojo, Kiichi

Thin Solid Films, 461(1), p.22 - 27, 2004/08

https://doi.org/10.1016/j.tsf.2004.02.053
 Times Cited Count：8 Percentile：40.98(Materials Science, Multidisciplinary)

On the formation of $$beta$$-FeSi$$_{2}$$ using Ion Beam Sputter Deposition (IBSD) method, sputter etching (SE) followed by thermal annealing is effective substrate treatment to obtain highly (100) oriented $$beta$$-FeSi$$_{2}$$ on Si (100). However the best condition of these treatments are not yet known. In this work, the effect of sputter etching (SE) together with annealing process on the orientation of the film is investigated. In prior to the deposition of Fe, the substrate is irradiated by Ne$$^{+}$$ ion with various energy and fluence followed by thermal annealing at 1027 K for 60 minuets. The overall results show the most suitable SE condition using Ne$$^{+}$$ ion on IBSD method is the energy of 1keV with the fluence of 30$$times$$10$$^{19}$$ ions/m$$^{2}$$.

Journal Articles

Damage evaluation techniques for FBR and LWR structural materials based on magnetic and corrosion properties along grain boundaries

Hoshiya, Taiji*; Takaya, Shigeru*; Ueno, Fumiyoshi; Nemoto, Yoshiyuki; Nagae, Yuji*; Miwa, Yukio; Abe, Yasuhiro*; Omi, Masao; Tsukada, Takashi; Aoto, Kazumi*

Transactions of the Materials Research Society of Japan, 29(4), p.1687 - 1690, 2004/06

JAERI and JNC have begun the cooperative research of evaluation techniques of structural material degradation in FBR and LWR, which based on magnetic and corrosion properties along grain boundaries. Magnetic method has been proposed as the one of the non-destructive detection techniques on the early stage of creep-damage before crack initiation for aged structural materials of FBRs. The effects of applied stress on natural magnetization were investigated on paramagnetic stainless steels having creep-damages. On the other hand, corrosion properties and magneto-optical characteristics of ion-irradiated stainless steels in the vicinity of grain boundaries were estimated by AFM and Kerr effect microscope, respectively. These degradations were induced by changes in characteristics in the vicinity of grain boundaries. It is found that the initial level of progressing process of damage can detect changes in magnetic and corrosion properties along grain boundaries of aged and degraded nuclear plants structural materials.

Journal Articles

Damage Evaluation Techniques for FBR and LVVR Structural Materials Based on Magnetic and Corrosion Properties along Grain Boundaries

Hoshiya, Taiji; Takaya, Shigeru; Nagae, Yuji; Abe, Yasuhiro; Aoto, Kazumi; Ueno, Fumiyoshi*

IUMRS-ICAM2003 Abstracts, 29, 0 Pages, 2004/00

Japan Atomic Energy Research Institute and Japan Nuclear Cycle Development Institute have begun The cooperative research of novel evaluation techniques of structural material degradation in Fast Breeder Reactor (FBR) and Light Water Reactor (LWR), which based on magnetic and corrosion properties along grain boundaries Magnetic method has been proposed as the one of the innovative non-destructive detection techniques on the early stage of creep-damage before crack initiation for aged structural materials of FBRs. On the other hand, corrosion properties and magneto-optical characteristics of ion-irradiated stainless steel in the vicinity of grain boundaries were estimated by AFM. These degradations were induced by changes in characteristics in the vicinity of grain boundaries, such as chromium depletion. It is found that the initial level of progressing process of damage can detect changes in magnetic and corrosion properties along grain boundaries of aged and degraded nuclear

Journal Articles

Preparation of highly oriented TiO$$_{2}$$/ZnO films by pulsed laser deposition

Yamamoto, Shunya; Choi, Y.; Umebayashi, Tsutomu; Yoshikawa, Masahito

Transactions of the Materials Research Society of Japan, 29(6), p.2701 - 2704, 2004/00

no abstracts in English

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