Study on radiation application; 40 years history of Takasaki radiation chemistry research establishment "towards glorious future"

Sudo, Yukio

Hoshasen To Sangyo, (100), p.10 - 11, 2003/12

no abstracts in English

Residual stress measurement by neutron diffraction methode and computation of FEM

Inoue, Kazuko*; Nakamura, Hiroshi*; Horikawa, Takeshi*; Kawashima, Hisakazu*; Tsujikami, Tetsuya*; Minakawa, Nobuaki

Nihon Zairyo Gakkai Dai-50-Ki Gakujutsu Koenkai Koen Rombunshu, p.415 - 416, 2001/05

no abstracts in English

Research on development of high-purity iron-based alloys; Manufacture, analysis of small amount of element and property tests

; *; ; ; Aoto, Kazumi;

JNC TN9400 2000-059, 43 Pages, 2000/05

JNC-TN9400-2000-059.pdf:2.08MB

The purpose of this study is to understand the material properties of manufacturable high-purity iron and high-purity iron-based alloy in present technology and to get an applicable prospect for the structural and functional material of the frontier fast reactor. Then the about 10kg high-purity iron and iron-based alloy were melted using a cold-crucible induction melting furnace under the ultra-high vacuum. Subsequent to that, the compatibility between the melted material and the high-temperature sodium environment which is a special feature of the fast reactor and tensile property at room and elevated temperatures were investigated using the melted materials. Also, the creep test using the high-purity 50%Cr-Fe alloy at 550C in air in order to understand the high temperature creep property. ln addition, the material properties such as thermal expansion coefficient, specific heat and electrical resistance were measured and to evaluate the outlook for the structural material for the fast reactor. The following results were obtained based on the property test and evaluation. (1)lt was possible to melt the about 10kg high-purity ingot and high-purity 50%Cr-Fe alloy ingot using a cold-crucible induction melting furnace under the ultra-high vacuum. (2)The tensile tests of the high-purity 50%Cr-Fe alloy were performed at room and elevated temperatures in order to understand the deformation behavior. From the experimental results, it was clear that the high-purity 50%Cr-Fe alloy possesses high strength and good ductility at elevated temperatures. (3)The physical properties (the thermal expansion coefficient and specific heat etc.) were measured using the high-purity 50%Cr-Fe alloy. lt was clear that the thermal expansion coefficient of high-purity 50%Cr-Fe alloy was smaller than that of SUS304. (4)From the corrosion test in liquid sodium, the ordinary-purity iron showed the weight loss after corrosion test. However the high-purity iron showed ...

The High-functional materials synthesis by radiation cross-linking and graft polymerization

Sugo, Takanobu

Genshiryoku eye, 44(8), p.13 - 15, 1998/08

https://ci.nii.ac.jp/naid/40005191858

no abstracts in English

Formation and evaluation of functionally gradient material for thermal stress relaxation, 1

; Hirakawa, Yasushi; Kano, Shigeki; Yoshida, Eiichi

PNC TN9410 98-048, 56 Pages, 1998/03

PNC-TN9410-98-048.pdf:7.03MB

Planar specimens of functionally gradient material (FGM) for thermal stress relaxation in fast reactor environment were formed and evaluated. FGMs of AlO-SUS316L system and YO-SUS316L system were deposited on SUS316L substrates by low pressure plasma spraying. The deposited coatings with 6 layers in which the ratio of ceramics/SUS316FR changes from 0 to 100% by 20% were successfully formed. Cross-sectional observation of the coatings showed no cracks and the hardness in the coating increased continuously from the substrate to the surface. From the results of X-ray diffraction, there were no changes in the structure of SUS316L and YO between the powder and the coating. On the contrary, in the case of AlO, - AlO phase was detected in the coating formed from __$ powder. The specimens were exposed in liquid sodium at 823K or 923K for 3.6Ms(1000h). The coatings were damaged with many cracks in liquid sodium. It was revealed that the bonding strength between the sprayed particles were not sufficient. To improve the stability in liquid sodium, another specimens were formed with changing the chamber pressure during deposition. From the microstructural inspections of the specimens, the coating formed at higher chamber pressure showed less porosity.

A Proposal of structural plasma study

*

Purazuma, Kaku Yugo Gakkai-Shi, 72(9), 962 Pages, 1996/09

http://ci.nii.ac.jp/naid/110003826596

no abstracts in English

Radiation-induced polymerization of a phospholipid for developing artificial red blood cells

Hosoi, Fumio; Omichi, Hideki; Akama, Kazuhiko*; Awai, K.*; Tokuyama, S.*; Sato, T.*

Nuclear Instruments and Methods in Physics Research B, 105(1-4), p.318 - 321, 1995/11

https://doi.org/10.1016/0168-583X(95)00575-7

no abstracts in English

JAERI TIARA annual report 1994, Vol.4; April 1994 March 1995

JAERI-Review 95-019, 265 Pages, 1995/10

JAERI-Review-95-019.pdf:11.71MB

no abstracts in English

JAERI TIARA annual report 1993, Vol.3; April 1993 March 1994

JAERI-Review 94-005, 252 Pages, 1994/11

JAERI-Review-94-005.pdf:10.43MB

no abstracts in English

Report of phase I program (19891993) on nuclear material crossover research

Kano, Shigeki; Tachi, Yoshiaki; ; ; Yoshida, Eiichi; Hirakawa, Yasushi

PNC TN9410 94-113, 70 Pages, 1994/04

PNC-TN9410-94-113.pdf:3.67MB

(Purpose) This report describes the outline, research results obtained, interchange activities, etc. of the Phase I Program on the Nuclear Material Crossover Research, which has been conducted by related research institutes including PNC/OEC from 1989 through 1993 fiscal year, and shows the Phase II Program to be started from 1994 fiscal year. (Method) Crossover research programs, research results and interchange methods were decided through discussions at the crossover research comittee (chairman : Prof.M.Okamoto, TIT) in which PNC, JAERI, NRIM, NIRIM and NCLI were participated as main members. Forums, seminars, symposiums and workshops with domestic and foreign experts on materials research were set up as the opportunities for interchange. (Results) (1)As secretary institutes, PNC and JAERl planned eight times of forums, 3 times of seminars, twice of domestic symposiums, once of international symposium, five workshops with research institutes in France, Germany, Italy and the Netherland. The contacts with outside experts, collection of new information on advanced materials, receipt of test samples, achievement of collaborative research, etc. through these interchanges were much valuable for effective performance of PNC research. (2)The following results were obtained on PNC research. The prospects on creation of following advanced materials were obtained through these interchanges: (a)advanced ceramics having excellent corrosion resistance to sodium, (b)longer life neutron absorbing materials having higher resistance to cracking than BC, (c)high performance shielding materials having higher heat resistance than conventional materials. (3)Phase II Program to be started from 1994 fiscal year has been planned by main five institutes and authorized through the evaluation by two evaluation comittees organized separately by the crossover research comittee and PNC. (Conclusion) The prospects on creation of several advanced materials were obtained through ...