Roles of strain and carrier in silicon oxidation

Ogawa, Shuichi*; Yoshigoe, Akitaka; Tang, J.*; Sekihata, Yuki*; Takakuwa, Yuji*

Japanese Journal of Applied Physics, 59(SM), p.SM0801_1 - SM0801_42, 2020/07

https://doi.org/10.35848/1347-4065/ab82a9

In this paper, we review the study of the unified Si oxidation reaction model mediated by point defect generation, in which O dissociative adsorption occurs at dangling bonds of point defects (emitted Si atoms and vacancies) at the SiO/Si interface, and the point defect generation rate is given by a combination of oxidation-induced strain, thermal strain due to the difference in thermal expansion coefficient between Si and SiO, thermal excitation of Si emission rate, and heat of adsorption.

Development of decomposition/detoxicifying technology of dioxins in waste incineration flue gases using electron beams

Kojima, Takuji

Hoshasen To Sangyo, (95), p.64 - 68, 2002/09

http://ci.nii.ac.jp/naid/40005508828

JAERI has developed decomposition/detoxicization technology of diozins in waste incineration flue gas using electron beams and actual 200 flue gas at Takahama clean center. The obtained results are as follows:(1) Ratio of concentrations before and after irradiation were about 50%, 80% and higher than 90%(goal) for absorbed doses of 3, 10, and higher than 14kGy. (2)Applicability of the obtained data with the scale-up ratio of about 6 was demonstrated for actual 4,000 m/h flue gases. (3)Toxicity as endocline-desruptor was checked using ELISA method and higher than 50% of such a toxicity was reduced from initial one by irradiation.(4) Diphenylether(DPE) or chloro-DPE having benzen-rings and ether bonds, were used as model compounds to clarify electron-beam decomposition mechanism detecting decomposition products at 200C. Break of ether bonds and cleavage of benzen-rings can be occured mainly at the initial decoposition process of dioxins rather than dissociation of Cl base without destruction of dioxin structure.

None

Shibata, Toshio*; *; *; Tsuru, Toru*; Inoue, Hiroyuki*

JNC TJ8400 2000-013, 38 Pages, 2000/02

JNC-TJ8400-2000-013.pdf:3.25MB

None

None

PNC TJ1601 98-003, 57 Pages, 1998/03

PNC-TJ1601-98-003.pdf:1.76MB

None

Laser-induced photochemical reaction of maleic acid solutions in the presence of hydrogen peroxide

Shimizu, Yuichi; Sugimoto, Shunichi*; Kawanishi, Shunichi; Suzuki, Nobutake

Laser Chem., 17, p.97 - 108, 1997/00

no abstracts in English

Sodium leak and combustion experiment-II report; Evaluation result of damage of mild steel liner

Aoto, Kazumi; ; Hirakawa, Yasushi

PNC TN9410 97-055, 128 Pages, 1996/07

PNC-TN9410-97-055.pdf:27.5MB

Several material analyses on damage of the floor liner made of a mild steel which was in the test cell of the second sodium leak and combustion experiment (Test-2) performed in OEC/PNC on June 7 in 1996 were carried out to clarify the following issues. (1)Difference of the corrosion mechanism of Test-2 liner to that of the first sodium leak and combustion experiment(Test-1) liner. (2)The vital factor which can desides corrosion mechanism and damage location. The following analyses were accomplished. (a)Microstructure observation (b)EPMA for cross-section of vicinity of corroded area (c)X-ray diffraction(XRD) for the interface between corrosion product-liner(mild steel) The differences between the corrosion mechanism of Test-1 liner which is seemed to be the same that of "MONJU" liner and that of Test-2 liner is discussed based on the results of these material analyses. As the result, the Na-Fe double oxidization with mechanical/chemical removal of reaction product can be occurred on the Test-1 and "MONJU" liner. On the other hand, a hot-corrosion, taht is the molten salt type corrosion is subject to be thinning of the Test-2 liner. All failures of Test-2 liner surround at the halfway up a convex. Considering the above corrosion mechanism, that fact leads that significant damage is occurred at the molten salt level.

Reaction mechanism of the pyrolysis of polycarbosilane and polycarbosilazane as ceramic precursors

Narisawa, Masaki*; Shimoda, M.*; Okamura, K.*; Sugimoto, Masaki; Seguchi, Tadao

Bulletin of the Chemical Society of Japan, 68, p.1098 - 1104, 1995/00

https://doi.org/10.1246/bcsj.68.1098

no abstracts in English

Treatment of supernatant from sewage sludge by electron beam irradiation combined with ozone

Hosono, Masakazu; Arai, Hidehiko; Aizawa, Masaki*; Shimooka, Toshio*; Shimizu, Ken*; Sugiyama, Masahi*

Mizu Shori Gijutsu, 36(5), p.11 - 17, 1995/00

no abstracts in English

None

PNC TJ1609 94-001, 12 Pages, 1994/02

PNC-TJ1609-94-001.pdf:1.95MB

None

Electron spin resonance studies in process of ceramics formation from organosilicon polymers

Narisawa, Masaki*; *; Sugimoto, Masaki; Okamura, K.*; Seguchi, Tadao

Ceramics,Powders,Corrosion and Advanced Processing (Trans. of Materials Research Soc. Jpn., Vol. 14A), 0, p.827 - 830, 1994/00

no abstracts in English