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Palluat de Besset, R.; Schwarz, E.
International colloquium on hard-facing materials in nuclear power plants, Avignon, 25-26 September 19801980
International colloquium on hard-facing materials in nuclear power plants, Avignon, 25-26 September 19801980
AbstractAbstract
[en] Surface enhancement to prevent wear, self welding, thermal shock stress and irradiation attack is obtained by applying spray coatings performed by the detonation gun process. The equipment and the process are described and density hardness, porosity, microstructure and bond strength of the coatings are examined
Primary Subject
Source
Societe Francaise d'Energie Nucleaire (SFEN), 75 - Paris (France); 235 p; 1980; p. 107-113; SFEN; Paris, France; International colloquium on hard-facing materials in nuclear power plants; Avignon, France; 25 - 26 Sep 1980
Record Type
Book
Literature Type
Conference
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Jeong, Minho; Lee, Kunhak; Choi, Eunsuk; Kim, Ahsung; Lee, Seung-Beck, E-mail: sbl22@hanyang.ac.kr2012
AbstractAbstract
[en] We present results for the transfer characteristics of carbon nanotube thin-film transistors (CNT-TFTs) that utilize single-walled carbon nanotube thin-films prepared by direct spray-coating on the substrate. By varying the number of spray-coatings (Nsp) and the concentration of nanotubes in solution (CNT), it was possible to control the conductivity of the spray-coated nanotube thin-film from 129 to 0.1 kΩ/□. Also, by introducing stripes into the channel of the CNT-TFT, and thereby reducing the number of metallic percolation paths between source and drain, it was possible to enhance the on/off current ratio 1000-fold, from 10 to 104, demonstrating that it may be possible to utilize spray-coating as a method to fabricate CNT-TFTs for large area switching array applications. (paper)
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Secondary Subject
Source
Available from http://dx.doi.org/10.1088/0957-4484/23/50/505203; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Journal
Nanotechnology (Print); ISSN 0957-4484;
; v. 23(50); [5 p.]

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Liang, Z.; Andreani, M.
Progress in simulation tools and methods. 24th nuclear simulation symposium. Proceedings2012
Progress in simulation tools and methods. 24th nuclear simulation symposium. Proceedings2012
AbstractAbstract
[en] Within the framework of the ERCOSAM-SAMARA project, co-funded by the European Union and the Russian State Atomic Energy Corporation, planning and pre-test calculations are performed to examine sensitivity parameters that can affect the break-up (erosion) of a helium (substitute for hydrogen) layer by mitigation devices (i.e., cooler, spray, or Passive Autocatalytic Recombiner - PAR). This paper reports the GOTHIC analysis results for the spray tests to be performed in the PANDA facility. The effects of spray flow rate, temperature and injection height on depressurization, erosion of helium cloud and gas transport behavior are studied. This analysis is valuable because only a limited number of conditions will be examined in the planned experiments. The study provides a useful understanding of the interaction of spray with a stratified atmosphere. (author)
Primary Subject
Source
Canadian Nuclear Society, Toronto, Ontario (Canada); 95 Megabytes; ISBN 978-1-926773-11-7;
; 2012; [10 p.]; 24. nuclear simulation symposium; Ottawa, Ontario (Canada); 14-16 Oct 2012; Available from the Canadian Nuclear Society, Toronto, Ontario, Canada; 5 refs., 9 figs.

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Miscellaneous
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Conference
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Tyagi, Ankit; Pandey, SM; Walia, R S; Murtaza, Qasim; Mishra, R S, E-mail: waliaravinder@yahoo.com, E-mail: shaileshmanipandey@dce.ac.in, E-mail: qasimmurtaza@dce.ac.in2019
AbstractAbstract
[en] The aim of present work was principally focus upon development of Mo composite coating using HVOF thermal spray coating process and to enhance residual stresses using Taguchi approach. The process parameter used in Taguchi experiment are Temperature, load and frequency. ANOVA method was used to examine and analyze the process parameters significance of Mo composite coating. The HRXRD and FESEM attached EDS were used to confirm surface morphology and presence of Mo based composite coating on steel substrate. Experimental results also concluded that for percent (%) change in residual stress, temperature (64.19%) has maximum % contribution followed by frequency (21.82%) and load (6.31%). (paper)
Primary Subject
Source
Available from http://dx.doi.org/10.1088/2053-1591/ab6252; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Journal
Materials Research Express (Online); ISSN 2053-1591;
; v. 6(12); [9 p.]

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AbstractAbstract
[en] Splashing of splat particles is one of the most important phenomena in industrial processes such as thermal spray coating. The data relative to the degree of splashing of splats sprayed with a normal angle are commonly characterized by the Weibull distribution function. In this present study, an effort has been made to show that the Burr distribution is better than the Weibull distribution for presenting the distribution of the degree of splashing. For this purpose, the Burr Type XII distribution and Weibull distribution are compared using different criteria. Furthermore, because of the great importance of statistical prediction of censored data in reducing costs and improving quality of the coating process, we consider different predictors of this data based on a progressively censored sample. For computing the prediction values we obtain the maximum likelihood estimates using the Expectation-Maximization (EM) algorithm. An important implication of the present study is that the Burr Type XII distribution more appropriately described the degree of splashing data. Therefore, the Burr Type XII can be used as an alternative distribution that adequately describes the splashing data and thereby predicts the censored data.
Primary Subject
Source
Available from http://jpst.irost.ir/article_582_0647ca05d04ec191a43c4d2021645f62.pdf; This is an Open Access article distributed under the Creative Commons Attribution 4.0 License. (http://creativecommons.org/licenses/by/4.0/); Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Journal
Journal of Particle Science and Technology; ISSN 2423-4087;
; v. 3(1); p. 41-50

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Kobayashi, Yasuhiro.
Hitachi Ltd., Tokyo (Japan)1980
Hitachi Ltd., Tokyo (Japan)1980
AbstractAbstract
[en] Purpose: To attain a highly efficient spray cooling by injecting cooling water of a high unsaturation degree into the outer periphery of a reactor core to moderate the flow-restriction caused by the upgoing steam streams in the outer periphery. Constitution: Spray nozzles of spray headers are provided near the outer periphery of the reactor core, and water spray is conducted upon loss of coolant accidents from the spray headers to the entire reactor core and from the spray header with the nozzle to the fuel assembly in the outer periphery of the core. While the spray water from the spray nozzle loses its unsaturation degree in contaction and admixture with two-phase mixture consisting of steam and saturated water accumulated in the upper plenum by the flow-restriction phenomena, the spray water from the lead nozzle is difficult to mix with the two-phase mixture in the upper plenum and the extent of decrease in the unsaturation degree due to the heat exchange is low. Then, this is injected as cooling water with a high unsaturation degree into the fuel assemblies to enable highly efficient spray cooling. (Moriyama, K.)
Primary Subject
Source
19 Feb 1980; 3 p; JP PATENT DOCUMENT 55-23448/A/; Available from JAPATIC. Also available from INPADOC
Record Type
Patent
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Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Ishida, Masayoshi; Matsumoto, Tomoyuki.
Hitachi Ltd., Tokyo (Japan)1975
Hitachi Ltd., Tokyo (Japan)1975
AbstractAbstract
[en] Object: To improve the spray cooling function of an emergency core cooling system by providing holes in the channel wall of a fuel assembly used for the boiling water type reactor in the neighborhood of the lower end of the channel wall. Structure: The lower end of a channel wall enclosing the assembly of fuel rods in a fuel rod assembly used for a boiling water type reactor is provided with holes. At the time of emergency core cooling, spray water collected in the flow path of the fuel assembly through the afore-mentioned holes is effectively led into the interior of the fuel assembly. In this way, while cooling the fuel rods in a high temperature state, an increase in the lower plenum water level is accelerated and spray cooling is further reinforced. (Moriyama, K.)
Primary Subject
Source
7 Nov 1975; 9 p; JP PATENT DOCUMENT 1977-57490/A/; Available from JAPATIC, Tokyo; hard paper copy 40 Yen/page (mailing charge additional)
Record Type
Patent
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INIS VolumeINIS Volume
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Robertson, Andrew L.; White, Ken W., E-mail: Andrew.robertson99987@gmail.com2017
AbstractAbstract
[en] Thermal spray coatings, often composed of heterogeneous, multiphase microstructures, may, consequently, exhibit complex fracture behavior. For such coating structures, conventional mechanical evaluation methods fail to isolate the contribution of microstructural features to the overall fracture behavior. For this reason, this study employed focused ion beam machined (FIB) microcantilever beams and FIB sectioning methods to study the fracture mechanisms important at the scale of the heterogeneous Cr3C2-NiCr thermal spray coating. We found three fracture modes, namely, intergranular matrix fracture, matrix/carbide interfacial fracture, and carbide cleavage. By comparison, microindentation-induced cracks, the frequency of crack deflection around carbides is significantly more prevalent at this much larger crack dimension. This mechanistic variation provides some insight into the specific role and limitations of the microcantilever beam technique for fracture characterization of composite microstructures.
Primary Subject
Source
S0921-5093(17)30131-4; Available from http://dx.doi.org/10.1016/j.msea.2017.01.097; Copyright (c) 2017 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Journal
Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing; ISSN 0921-5093;
; CODEN MSAPE3; v. 688; p. 62-69

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AbstractAbstract
[en] The principal aim of this study was to evaluate the effect of combination of electromechanical treatment (EMT) and ultrasonic treatment on structure and microhardness of air plasma sprayed composite coatings from Ni–20Cr alloy and R6M5 high speed steel (HSS). The results of the microstructural studies showed fundamental changes of the treated by the EMT plasma sprayed coating with the formation of nanostructured crystalline phases. As a consequence of the coating thus formed, the number of pores in the coating structure reduced from 10.0±1.5% to 2.0±0.5%, the surface microhardness increased from 3100±500 MPa to 7900±400 MPa. Additional ultrasonic treatment on the selected mode decreased surface waviness, which was formed on the surface of the plasma sprayed composite coatings after the EMT. The obtained results revealed the high potential of the combined treatment for post-treatment of the plasma sprayed coatings. (paper)
Primary Subject
Source
3. International Youth Scientific Forum with International Participation on New Materials; Moscow (Russian Federation); 21-24 Nov 2017; Available from http://dx.doi.org/10.1088/1757-899X/347/1/012001; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Literature Type
Conference
Journal
IOP Conference Series. Materials Science and Engineering (Online); ISSN 1757-899X;
; v. 347(1); [6 p.]

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Nagasaka, Hideo.
Toshiba Corp., Kawasaki, Kanagawa (Japan)1981
Toshiba Corp., Kawasaki, Kanagawa (Japan)1981
AbstractAbstract
[en] Purpose: To enable a large quantity of cooling water to be injected simultaneously into fuel channels upon actuation of emergency core cooling device in BWR type reactors. Constitution: A line comprising a gas in-take port and a blower for feeding gas to the upper plenum in the pressure vessel of a nuclear reactor is provided for introducing gaseous nitrogen in the containment shell to the upper plenum of the pressure vessel. The line is actuated upon operation of the emergency core cooling device. Then, the spray water from the spray nozzle of the emergency core cooling device is uniformly sprayed to each of the channels with the spray diverging angle not being restricted. (Ikeda, J.)
Primary Subject
Source
26 Jun 1981; 3 p; JP PATENT DOCUMENT 56-77791/A/; Available from JAPATIC. Also available from INPADOC
Record Type
Patent
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