Formation of Ordered Gas-Solid Structures VIA Solidification in Metal-Hydrogen Systems

1998 ◽  
Vol 521 ◽  
Author(s):  
V. I. Shapovalov
Keyword(s):  
Experimental Data ◽  
Technology Development ◽  
Nucleation And Growth ◽  
Manufacturing Technology ◽  
Solid Materials ◽  
Pore Nucleation ◽  
Hydrogen Systems

ABSTRACTThis work contains theoretical discussions concerning the large amount of previously published experimental data related to gas eutectic transformations in metal-hydrogen systems. Theories of pore nucleation and growth in these gas-solid materials will be presented and related to observed morphologies and structures. This work is intended to be helpful to theorists that work with metal-hydrogen systems, and experimentalists engaged in manufacturing technology development of these ordered gas-solid structures.

The fuzzy integrated TOPSIS economy ranking (FITER) model for manufacturing technology development in China

2021 ◽  
pp. 1-13
Author(s):  
Yang GAO ◽  
Xiang GAO
Keyword(s):  
Decision Making ◽  
Information Diffusion ◽  
Manufacturing Industry ◽  
Service Industry ◽  
Technology Development ◽  
Manufacturing Technology ◽  
Technological Advancement ◽  
Ranking Score ◽  
Expansion Level ◽  
High Level

With knowledge perspective of industrial technology, in this paper we propose fast ranking score decision making model based on Fuzzy integrated TOPSIS approach to determine economic growth rate of manufacturing industry in China. This research focuses on driving effects of China’s productive service industry on manufacturing technology innovation. The research results show that the manufacturer service industry takes a high level of information diffusion for the manufacturing industry. It transmits a large amount of diverse information through the unconstrained relationship with the manufacturing industry, thereby forming the economic network with proposed Fuzzy integrated TOPSIS economy ranking (FITER) model and improve the development level of the manufacturing industry. We evaluate the performance of proposed FITER model by comparing ranking score of different manufacturing industry with different existing decision making mode and demonstrate that proposed model represent best ranking score in comparison to existing approach. Result from data analysis motivates driving effect of production services on the technological innovation of manufacturing and sub-sectors. It is found that the innovation and technological advancement in the production industry of services takes drive the overall expansion level of the business industry, as well as make the manufacturing industry the strongest.

The Kinetics of Austenization Process of T91 Ferritic Heat-Resistant Steel

2011 ◽  
Vol 317-319 ◽  
pp. 42-47
Author(s):  
Li Fang Zhang ◽  
Yong Chang Liu
Keyword(s):  
Experimental Data ◽  
Phase Transformation ◽  
Kinetic Parameters ◽  
Nucleation And Growth ◽  
Transformation Model ◽  
Resistant Steel ◽  
Kinetic Characteristics ◽  
Heat Resistant Steel ◽  
Austenite Grain ◽  
Kinetics Of

By fitting the calculated transformed fraction according to developed phase-transformation model to the experimental data obtained by differential dilatometry, the kinetic characteristics of the austenitization process in T91 steels have been investigated. According to the kinetic parameters fitted, we recognize that the nucleation and growth of austenite grain are mainly controlled by the diffusion of carbon in ferritic and austenite respectively. In addition, by increasing the diffusion active energy of carbon in austenite, carbides hinder the motion of interface and thus refine austenite grain.

The electro-deposition of silver on stationary and rotating glassy carbon discs

1977 ◽  
Vol 55 (23) ◽  
pp. 4037-4044 ◽  
Author(s):  
Remigio Germano Barradas ◽  
Stephen Fletcher ◽  
Sandor Szabo
Keyword(s):  
Experimental Data ◽  
Mass Transport ◽  
Glassy Carbon ◽  
Quantitative Model ◽  
Nucleation And Growth ◽  
Experimental Conditions ◽  
Electro Deposition ◽  
Transport Effects ◽  
Mass Transport Effects

The deposition of silver onto glassy carbon is described. The solution consisted of 10−2 M AgClO4 in 1.0 M HClO4. Experiments reveal the difficulties in trying to separate nucleation and growth phenomena from mass transport effects. A simple semi-quantitative model is proposed to explain the experimental data. It is also shown that the deposition reaction is not completely reversible under certain experimental conditions.

scholarly journals Manufacturing Technology Development of Single Torus Inner Vessel for Sodium Cooled Fast Reactor

2014 ◽  
Vol 86 ◽  
pp. 367-374 ◽  
Author(s):  
Gagan Gupta ◽  
Rosy Sarkar ◽  
R. Sritharan ◽  
V. Rajan Babu ◽  
V. Balasubramaniyan ◽  
...  
Keyword(s):  
Fast Reactor ◽  
Technology Development ◽  
Manufacturing Technology ◽  
Inner Vessel

scholarly journals Effect of Dissolution and Dispersion Conditions of VC-713 on the Hydrate Inhibition

2019 ◽  
Vol 2019 ◽  
pp. 1-10 ◽  
Author(s):  
Ren Wang ◽  
Huicui Sun ◽  
Jinsheng Sun ◽  
Yuanzhi Qu ◽  
Jie Zhang ◽  
...  
Keyword(s):  
Experimental Data ◽  
Formation Rate ◽  
Hydrate Formation ◽  
Normal Pressure ◽  
Underlying Mechanism ◽  
Inhibitory Effect ◽  
Nucleation And Growth ◽  
Structure Characteristics ◽  
Mechanism Of Inhibition ◽  
Mesoscopic Structure

VC-713 is a kind of hydrate kinetics inhibitor, which is widely used because of its strong hydrate inhibition. In this paper, VC-713 was dissolved and dispersed into its solution to various degrees by stirring the solution at the speeds of 600 r·min−1 and 12000 r·min−1. Then, under the condition of normal pressure and temperature change (gradually decreasing from 278.15 K to 273.65 K), the hydrate inhibitory effect of dissolution and dispersion of VC-713 on THF hydrate formation was studied. The variation in the concentration of VC-713 was monitored during the experiments. In addition, the mesoscopic structure characteristics of aqueous solutions were observed, and experimental phenomena in the reactor were recorded along with real time. Then, the experimental data were comprehensively analyzed, and the underlying mechanism of inhibition was revealed. Results showed that VC-713 inhibits hydrate nucleation and growth by adsorbing and binding. When the addition amounts are the same, better dissolution and dispersion of VC-713 can inhibit the hydrate formation more effectively. This is due to more complex skeleton structures formed by the hydrated VC-713 molecule. When the amount of VC-713 is 0.5 wt.%, the induction time, the formation rate, and the degree of supercooling of hydrate formation were extended, mitigated, and increased by 10.30%, 21.43%, and 17.80%, respectively, and changed to values of 8.75%, 14.29%, and 22.50%, respectively, for 1.0 wt.% VC-713.

Advanced Manufacturing Technology Development: A Macroergonomics Perspective

1987 ◽  
Vol 31 (10) ◽  
pp. 1156-1160 ◽  
Author(s):  
Michelle M. Robertson ◽  
Ann Majchzark
Keyword(s):  
Assessment Tool ◽  
Technology Development ◽  
New Technology ◽  
Manufacturing Technology ◽  
Advanced Manufacturing Technology ◽  
Technological Innovations ◽  
Order Effects ◽  
Advanced Manufacturing ◽  
Systematic Assessment ◽  
Manufacturing Technologies

This paper examines and discusses the implications of a macroergonomic perspective for assimilating advanced manufacturing technological innovations into an organization's human infrastructure. A framework for integrating sociotechnical systems and advanced manufacturing technology design is presented which identifies first-and second-order effects of the new technology on the human infrastructure. The Human Infrastructure Impact Statement (HISS) operationalizes these concepts into a systematic assessment tool. This paper ends with a brief list of some of the pertinent macroergonomic decisions that a manager and a macroergonomist must consider in implementing and designing Advance Manufacturing Technologies.

A Simple and Fast Method for Calculating Properties Across a Condensation Shock

2018 ◽  
Vol 140 (10) ◽  
Author(s):  
V. Babu
Keyword(s):  
Experimental Data ◽  
Steam Turbine ◽  
Simple Procedure ◽  
Nucleation And Growth ◽  
Fast Method ◽  
Algebraic Equations ◽  
Gas Dynamic ◽  
Droplet Nucleation ◽  
Condensation Shock ◽  
Steam Turbine Blade

A simple procedure for calculating the pressure at the onset and termination of condensation shocks that occur in steam nozzles and steam turbine blade passages is presented. In addition, the location of the termination of the condensation shock with reference to the throat location is also predicted. The procedure is based entirely on thermodynamic and gas dynamic considerations, without using a model for droplet nucleation and growth and the nozzle profile. The only input required is the stagnation condition at the inlet to the nozzle. The procedure requires the solution of a system of algebraic equations which can be accomplished quite easily. Calculations have been carried out for several inlet stagnation conditions and the predictions are compared with the available experimental data. The agreement is seen to be reasonable considering the simplicity of the procedure.

Evolution of Oxygen Associated Defects in Cz Silicon during Thermal Annealing Treatments: Comparison between Experiment and Simulation

2011 ◽  
Vol 178-179 ◽  
pp. 188-191
Author(s):  
Julien Nicolai ◽  
Nelly Burle ◽  
Bernard Pichaud
Keyword(s):  
Experimental Data ◽  
Nucleation And Growth ◽  
Growth Stages ◽  
Interstitial Oxygen ◽  
High Temperature Annealing ◽  
Annealing Effects ◽  
Annealing Cycle ◽  
Oxygen Precipitates ◽  
Induced Defects ◽  
Evolution Of Oxygen

High temperature annealing effects on Oxygen-induced defects formation has been studied by IR-LST, FTIR and TEM techniques. The results show that most defects are amorphous oxygen precipitates and/or dislocations. Ham’s theory has been modified in order to take into account the variations of interstitial oxygen concentration during the formation of precipitates. Comparison between experimental data and simulation shows that the specificity of annealing cycle is to combine both nucleation and growth stages. The morphology and stoechiometry of SiOx precipitates are also studied.

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