Get the phase diagram information you need at a price you can afford. Key Features: Peer reviewed by the Japanese Committee for Alloy Phase Diagrams. Updated through April 2000. Total number of diagrams = 2,332 (605 are new of greatly revised diagrams; among these 171 are not in Binary Alloy Phase Diagrams, 2nd Edition). Approximately 600 crystal structure tables of systems for which phase diagrams are unknown. You've been asking for a simple book containing just binary phase diagrams and crystal structure data. Desk Handbook: Phase Diagrams for Binary Alloys meets this need, and it presents the most current information. Updates the previous print compilation of binary phase diagrams by 10 years. Presents diagrams in consistent size. Shows the principal axis in atomic per cent, with a secondary axis in weight per cent. Includes an introductory article on phase diagrams and their use. Gives reference to the original literature source. This volume is the latest outgrowth of the phase diagram activity in which ASM International has been involved since 1978.

Desk handbook phase diagrams for binary alloys

During operation, nuclear fuel rods are immersed in the primary water, causing waterside corrosion and consequent hydrogen ingress. In this review, the mechanisms of corrosion and hydrogen pickup and the role of alloy selection in minimizing both phenomena are considered on the basis of two principal characteristics: the pretransition kinetics and the loss of oxide protectiveness at transition. In zirconium alloys, very small changes in composition or microstructure can cause significant corrosion differences so that corrosion performance is strongly alloy dependent. The alloys show different, but reproducible, subparabolic pretransition kinetics and transition thicknesses. A mechanism for oxide growth and breakup based on a detailed study of the oxide structure can explain these results. Through the use of the recently developed coupled current charge compensation model of corrosion kinetics and hydrogen pickup, the subparabolic kinetics and the hydrogen fraction can be rationalized: Hydrogen pickup incr...

Corrosion of Zirconium Alloys Used for Nuclear Fuel Cladding

Reactor physic and reprocessing scheme for innovative molten salt reactor system

Corrosion in the molten fluoride and chloride salts and materials development for nuclear applications

CuGaO2 is used here as photocathode in place of NiO for a p-type dye-sensitized solar cell with iodide/triiodide (I−/I3−) or tris(4,4′-bis-tert-butyl-2,2′-bipyridine)cobalt (Co2+/Co3+) as redox mediator, and PMI or PMI-NDI as sensitizer Both photovoltaic characteristics and flat band potentials suggest that CuGaO2 can be viewed as a promising substitute for NiO

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CuGaO2: a promising alternative for NiO in p-type dye solar cells

The growth of thick films of zirconium oxide in the micrometer range by high voltage anodisation in 0.1M (NH 4 ) 2 B 4 O 7 is investigated. The impedance spectra reveal a bi-layer structure above 50 V. Another transition is observed at around 440 V with the occurrence of electrical discharges: the anodic process gives the way to plasma electrolysis. The growth has been continued up to an arbitrarily fixed maximum potential of 600 V. Plasma electrolysis gives rise to macroporous, uneven and well-crystallised films of monoclinic zirconia with a 3.2 μm thickness at 580 V. The surface presents singular “volcano-like” structures centered on a pinhole and the whole surface is progressively fully covered by these structures when the voltage sweep goes on. This is accompanied by an acceleration of the growth rate.

Growth by plasma electrolysis of zirconium oxide films in the micrometer range

Molten salt/liquid metal extraction: Electrochemical determination of activity coefficients in liquid metals

Anodic zirconium oxide films were grown potentiodynamically at a constant sweep rate up to the breakdown potential on rod electrodes made of 99.8% metallic zirconium. Different media of different pH were tested, namely 0.5 M H2SO4 (pH 0.3), 0.1 M Na2SO4 (pH 9) and 0.1 M NaOH (pH 13). By electrochemical impedance spectroscopy and scanning electron microscopy the oxide film thickness was monitored during the voltage scan. The behaviour was found to be different in the presence and absence of sulphate anions. In the presence of SO4) , the films were dense but breakdown occurred at 300–340 nm. In NaOH, two relaxations appeared above 50 V and were ascribed to a bi-layered coating structure and the maximum layer thickness was 720 nm before breakdown.

Impedance spectroscopy study of anodic growth of thick zirconium oxide films in H2SO4, Na2SO4 and NaOH solutions

https://hal.archives-ouvertes.fr/hal-00877440/document

Use of electrochemical techniques to study the corrosion of metals in model fluoride melts

Resistance to corrosion of the structural materials is a key factor for nuclear applications that use molten fluorides. Low chromium, nickel-base alloys are regarded as the most suitable metallic materials. In a first approach, corrosion of some pure metallic constituents Ni, Mo, W and Fe, was studied by electrochemical techniques. Linear voltammetry was applied in LiF-NaF and LiF-AlF3, in the temperature range 900-1100°C. The relative stability of the metals in LiF-NaF is established. To determine the corrosion current density, three methods are presented, two based on the Tafel extrapolation method and the third one being the polarization resistance method. Results regarding corrosion rates are compared. Two corrosion behaviors are observed: on the one side, Ni, Mo and W and on the other side Fe. The difference might come either from different corrosion mechanisms or from a different number of exchanged electrons. The corrosion rate increases with temperature following the Arrhenius law. However, further experiments are needed in order to identify the key parameters that influence the corrosion in the different melts.

Jorgen Finne

Papers

Growth by plasma electrolysis of zirconium oxide films in the micrometer range

Molten salt/liquid metal extraction: Electrochemical determination of activity coefficients in liquid metals

Impedance spectroscopy study of anodic growth of thick zirconium oxide films in H2SO4, Na2SO4 and NaOH solutions

Use of electrochemical techniques to study the corrosion of metals in model fluoride melts

Electrochemical Study of the Corrosion of Metals in Molten Fluorides