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Article
Open AccessBehavior of biocide-free foul control paints for ships’ hulls in the immediate proximity of ICCP anodes
Impressed current cathodic protection systems are used in combination with organic coatings to prevent corrosion of hulls. The reaction species which are formed in the proximity of the anodes, like chlorinated...
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Article
Wettability of SiC and graphite by Co–Ta alloys: evaluation of the reactivity supported by thermodynamic calculations
Within the context of the design of high-temperature brazing process for C and SiC-based composites, a basic study is presented here about the wetting and interfacial reactivity of Co–Ta alloys in contact with...
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Article
Angle of wetting of aluminum oxide with a high-carbon iron melt
The angle of wetting of aluminum oxide with a high-carbon iron melt is studied as a function of temperature and time. It is found that the angle is nearly 94° in the temperature range 1200–1400°C. A preliminar...
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Article
Critical Issues for Producing UHTC-Brazed Joints: Wetting and Reactivity
A brief survey is presented of the most important interaction phenomena occurring at the solid-liquid interfaces in metal-ceramic systems at high temperatures, with special attention to the most recent develop...
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Article
Thermophysical properties of some Ni-based superalloys in the liquid state relevant for solidification processing
The thermophysical properties, e.g., melting range, specific heat, solid fraction, density, and surface tension of four industrial Ni-based alloys, namely MC-2, CMSX-10, TMS-75, and LEK-94, have been determine...
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Article
Joining of ZrB2 Ceramics to Ti6Al4V by Ni-Based Interlayers
Pure ZrB2 and ZrB2-SiC composites were joined to Ti6Al4V at 1100 °C using B-Ni50 (at.%) as a filler alloy. The brazing medium and the processing parameters were chosen on the basis of specific wetting tests which...
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Article
Isothermal solid–liquid transitions in the (Ni,B)/ZrB2 system as revealed by sessile drop experiments
In the framework of joining processes of ultrahigh temperature ceramics (UHTCs), sessile drop experiments were performed in the Ni–B/ZrB2 system in the range 1110° ≤ T ≤ 1200 °C. They show that, at temperatures b...
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Article
Wetting Behavior of Ternary Au-Ge-X (X = Sb, Sn) Alloys on Cu and Ni
Au-Ge-based alloys are potential substitutes for Pb-rich solders currently used for high-temperature applications. In the present work, the wetting behavior of two Au-Ge-X (X = Sb, Sn) ternary alloys, i.e., Au...
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Article
Control of Interfacial Reactivity Between ZrB2 and Ni-Based Brazing Alloys
Transition metals diborides (Ti,Zr,Hf)B2 play a key role in applications where stability at extremely high temperatures and damage tolerance are required; however, much research has still to be done to optimize t...
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Article
Wetting and Soldering Behavior of Eutectic Au-Ge Alloy on Cu and Ni Substrates
Au-Ge-based alloys are interesting as novel high-temperature lead-free solders because of their low melting point, good thermal and electrical conductivity, and high corrosion resistance. In the present work, ...
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Article
SiC/SiC and SiC/Kovar joining by Ni–Si and Mo interlayers
A composite joining technique, using a Ni–56Si filler alloy and Mo as interlayers, was used to join SiC to SiC and to Kovar. The wetting of the Ni–Si alloy on SiC ceramic was studied in a vacuum at 1,350 °C by...
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Article
Ab initio simulations of the Ag(111)/Al2O3 interface at intermediate oxygen partial pressures
The relative stability of different realizations of the Ag(111)/Alumina interfaces with varying oxygen partial pressures is investigated by means of ab initio density functional theory (DFT) simulations. Previ...
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Article
Wetting and interactions of Ni- and Co-based superalloys with different ceramic materials
In this work, a systematic study of the wetting behavior of two Ni-based and one Co-based superalloys, used, in particular, for the fabrication of turbine blades, is presented with reference to different ceram...
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Article
Wetting and interfacial behavior of Ni–Si alloy on different substrates
Wetting of molten Ni–56 at.% Si alloy on different substrates (SiC ceramic, Ni- and Co-based superalloys, Kovar, and Mo) are performed under different experimental conditions by the sessile drop technique. Tem...