31 Result(s)

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...

S. Gambaro, F. Valenza, M. L. Muolo, A. Passerone… in Journal of Materials Science (2017)

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...

A. N. Anikeev, F. Valenza, A. Passerone, I. V. Chumanov in Russian Metallurgy (Metally) (2017)

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...

A. Passerone, M. L. Muolo, F. Valenza in Journal of Materials Engineering and Performance (2016)

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...

S. Amore, F. Valenza, D. Giuranno, R. Novakovic… in Journal of Materials Science (2016)

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...

F. Valenza, C. Artini, A. Passerone… in Journal of Materials Engineering and Perfo… (2014)

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...

C. Artini, M. L. Muolo, A. Passerone, G. Cacciamani… in Journal of Materials Science (2013)

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...

S. **, F. Valenza, R. Novakovic, C. Leinenbach in Journal of Electronic Materials (2013)

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, ...

C. Leinenbach, F. Valenza, D. Giuranno, H. R. Elsener… in Journal of Electronic Materials (2011)

Article

The rule regulating pH changes during crystalloid infusion

To define the rule according to which crystalloid solutions characterized by different strong ion difference (SID) modify the acid–base variables of human plasma.

E. Carlesso, G. Maiocchi, F. Tallarini, F. Polli, F. Valenza… in Intensive Care Medicine (2011)

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...

G. W. Liu, F. Valenza, M. L. Muolo, A. Passerone in Journal of Materials Science (2010)

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...

D. Passerone, C. A. Pignedoli, F. Valenza, M. L. Muolo… in Journal of Materials Science (2010)

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...

F. Valenza, M. L. Muolo, A. Passerone in Journal of Materials Science (2010)

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...

G. W. Liu, F. Valenza, M. L. Muolo, G. J. Qiao… in Journal of Materials Science (2009)

Chapter and Conference Paper

Non-invasive Modulation of Intraabdominal Pressure

F. Valenza, L. Gattinoni in Yearbook of Intensive Care and Emergency Medicine 2005 (2005)