Experimental determination of phase equilibria and reassessment of Ag-Pd system

ZEMANOVÁ, Adéla, Jiří SOPOUŠEK and Jan VŘEŠŤÁL. Experimental determination of phase equilibria and reassessment of Ag-Pd system. In CALPHAD XXXVIII (May 17-22, 2009). 2009.

Basic information

• Original name: Experimental determination of phase equilibria and reassessment of Ag-Pd system
• Name in Czech: Experimantální stanovení fázových rovnováh a reassessment soustavy Ag-Pd
• Name (in English): Experimental determination of phase equilibria and reassessment of Ag-Pd system
• Authors: ZEMANOVÁ, Adéla (203 Czech Republic), Jiří SOPOUŠEK (203 Czech Republic, guarantor, belonging to the institution) and Jan VŘEŠŤÁL (203 Czech Republic, belonging to the institution).
• Edition: CALPHAD XXXVIII (May 17-22, 2009), 2009.

Other information

• Original language: Czech
• Type of outcome: Conference abstract
• Field of Study: 10403 Physical chemistry
• Country of publisher: Slovakia
• Confidentiality degree: is not subject to a state or trade secret
• RIV identification code: RIV/00216224:14310/09:00051154
• Organization unit: Faculty of Science
• UT WoS: 000281019900034
• Keywords (in Czech): CALPHAD; termická analýza; fázové diagramy
• Keywords in English: CALPHAD; thermal analysis; phase diagram
• Tags: CALPHAD, IK, Phase diagram, rivok, Thermal analysis
• Tags: International impact

Abstract

In lead-free soldering, the silver is usually used as solder component and palladium often as component of substrate. Therefore, Ag-Pd system is of interest for possible interference of components in solder joints. The system Ag-Pd reveals simple liquidus-solidus two phase region [1]. An enthalpy of mixing of liquid Ag-Pd solution was evaluated recently [2]. In this work an additional DSC determination of solidus and liquidus temperatures at chosen compositions was performed. Existing assessment [1] of thermodynamic and phase equilibrium data in the Ag-Pd system was revised on the base of calorimetric data for liquid Ag-Pd alloys [2] and DSC measurement. New determination of liquidus and solidus temperatures using DSC method in this work confirmed substantially narrower liquid/fcc two-phase field in phase diagram, in agreement with the reassessment.

Abstract (in English)

In lead-free soldering, the silver is usually used as solder component and palladium often as component of substrate. Therefore, Ag-Pd system is of interest for possible interference of components in solder joints. The system Ag-Pd reveals simple liquidus-solidus two phase region [1]. An enthalpy of mixing of liquid Ag-Pd solution was evaluated recently [2]. In this work an additional DSC determination of solidus and liquidus temperatures at chosen compositions was performed. Existing assessment [1] of thermodynamic and phase equilibrium data in the Ag-Pd system was revised on the base of calorimetric data for liquid Ag-Pd alloys [2] and DSC measurement. New determination of liquidus and solidus temperatures using DSC method in this work confirmed substantially narrower liquid/fcc two-phase field in phase diagram, in agreement with the reassessment.

Links

• MSM0021622410, plan (intention): Name: Fyzikální a chemické vlastnosti pokročilých materiálů a struktur

Investor: Ministry of Education, Youth and Sports of the CR, Physical and chemical properties of advanced materials and structures

• OC09010, research and development project: Name: Studium termodynamických vlastností a fázových diagramů soustav pro vysokoteplotní bezolovnaté pájky

Investor: Ministry of Education, Youth and Sports of the CR, Thermodynamic and Phase Diagram Studies of Systems for High Temperature Lead-Free Solders