Fundamental principles of spark plasma sintering of metals: part II - about the existence or non-existence of the 'spark plasma effect'

被引:21
作者
Trapp, Johannes [1 ]
Semenov, Artem [2 ]
Eberhardt, Oliver [2 ]
Noethe, Michael [1 ]
Wallmersperger, Thomas [2 ]
Kieback, Bernd [1 ,3 ]
机构
[1] Tech Univ Dresden, Inst Mat Sci, Dresden, Germany
[2] Tech Univ Dresden, Inst Solid Mech, Dresden, Germany
[3] Fraunhofer Inst Mfg Technol & Adv Mat IFAM, Branch Lab Dresden, Bremen, Germany
关键词
Spark Plasma Sintering; Sintering; SPS; Metals; Powder; Joule Heating; Current Assisted Sintering; Field Assisted Sintering; FAST; Electromigration; Thermomigration; GRADIENT-DRIVEN DIFFUSION; PULSED DC CURRENT; SINTERING/SYNTHESIS PROCESS; ELECTRIC-FIELD; INITIAL-STAGE; ELECTROMIGRATION; POWDER; GROWTH; COPPER; THERMODIFFUSION;
D O I
10.1080/00325899.2020.1829349
中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
The mechanisms of densification in spark plasma sintering (SPS) were investigated both analytically and numerically for a model system of two spherical metallic powder particles. From the microscopic temperature distribution, the possibility of a micro-local overheating of the particle-particle contacts was analysed for different particle sizes, contact geometries, materials, and electrical loads. It is shown that, for particles below the size of one millimetre, local overheating is below one Kelvin. Subsequently, the material transport by thermomigration, electromigration, and diffusion driven by surface curvature and external pressure was derived from microscopic field distributions obtained from analytical calculations and finite-element simulations. The results show that, while the mechanical pressure accelerates material transport by orders of magnitude, the electrical current and the temperature gradients do not. It is also shown that pulsing the current has no significant influence on the densification rate.
引用
收藏
页码:312 / 328
页数:17
相关论文
共 86 条
[1]  
Adda Y, 1966, DIFFUSION SOLIDES
[2]   Fundamental investigations on the spark plasma sintering/synthesis process - II. Modeling of current and temperature distributions [J].
Anselmi-Tamburini, U ;
Gennari, S ;
Garay, JE ;
Munir, ZA .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2005, 394 (1-2) :139-148
[3]  
Ashby M.F., 1982, DEFORMATION MECH MAP
[4]  
Asokakumar P, 1996, APPL PHYS LETT, V68, P406, DOI 10.1063/1.116700
[5]   Electromigration effects in Al-Au multilayers [J].
Bertolino, N ;
Garay, J ;
Anselmi-Tamburini, U ;
Munir, ZA .
SCRIPTA MATERIALIA, 2001, 44 (05) :737-742
[6]  
Bulat Lev Petrovich, 2014, Advances in Science and Technology, V93, P168, DOI 10.4028/www.scientific.net/AST.93.168
[7]  
Carslaw HS., 1986, CONDUCTION HEAT SOLI
[8]  
Castro R H R, 2013, SINTERING MECH CONVE
[9]   Electromigration in submicron interconnect features of integrated circuits [J].
Ceric, H. ;
Selberherr, S. .
MATERIALS SCIENCE & ENGINEERING R-REPORTS, 2011, 71 (5-6) :53-86
[10]   Fundamental investigations on the spark plasma sintering/synthesis process - I. Effect of dc pulsing on reactivity [J].
Chen, W ;
Anselmi-Tamburini, U ;
Garay, JE ;
Groza, JR ;
Munir, ZA .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2005, 394 (1-2) :132-138