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Meeting 2024 TMS Annual Meeting & Exhibition
Symposium Electronic Packaging and Interconnection Materials
Presentation Title The Formation of Ag Nodule Structures From Ag-Si Metastable States
Author(s) Koji S. Nakayama, Minoru Ueshima, Masahiko Nishijima, Chuantong Chen, Katsuaki Suganuma
On-Site Speaker (Planned) Koji S. Nakayama
Abstract Scope The eutectic alloy of Au-Si has received attention for a bonding technology because it has the advantages of low thermal expansion coefficient, high mechanical strength, and high electrical conductivity. However, the noble metal of Au is limited by cost, which prevents its wide application as a bonding material. We study the metastable states of a rapidly quenched Ag-Si alloy. We find that the amorphous state of Si is formed by the eutectic phase separation, and that the unprecedented growth of crystalline Ag nodules on the particles is thermally activated above 250 °C in the presence of oxygen. The key to nodule formation is that the solute Si in the Ag matrix of the solid solution reacts with oxygen to form silicon monoxide. The growth of nodules with high crystallinity builds a bridge between Ag-Si particles, indicating the possibility of use as a bonding material.
Proceedings Inclusion? Planned:
Keywords Electronic Materials, Joining, Powder Materials

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A-18: Effect of Ni/Ga Ratio on Fabrication of Cu-to-Cu Joints by Using Electroplated Ga Layer and Ni UBM
A-19: Fatigue Life of Selective Laser Solder Joints of a MEMS Probe for Automotive Semiconductor Wafer Test
A-20: Self-organization Assembly Solder Resin for Fine Pitch Components Bonding Application
A-35: Wetting Kinetics and Microstructure of Micro-textured Surface Modified Copper Substrate During Soldering
Additive-induced Crystallization of Highly (111) Textured Cu Nanotwins by Electroless Deposition
Anisotropic Effects in Electromigration Enhanced Intermetallic Growth in Sn Based Solders
Annealing Effect on the Electro-recrystallization of Tin
Contribution of Ni Microalloying to the Cu Dissolution of In-35Sn/Cu Solder Joint After Multiple Reflows
Controlling Porosity During Transient Liquid Phase Soldering for Power Modules
Corrosion Induced Fracture of Cu/Al Interconnects in Microelectronics Packages
Cryogenic Mechanical Properties and Time-temperature Dependent Phase Transformations of Ultra-low Temperature In-Sn-Bi Solder Alloys
Cu-Cu Interconnection With Electroplated Ga and Ni UBM
Development of Low-temperature Cu-to-Cu Direct Bonding Technology Using Glycerol Vapor as Cu Surface Antioxidant
Effect of Epoxy Material and Gold Wire Configuration on Light-emitting Diode Encapsulation Process
Effect of Grain Size and Stress Relaxation on Whisker Growth Under Applied Pressure
Effect of Microstructure of Ag on the Growth of Intermetallic Compound in Ag-In System During Isothermal Reflow Process
Effect of Sb and Ag Addition on the Melting and Solidification of Near-eutectic Sn-Bi Solder Alloys
Effects of Sb Addition on the Mechanical Behavior of Eutectic Sn-Bi Solder Alloys
Electro-recrystallization in Pure Cu Metal Induced by Current Stressing: A Comprehensive Study of Microstructure, Crystallinity, and Properties
Electromigration Behavior of Nano-twinned Cu-Ag Alloy Thin Films
Electromigration Test of Electroless Copper Plating Interconnection
Enhancing Joint Strength and Microstructural Modification Through the Addition of Eco-friendly Nanofibers in SAC Solder
Impact of Current Induced Joule Heat Variation on Low Melting Temperature Solder Joint Stability
Impact of Microstructure on the Joule Heat Behaviors of Solder Interconnects
Improved Lifetime of an Electrophoretic Display Based on Solvent and Sealant Engineering
In-situ Characterisation of the Time-temperature Dependent Structural Changes in Sn-Bi Alloys
Interfacial Reaction Between Electroplated Indium and Copper Substrate
Interfacial Reactions Between the Molten Sn Solder and Cu-2.3Fe wt.% (C194) Substrate
Investigation of In-passivated Cu-to-Cu Direct Bonding With a Sn Diffusion Barrier Layer
Investigations of Current-induced Grain Growth and Properties Variation in Pure Ag Metal Under Extremely High Current Density
Low-temperature Direct Bonding of Co-sputtered Cu-Ag Alloy Thin Films
Low-temperature Direct Bonding of Co-sputtered Nano-twinned Cu-Ag Alloy Thin Films
Microstructural Fingerprints for Secure Microelectronic Packaging
Microstructure, Texture, and Properties Evolutions in Pure Nickel Metal Under High-density Electric Current Stressing
New Insights Into the Role of Microstructure on the Thermal Fatigue Performance of BGA Packages
Numerical Modeling the Effect of Copper Solute on Electromigration Stress Development in Al Interconnects
Phase Formation and Transformation Behavior in Rapidly Solidified Ag-Si Alloys
Reliability of Silver─tin Alloy Sintering for Power Electronic Applications
Strain-controlled High-cycle Fatigue of Solder Joints for High-reliability Environments
Surface Precipitation and Growth Mechanisms of Bismuth Particles in Sn-Bi Solder
The Conductivity and Mechanical Properties of Hybrid Carbon Black/Copper Filled Linear Low-density Polyethylene (LLDPE) and Liquid Silicone Rubber (LSR) Flexible Conductive Polymer Composites for Electronic Interconnect Applications.
The Effect of Surface Roughness on Spreading of SAC305 on Ag Substrates
The Formation of Ag Nodule Structures From Ag-Si Metastable States
The Kinetic Analysis and Inhibition Efficiency of the Anti-immersion Agent for the Ag Replacement Reaction.
The Role of FeCoNiMn as a Diffusion Barrier in Solder Joints During Thermomigration
Thermal Strain Measurement of Solder Joint in Electronic Packages
Towards Practical Demountable Joints for Fusion Devices - Microstructure Formation and its Stability in the In-Bi-Sn Ultra-low-temperature Eutectic Soldering Alloy

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