INTERFACE REACTION AND MECHANICAL PROPERTIES OF C/AL COMPOSITES WITH SIC COATING

1991 ◽  
pp. 240-243
Author(s):  
Xia Zhenhai
Keyword(s):  
Mechanical Properties ◽  
Interface Reaction

Effects of nanoparticles on properties and interface reaction of Sn solder for microelectronic packaging

2020 ◽  
Vol 34 (08) ◽  
pp. 2050064 ◽  
Author(s):  
Meng Zhao ◽  
Liang Zhang ◽  
Lei Sun ◽  
Ming-yue Xiong ◽  
Nan Jiang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Shear Strength ◽  
Melting Point ◽  
Composite Solder ◽  
Interface Reaction ◽  
Microelectronic Packaging ◽  
Cu Nanoparticles ◽  
Spreading Area ◽  
Melting Characteristics ◽  
Interfacial Intermetallic Compounds

In this study, the effects of Cu nanoparticles on the melting characteristics, wettability, interfacial reaction and mechanical properties of [Formula: see text]–[Formula: see text] [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text] composite solders were investigated. Results show that the properties of the composite solder containing Cu nanoparticles were improved effectively. With the addition of Cu nanoparticles, the melting point of [Formula: see text]–[Formula: see text] solder decreased significantly, and the spreading area and the shear strength were increased by 10.3% and 23.2%, respectively. For the performance, the optimal addition of Cu nanoparticles was 0.7%. In addition, the growth of interfacial intermetallic compounds in [Formula: see text]–[Formula: see text] solder joints was inhibited by adding Cu nanoparticles.

scholarly journals Interface Reaction and Mechanical Properties of Lead-free Sn-Zn Alloy/Cu Joints

2002 ◽  
Vol 43 (8) ◽  
pp. 1797-1801 ◽  
Author(s):  
Ikuo Shohji ◽  
Takao Nakamura ◽  
Fuminari Mori ◽  
Shinichi Fujiuchi
Keyword(s):  
Mechanical Properties ◽  
Interface Reaction ◽  
Lead Free ◽  
Zn Alloy

scholarly journals The Effect of Welding Speed on the Micromorphology and Mechanical Properties of Laser-Sealed Vacuum Flat Glazing Joints

2019 ◽  
Vol 2019 ◽  
pp. 1-5
Author(s):  
Hong Miao ◽  
Chong Li ◽  
Qiang He ◽  
Shanwen Zhang ◽  
Yanjun Zhang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Shear Strength ◽  
Welding Speed ◽  
Theoretical Basis ◽  
Interface Reaction ◽  
Input Energy ◽  
Wetting Layer ◽  
Vacuum Glazing ◽  
Sealing Layer

To explore the effect of welding speed on the micromorphology and mechanical properties of the laser-welded vacuum plate glazing joints, this paper introduced the research status of the laser welding vacuum glazing and then carried out the preparation for experimental materials. This paper also analyzed the microstructure, the cause of the pores, and the mechanical properties of the sealing layer. The results show that the smaller the welding speed is, the more fully the solder melts. When the welding speed is 80 mm/min, the sealing layer generates the large thermal stress due to excessive laser input energy, which results in many connected cracks in the sealing layer. The porosity of the sealing layer increases with the increase of the welding speed. The thickness of the interface reaction wetting layer decreases with the increase of the welding speed. The hardness, tensile strength, and shear strength of the sealing layer will increase first and then decrease with the increase of welding speed. These studies can provide the theoretical basis for laser sealing manufacturing of vacuum plate glazing.

Interfacial Reaction Thermodynamics between Sn-Cu-Ag Solder and Ni Substrate

2013 ◽  
Vol 433-435 ◽  
pp. 2020-2024 ◽  
Author(s):  
Hong Yan Xu ◽  
Hu Wu ◽  
Bing Sheng Xu ◽  
Yan Wu
Keyword(s):  
Mechanical Properties ◽  
Interfacial Reaction ◽  
Reaction Rate ◽  
Sessile Drop ◽  
Interface Reaction ◽  
Sessile Drop Method ◽  
Ni Substrate ◽  
Reaction Thermodynamics ◽  
Key Factor ◽  
Contour Evolution

Interfacial reaction during wetting and spreading of Sn-Ag-Cu solder on Ni substrate is a key factor in order to improve the mechanical properties of the joints and the weld quality. Therefore, it’s important to focus on the thermodynamic and kinetic analysis of this interface reaction. In this paper, the sessile drop method was used to study the spreading contour evolution. The Kissinger method was used to calculate thermo-kinetic parameters of reactions between Sn-Ag-Cu solder and Ni substrate based on DTA data. The results show that Cu reduces activation energy and reaction rate of Sn-Ag-Cu/Ni system. (Cu, Ni)6Sn5 phase mainly constitute the interface reaction layer of Sn-Ag-Cu/Ni. As the temperature increases, partial (Cu, Ni)6Sn5 phase is substituted by Ni3Sn4 phase.

Bending Behavior and Electrical Conductivity of Cu/Ni/Al/Ni/Cu Clad Composite

2017 ◽  
Vol 909 ◽  
pp. 127-132 ◽  
Author(s):  
Hyung Jin Kim ◽  
Sun Ig Hong
Keyword(s):  
Mechanical Properties ◽  
Electrical Conductivity ◽  
Reaction Layer ◽  
Work Hardening ◽  
Annealing Temperature ◽  
Nickel Coating ◽  
Interface Reaction ◽  
Interface Bonding ◽  
The Matrix ◽  
Bending Behavior

In this study, electro nickel coating was applied and its effect on the electrical conductivity and mechanical properties was investigated in Cu/Ni/Al/Ni/Cu clad composite after annealing at various temperature. After annealing at 300OC for 3hrs, the interface reaction layer at the Cu/Al interface was observed to be 3μm and no reaction layer was observed at the Ni/Al interface. After annealing above 400OC for 3hrs, the interface reaction layer at the Cu/Al interface in the absence of Ni layer was observed to grow more rapidly with increase of annealing temperature compared to that at the Ni/Al interface. The electrical conductivity increased after annealing up to 300OC for 3 hrs. possibly because of enhanced interface bonding and the recovery in the matrix. However, it was deteriorated after annealing above 400OC for 3 hrs. because of the formation of interface intermetallic. The more localized bending in the as-roll-bonded clad composite and that annealed at 200°C can be attributed to the near-zero and negative hardening rate in bending over the whole displacement. In this case, once bending occurs, bending continue to occur in the localized region because the work hardening due to the localized bending is negligible, leading to the localized fracture.

Progress on Preparation, Microstructure and Property of Graphene Reinforced Aluminum Matrix Composite

2017 ◽  
Vol 898 ◽  
pp. 917-932 ◽  
Author(s):  
Yong Wang ◽  
Ji Xue Zhou ◽  
Kai Ming Cheng ◽  
Jian Hua Wu ◽  
Yuan Sheng Yang
Keyword(s):  
Mechanical Properties ◽  
Aluminum Matrix ◽  
Interface Reaction ◽  
Aluminum Matrix Composite ◽  
Interfacial Structure ◽  
Dimensional Structure ◽  
Aluminum Matrix Composites ◽  
Matrix Composites ◽  
The Matrix ◽  
Dispersion Technique

Graphene with unique two-dimensional structure and excellent mechanical properties, is one of the most ideal reinforcements. With the increasing progress of aluminum matrix composites, graphene reinforced aluminum matrix composites have attracted great interests. This paper mainly reviews the latest progress on preparation of graphene reinforced aluminum matrix composites, and especially discusses the effective dispersion technique of graphene. Meanwhile, the microstructure and interfacial structure of graphene reinforced aluminum matrix composites are also emphasized and discussed. The results showed that graphene can significantly improve the mechanical properties of composites and refine the matrix grain. By controlling preparation parameters, the graphene agglomeration can be effectively solved, and the adverse interface reaction between graphene and substrate can be avoided. Finally, the current challenges and solutions of graphene reinforced aluminum matrix composites were presented.

Microstructure and Mechanical Properties of Laminated Mg-Based Composites

2014 ◽  
Vol 941-944 ◽  
pp. 883-886
Author(s):  
Guang Ji Xue ◽  
Shou Ren Wang ◽  
Ping Li ◽  
Yang Qiao ◽  
Ying Han
Keyword(s):  
Mechanical Properties ◽  
Magnesium Alloy ◽  
Aluminum Powder ◽  
Sintering Temperature ◽  
Design Method ◽  
Interface Reaction ◽  
Role Playing ◽  
Titanium Mesh ◽  
Alloy Plate ◽  
Laminated Material

A new design method to achieve the laminated Ti-Al-Mg composites by stack processing with magnesium alloy plate, aluminum powder, titanium mesh and vacuum hot-pressed sintered. Sintering laminated material in different sintering temperature. The microstructure, ingredient, structure of laminated material and the interface of Ti-Al, Mg-Al were analyzed by SEM and EDS. Test results show that the optimum sintering temperature is 550 oC, and after sintered the aluminum powder and magnesium alloy plate hang together relatively tight by slight interface reaction, and aluminum powder can able to better coating the titanium mesh within the matrix. Mechanical property test found that titanium mesh is role-playing the reinforcement in laminated material, and makes the mechanical properties of laminated material improving significantly.

scholarly journals Microstructures and Mechanical Properties of Mg-9Al/Ti Metallurgical Bonding Prepared by Liquid-Solid Diffusion Couples

Metals ◽  
2018 ◽  
Vol 8 (10) ◽  
pp. 778 ◽  
Author(s):  
Jiahong Dai ◽  
Bin Jiang ◽  
Qiong Yan ◽  
Hongmei Xie ◽  
Zhongtao Jiang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Shear Strength ◽  
Treatment Time ◽  
Interface Reaction ◽  
Heat Treatment Time ◽  
Diffusion Couples ◽  
Solid Diffusion ◽  
Metallurgical Bonding ◽  
Microstructures And Mechanical Properties

Microstructures and mechanical properties of Mg-9Al/Ti metallurgical bonding prepared by liquid-solid diffusion couples were investigated. The results indicate that a metallurgical bonding was formed at the interface Mg-9Al/Ti, and the Mg17Al12 phase growth coarsening at the interfaces with the increase in heat treatment time. Push-out testing was used to investigate the shear strength of the Mg-9Al/Ti metallurgical bonding. It is shown that the shear strength presents an increasing tendency with the increased heat treatment time. The sequence is characterized, and the results show that the fracture takes place along the Mg-9Al matrix at the interface. The diffusion of Al and Ti elements play a dominant role in the interface reaction of Mg-9Al/Ti metallurgical bonding. By energy-dispersive spectroscopy (EDS), X-ray diffraction (XRD) and thermodynamic analysis, it was found that Al3Ti is the only intermetallic compound at the interface of Mg-9Al/Ti metallurgical bonding. These results clearly show that chemical interaction at the interface formation of Al3Ti improves the mechanical properties of Mg-9Al/Ti metallurgical bonding.

Microstructure and Strengthening Mechanism of TiCp/ZA-12 Composites

2007 ◽  
Vol 348-349 ◽  
pp. 221-224 ◽  
Author(s):  
Wang Xiang ◽  
Guo Bing Ying
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Scanning Electron Microscopy ◽  
Interface Reaction ◽  
Matrix Alloy ◽  
Strengthening Mechanism ◽  
Strengthening Mechanisms ◽  
Dispersion Strengthening ◽  
Transmission Electron ◽  
Scanning Electron

TiCp/ZA-12 composites have been fabricated by XDTM method and stirring-casting techniques. Microstructure of the composites has been studied by means of scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results show that TiC particles distribute uniformly in ZA-12 matrix alloy. The interface between reinforcements and matrix alloy is very clean, and there is not interface reaction between TiC particles and ZA-12 matrix alloy. The tests for mechanical properties reveal that the tensile strength, yield strength, elastic modulus and hardness of the composites are improved obviously due to the incorporation of TiC particles. The strengthening mechanisms are attributed to the following factors: dispersion strengthening of TiC particles, grain refinement of ZA-12 matrix alloy and high-density dislocations existing in ZA-12 alloy.

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