Production and Properties of a 90%Si-Al Alloy for Electronic Packaging Applications

2009 ◽  
Vol 610-613 ◽  
pp. 542-545 ◽  
Author(s):  
Kun Yu ◽  
Chao Li ◽  
Jun Yang ◽  
Zhi Yong Cai
Keyword(s):  
Physical Properties ◽  
Electronic Packaging ◽  
Heat Dissipation ◽  
Thermal Conductivity Coefficient ◽  
Coefficient Of Thermal Expansion ◽  
Spray Forming ◽  
Al Alloy ◽  
Scanning Electronic Microscopy ◽  
Alloy Specimen ◽  
Forming Process

The high silicon content Si-Al alloy is a typical heat dissipation material that used in the electrical packaging field. A spray forming process wais used to produce a 90%Si-Al alloy specimen as a heat dissipation material in the present study. Then the spray formed 90%Si-Al specimens weare hot pressed at 1000°C with different pressure ranged from 2MPa to 10MPa to increase their density. The physical properties of the experimental alloy specimen weare measured. And the microstructure wass are observed by using optical microscopy and scanning electronic microscopy. The results showed that the Spray forming wais suitable forto producinge a 90%Si-Al alloy. With hot pressure of 10MPa, the relative density value of 90%Si-Al reachedcan obtain 94%. The typical physical properties such as the thermal conductivity, coefficient of thermal expansion and electrical conductivity of 90%Si-Al alloy are acceptable as a heat dissipation material for many electronic packaging applications.

Microstructure and Thermal Physical Properties of a β­SiCp/Al Composite for Electronic Packaging Produced by Powder Metallurgy

2017 ◽  
Vol 727 ◽  
pp. 565-570
Author(s):  
Yan Yan Shi ◽  
Xiao Gang Wang ◽  
Jun Tao Liu
Keyword(s):  
Physical Properties ◽  
Electronic Packaging ◽  
Volume Fraction ◽  
Coefficient Of Thermal Expansion ◽  
Weight Ratio ◽  
Pressing Method ◽  
Al Composite ◽  
The Relationship ◽  
Thermal Physical Properties ◽  
Sic Particle

The fabrication and thermal physical properties contain thermal conductivity (TC) and coefficient of thermal expansion (CTE) using 40%、50%、60% vol% β-SiC particle reinforced Al composite for electronic packaging respectively have been analyzed. The composites were produced by ball milling and pressing method. The composite which fabricated by tri-sized β-SiC particle with a weight ratio of 17:7:1,vol% of 50% and 60%.The dense and morphology were investigated. The relationship between volume fraction of β-SiC particle and thermal physical properties was discussed. Changed the volume fraction of β-SiC particle will led to a decreasing or increasing of TC and CTE. It found that values of TC and CTE were achieved their maximum balance when using tri-sized β-SiC particle of 160μm ,125μm as well as 38μm with a weight ratio of 17:7:1 and 50%vol of β-SiC particle reinforcing.

Microstructure and Properties of Al-Zn-Mg-Cu-Mn In Situ High Strength Alloy

2007 ◽  
Vol 561-565 ◽  
pp. 957-960
Author(s):  
Yuan Hua Cai ◽  
Hua Cui ◽  
Yong Bing Li ◽  
Jing Feng Hang ◽  
Ji Shan Zhang
Keyword(s):  
Solid Solution ◽  
Hot Extrusion ◽  
High Strength ◽  
Spray Forming ◽  
Al Alloy ◽  
Forming Process ◽  
Alloy Matrix ◽  
Strength Alloy ◽  
Average Size ◽  
Boundary Deformation

Al-Zn-Mg-Cu alloy containing 2%Mn was made using spray forming method and hot extrusion. XRD, OM, and SEM were used to investigate the microstructure. Results showed that after being hot extruded and solid solution treated, the Al alloy matrix had uniformly fine recrystallized grain with an average size of 8μm. The particles of MnAl6 were formed during the spray forming process and distributed along the grain boundary. Deformation and spheroidization of MnAl6 particles were occurred during post hot extrusion and solid solution treament, which would be benefit to the improvement of toughness of Al alloy. When aged at the T6 conditions, the tensile strength of the Al alloy was increased up to 775MPa with the elongation of 4.3%, the fracture surface consisted mainly of dimples with a size lower than 500nm.

Microstructure and Thermo-Physical Properties of TiB2/Si-30Al Composite for Electronic Packaging Applications

2011 ◽  
Vol 687 ◽  
pp. 138-143 ◽  
Author(s):  
Gui Sheng Gan ◽  
Lei Zhang ◽  
Yi Lu ◽  
Bin Yang
Keyword(s):  
Thermal Expansion ◽  
Physical Properties ◽  
Coefficient Of Thermal Expansion ◽  
Hot Isostatic Pressing ◽  
Spray Forming ◽  
Alloy Matrix ◽  
Primary Si ◽  
Thermo Physical Properties ◽  
Scanning Electron

2wt.%TiB2/Si-30Al composite was prepared by in-situ reaction and spray forming first and then by hot isostatic pressing (HIP). The microstructure and thermo-physical properties of the composite were investigated by means of scanning electron microscopy, and thermal expansion analyzer respectively. The results show that the microstructure of the TiB2/Si-30Al composite consists of a continuous network of primary Si (~35μm), interpenetrating secondary Al phase, and fine TiB2particles (1~2μm). The TiB2particles were uniformly distributed in the Si-30Al alloy matrix. After HIP, the pores in the TiB2/Si-30Al composite were almost eliminated, and the relative density of the composite was up to 98.9%. The 2wt.%TiB2/Si-30Al composite after the HIP exhibits good thermo-physical properties, including lower coefficient of thermal expansion (CTE) (6.6´10-6×K-1) and higher thermal conductivity (84 W×m-1×K-1).

Processing and Microstructure Properties of 7055-Al Alloy Prepared by Low-Pressure Spray Forming

2014 ◽  
Vol 574 ◽  
pp. 373-379
Author(s):  
Chao Run Si ◽  
Xian Jie Zhang ◽  
Jun Biao Wang
Keyword(s):  
Spray Forming ◽  
Cast Billet ◽  
Al Alloy ◽  
Technological Parameters ◽  
Forming Process ◽  
Lower Porosity ◽  
Median Diameter ◽  
Metal Forming Process ◽  
Atomization Efficiency ◽  
Atomization Pressure

Spray forming is a new developed advanced metal-forming process, of which the property benefits from rapid solidification. The porosity produced during the atomization progress can obviously decrease the material performance. In this paper, a self-designed Laval-type atomizer is used to improve atomization efficiency. The atomization results show that the atomizer can obtain well atomization effect at a relative lower atomization pressure, and the mass median diameter d50 is 63.5μm and 43.4μm when the atomization gas pressure P0=0.4 and 0.8MPa separately. The technological parameters are optimized by overall considering the atomized droplet size, gas consumption, deposition property, and the metal yield. By the designed atomizer, the as-deposited billet with lower porosity content can be obtained with the technological parameters of the melting temperature T=800°C, atomization pressure P0=0.6MPa, and spray distance h=500mm. Further test with the deposited billet show that the grain size of the spray formed 7055-Al alloy is mainly ranging 10~30μm, which is about one third of that of as-cast billet.

NILO ALLOY 36

Alloy Digest ◽  
1987 ◽  
Vol 36 (8) ◽  
Keyword(s):  
Thermal Expansion ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
Surface Treatment ◽  
Constant Coefficient ◽  
Coefficient Of Thermal Expansion ◽  
Heat Treating ◽  
Temperature Performance ◽  
Iron Nickel

Abstract NILO alloy 36 is a binary iron-nickel alloy having a very low and essentially constant coefficient of thermal expansion at atmospheric temperatures. This datasheet provides information on composition, physical properties, elasticity, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: Fe-79. Producer or source: Inco Alloys International Inc..

KANTHAL AF

Alloy Digest ◽  
1985 ◽  
Vol 34 (12) ◽  
Keyword(s):  
Physical Properties ◽  
Tensile Properties ◽  
Al Alloy

Abstract KANTHAL AF is an Fe-Cr-Al alloy intended for heating elements with element temperatures up to 1400 C. This datasheet provides information on composition, physical properties, hardness, and tensile properties. Filing Code: Fe-71. Producer or source: The Kanthal Corporation.

UNISPAN LR35

Alloy Digest ◽  
1971 ◽  
Vol 20 (1) ◽  
Keyword(s):  
Thermal Expansion ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
Surface Treatment ◽  
Tensile Properties ◽  
Coefficient Of Thermal Expansion ◽  
Heat Treating ◽  
Temperature Performance ◽  
Operational Level

Abstract UNISPAN LR35 offers the lowest coefficient of thermal expansion of any alloy now available. It is a low residual modification of UNISPAN 36 for fully achieving the demanding operational level of precision equipment. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and surface treatment. Filing Code: Fe-46. Producer or source: Cyclops Corporation.

DELTALLOY 4032

Alloy Digest ◽  
1998 ◽  
Vol 47 (4) ◽  
Keyword(s):  
Wear Resistance ◽  
Thermal Expansion ◽  
Physical Properties ◽  
Surface Treatment ◽  
Tensile Properties ◽  
Surface Finish ◽  
Coefficient Of Thermal Expansion ◽  
Single Point ◽  
High Strength ◽  
Corrosion And Wear

Abstract Deltalloy 4032 has good machinability and drilling characteristics when using single-point or multispindle screw machines and an excellent surface finish using polycrystalline or carbide tooling. The alloy demonstrates superior wear resistance and may eliminate the need for hard coat anodizing. Deltalloy 4032 is characterized by high strength and a low coefficient of thermal expansion. This datasheet provides information on composition, physical properties, and tensile properties. It also includes information on corrosion and wear resistance as well as machining and surface treatment. Filing Code: AL-347. Producer or source: ALCOA Wire, Rod & Bar Division.

RED X-20

Alloy Digest ◽  
1960 ◽  
Vol 9 (2) ◽  
Keyword(s):  
Wear Resistance ◽  
Thermal Expansion ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
Coefficient Of Thermal Expansion ◽  
Heat Treating ◽  
Aluminum Silicon Alloy ◽  
Temperature Performance

Abstract RED X-20 is a heat treatable hypereutectic aluminum-silicon alloy with excellent wear resistance and a very low coefficient of thermal expansion. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: Al-89. Producer or source: Apex Smelting Company.

AA 4032

Alloy Digest ◽  
1990 ◽  
Vol 39 (7) ◽  
Keyword(s):  
Thermal Expansion ◽  
Corrosion Resistance ◽  
Shear Strength ◽  
High Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
Coefficient Of Thermal Expansion ◽  
Heat Treating ◽  
Temperature Performance

Abstract AA 4032 has a comparatively low coefficient of thermal expansion and good forgeability. The alloy takes on an attractive dark gray appearance when anodized which may be desirable in architectural applications. This datasheet provides information on composition, physical properties, hardness, tensile properties, and shear strength as well as fatigue. It also includes information on low and high temperature performance, and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Al-305. Producer or source: Various aluminum companies.

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