Abstract
Aluminum (Al)/stainless steel (SUS) clad materials were fabricated via the process of spark plasma sintering (SPS) using Al powder/bulk and an SUS sheet. Three Al/SUS clad types were fabricated: powder/bulk (P/B), bulk/bulk (B/B), and bulk/powder/bulk (B/P/B). During the SPS, Al and SUS reacted with each other, and intermetallic compounds were created in the clads. The thermal conductivity and thermal-expansion coefficient were measured using a laser flash analyzer and dynamic mechanical analyzer, respectively. The Al/SUS (P/B) clad had a thermal conductivity of 159.5 W/mK and coefficient of thermal expansion of 15.3 × 10−6/°C. To analyze the mechanical properties, Vickers hardness and three-point bending tests were conducted. The Al/SUS (P/B) clad had a flexural strength of about 204 MPa. The Al/SUS clads fabricated via SPS in this study are suitable for use in applications in various engineering fields requiring materials with high heat dissipation and high heat resistance.
Highlights
The demand for high-performance materials in various industrial fields is increasing, and the material industry is gaining importance as a technology-intensive and high-value industry [1,2,3,4].Metallic materials are core base materials accounting for more than 60% of all basic industrial materials.They are widely used in infrastructureand basic industries, and as a core base material in high-technology industries, such as robotics and information technology
We found that the temperature of the spark plasma sintering (SPS) process affected intermetallic compounds (ICs) thickness [18]
Al/SUS clad materials were successfully fabricated via SPS using Al powder and bulk, and an SUS
Summary
The demand for high-performance materials in various industrial fields is increasing, and the material industry is gaining importance as a technology-intensive and high-value industry [1,2,3,4].Metallic materials are core base materials accounting for more than 60% of all basic industrial materials.They are widely used in infrastructure (bridges, harbors, architecture, power generation, etc.)and basic industries (chemicals, machinery, automobiles, shipbuilding, etc.), and as a core base material in high-technology industries, such as robotics and information technology. Metallic materials are core base materials accounting for more than 60% of all basic industrial materials. They are widely used in infrastructure (bridges, harbors, architecture, power generation, etc.). Aluminum (Al) and stainless steel (SUS) are typical metal materials used in many industrial fields. Al is a typical lightweight metal with a density as low as one-third that of steel, and it is used as a functional material in next-generation automobiles and transportation equipment [8]. Metal-matrix composites are highly valued in industrial applications because they can exhibit various functions by appropriately utilizing the functionality of each original material [10]. There are various methods for fabricating metal-matrix composites; the clad material
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