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Spark-Plasma Sintering and Related Field-Assisted Powder Consolidation Technologies

2018-07-02 Business & Economics
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Release : 2018-07-02
Genre : Business & Economics
Kind : eBook
Book Rating : 823/5 ( reviews)

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Book Synopsis Spark-Plasma Sintering and Related Field-Assisted Powder Consolidation Technologies by : Eugene A. Olevsky

Download or read book Spark-Plasma Sintering and Related Field-Assisted Powder Consolidation Technologies written by Eugene A. Olevsky. This book was released on 2018-07-02. Available in PDF, EPUB and Kindle. Book excerpt: Electromagnetic field-assisted sintering techniques have increasingly attracted attention of scientists and technologists. Spark-plasma sintering (SPS) and other field-assisted powder consolidation approaches provide remarkable capabilities to the processing of materials into configurations previously unattainable. Of particular significance is the possibility of using very fast heating rates, which, coupled with the field-assisted mass transport, stand behind the purported ability to achieve high densities during consolidation and to maintain the nanostructure of consolidated materials via these techniques. Potentially, SPS and related technologies have many significant advantages over the conventional powder processing methods, including the lower process temperature, the shorter holding time, dramatically improved properties of sintered products, low manufacturing costs, and environmental friendliness.

Field-Assisted Sintering

2018-08-09 Technology & Engineering
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Release : 2018-08-09
Genre : Technology & Engineering
Kind : eBook
Book Rating : 327/5 ( reviews)

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Book Synopsis Field-Assisted Sintering by : Eugene A. Olevsky

Download or read book Field-Assisted Sintering written by Eugene A. Olevsky. This book was released on 2018-08-09. Available in PDF, EPUB and Kindle. Book excerpt: This book represents the first ever scientific monograph including an in-depth analysis of all major field-assisted sintering techniques. Until now, the electromagnetic field-assisted technologies of materials processing were lacking a systematic and generalized description in one fundamental publication; this work promotes the development of generalized concepts and of comparative analyses in this emerging area of materials fabrication. This book describes modern technologies for the powder processing-based fabrication of advanced materials. New approaches for the development of well-tailored and stable structures are thoroughly discussed. Since the potential of traditional thermo-mechanical methods of material treatment is limited due to inadequate control during processing, the book addresses ways to more accurately control the resultant material's structure and properties by an assisting application of electro-magnetic fields. The book describes resistance sintering, high-voltage consolidation, sintering by low-voltage electric pulses (including spark plasma sintering), flash sintering, microwave sintering, induction heating sintering, magnetic pulse compaction and other field-assisted sintering techniques. Includes an in-depth analysis of all major field-assisted sintering techniques; Explains new techniques and approaches for material treatment; Provides detailed descriptions of spark plasma sintering, microwave sintering, high-voltage consolidation, magnetic pulse compaction, and various other approaches when field-assisted treatment is applied.

Spark Plasma Sintering: Current Status, New Developments and Challenges

2019-06-17 Technology & Engineering
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Release : 2019-06-17
Genre : Technology & Engineering
Kind : eBook
Book Rating : 446/5 ( reviews)

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Book Synopsis Spark Plasma Sintering: Current Status, New Developments and Challenges by : Giacomo Cao

Download or read book Spark Plasma Sintering: Current Status, New Developments and Challenges written by Giacomo Cao. This book was released on 2019-06-17. Available in PDF, EPUB and Kindle. Book excerpt: Spark Plasma Sintering: Current Status, New Developments and Challenges: A Review of the Current Trends in SPS looks at the progress made in the field of SPS. It includes a review of the scientific mechanisms, materials synthesis and industry applications for this processing technique. Chapters are written by leading experts in the field, encompassing topics surrounding the densification mechanism and microstructure evolution, the classification of high-performance materials, a review of numerical simulation, discussions of new technology advances, such as HP-SPS, flash sintering and related challenges. This book will be useful for researchers, engineers and students within the materials science and engineering fields. Provides significant information on the most relevant research topics currently being addressed by the SPS community Highlights the application of SPS techniques Reviews critical issues that still need to be overcome when utilizing SPS technology

Spark Plasma Sintering of Materials

2019-02-18 Technology & Engineering
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Release : 2019-02-18
Genre : Technology & Engineering
Kind : eBook
Book Rating : 27X/5 ( reviews)

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Book Synopsis Spark Plasma Sintering of Materials by : Pasquale Cavaliere

Download or read book Spark Plasma Sintering of Materials written by Pasquale Cavaliere. This book was released on 2019-02-18. Available in PDF, EPUB and Kindle. Book excerpt: This book describes spark plasma sintering (SPS) in depth. It addresses fundamentals and material-specific considerations, techniques, and applications across a broad spectrum of materials. The book highlights methods used to consolidate metallic or ceramic particles in very short times. It highlights the production of complex alloys and metal matrix composites with enhanced mechanical and wear properties. Emphasis is placed on the speed of the sintering processes, uniformity in product microstructure and properties, reduced grain growth, the compaction and sintering of materials in one processing step, various materials processing, and high energy efficiency. Current and potential applications in space science and aeronautics, automation, mechanical engineering, and biomedicine are addressed throughout the book.

Influence of Electric Current on Efficiency of Field Assisted Consolidation of Powder Materials

2018
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Release : 2018
Genre :
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Book Synopsis Influence of Electric Current on Efficiency of Field Assisted Consolidation of Powder Materials by : Geuntak Lee

Download or read book Influence of Electric Current on Efficiency of Field Assisted Consolidation of Powder Materials written by Geuntak Lee. This book was released on 2018. Available in PDF, EPUB and Kindle. Book excerpt: Spark plasma sintering (SPS) has clear advantages of fast densification and lower grain growth compared with other powder consolidation techniques such as hot pressing (HP). Many researchers studied intrinsic electric current effects during the SPS process, yet the results of these studies are still controversial due to the complexity of the SPS technology. In this study, we investigate various consolidation methods with and without electric current assistance to achieve the deconvolution of the electric current effects from the temperature effects. The spatial distribution of the electric current passing through the powder during SPS is modeled using the finite element method. The porosity-interparticle neck area geometrical relationship is utilized to estimate the electric current density inside the powder volume subjected to SPS. For the first time, by taking into account the explicit influence of the electric current effect on the SPS densification mechanisms, the governing equations describing hot pressing are modified to enable an SPS-specific constitutive analysis. The densification mechanisms of various ceramic (ZrN) and metallic (W and Mo) powders are determined by the inverse regression of the new SPS constitutive equations and by utilizing the experimental results on powder consolidation with and without the participation of the electric current effect. We show that the electron backscatter diffraction (EBSD) technique can be a useful tool to demonstrate the densification mechanism of the powders during the sintering. The grain size and grain growth factors are incorporated into the sintering constitutive equation too to elucidate the grain growth effect on the material behavior governing parameters. Additionally, the known but controversial intrinsic electric current effects such as surface cleaning and retardation of the grain growth are analyzed for the consolidation of the Mo nanopowders using SPS. Finally, an energy efficient and fast consolidation technique utilizing the highly concentrated electric current flow through a conductive powder by manipulating the electric current trajectory is developed.

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