Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Optical microscopy, scanning electron microscopy, and transmission electron microscopy were employed to examine the interfacial microstructural effects of impurities in alumina substrates used to fabricate alumina-niobium interfaces via liquid-film-assisted joining. Three types of alumina were used: undoped high-purity single-crystal sapphire; a high-purity, high-strength polycrystalline alumina; and a lower-purity, lower-strength polycrystalline alumina. Interfaces formed between niobium and both the sapphire and high-purity polycrystalline alumina were free of detectable levels of impurities. In the lower-purity alumina, niobium silicides were observed at the alumina-niobium interface and on alumina grain boundaries near the interface. These silicides formed in small-grained regions of the alumina and were found to grow from the interface into the alumina along grain boundaries. Smaller silicide precipitates found on grain boundaries are believed to form upon cooling from the bonding temperature.
Effects of Impurities on Alumina-Niobium InterfacialMicrostructures
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Optical microscopy, scanning electron microscopy, and transmission electron microscopy were employed to examine the interfacial microstructural effects of impurities in alumina substrates used to fabricate alumina-niobium interfaces via liquid-film-assisted joining. Three types of alumina were used: undoped high-purity single-crystal sapphire; a high-purity, high-strength polycrystalline alumina; and a lower-purity, lower-strength polycrystalline alumina. Interfaces formed between niobium and both the sapphire and high-purity polycrystalline alumina were free of detectable levels of impurities. In the lower-purity alumina, niobium silicides were observed at the alumina-niobium interface and on alumina grain boundaries near the interface. These silicides formed in small-grained regions of the alumina and were found to grow from the interface into the alumina along grain boundaries. Smaller silicide precipitates found on grain boundaries are believed to form upon cooling from the bonding temperature.
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Optical microscopy, scanning electron microscopy, and transmission electron microscopy were employed to examine the interfacial microstructural effects of impurities in alumina substrates used to fabricate alumina-niobium interfaces via liquid-film-assisted joining. Three types of alumina were used: undoped high-purity single-crystal sapphire; a high-purity, high-strength polycrystalline alumina; and a lower-purity, lower-strength polycrystalline alumina. Interfaces formed between niobium and both the sapphire and high-purity polycrystalline alumina were free of detectable levels of impurities. In the lower-purity alumina, niobium silicides were observed at the alumina-niobium interface and on alumina grain boundaries near the interface. These silicides formed in small-grained regions of the alumina and were found to grow from the interface into the alumina along grain boundaries. Smaller silicide precipitates found on grain boundaries are believed to form upon cooling from the bonding temperature.
Processing and Characterization of Alumina-niobium Interfaces Produced Via Liquid-film-assisted Joining
Author: Joseph Thomas McKeown
Publisher:
ISBN:
Category :
Languages : en
Pages : 296
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 296
Book Description
Partial-transient-liquid-phase Bonding of AL2O3 Using N[subscript I]/N[subscript B] Interlayers and Examination of the Effects and Characterizations of Surface Roughness
Author: Christopher Clayton Bartlow
Publisher:
ISBN:
Category :
Languages : en
Pages : 374
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 374
Book Description
Effects of Processing Conditions and Ambient Environment on the Microstructure and Fracture Strength of Copper/niobium/copper Interlayer Joints for Alumina
Metals Abstracts
ASM Specialty Handbook
Author: Joseph R. Davis
Publisher: ASM International
ISBN: 9780871705969
Category : Technology & Engineering
Languages : en
Pages : 608
Book Description
Materials covered include carbon, alloy and stainless steels; alloy cast irons; high-alloy cast steels; superalloys; titanium and titanium alloys; refractory metals and alloys; nickel-chromium and nickel-thoria alloys; structural intermetallics; structural ceramics, cermets, and cemented carbides; and carbon-composites.
Publisher: ASM International
ISBN: 9780871705969
Category : Technology & Engineering
Languages : en
Pages : 608
Book Description
Materials covered include carbon, alloy and stainless steels; alloy cast irons; high-alloy cast steels; superalloys; titanium and titanium alloys; refractory metals and alloys; nickel-chromium and nickel-thoria alloys; structural intermetallics; structural ceramics, cermets, and cemented carbides; and carbon-composites.
Metal-Ceramic Interfaces
Author: M. Rühle
Publisher: Elsevier
ISBN: 1483287467
Category : Technology & Engineering
Languages : en
Pages : 448
Book Description
As engineering materials and structures often contain a metal or metallic alloy bonded to a ceramic, the resultant interface must be able to sustain mechanical forces without failure. They also play an important role in oxidation or reduction of materials. The workshop on 'Bonding, Structure and Mechanical Properties of Metal/Ceramic Interfaces' was held in January 1989 within the Acta/Scripta Metallurgica conference series. It drew together an international collection of 70 scientists who discussed a wide range of issues related to metal-ceramic interfaces. The sessions were divided into 7 categories: structure and bonding, chemistry at interfaces, formation of interfaces, structure of interfaces, thermodynamics/atomistics of interface fracture, mechanics of interface cracks, and fracture resistance of bimaterial interfaces. Within these headings attention was paid to grain boundaries, the influence of chemical processes on the behaviour of interfaces, diffusion bonding, characterization of fracture, and crack propagation by fatigue and by stress corrosion. The book presents a useful reference source for materials scientists, physicists, chemists, and mechanical engineers who are concerned with the roles and properties of interfaces.
Publisher: Elsevier
ISBN: 1483287467
Category : Technology & Engineering
Languages : en
Pages : 448
Book Description
As engineering materials and structures often contain a metal or metallic alloy bonded to a ceramic, the resultant interface must be able to sustain mechanical forces without failure. They also play an important role in oxidation or reduction of materials. The workshop on 'Bonding, Structure and Mechanical Properties of Metal/Ceramic Interfaces' was held in January 1989 within the Acta/Scripta Metallurgica conference series. It drew together an international collection of 70 scientists who discussed a wide range of issues related to metal-ceramic interfaces. The sessions were divided into 7 categories: structure and bonding, chemistry at interfaces, formation of interfaces, structure of interfaces, thermodynamics/atomistics of interface fracture, mechanics of interface cracks, and fracture resistance of bimaterial interfaces. Within these headings attention was paid to grain boundaries, the influence of chemical processes on the behaviour of interfaces, diffusion bonding, characterization of fracture, and crack propagation by fatigue and by stress corrosion. The book presents a useful reference source for materials scientists, physicists, chemists, and mechanical engineers who are concerned with the roles and properties of interfaces.
Metals Abstracts Index
Composite Materials
Author: Deborah D. L. Chung
Publisher: Springer Science & Business Media
ISBN: 1848828314
Category : Technology & Engineering
Languages : en
Pages : 358
Book Description
The first edition of "Composite Materials" introduced a new way of looking at composite materials. This second edition expands the book’s scope to emphasize application-driven and process-oriented materials development. The approach is vibrant yet functional.
Publisher: Springer Science & Business Media
ISBN: 1848828314
Category : Technology & Engineering
Languages : en
Pages : 358
Book Description
The first edition of "Composite Materials" introduced a new way of looking at composite materials. This second edition expands the book’s scope to emphasize application-driven and process-oriented materials development. The approach is vibrant yet functional.
THERMEC 2013
Author: B. Mishra
Publisher: Trans Tech Publications Ltd
ISBN: 3038264547
Category : Technology & Engineering
Languages : en
Pages : 2938
Book Description
Collection of selected, peer reviewed papers from THERMEC 2013, 8th International Conference on PROCESSING & MANUFACTURING OF ADVANCED MATERIALS Processing, Fabrication, Properties, Applications, December 2-6, 2013, Las Vegas, USA. The 470 papers are grouped as follows: Chapter 1: Al Alloys, Chapter 2: Mg Alloys (Prof Karl U. Kainer Symposium), Chapter 3: Ti Alloys/ Aerospace Structural Metallic Materials, Chapter 4: Steels, Chapter 5: TMP Microalloyed Steels (Prof. A. J. DeArdo Symposium), Chapter 6: High & Ultra High Temperature Materials, Chapter 7: Bio Materials, Chapter 8: Advanced Protective Coatings/Surface Engineering, Chapter 9: Composites (MMC, CMC)/ Nanocomposites/ Synthetic & Foams), Chapter 10: Interfaces & Grain Boundaries, Chapter 11: Fuel Cells, Hydrogen Storage Technologies, Batteries, Supercapacitors & Thermoelectric Materials, Chapter 12: Friction Stir Processing/Welding, Chapter 13: Materials Under Extreme Conditions, Chapter 14: Metallic Glasses/ Bulk Metallic Amorphous Materials, Chapter 15: Nanomaterials for Structural & Energy Applications, Chapter 16: Neutron Scattering & X-Ray Studies of Advanced Materials, Chapter 17: Modelling & Simulation, Chapter 18: Materials Performance, Chapter 19: Smart/Intelligent Materials & Processes, Chapter 20: Texture of Materials (Prof. G. Gottstein Symposium), Chapter 21: Ultra-Fine Grained Materials (Prof. T. G. Langdon Symposium), Chapter 22: Welding & Joining of Advanced and Special Materials
Publisher: Trans Tech Publications Ltd
ISBN: 3038264547
Category : Technology & Engineering
Languages : en
Pages : 2938
Book Description
Collection of selected, peer reviewed papers from THERMEC 2013, 8th International Conference on PROCESSING & MANUFACTURING OF ADVANCED MATERIALS Processing, Fabrication, Properties, Applications, December 2-6, 2013, Las Vegas, USA. The 470 papers are grouped as follows: Chapter 1: Al Alloys, Chapter 2: Mg Alloys (Prof Karl U. Kainer Symposium), Chapter 3: Ti Alloys/ Aerospace Structural Metallic Materials, Chapter 4: Steels, Chapter 5: TMP Microalloyed Steels (Prof. A. J. DeArdo Symposium), Chapter 6: High & Ultra High Temperature Materials, Chapter 7: Bio Materials, Chapter 8: Advanced Protective Coatings/Surface Engineering, Chapter 9: Composites (MMC, CMC)/ Nanocomposites/ Synthetic & Foams), Chapter 10: Interfaces & Grain Boundaries, Chapter 11: Fuel Cells, Hydrogen Storage Technologies, Batteries, Supercapacitors & Thermoelectric Materials, Chapter 12: Friction Stir Processing/Welding, Chapter 13: Materials Under Extreme Conditions, Chapter 14: Metallic Glasses/ Bulk Metallic Amorphous Materials, Chapter 15: Nanomaterials for Structural & Energy Applications, Chapter 16: Neutron Scattering & X-Ray Studies of Advanced Materials, Chapter 17: Modelling & Simulation, Chapter 18: Materials Performance, Chapter 19: Smart/Intelligent Materials & Processes, Chapter 20: Texture of Materials (Prof. G. Gottstein Symposium), Chapter 21: Ultra-Fine Grained Materials (Prof. T. G. Langdon Symposium), Chapter 22: Welding & Joining of Advanced and Special Materials