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niobium
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Book: Corrosion: Materials
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003824
EISBN: 978-1-62708-183-2
... Abstract For chemical processing, niobium resists a wide variety of corrosive environments, including mineral acids, many organic acids, liquid metals, and most salt solutions. This article focuses on the mechanisms of corrosion resistance of niobium alloys in these environments. The niobium...
Abstract
For chemical processing, niobium resists a wide variety of corrosive environments, including mineral acids, many organic acids, liquid metals, and most salt solutions. This article focuses on the mechanisms of corrosion resistance of niobium alloys in these environments. The niobium alloys include Nb-1Zr, Nb-55Ti, Nb-50Ta, and Nb-40Ta. The article describes the use of these corrosion resistant niobium alloys, and provides information on applications of niobium in various industries.
Book Chapter
Book: Alloy Phase Diagrams
Series: ASM Handbook
Volume: 3
Publisher: ASM International
Published: 27 April 2016
DOI: 10.31399/asm.hb.v03.a0006244
EISBN: 978-1-62708-163-4
... Abstract This article is a compilation of ternary alloy phase diagrams for which niobium (Nb) is the first-named element in the ternary system. The diagrams are presented with element compositions in weight percent. The article includes 2 phase diagrams: Nb-Ti-W isothermal section at 600 °C...
Abstract
This article is a compilation of ternary alloy phase diagrams for which niobium (Nb) is the first-named element in the ternary system. The diagrams are presented with element compositions in weight percent. The article includes 2 phase diagrams: Nb-Ti-W isothermal section at 600 °C; and Nb-Ti-W isothermal section at 1000 °C.
Book Chapter
Book: Alloy Phase Diagrams
Series: ASM Handbook
Volume: 3
Publisher: ASM International
Published: 27 April 2016
DOI: 10.31399/asm.hb.v03.a0006187
EISBN: 978-1-62708-163-4
... Abstract This article is a compilation of binary alloy phase diagrams for which niobium (Nb) is the first named element in the binary pair. The diagrams are presented with element compositions in weight percent. The atomic percent compositions are given in a secondary scale. For each binary...
Abstract
This article is a compilation of binary alloy phase diagrams for which niobium (Nb) is the first named element in the binary pair. The diagrams are presented with element compositions in weight percent. The atomic percent compositions are given in a secondary scale. For each binary system, a table of crystallographic data is provided that includes the composition, Pearson symbol, space group, and prototype for each phase.
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001110
EISBN: 978-1-62708-162-7
... Abstract Niobium-titanium alloys (NbTi) became the superconductors of choice in the early 1960s, providing a viable alternative to the A-15 compounds and less ductile alloys of niobium-zirconium. This can be attributed to the relative ease of fabrication, better electrical properties...
Abstract
Niobium-titanium alloys (NbTi) became the superconductors of choice in the early 1960s, providing a viable alternative to the A-15 compounds and less ductile alloys of niobium-zirconium. This can be attributed to the relative ease of fabrication, better electrical properties, and greater compatibility with copper stabilizing materials. This article discusses the ramifications of design requirements, selection criteria and processing methods of superconducting fibers and matrix materials. It provides information on the various steps involved in the fabrication of superconducting composites, including assembly, welding, isostatic compaction, extrusion, wire drawing, twisting, and final sizing. The article also provides a detailed account of the properties and applications of NbTi superconducting composites.
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in High-Strength Structural and High-Strength Low-Alloy Steels
> Properties and Selection: Irons, Steels, and High-Performance Alloys
Published: 01 January 1990
Fig. 12 Effect of niobium carbide on yield strength for various sizes of niobium carbide particles
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Published: 01 January 2005
Fig. 6 Solubility of oxygen in niobium and tantalum. Curve A, niobium; curve B, tantalum. Source: Ref 18
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Published: 01 January 2005
Fig. 7 Solubility of nitrogen in niobium and tantalum. Curve A, niobium; curve B, tantalum. Source: Ref 18
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Published: 01 January 1986
Fig. 29 Topographs showing equi-inclination contours in a niobium crystal containing β-niobium hydride precipitates. Plate 0 is a multiple exposure. Plates 1 to 16 are single exposures taken 140 arc minutes of rotation about the [110] direction. OM is an optical micrograph showing hydride
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Published: 01 January 1986
Fig. 7 Schulz x-ray topograph of a niobium single crystal revealing its intrinsic microstructure. 8×. Source: Ref 13
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Published: 01 January 1994
Fig. 9 High-resolution Rutherford backscattering spectroscopy of a 10.4 nm niobium layer on sapphire (calculated solid lines) that was oxidized in air (shoulder in the experimental points distribution). 1 MeV 4 He + . Source: Ref 34
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Published: 01 June 2016
Fig. 8 Titanium-niobium phase diagram. This beta-stabilized system is typical of the beta-isomorphous type. Both titanium and niobium have body-centered cubic crystal structures. Source: Ref 1
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in Refractory Metals and Alloys
> Properties and Selection: Nonferrous Alloys and Special-Purpose Materials
Published: 01 January 1990
Fig. 6 Particle shape of niobium powder made by electron beam melting, hydriding, crushing, and degassing. 250×
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in Refractory Metals and Alloys
> Properties and Selection: Nonferrous Alloys and Special-Purpose Materials
Published: 01 January 1990
Fig. 7 Effect of temperature on the mechanical properties of three niobium alloys coated with Si-20Cr-20Fe silicide coating. (a) Tensile yield strength and specific strength. (b) Stress. Specific strength is the ratio of tensile yield strength ( F ty ) (in lb/in. 2 ) to mass density (ρ
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in Refractory Metals and Alloys
> Properties and Selection: Nonferrous Alloys and Special-Purpose Materials
Published: 01 January 1990
Fig. 8 Cyclic creep in three niobium alloys coated with Si-20Cr-20Fe silicide coating
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in Refractory Metals and Alloys
> Properties and Selection: Nonferrous Alloys and Special-Purpose Materials
Published: 01 January 1990
Fig. 9 Effect of temperature on the elastic properties of three niobium alloys coated with Si-20Cr-20Fe silicide coating. (a)Modulus of elasticity. (b)Specific modulus. Specific modulus is the ratio of the modulus of elasticity ( E ) (in lb/in. 2 ) to mass density (ρ) (in lb/in. 3 ); it has
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in High-Strength Low-Alloy Steel Forgings
> Properties and Selection: Irons, Steels, and High-Performance Alloys
Published: 01 January 1990
Fig. 2 Precipitation and dissolution characteristics of vanadium and niobium carbides in austenite
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Published: 31 October 2011
Fig. 28 Example of microsegregation in a weld of a niobium-bearing nickel-base superalloy. (a) Micrograph showing position of composition trace. (b) Corresponding electron probe microanalysis results showing niobium microsegregation. Source: Ref 33 , 42
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Published: 01 January 2005
Fig. 1 Potential-pH equilibrium diagram for niobium-water at 25 °C (75 °F)
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Published: 01 January 2005
Fig. 3 Isocorrosion curves of niobium alloys in hydrochloric acid, 0.05 mm/yr (2 mils/yr) lines
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Published: 01 January 2005
Fig. 4 Potentiodynamic scan results of niobium and Nb-1Zr in 20% HCl at 100 °C (212 °F) with ferric ion. Saturated calomel electrode with scan rate of 0.3 mV/s
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