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John A. Shields, Jr., Kurt D. Moser, R. William Buckman, Jr., Todd Leonhardt, C. Craig Wojcik
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James R. Ciulik, John A. Shields, Jr., Prabhat Kumar, Todd Leonhardt, John L. Johnson
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tantalum alloys
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Book Chapter
Book: Corrosion: Materials
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003825
EISBN: 978-1-62708-183-2
... the corrosion resistance of different types of tantalum-base alloys. cathodic protection corrosion resistance hydrogen embrittlement tantalum tantalum alloys TANTALUM is one of the most versatile corrosion-resistant metals known. It combines the inertness of glass with the strength and ductility...
Abstract
Tantalum is one of the most versatile corrosion-resistant metals known. The outstanding corrosion resistance and inertness of tantalum are attributed to a very thin, impervious, protective oxide film that forms on exposure of the metal to slightly anodic or oxidizing conditions. This article provides a discussion on the mechanism of corrosion resistance and on the behavior of tantalum in different corrosive environments, namely, acids; salts; organic compounds; reagents, foods, and pharmaceuticals; body fluids and tissues; and gases. It contains several tables that summarize the effects of acids, salts, and miscellaneous corrosive reagents on tantalum and applications for tantalum equipment in chemical, pharmaceutical, and other industries. Finally, the article presents a discussion on hydrogen embrittlement, the galvanic effects, and cathodic protection of tantalum and describes the corrosion resistance of different types of tantalum-base alloys.
Image
Published: 01 January 2005
Fig. 6 Sputter-deposited chromium-niobium and chromium-tantalum alloys. (a) Corrosion rates of alloys compared to pure chromium, niobium, and tantalum. (b) Polarization curves of sputter-deposited chromium-niobium alloys and pure chromium and niobium. The number corresponds to the atomic
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Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001430
EISBN: 978-1-62708-173-3
... Abstract This article discusses the weldability characteristics of cobalt-base corrosion-resistant (CR) alloys, titanium-base CR alloys, zirconium-base CR alloys, and tantalum-base CR alloys that assist in the selection of suitable alloy and welding method for producing high-quality welds...
Image
Published: 01 January 2005
Fig. 9 Corrosion rate versus tungsten content for tantalum-tungsten alloys exposed to concentrated H 2 SO 4 at 180 and 210 °C (360 and 410 °F)
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Book Chapter
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003994
EISBN: 978-1-62708-185-6
... Abstract This article focuses on the forging characteristics of different types of refractory metals and alloys, namely, niobium and niobium alloys, molybdenum and molybdenum alloys, tantalum and tantalum alloys, and tungsten and tungsten alloys. forging molybdenum molybdenum alloys...
Image
Published: 01 January 2005
Fig. 10 Influence of alloying elements on the corrosion rate of binary tantalum alloys exposed 3 days to 95% H 2 SO 4 at 250 °C (480 °F). Source: Ref 37
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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.a0003826
EISBN: 978-1-62708-183-2
... such as hafnium-zirconium alloys and hafnium-tantalum alloys. It also deals with the applications of hafnium and its alloys in the nuclear and chemical industries. aqueous corrosion testing chemical properties corrosion corrosion resistance crevice corrosion galvanic corrosion hafnium hafnium alloys...
Abstract
This article describes the processes involved in the production of hafnium and its alloys. It discusses the physical, mechanical and chemical properties of hafnium. The aqueous corrosion testing of hafnium and its alloys is detailed. The article reviews the corrosion resistance of hafnium in specific media, namely, water, steam, hydrochloric acid, nitric acid, sulfuric acid, alkalis, organics, molten metals, and gases. Forms of corrosion, namely, galvanic corrosion, crevice corrosion, and pitting corrosion are included. The article explains the corrosion of hafnium alloys such as hafnium-zirconium alloys and hafnium-tantalum alloys. It also deals with the applications of hafnium and its alloys in the nuclear and chemical 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.a0006209
EISBN: 978-1-62708-163-4
... Abstract This article is a compilation of binary alloy phase diagrams for which tantalum (Ta) 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 tantalum (Ta) 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: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001426
EISBN: 978-1-62708-173-3
..., including tantalum, niobium, rhenium, molybdenum, and tungsten. Refractory metal alloys are discussed in the order of decreasing weldability: tantalum, niobium, rhenium, molybdenum, and tungsten. microstructure molybdenum niobium refractory metals rhenium tantalum tungsten weldability welding...
Abstract
This article discusses special metallurgical considerations during the fusion welding of refractory metal alloys. These considerations are: microstructure, interstitial impurities, and welding conditions that are considered during the fusion welding of refractory metal alloys, including tantalum, niobium, rhenium, molybdenum, and tungsten. Refractory metal alloys are discussed in the order of decreasing weldability: tantalum, niobium, rhenium, molybdenum, and tungsten.
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005167
EISBN: 978-1-62708-186-3
... Abstract This article describes the formability and surface contamination of the refractory metals such as niobium, tantalum, molybdenum, tungsten, and titanium-zirconium-molybdenum alloys. It reviews the factors that affect mechanical properties and formability during rolling and heat...
Abstract
This article describes the formability and surface contamination of the refractory metals such as niobium, tantalum, molybdenum, tungsten, and titanium-zirconium-molybdenum alloys. It reviews the factors that affect mechanical properties and formability during rolling and heat treatment. The effect of temperature on the formability of refractory metals is discussed. The article provides a description of the forming methods of sheet and preformed blanks using refractory metals. It also discusses the types of lubricants, including oils, soaps, waxes, silicones, graphite, and molybdenum disulphide, used in the forming of refractory metals.
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002190
EISBN: 978-1-62708-188-7
...). Accordingly, tool wear is more rapid and tool life is shorter than when machining carbon or alloy steel with similar tools. For machining niobium and tantalum, high-speed steel tools can be used in all operations. However, carbide tools are frequently used, especially for single-point cutting and face...
Abstract
This article describes various machining techniques of refractory metals, namely, niobium, molybdenum, tantalum, and tungsten. These include turning, boring, trepanning, reaming, milling, tapping, drilling, and sawing. Parameters for the machining of the refractory metals are also tabulated. In addition, the article provides information on cutting fluids and tools that are used in machining of the refractory metals as well as on the safety precautions to be followed in the machining process.
Image
Published: 01 January 1989
Fig. 5 Tool geometry of high-speed steel (170 to 290 HB) taps for niobium, molybdenum, and tantalum alloys. A two-flute spiral-point tap is used for a through hole, and a four-flute hand tap is used for a blind hole. Special taps for these alloys are also available.
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Image
in Special Metallurgical Welding Considerations for Refractory Metals
> Welding, Brazing, and Soldering
Published: 01 January 1993
Fig. 1 Elevated-temperature tensile strength of annealed base metal and tantalum alloy arc welds. Source: Ref 3
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Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006255
EISBN: 978-1-62708-169-6
... Abstract This article briefly discusses the annealing practices for refractory metals such as tungsten, molybdenum, niobium, tantalum, and rhenium and their alloys. It also presents the applications and properties of these metals and their alloys. annealing microstructure molybdenum...
Image
Published: 01 January 1989
Fig. 2 Tool geometry for general-purpose high-speed steel twist drill for tungsten alloys (290 to 320 HB) and niobium, molybdenum, and tantalum alloys (170 to 290 HB) Lip relief angle, degrees Drill size 20 No. 80-No. 61 18 No. 60-No. 41 16 No. 41-No. 31 14 3.2–6.4 mm
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Image
Published: 01 January 1997
Fig. 25 Schematic curves depicting the forgeability of single-phase and two-phase alloys as a function of temperature. (a) Curve 1: pure metals and single-phase alloys (aluminum alloys, tantalum alloys, niobium alloys). Curve 2: pure metals and single-phase alloys exhibiting rapid grain growth
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Image
Published: 01 January 1989
Niobium, molybdenum, and tantalum alloys 170–290 0 20 5 5 0 20 7 … … 5 Tungsten alloys 180–320 … … … … −15 0 7 … … …
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Image
Published: 01 January 1989
Tantalum alloys, wrought, cast, P/M 200–250 0 20 5–7 0–5 0 0 45 5–10 10 10 Tungsten alloys, wrought, cast, P/M 180–320 … … −4 to −8 −3 to −11 −15 0 45 5–10 15 15
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Book Chapter
Book: Powder Metallurgy
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006123
EISBN: 978-1-62708-175-7
... Abstract This article focuses on the selection, properties, and applications of powder metallurgy refractory metals and their alloys, including tungsten, molybdenum, tantalum, niobium, and rhenium. molybdenum niobium powder metallurgy refractory metals rhenium tantalum tungsten...
Book Chapter
Book: Alloy Phase Diagrams
Series: ASM Handbook
Volume: 3
Publisher: ASM International
Published: 27 April 2016
DOI: 10.31399/asm.hb.v03.a0006199
EISBN: 978-1-62708-163-4
...) Binary Alloy Phase Diagrams .” “Pt-Rh (Platinum - Rhodium)” in the article “Pt (Platinum) Binary Alloy Phase Diagrams .” Rh-Se (Rhodium-Selenium) Rh-Se crystallographic data Rh-Ta (Rhodium-Tantalum) Rh-Ta crystallographic data Rh-Ti (Rhodium-Titanium...
Abstract
This article is a compilation of binary alloy phase diagrams for which rhodium (Rh) 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.
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