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nickel aluminides

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Published: 01 January 2006
Fig. 10 Micrograph of a nickel-aluminide coating. As-polished More
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Published: 01 December 1998
Fig. 9 Crack growth rates of nickel aluminide (Ni-23.5Al-0.5Hf-0.1B, at.%), LRO alloys [(Fe,Ni) 3 (V,Ti)], and several high-temperature alloys tested in air at 25 °C (80 °F) More
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Published: 01 January 2005
Fig. 26 Corrosion-mode diagram for nickel aluminide (Ni 3 Al) in aqueous solutions, as estimated from electrochemical experiments More
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Published: 01 January 1990
Fig. 10 Crack growth rates of nickel aluminide (Ni-23.5Al-0.5Hf-0.1B, at.%), LRO alloys [(Fe, Ni) 3 (V,Ti)], and several high-temperature alloys tested in air at 25 °C (80 °F). Source: Ref 87 More
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Published: 01 December 2004
Fig. 32 Field metallography of a nickel aluminide austenitizing furnace roll. (a) and (b) Gold-enhanced replicas representing the microstructure of a nickel aluminide austenitizing furnace roll. The dendritic microstructure consists of primary dendrite arm of nickel aluminide with small More
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Published: 01 December 1998
Fig. 2 Crystal structures of nickel, iron, and titanium aluminides More
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Published: 01 January 1990
Fig. 3 Crystal structures of nickel, iron, and titanium aluminides More
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003164
EISBN: 978-1-62708-199-3
... melting points, and good high-temperature strength that make them an attractive material for high-temperature structural application. This article discusses the properties, chemical composition, corrosion resistance, processing, fabrication, alloying effects and crystallographic data of nickel aluminides...
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Published: 01 January 2005
Fig. 23 Comparison of the current density produced by dissolution of nickel and nickel aluminide in deaerated sulfuric acid. SCE, saturated calomel electrode More
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Published: 01 January 2005
Fig. 24 Potential transients during and following the generation of fresh bare surface by scratching of nickel, aluminum, and nickel aluminide in 0.5 mol/L NaCl, with the hydrogen evolution potential for this environment indicated SCE, saturated calomel electrode More
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Published: 01 January 2003
Fig. 21 Effects of fuel carbon residue (10% bottoms) on type II hot corrosion of nickel aluminide high-temperature coatings. Source: Ref 135 More
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Published: 01 December 1998
Fig. 5 Variation of yield strength with test temperature for selected nickel aluminide alloys. Strain rate, 0.5 mm/mm per min. See Table 3 for alloy compositions. More
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Published: 01 January 1994
Fig. 3 Archetypical microstructures of aluminide coatings on a nickel superalloy. (a) Inward diffusion based on Ni 2 Al 3 (and aluminum-rich NiAl). (b) Same as (a) but heat treated at 1080 °C (1975 °F). (c) Outward diffusion of nickel in nickel-rich NiAl. (d) Inward diffusion of aluminum More
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003837
EISBN: 978-1-62708-183-2
... nickel-rich and aluminum-rich sides of Ni 3 Al. This is quite different from B2-NiAl, where antisite defects are stable in the nickel-rich side and vacancies are formed in the aluminum-rich side. Oxidation In the oxidation of nickel aluminides, Al 2 O 3 grows in different modifications, depending...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001102
EISBN: 978-1-62708-162-7
... and metallurgical properties, material processing and fabrication, structural applications, mechanical behavior, environmental embrittlement, alloying effects, and crystal structure of aluminides of nickel, iron, titanium, and silicides. It describes the cleavage and intergranular fracture in trialuminides...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004158
EISBN: 978-1-62708-184-9
... in the coating. If there is free sulfur in the coating, it migrates to the oxide-coating interface, weakening this interface, and increasing the amount of oxide spalling. Diffusion aluminide coatings are nickel aluminide (NiAl) and cobalt aluminide (CoAl). NiAl forms on nickel-base superalloys and CoAl forms...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004001
EISBN: 978-1-62708-185-6
... of manufacturing methods in the context of processing-cost trade-offs for gamma titanium aluminide alloys are also discussed. Iron-, Nickel-, Niobium-, and Molybdenum-Base Intermetallic Alloys This section reviews the status of the bulk forming of some of the more common aluminide and silicide systems...
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Published: 01 January 2005
Fig. 22 Electrochemical equilibrium diagram for nickel and aluminum showing the influence of L1 2 ordering (Ni 3 Al) on nickel and aluminum dissolution and passivation reactions. The potential ranges for the aluminide correspond to the aluminum concentration range from 0.2 to 0.3 mol fraction More
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003555
EISBN: 978-1-62708-180-1
... and metal dusting, sulfidation, hot corrosion, chloridation, hydrogen interactions, molten metals, molten salts, and aging reactions including sensitization, stress-corrosion cracking, and corrosion fatigue. It concludes with a discussion on various protective coatings, such as aluminide coatings, overlay...
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Published: 01 August 2013
Fig. 5 Micrograph of a typical two-phase NiCoCrAlY low-pressure plasma-sprayed coating after several hours of service. The dark aluminide phase is depleted near the coating surface as the aluminum is consumed to form the thermally grown oxide alumina scale visible under the nickel plating used More