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hydride formation

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030148
EISBN: 978-1-62708-282-2
... damage, and reviews hydrogen degradation in specific ferrous and nonferrous alloys. The preeminent theories for hydrogen damage are based on pressure, surface adsorption, decohesion, enhanced plastic flow, hydrogen attack, and hydride formation. The specific alloys covered are iron-base, nickel, aluminum...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910099
EISBN: 978-1-62708-250-1
... hydrogen embrittlement, hydrogen-induced blistering, high-temperature hydrogen attack, and hydride formation). All these forms are addressed in this chapter in the context of aqueous corrosion. For each form, a general description is provided along with information on the causes and the list of metals...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120123
EISBN: 978-1-62708-269-3
.... (Note that under strongly reducing, or cathodic, conditions, undesirable titanium hydride formation is predicted.) Fig. 13.2 Pourbaix diagram for titanium-water system showing areas of passivity and corrosion General corrosion is characterized by a relatively uniform attack over...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.cw.t51820143
EISBN: 978-1-62708-339-3
..., whereas oxide film breakdown and the resultant corrosion of titanium occur under reducing acidic conditions. Under strongly reducing (cathodic) conditions, titanium hydride formation is predicted. Fig. 6 Potential-pH diagram for titanium Thus, successful use of titanium alloys can...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2001
DOI: 10.31399/asm.tb.secwr.t68350011
EISBN: 978-1-62708-315-7
... sensitization and exfoliation Dealloying Environmentally assisted cracking, including stress-corrosion cracking (SCC), corrosion fatigue, and hydrogen damage (including hydrogen embrittlement, hydrogen-induced blistering, high-temperature hydrogen attack, and hydride formation) Figure 3...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090303
EISBN: 978-1-62708-266-2
... to be necessary for cracking to occur. The formation of zirconium hydrides resulting from hydrogen charging in HCl did not cause brittle failure ( Ref 11.5 ). The addition of hydrogen poisoners, such as sulfide and gallium ions, does not increase the susceptibility of zirconium to brittle failure ( Ref...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230117
EISBN: 978-1-62708-298-3
... Abstract This chapter discusses the synthesis of important beryllium compounds, including beryllium borides, beryllium carbide, beryllium carbonates, beryllium carboxylates, beryllium halides, beryllium hydride, beryllium hydroxide, beryllium nitrate, beryllium nitride, beryllium oxalate...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280203
EISBN: 978-1-62708-267-9
... strong at high temperatures but also are extremely oxidation resistant. The oxidation resistance is created by the formation of a layer of protective oxides of Cr 2 O 3 and Al 2 O 3 . Oxides are sometimes called scales, even when they are relatively thin and protective in nature. However, scales...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030003
EISBN: 978-1-62708-282-2
... theories that are specific to the behavior of certain alloy systems or environments exist, none is universal enough to explain, for example, the diverse behavior of hydrogen damage for systems that develop hydrides versus alloys of iron that do not form hydrides. There are many of these contradictory...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230131
EISBN: 978-1-62708-298-3
.... , Maeland A.J. , Conradi M.S. , and McDowell A.F. , 1998 . NMR Studies of Hydrogen Diffusion in ZrBe2H1.4 , J. Alloy. Compd. , Vol 264 ( No. 1–2 ), p 63 – 70 10.1016/S0925-8388(97)00273-9 Maeland A.J. , and Libowitz G.G. , 1983 . Hydrides of Beryllium-Based...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.9781627082501
EISBN: 978-1-62708-250-1
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120095
EISBN: 978-1-62708-269-3
... titanium Because the phenomenon depends on both hydrogen diffusion and hydride formation, there may be a peak in hydrogen embrittlement as a function of temperature. The exact level of hydrogen at which a separate hydride phase is formed depends on the composition of the alloy and the previous...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480141
EISBN: 978-1-62708-318-8
... from an alpha treatment at a formation temperature (well below the alpha transus), which is a function of cooling rate and alloy composition. Typical cooling rates range 10 to 50 °C (18 to 90 °F) per minute. The near-lamellar (NL) microstructure is formed upon annealing at a temperature just below...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480331
EISBN: 978-1-62708-318-8
... are not conducive to the formation of the necessary protective oxide film on the metal surface. An introduction to metal corrosion should include a discussion about the thermodynamic nature of the metal. The easiest way to do this is to look at a potential-pH (also called Pourbaix) diagram of a metal ( Ref...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480051
EISBN: 978-1-62708-318-8
... the properties of titanium. This favorable alloying situation, in combination with the formation of two crystallographic structures, greatly enhances the usefulness of titanium. When the atomic diameters of alloying elements are less than 0.6 times the diameter of titanium, alloy elements can enter the metal...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030292
EISBN: 978-1-62708-282-2
... ). If hydrogen is present, temperatures should not exceed 175 °C (350 °F) in order to prevent embrittlement due to hydride formation. Hydrogen embrittlement of titanium can also occur as a result of a galvanic couple to a less noble material such as steel in elevated-temperature aqueous solution. Titanium...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240323
EISBN: 978-1-62708-251-8
... with time, the life of equipment can be predicted with reasonable accuracy. Uniform corrosion is uniform because it results from the formation and dissolution of multiple anodic and cathodic areas that move around the surface with time. Uniform corrosion is often caused by exposure to the atmosphere but can...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240597
EISBN: 978-1-62708-251-8
... mineral and organic acids, strong alkalis, saline solutions, and some molten salts. Zirconium is not attacked by oxidizing media unless halides are present. Like titanium, it is susceptible to the formation of embrittling hydrides when exposed to hydrogen at elevated temperatures. Hafnium, like...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030126
EISBN: 978-1-62708-282-2
... − solutions; organic liquids; I 2 at 350 °C (660 °F) In general, SCC is observed in alloy-environment combinations that result in the formation of a film on the metal surface. These films may be passivating layers, tarnish films, or dealloyed layers. In many cases, these films reduce the rate...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290009
EISBN: 978-1-62708-319-5
... , Boston, MA , 1998 • Mayo M.J. , Processing of Nanocrystalline Ceramics from Ultrafine Particles , Int. Mater. Rev. , Vol 41 , 1996 , p 85 – 115 10.1179/imr.1996.41.3.85 • McCracken C.G. and Barbis D.P. , Review of Current Hydride-Dehydride (HDH) Powder Production...