1-20 of 60 Search Results for

hafnium

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240597
EISBN: 978-1-62708-251-8
... Abstract This chapter discusses the compositions, properties, and applications of nonferrous metals, including zirconium, hafnium, beryllium, lead, tin, gold, silver, and platinum group metals. It also addresses fusible alloys and provides melting temperatures for several compositions...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1984
DOI: 10.31399/asm.tb.mpp.t67850509
EISBN: 978-1-62708-260-0
..., silicon, zirconium, and hafnium. macroetchants metals ...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.sap.t53000111
EISBN: 978-1-62708-313-3
... induction melting (VIM) must be used. Casting alloys generally require a high fluidity, which can be improved strongly through the addition of silicon (at the expense of ductility) and mildly by aluminum. One of the most common additives in a cast alloy is hafnium, which improves ductility, thus...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.sap.t53000059
EISBN: 978-1-62708-313-3
...′ lattice mismatch, γ′ volume fraction, diffusion rates, antiphase-boundary energy, and stacking fault energy. Surface stability improvement is achieved through the formation of a protective surface oxide scale composed largely of chromium and/or aluminum oxides. Reactive elements yttrium, cerium, hafnium...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170308
EISBN: 978-1-62708-297-6
... are Nb-1Zr and PWC-11 (Nb-1Zr-0.1C), used for containment of liquid alkali metals in space nuclear power systems. These alloys typically contain additions of zirconium or hafnium, which remove oxygen from solution in niobium by precipitation of ZrO 2 or HfO 2 . Moderate strength, fabricable alloys...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170290
EISBN: 978-1-62708-297-6
... superalloys during processing. The extent to which they directly contribute to strengthening depends on the alloy and its processing. In addition to those elements that produce solid-solution hardening and/or promote carbide and γ′ formation, other elements (e.g., boron, zirconium, and hafnium) are added...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240583
EISBN: 978-1-62708-251-8
... oxygen as internal oxide particles to promote better ductility. Before placing niobium products in service, they can be protectively coated with aluminide or silicide compounds, such as hafnium silicide or iron-chromium silicide applied as a mixture of Si-20Cr-20Fe. The properties of a number...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280211
EISBN: 978-1-62708-267-9
... and zirconium were thought to be beneficial in this respect as well. See “ Beneficial “Minor” Elements Boron, Zirconium, and Hafnium ” and “ Some Observations on Cobalt in Nickel-Base Superalloys ” later for more discussion of the effects of cobalt and of minor elements such as boron. An effect seen...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300445
EISBN: 978-1-62708-323-2
... Zinc Zn Germanium Ge Arsenic As Zirconium Zr Molybdenum Mo Rhodium Rh Silver Ag Cadmium Cd Indium In Tin Sn Antimony Sb Hafnium Hf Tantalum Ta Tungsten W Rhenium Re Osmium Os Iridium Ir Platinum Pt Gold Au Mercury Hg Lead...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060315
EISBN: 978-1-62708-261-7
...-point metals (bismuth, indium, lead, tin, zinc) Reactive metals (hafnium, titanium, and zirconium) Precious metals (gold, silver, platinum, palladium, iridium, rhodium, ruthenium, and osmium) Rare earth metals Semimetals (also known as metalloids) As this list indicates, some...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230145
EISBN: 978-1-62708-298-3
... of the Titanium-Beryllium, Zirconium-Beryllium and Hafnium-Beryllium Systems , CALPHAD , Vol 3 , Pergamon Press Ltd. , p 91 – 107 10.1016/0364-5916(79)90010-5 Peker A. , and Johnson W.L. , 1993 . A Highly Processable Metallic Glass: Zr 41.2 Ti 13.8 Cu 12.5 Ni 10.0 Be 22.5 , Appl. Phys...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280025
EISBN: 978-1-62708-267-9
... processing. In addition to those elements that produce solid-solution hardening and/or promote carbide and γ′ formation, other elements (e.g., boron, zirconium, and hafnium) are added to enhance mechanical or chemical properties. These minor elements are not customarily found in most cobalt-base alloys. Some...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480031
EISBN: 978-1-62708-318-8
... solid solubility ( Fig. 2.8 ). Nickel-copper and gold-silver are two binary alloy systems that show this complete solid solubility. Titanium exhibits unlimited solid solubility in beta phase (bcc structure) with hafnium (Hf), molybdenum (Mo), niobium (Nb), tantalum (Ta), vanadium (V), and zirconium (Zr...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480051
EISBN: 978-1-62708-318-8
... as neutral additions. Zirconium, tin, and hafnium are typical examples. Characteristics of neutral alloying additions include some depression of the beta transus temperature, substantial solubility in both alpha and beta phases, and alpha being present at room temperature over a wide range of conditions...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.sap.t53000025
EISBN: 978-1-62708-313-3
... ( Ref 26 ). In alloys containing hafnium, the formation of (yttrium, hafnium) oxides has been observed ( Ref 21 ). The formation of orthorhombic AlYO 3 (yttrium-aluminum perovskite) and tetragonal Y 3 Al 5 O 12 (yttrium-aluminum garnet) has been observed in the ferritic alloy MA-956 and is shown...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240135
EISBN: 978-1-62708-251-8
... the effect of the two strengthening mechanisms in MA 6000. At intermediate temperatures, approximately 815 °C (1500 °F), the strength of MA 6000 approaches that of the complex, highly alloyed DS MAR-M 200 containing hafnium and is almost four times that of an unalloyed ODS metal such as thoriated nickel (TD...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280287
EISBN: 978-1-62708-267-9
..., diffusion coatings and even overlay coatings are influenced by the alloy elements imported from the base superalloy. Favorable active element additions, such as hafnium, in the base superalloy can be incorporated in the coating and enhance performance. If that is the case, then the performance of a coating...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110279
EISBN: 978-1-62708-247-1
... circumvented the problem by introducing a dielectric layer with a high dielectric constant (K) to increase the effective oxide capacitance. The process is also known as the high-K process. Hafnium (HfO 2 ) based dielectric material was a popular choice starting 45nm process node. Hafnium has a dielectric...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060469
EISBN: 978-1-62708-261-7
... 0.033 0.0421 26 91.0 Gadolinium 1311 3273 7.898 0.02 0.055 4 131.0 Gallium 29.8 2205 (a) 5.904 0.098 (a) 0.089 18.3 13 (a) Germanium 937.4 2830 5.32 0.14 0.077 5.75 89,000 (a) (b) Gold 1064 2860 19.3 0.70 0.0308 14.1 2.3 Hafnium 2227 4602 13.31 0.05...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280079
EISBN: 978-1-62708-267-9
... additional problems to those normally encountered in superalloy casting. Increased tendencies for inclusions (owing to the use of hafnium to enhance transverse ductility), separately nucleated grains, grain misorientation, and the tendency for freckle grains (grain nucleation caused by inverse segregation...