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hafnium alloys

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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
... 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...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003149
EISBN: 978-1-62708-199-3
... Abstract This article discusses the general characteristics, primary and secondary fabrication methods, product forms, and corrosion resistance of zirconium and hafnium. It describes the physical metallurgy of zirconium and its alloys, providing details on allotropic transformation and...
Series: ASM Handbook
Volume: 3
Publisher: ASM International
Published: 27 April 2016
DOI: 10.31399/asm.hb.v03.a0006167
EISBN: 978-1-62708-163-4
... Abstract This article is a compilation of binary alloy phase diagrams for which hafnium (Hf) 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...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001312
EISBN: 978-1-62708-170-2
... usual bath for zirconium, Zircaloys, and hafnium is composed of 25 to 50% nitric acid, 70 vol%; 2 to 5% hydrofluoric acid, 49 vol%; and the remainder water. The acid bath for zirconium-niobium alloys consists of 28 to 32% sulfuric acid, specific gravity 1.84; 28 to 32% nitric acid; 5 to 10% hydrofluoric...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003221
EISBN: 978-1-62708-199-3
... Abstract This article discusses surface engineering of nonferrous metals including aluminum and aluminum alloys, copper and copper alloys, magnesium alloys, nickel and nickel alloys, titanium and titanium alloys, zirconium and hafnium, zinc alloys, and refractory metals and alloys. It describes...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003151
EISBN: 978-1-62708-199-3
... substrates include alloys Cb-752, C-129Y, and FS-85. Other variants contain hafnium silicide, which gives the final coating a higher remelt temperature. Methods for applying the slurry include dipping, spraying, and touch-up painting. Following application of approximately 0.08 mm (0.003 in.) of slurry per...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003823
EISBN: 978-1-62708-183-2
... process continues to be a method for purifying titanium, zirconium, and hafnium, even though it is slow and expensive. In the 1940s, several groups of scientists and engineers were investigating zirconium and other metals and alloys for nuclear reactors. A suitable structural material with good...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006253
EISBN: 978-1-62708-169-6
... Zirconium Cobalt Hafnium Nickel Tin Uranium Hydrogen Silicon Source: Revised from Ref 1 . Tungsten is isomorphous per Ref 4 Fig. 3 Titanium-aluminum phase diagram. Source: Ref 4 At higher levels of aluminum content, there exists an intermediate, ordered phase...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0006543
EISBN: 978-1-62708-183-2
... 0.260 Cobalt … 8.85 0.322 Gallium … 5.907 0.213 Germanium … 5.323 0.192 Hafnium … 13.1 0.473 Indium … 7.31 0.264 Iridium … 22.5 0.813 Lithium … 0.534 0.019 Manganese … 7.43 0.270 Mercury … 13.546 0.489 Molybdenum … 10.22 0.369 Niobium...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005442
EISBN: 978-1-62708-196-2
... Cesium 1.903 0.069 Chromium 7.19 0.260 Cobalt 8.85 0.322 Gallium 5.907 0.213 Germanium 5.323 0.192 Hafnium 13.1 0.473 Indium 7.31 0.264 Iridium 22.5 0.813 Lithium 0.534 0.019 Manganese 7.43 0.270 Mercury 13.546 0.489 Molybdenum 10.22 0.369...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006266
EISBN: 978-1-62708-169-6
... alloy to be used for aircraft gas turbine application; better ductility was required. To increase the 760 °C (1400 °F) elongation, several changes were suggested. Among them was improved foundry practice, which did show promise. However, the change actually adopted was the addition of hafnium to...
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
... versus tungsten content for tantalum-tungsten alloys exposed to concentrated H 2 SO 4 at 180 and 210 °C (360 and 410 °F) The corrosion behavior of substitutional tantalum-molybdenum, tantalum-tungsten, tantalum-niobium, tantalum-hafnium, tantalum-zirconium, tantalum-rhenium, tantalum-nickel...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001313
EISBN: 978-1-62708-170-2
... fused-silicide coating system, particularly Si-20Ti-10Mo, appears practical for coating large, complex aerospace sheet metal components. A duplex coating consisting of a sintered hafnium boride-molybdenum silicide layer overlaid with a hafnium-tantalum slurry is serviceable at 1820 to 1870 °C (3310...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003140
EISBN: 978-1-62708-199-3
... processing, heat treatment, or service at elevated temperature. Zirconium and hafnium are unique in that they are isomorphous with both the α and β phases of titanium. Tin and aluminum have significant solubility in both α and β phases. Aluminum increases the transformation temperature significantly...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003082
EISBN: 978-1-62708-199-3
... 0.239 Beryllium 1.848 0.067 Bismuth 9.80 0.354 Cadmium 8.65 0.313 Calcium 1.55 0.056 Cesium 1.903 0.069 Chromium 7.19 0.260 Cobalt 8.85 0.322 Gallium 5.907 0.213 Germanium 5.323 0.192 Hafnium 13.1 0.473 Indium 7.31 0.264 Iridium 22.5 0.813...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006261
EISBN: 978-1-62708-169-6
... in nickel to form various types of carbides. Carbon in amounts of approximately 0.02 to 0.2 wt% combines with reactive elements, such as titanium, tantalum, hafnium, and niobium. The carbides most frequently found in nickel-base alloys are MC, M 6 C, M 7 C 3 , and M 23 C 6 (where “M” is the metallic...
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
... on the ordered B 2, Nb 5 Si 3 , and Nb 3 Al phases. Jackson and coworkers ( Ref 22 , 23 ) have investigated a series of ordered and disordered beta alloys in the composition rage Nb-(35–60)Ti-(7–15)Al (at.%). Later alloys in this class also contained chromium or hafnium additions to obtain improved...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005658
EISBN: 978-1-62708-198-6
... oxygen content of the alloy, both of which form titanium-rich compounds, preferentially removing titanium from the NiTi compound matrix. Third-element additions such as chromium, iron, aluminum, and cobalt strongly suppress transformation temperatures, and additions of tantalum, hafnium, palladium, and...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006274
EISBN: 978-1-62708-169-6
... alloys. The general purposes of various alloying elements are summarized in Table 4 . Nickel alloys can be complex, sometimes containing more than ten different alloying constituents. For example, various combinations of carbon, boron, zirconium, hafnium, cobalt, chromium, aluminum, titanium, vanadium...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006250
EISBN: 978-1-62708-169-6
... growth. The article also describes the various types of solid-state transformations such as isothermal transformation and athermal transformation, resulting from the heat treatment of nonferrous alloys. It provides information on the homogenization of chemical composition within a cast structure...