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Ammonia

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090043
EISBN: 978-1-62708-266-2
...Abstract Abstract This chapter addresses the issue of stress-corrosion cracking (SCC) in carbon and low-alloy steels. It discusses crack initiation, propagation, and fracture in aqueous chloride, hydrogen sulfide, sulfuric acid, hydroxide, ammonia, nitrate, ethanol, methanol, and hydrogen gas...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.htcma.t52080067
EISBN: 978-1-62708-304-1
.... It provides images and data describing the nitridation process and its effects on metals and alloys in high-temperature air as well as NH3-H2O, NH3 and H2-N2-NH3, and N2 environments. It also includes test data showing that nitridation is more severe in a nitrogen atmosphere than an ammonia environment...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090221
EISBN: 978-1-62708-266-2
... to the practice of storing the cartridge cases in horse barns, where they came in contact with ammonia vapors. A further contributing factor was the cold forming operation used to make the cases, which introduced high residual tensile stresses. Sperry ( Ref 7.1 ) provides further discussion of these early SCC...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2007
DOI: 10.31399/asm.tb.pmsspmp.t52000059
EISBN: 978-1-62708-312-6
... was observed in all boron-containing samples. Reprinted with permission from MPIF, Metal Powder Industries Federation, Princeton, NJ Fig. 5.42 Auger composition-depth profile of 316L part sintered in dissociated ammonia at 1177 °C (2151 °F). Dewpoint –40 °C (–40 ° F). Source: Ref 16 . Reprinted...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440141
EISBN: 978-1-62708-262-4
... are low enough and capable of holding very uniform temperatures to maintain steels in the ferritic condition. The atmosphere employed consists of ammonia diluted with a carrier gas. In one process, the atmosphere is formed from equal amounts of ammonia and endothermic gas. In another process, a typical...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2007
DOI: 10.31399/asm.tb.pmsspmp.t52000167
EISBN: 978-1-62708-312-6
... was 192. DA, dissociated ammonia. Source: Ref 10 Examples of filler metals Table 10.4 Examples of filler metals Alloy Condition (a) Filler metal 303 1 or 3 312 304 1 308 304L 1 347, 308L 316 1 or 2 316 316L 1 or 3 316Nb, 316L, 318 317L 1 or 3 317Nb 409...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2007
DOI: 10.31399/asm.tb.pmsspmp.t52000101
EISBN: 978-1-62708-312-6
... and suffer from intergranular corrosion. When sintering in a nitrogen-containing atmosphere, the cooling rate must be high enough to prevent sensitization and intergranular corrosion due to the precipitation of Cr 2 N during cooling. Sintering in dissociated ammonia requires cooling rates from 200 ºC/min...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030209
EISBN: 978-1-62708-282-2
... , October 2000 • Schutt H.U. and Rhodes P.R. , “ Corrosion in the Aqueous Hydrogen Sulfide, Ammonia, Oxygen System ,” Paper 331, presented at Corrosion/95 , NACE International, 1995 • Tebbal S. , Kane R.D. , and Yamada K. , Assessment of the Corrosivity of Crude...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.smnm.t52140189
EISBN: 978-1-62708-264-8
... COCH 3 ) into the furnace, a process called Carbomag or sometimes drip feed ( Ref 17.9 ). These processes claim energy savings over endo gas of 10 to 20%. This process is very similar to the standard carburizing process. One simply adds approximately 3 to 8% ammonia (NH 3 ) to the hydrocarbon gas...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430379
EISBN: 978-1-62708-253-2
... Suspended Solids 7.2.2 Total Dissolved Solids 7.2.3 Iron 7.2.4 Silica 7.2.5 Scale Deposits 7.2.6 Sodium 7.2.7 Dissolved Oxygen 7.2.8 Dissolved Carbon Dioxide 7.2.9 Ammonia 7.2.10 Organic Matter 7.2.11 Oil and Grease 7.2.12 pH 7.2.13 Alkalinity 7.2.14 Hardness 7.4.1...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170457
EISBN: 978-1-62708-297-6
... stress-corrosion cracking Alloy Environment Pure copper Ammonia Sodium nitrite DHP copper Sodium nitrite OFHC copper Sodium nitrite Cu-Zn alloys Ammonia Cu-10Mn Mattsson’s solution Cu-5Zn-5Mn Mattsson’s solution Cu-5Zn-10Mn Mattsson’s solution Cu-20Zn-5Ni...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440055
EISBN: 978-1-62708-262-4
...) Nitrogen base Vacuum Dissociated ammonia Dry hydrogen (dried bottled gas) Argon (from bottles) Discussion of furnace atmospheres can be extensive and complex. Therefore, at the risk of some oversimplification, an attempt is made subsequently to briefly describe the types of atmospheres...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2007
DOI: 10.31399/asm.tb.pmsspmp.t52000221
EISBN: 978-1-62708-312-6
... elongation. Sintered at 1288 °C (2350 °F) in dissociated ammonia. L: Low carbon. Lower strength, highest elongation. Sintered at 1288 °C (2350 °F) in partial vacuum. Cooled to avoid nitrogen absorption. HT: Martensitic grade, heat treated. Highest strength. Sinter hardened at 1149 °C (2100 °F) in dissociated...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090419
EISBN: 978-1-62708-266-2
... layer (nitrate, hydroxide, and carbonate) are susceptible to intergranular SCC (IGSCC), while those environments leading to the formation of a thin film such as liquid ammonia result in transgranular cracks ( Ref 18.17 ). Nevertheless, the relationship between the environment, material, and the SCC...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2007
DOI: 10.31399/asm.tb.pmsspmp.t52000219
EISBN: 978-1-62708-312-6
.... Good strength, low elongation. Sintered at 1149 °C (2100 °F) in dissociated ammonia. N2: Nitrogen alloyed. High strength, medium elongation. Sintered at 1288 °C (2350 °F) in dissociated ammonia. L: Low carbon. Lower strength, highest elongation. Sintered at 1288 °C (2350 °F) in partial vacuum. Cooled...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030292
EISBN: 978-1-62708-282-2
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2007
DOI: 10.31399/asm.tb.pmsspmp.t52000109
EISBN: 978-1-62708-312-6
... ammonia Mechanical properties of powder metallurgy martensitic alloys in the heat-treated condition Table 7.6 Mechanical properties of powder metallurgy martensitic alloys in the heat-treated condition Base alloy C addition Sintering temperature Sintered density, g/cm 3 Sintering...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240395
EISBN: 978-1-62708-251-8
... are proprietary processes Ion 345–565 650–1050 75–760 3–30 50–70 Alloy steels, nitriding steels, stainless steels Faster than gas nitriding; no white layer; high equipment costs; close case control Nitriding is conducted in atmospheres that decompose ammonia to provide nitrogen to the surface...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2007
DOI: 10.31399/asm.tb.pmsspmp.t52000147
EISBN: 978-1-62708-312-6
...: NSS, neutral salt spray test ASTM B 117; ISO 4540–1980(E). (b) A, time in h until appearance of first stain or rust spot: B, time in h until 1% of surface of specimen is covered with stain or rust. (c) H 2 , hydrogen: DA, dissociated ammonia; V, vacuum. (d) L, laboratory; I, industrial...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230107
EISBN: 978-1-62708-298-3
.... colorimetric methods fluorometric methods gravimetric methods polarographic methods radiometric methods spectrometric methods volumetric methods BERYLLIUM belongs to the ammonium hydroxide analytical group. Beryllium is completely precipitated by ammonia, along with iron, aluminum, and chromium...