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ammonia

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Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004185
EISBN: 978-1-62708-184-9
... Abstract Ammonia and ammonium hydroxide are not particularly corrosive in themselves, but corrosion problems can arise with specific materials, particularly when contaminants are present. This article discusses the corrosion resistance of materials used for the manufacture, handling, and...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005762
EISBN: 978-1-62708-165-8
... parts, quenching and tempering of carbonitrided steel parts, and applications of carbonitriding are also covered in the article. ammonia automotive gears carbonitriding case depth hardenability hardness hardness testing material selection pitting corrosion pitting resistance powder...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005983
EISBN: 978-1-62708-166-5
...-endothermic base; and Class 600, ammonia base. These are subclassified and numerically designated to indicate variations in the method by which they are prepared. The article also contains a table that lists significant furnace atmospheres and their typical applications. atmosphere furnaces carbon...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005926
EISBN: 978-1-62708-166-5
... Abstract This article provides a detailed discussion on the types of furnace atmospheres required for heat treating. These include generated exothermic-based atmospheres, generated endothermic-based atmospheres, generated exothermic-endothermic-based atmospheres, generated dissociated-ammonia...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006135
EISBN: 978-1-62708-175-7
... Table 1 Typical physical properties of various gaseous feed stocks at 20 °C (68 °F) and 1 atmosphere Property Natural gas (CH 4 ) Ammonia vapor (a) Air Propane gas Methanol vapor (a) Nitrogen gas Hydrogen gas Specific gravity (b) 0.59 0.60 1.00 1.55 1.11 0.97 0.07...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006111
EISBN: 978-1-62708-175-7
... (rolled) steel. Source: Ref 4 Fig. 4 Effect of combined carbon content on the transverse rupture strength of sintered steel. Test bars were pressed to density of 6.3 g/cm 3 , then sintered for 30 min at 1120 °C (2050 °F) in dissociated ammonia. Source: Ref 4 Fig. 6 Equilibrium...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001452
EISBN: 978-1-62708-173-3
... an emphasis on the selection of suitable filler metal, brazing processes, and its corresponding furnace atmosphere for brazing different grades of stainless steel. The types of brazing processes include torch brazing, furnace brazing in different atmospheres (dissociated ammonia, dry hydrogen, and...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006137
EISBN: 978-1-62708-175-7
... reducing, decarburizing, can hydride (Al, Ti) Carbon monoxide (CO) Yes Yes … Carburizing and mildly reducing Carbon dioxide (CO 2 ) … Yes Yes Oxidizing and decarburizing Hydrocarbons (C x H y ) Yes … Yes Strongly carburizing and deoxidizing Ammonia (NH 3 ) Yes Yes … Strongly...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005806
EISBN: 978-1-62708-165-8
..., it will tend to establish equilibrium between the chemical potentials of each species and their reaction products in the mixture. Ammonia is technically produced by combining nitrogen gas with hydrogen gas under conditions with high temperature (400 to 500 °C, or 750 to 930 °F) and high pressure...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006120
EISBN: 978-1-62708-175-7
... sintering practice, the properties achievable are shown as a function of sintered density. The four practices include: N1: Dissociated ammonia sintering at 1150 °C (2100 °F) N2: Dissociated ammonia sintering at 1290 °C (2350 °F) L: Vacuum (partial) sintering at 1290 °C. (Hydrogen sintering yields...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006118
EISBN: 978-1-62708-175-7
... steel muffles, and an atmosphere generated from decomposition of ammonia (dissociated ammonia). These furnaces permit the use of sintering temperatures in the range of 1120 to 1175 °C (2050 to 2150 °F). Austenitic grades of stainless steels processed via this type of sintering are still very much in use...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006635
EISBN: 978-1-62708-213-6
... alkynes only Sulfuric acid Positive for all alkynes Amides Basic (reflux) hydrolysis All amides yield ammonia or the corresponding amine detected by odor or by placing wet blue litmus paper on top of the condenser. Amines Diazotization All 1° amines give red azodyes with β-naphthol...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005848
EISBN: 978-1-62708-167-2
... in natural gas Ammonia 15.0–28 Yes Yes … Strongly nitriding Methanol 6.7–36 Yes Yes … Carbon monoxide and hydrogen generating (a) Capable of displacing oxygen in confined spaces leading to asphyxiation. Source: Ref 2 Table 7 Atmospheres for brazing—AWS designation...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001255
EISBN: 978-1-62708-170-2
... cyanide, g/L (oz/gal) 35 (4.7) 45 (6.0) Zinc cyanide, g/L (oz/gal) 10 (1.3) 7.5 (1.0) Sodium carbonate, g/L (oz/gal) 10 (1.3) 10 (1.3) Sodium bicarbonate, g/L (oz/gal) 7.5 (1.0) 7.5 (1.0) Ammonia (aqua), % 0.5 0.1 Analysis “Total” sodium cyanide, g/L (oz/gal) 22 (2.9) 33...
Series: ASM Handbook Archive
Volume: 10
Publisher: ASM International
Published: 01 January 1986
DOI: 10.31399/asm.hb.v10.a0001740
EISBN: 978-1-62708-178-8
... in which a second membrane barrier is included with an ion-selective electrode system to alter the selectivity properties of the sensor. Gas-sensing electrodes are available for ammonia, carbon dioxide, nitrogen oxide, and hydrogen disulfide (an amperometric gas sensor is available for oxygen...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003113
EISBN: 978-1-62708-199-3
..., Materials Standards for Metal Injection Molded Parts, 1993–1994 edition Table 1 Mechanical property and fatigue data for P/F-4600 materials Sintered at 1120 °C (2050 °F) in dissociated ammonia unless otherwise noted. Forging mode Carbon, % Oxygen, ppm Ultimate tensile strength 0.2...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003610
EISBN: 978-1-62708-182-5
.... Anhydrous liquid ammonia forms a true solution with the alkali metals and can be used to remove adherent alkali metals from corrosion specimens. Precautions against the hazards of liquid ammonia must be taken; the alkali metal in solution with ammonia is then usually reacted with water or alcohol before the...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003119
EISBN: 978-1-62708-199-3
... include dissociated ammonia (75 vol% H and 25 vol% N), H 2 -N 2 mixtures, and hydrogen, all with a low dew point (−40 to −55 °C, or −40 to −65 °F), and vacuum. Sintering temperatures range from 1120 to 1345 °C (2050 to 2450 °F)—higher sintering temperatures are used when improved mechanical properties...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003197
EISBN: 978-1-62708-199-3
... quenching from the bath. Carbon diffuses from the bath into the metal and produces a case comparable with one resulting from gas carburizing in an atmosphere containing some ammonia. However, because liquid carburizing involves faster heat-up (due to the superior heat-transfer characteristics of salt bath...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001319
EISBN: 978-1-62708-170-2
... Ammonia 0.200 400 3.0 Polyphenylenesulfide Epoxy Nitrous oxide 0.150 300 0.5 Polytetrafluoroethylene Epoxy Ammonia 0.100 550 1.5 Polyethylene Epoxy O 2 /CF 4 0.200 300 1.5 Adhesion performance for a specific system can be optimized by designing experiments in which the...