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Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430379
EISBN: 978-1-62708-253-2
..., chlorination, ion exchange, demineralization, reverse osmosis, caustic and chelant treatment, oxygen scavenging, and colloidal, carbonate, phosphate, and sodium aluminate conditioning. boiler tubes carryover corrosion scaling water chemistry internal water treatment external water treatment...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430343
EISBN: 978-1-62708-253-2
... is removed from the feedwater by using deaerators, the potential for corrosion drastically decreases. Additional protection against corrosion can be ensured by injecting chemicals such as hydrazine, known as oxygen scavengers, into the deaerator. A chemical treatment program for low- and medium...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030200
EISBN: 978-1-62708-282-2
... for most of these materials to be effective. Therefore, the previously mentioned materials are usually used in conjunction with oxygen scavengers. Film-forming ability and stability are determined by the interplay of a number of factors involving both the oleophilic hydrocarbon chain and the polar...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230065
EISBN: 978-1-62708-298-3
... cell, while the gangue is fed into a scavenger. From the scavenger, the concentrate is fed to the cleaner cell, while the gangue is sent to the tails pond. The concentrate from the cleaner is sent to a thickener and then through a disc filter prior to being fed into a rotary dryer. Fig. 6.3...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780329
EISBN: 978-1-62708-281-5
... during processing and end-use. This limits the formation of chromophores produced by thermal oxidation. Hindered phenols are not very effective as light stabilizers, because they and their radical scavenger products can absorb sunlight and initiate free-radical oxidation. Hindered phenols are generally...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030209
EISBN: 978-1-62708-282-2
... concentrations. The filming inhibitor selected should not cause an emulsion of the overhead fluids or adversely affect downstream processing units. Scavengers perform as corrosion inhibitors by removing the corrosive species from the process. Scavengers are used to remove oxygen, cyanide, hydrogen sulfide...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030247
EISBN: 978-1-62708-282-2
... scavenging) is a relatively common occurrence in water-injection systems (see the discussion “ Corrosion in Secondary Recovery Operations ” in this article). A number of the properties of oxygen contribute to its uniqueness as a corrosive. Oxygen almost by definition is a strong oxidant. This means that...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220101
EISBN: 978-1-62708-259-4
... to form carbides or carbonitrides that further scavenge interstitials from dissolving in the BCC matrix. These carbides or carbonitrides are usually formed in the solid state and are sufficiently small as to not be visible with optical microscopy techniques. Other chemical compositions, such as high...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.smnm.t52140133
EISBN: 978-1-62708-264-8
.... Table 13.2 Examples of superferritic stainless steels Name %Cr %Mo %Ni Max %C Max %N 18-2 (a) 18 2 … 0.025 0.025 26-1 (a) 26 1 0.1 0.005 0.015 29-4-2 29 4 2 0.01 0.02 (a) Low levels of titanium and/or columbium (niobium) added as scavenger elements...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030019
EISBN: 978-1-62708-282-2
... of corrosion inhibitors is effective in some cases. Elimination of cathodic depolarizers such as oxygen (deaeration of water by thermomechanical means plus oxygen scavengers such as sodium sulfite or hydrazine) is every effective in some aqueous systems. Barrier coatings of a metallic nature have...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170242
EISBN: 978-1-62708-297-6
... grain size lowers the susceptibility of the steel to hot tearing. The sulfur content in manganese steels seldom influences its properties, because the scavenging effect of manganese operates to eliminate sulfur by fixing it in the form of innocuous, rounded, sulfide inclusions. The elongation of...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170107
EISBN: 978-1-62708-297-6
... in Fig. 2(d) . Furthermore, because it promotes the formation of finer and harder pearlite, manganese is often preferred for decreasing or preventing mottling in heavy-section castings. Manganese, in excess of the amount needed to scavenge sulfur, mildly suppresses pearlitic formation. It is...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290023
EISBN: 978-1-62708-306-5
... the decomposition of certain coating ingredients to shield the arc and weld zone from the atmosphere Deoxidizers for scavenging and purifying the deposited weld metal Slag formers to protect the deposited weld metal from atmospheric oxidation and to help shape the weld bead Ionizing elements...
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
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120131
EISBN: 978-1-62708-269-3
... processing has been used for the introduction of high fractions of metalloid (carbon, boron, silicon, gallium) compounds. Rare-earth (RE) elements have been added, but they can serve more to scavenge oxygen (present from the powder-making process) than to produce RE precipitates with titanium. RE oxides have...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030089
EISBN: 978-1-62708-282-2
... used to aid the filtering of colloidal material. Treated water was blended with condensate containing 5 ppm of a filming amine corrosion inhibitor. Final chemistry of the feedwater was controlled to the concentration limits given in Table 4 . Oxygen scavenging was ensured by the addition of catalyzed...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170432
EISBN: 978-1-62708-297-6
.... Additions of up to 5% in wrought alloys and 10% in cast alloys result in aluminum alloys with favorable combinations of strength, formability (wrought products), and corrosion resistance. Magnesium is also used as an oxygen scavenger and desulfurizer in the manufacture of nickel and copper alloys; as a...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230459
EISBN: 978-1-62708-298-3
.... Oxygen can be removed from the solution by deaeration, by various inhibitors, or by scavenger additions, for example: 2 Na 2 SO 3 + O 2 → 2 Na 2 SO 4 Excessive removal of oxygen, however, may interfere with the passivation action of a protective...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240433
EISBN: 978-1-62708-251-8
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060273
EISBN: 978-1-62708-261-7