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Sodium hydroxide

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Published: 01 December 2008
Fig. 18 Isocorrosion curves for various materials in sodium hydroxide. SCC, stress corrosion cracking. Courtesy of Outokumpu Stainless More
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.htcma.t52080409
EISBN: 978-1-62708-304-1
... chlorides, molten nitrates, molten fluorides, molten carbonates, and molten sodium hydroxide. molten salt corrosion 15.1 Introduction Molten salt technology plays an important role in various industries. In the heat treating industry, molten salts are commonly used as a medium for heat...
Image
Published: 01 January 2017
Fig. 4.34 Effect of applied stress on the time to failure of type 347 in oxygenated sodium hydroxide and potassium hydroxide solutions at 300 °C (570 °F). After Ref 4.64 More
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Published: 01 January 2000
Fig. 56 Potentiokinetic polarization curve and electrode potential values at which intergranular and transgranular SCC appears in a 10% sodium hydroxide (NaOH) solution at 288 °C (550 °F). (a) Alloy 600. (b) Alloy 800. (c) AISI type 304 stainless steel More
Image
Published: 01 August 2018
Fig. 17.82 Ductile cast iron, annealed (3.9% C, 2.9% Si, 0.32% Mn, 0.06% P, 0.037% Mg, 1.5% Ni, 0.57% Cu). The etchant reveals silicon segregation. Silicon content decreases as the distance from the graphite nodule increases. The etchant is composed of 28 g sodium hydroxide (NaOH), 4 g picric More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1984
DOI: 10.31399/asm.tb.mpp.t67850538
EISBN: 978-1-62708-260-0
... should be between 12.0 and 12.5. Do not allow the pH to fall below 12.0 Use sodium hydroxide to raise the pH. The free cyanide content is maintained at 7.5 g/L. Electrolytic Iron Plating Electrolytic Iron [ 22 ] 288 g ferrous chloride 57 g sodium chloride 1000 mL distilled water...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430379
EISBN: 978-1-62708-253-2
... to overheating. 7.2.6 Sodium Sodium exists in water in its ionic form as Na + ions. Sodium ions combine with hydroxide ions to form sodium hydroxide (i.e., caustic soda). Sodium hydroxide attacks the highly stressed areas of boiler tubes and steam turbines, leading to stress-corrosion cracking failure...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910021
EISBN: 978-1-62708-250-1
... 0.0295 Potassium chloride, KCl 8.94 0.1119 Potassium cyanide, KCN 8.21 0.1218 Potassium hydroxide, KOH 5.07 0.1972 Sodium chloride, NaCl 11.6 0.0862 Sodium hydroxide, NaOH 5.77 0.1733 Sodium carbonate, Na 2 CO 3 19.1 0.0523 Sodium sulfate, Na 2 SO 4 16.8 0.0595...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.pnfn.t65900053
EISBN: 978-1-62708-350-8
.... Important Factors for Successful Results Wash all grease and oils from parts to be nitrided. Oils may contain sulfur, which is detrimental and will reduce efficiency. If work is washed in an alkaline cleaner containing sodium hydroxide or similar alkali, the work should be rinsed in hot distilled water...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230107
EISBN: 978-1-62708-298-3
...-mineral-containing samples must first be fused with sodium carbonate, potassium hydroxide, or sodium fluoride, because their complete dissolution is usually difficult. Fritting with sodium peroxide or low-temperature fusion with ammonium fluoride can also be done. When finely powdered, beryllium minerals...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230071
EISBN: 978-1-62708-298-3
... compounds of beryllium. Some of the usual fusion reagents from analytical chemistry have been successfully used for the decomposition of the ore. The reactants hydrofluoric acid and sodium or potassium hydroxide dissolve beryl ore, but the chemical consumption by the silica component is too expensive. Also...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120307
EISBN: 978-1-62708-269-3
... hydroxide 5–10 21 (70) 0.001 10 Boiling 0.021 28 Room 0.003 40 80 (176) 0.127 50 57 (135) 0.013 50 Boiling 0.051 73 129 (264) 0.178 50–73 188 (370) =1.09 50 38 (100) 0.023 Sodium hypochlorite 6 Room Nil Sodium hypochlorite + 15% NaCl + 1%NaOH 1.5–4 66–93...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.mgppis.t60400215
EISBN: 978-1-62708-258-7
... effective. In some cases, for example, adding sodium hydroxide pellets to water, such as in the alkaline sodium picrate etchant, produces an exothermic reaction (heat generated). The heat is more uniformly distributed if the solution is stirred. In many cases, a mildly heated solution hastens...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090419
EISBN: 978-1-62708-266-2
... carbonate • Potassium chloride • • • • • Potassium chromate • Potassium hydroxide • • • • Potassium permanganate • Silver nitrate • Sodium aluminate...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430204
EISBN: 978-1-62708-253-2
.... The damage occurs especially in the presence of heavy scale deposits on the water side and in high-heat-flux areas as well as on the ID surfaces of slanted or horizontal tubes. Below the scale deposits, the local concentration of sodium hydroxide is high enough to remove the protective magnetite film per...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280203
EISBN: 978-1-62708-267-9
... acids … Alkaline oxidizing 60–120 95–105 205–220 Potassium permanganate 5 wt% Sodium hydroxide 20 wt% Water bal Pickling cycle Acid pickling 5–30 49–60 120–140 Hydrofluoric acid 4 wt% Procedure for removing scale from Inconel alloys, many of which may...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.pnfn.t65900241
EISBN: 978-1-62708-350-8
... contaminants or semisolid contaminants such as grease or paints. Generally, the cleaner is a caustic sodium hydroxide (NaOH) solution for steel. The part must be thoroughly rinsed and dried immediately after alkaline cleaning. Emulsion Cleaning Emulsion cleaning is used to remove organic surface...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120085
EISBN: 978-1-62708-269-3
... and tarnish from titanium alloys, except beta titanium alloys. Aqueous caustic solutions containing 40 to 50% sodium hydroxide have been used successfully to descale many titanium alloys. One bath containing 40 to 43% sodium hydroxide operates at a temperature near its boiling point, 125 °C (260 °F...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230093
EISBN: 978-1-62708-298-3
...  NH 4 HF 2 + Be = ( NH 4 ) 2 BeF 4 + H 2 The metal is also dissolved in an aqueous solution of sodium or potassium hydroxide, with the generation of hydrogen and the formation of a beryllate: (Eq 8.2) 2  NaOH + Be = Na 2 BeO...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720161
EISBN: 978-1-62708-305-8
... cementite, but not carbides high in chromium; attacks sulfides; delineates grain boundaries in hypereutectoid steels in slowly cooled condition Hydrogen peroxide and sodium hydroxide 10 mL H 2 O 2 (30%), 20 mL NaOH 10% solution in distilled water Must be fresh; etching time, 10–20 min; highly caustic...