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chromic anhydride

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Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001244
EISBN: 978-1-62708-170-2
... for plating microcracked chromium Substrate material Constituents Chromic anhydride to sulfate ratio Temperature Current density Chromic acid Fluoride g/L oz/gal g/L oz/gal °C °F A/m 2 A/ft 2 First plating bath Steel 338–375 45–50 … … 100:1 46–52 115–125 1075–1615...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003215
EISBN: 978-1-62708-199-3
... corrosion protection. Most decorative chromium coatings have been applied using hexavalent chromium processes that are based on chromic anhydride. However, since 1975, trivalent chromium processes have become available commercially. They are increasing in importance because of their increased throwing...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003215
EISBN: 978-1-62708-199-3
... decorative chromium coatings have been applied using hexavalent chromium processes that are based on chromic anhydride. However, since 1975, trivalent chromium processes have become available commercially. They are increasing in importance because of their increased throwing and covering powers and because...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003244
EISBN: 978-1-62708-199-3
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003244
EISBN: 978-1-62708-199-3
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0005650
EISBN: 978-1-62708-177-1
..., etchants Acetic acid, chromic acid, flammable liquids, isopropyl alcohol Perchloric acid Electropolishing Acetic anhydride, alcohol, some organics, oil, grease Sulfuric acid Etchants Methyl alcohol, potassium chlorate, potassium perchlorate, and potassium permanganate Fig. 3 Diagram...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003749
EISBN: 978-1-62708-177-1
... carbitol. Liquid; diethylene glycol monoethyl ether cellosolve. Liquid; ethylene glycol monoethyl ether chromic acid. Dark-red crystals or flakes; CrO 3 ; also called chromic anhydride, chromic acid anhydride, and chromium trioxide. See chromic oxide . chromic anhydride. See chromic acid...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004187
EISBN: 978-1-62708-184-9
... Effect of HF addition to mixture at 79 °C (175 °F) on corrosion rates of alloys (a) 625 and (b) G-30 Fig. 8 Effect of alloying elements on corrosion rates in acetic acid and NaCl mixtures. Boiling point of 100% acetic acid is 117.9 °C (244.2 °F). Boiling point of 100% acetic anhydride is 139.6...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003748
EISBN: 978-1-62708-177-1
...-formamide (inhibits oxidation) Do not add water to solution. Use for 10–15 s Silicon 93 mL HNO 3 70 mL HF 17 mL water 30 mL acetic anhydride 30 mL acetic acid Use at 20 °C (70 °F) for 10–15 min. Discard after use Silicon 20 mL HNO 3 5 mL HF Use at 20 °C (70 °F) for 5–10 s (CP-4 Reagent) SiO...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003247
EISBN: 978-1-62708-199-3
... solutions of chromic acid (CrO 3 , or chromic anhydride) to which sodium sulfate (Na 2 SO 4 ) has been added. Grades of chromic acid used for chromium plating are satisfactory. Table 22 gives compositions of etchants commonly used. Etching should follow soon after final polishing. The specimen should...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003247
EISBN: 978-1-62708-199-3
.... The most useful etchants for microscopic examination of zinc and zinc alloys are aqueous solutions of chromic acid (CrO 3 , or chromic anhydride) to which sodium sulfate (Na 2 SO 4 ) has been added. Grades of chromic acid used for chromium plating are satisfactory. Table 22 gives compositions of etchants...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.9781627081771
EISBN: 978-1-62708-177-1
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001321
EISBN: 978-1-62708-170-2
... acid 7664393 Hydrogen fluoride (Hydrofluoric acid) 123319 Hydroquinone 78591 Isophorone 58899 Lindane (all isomers) 108316 Maleic anhydride 67561 Methanol 72435 Methoxychlor 74839 Methyl bromide (Bromomethane) 74873 Methyl chloride (Chloromethane) 71556 Methyl...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003489
EISBN: 978-1-62708-195-5
... primary amine or acid anhydride. The amine or anhydride groups react with the epoxy groups by a simple addition reaction to give a densely cross-linked structure. Some epoxy compositions can be cured through a homopolymerization reaction initiated by strong organic bases (or rarely, acids...
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
... operation HCl absorption Chemical Condensers, HCl absorbers Recovery of by-product HCl Chromic acid Heating solutions Electroplating Coils, heat exchangers … Diphenyl chloride HCl absorption Chemical HCl absorbers Recovery of by-product HCl Detergents (chlorinated) HCl absorption...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004218
EISBN: 978-1-62708-184-9
... plating bath Nickel 75 0.06 0.4 95 2.0×10 −2 Anodizing, sulfuric acid Sulfuric acid 150 0.02 0.1 95 9.9×10 −3 Anodizing, chromic acid Chromic acid 100 0.5 3 95 2.0×10 −1 Gold plating bath Gold 5 0.009 0.06 95 2.0×10 −4 Cyanide (CN) 10 0.009 0.06 95 3.9×10 −4...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003764
EISBN: 978-1-62708-177-1
..., sweetish aromatic to pungent odor; density, 1.59 g/cm 3 Cerium (IV) nitrate Ce(NO 3 ) 4 … Crystalline Chromic acid H 2 CrO 4 Poison, corrosive Liquid: aqueous solution of chromium trioxide, yellow-red; causes fire with organic substances; strong oxidizing agent; carcinogen Chromium (III...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005672
EISBN: 978-1-62708-198-6
...-viscosity liquids to solid pastes or films. During the curing process, epoxy adhesives polymerize and crosslink to form covalent bonds between the epoxy resin and hardener through an epoxide ring-opening reaction. Amines, amides, mercaptans, and anhydrides are common hardeners. Catalysts and heat can...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003829
EISBN: 978-1-62708-183-2
... Attacked Chlorotoluene-sulfonic Room <0.05 2 Chromic, all concentrations 100 212 <0.05 2 Citric, to 30% concentration Boiling <0.05 2 Crotonic Boiling <0.05 2 Fatty acids 400 750 <0.05 2 Fluorosilicic 65 150 <0.05 2 Formic, pure Boiling <0.05...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003822
EISBN: 978-1-62708-183-2