Page 519 - Copper and Bronze in Art: Corrosion, Colorants, Getty Museum Conservation, By David Scott

D Ε properties of, 207p , 311-12
daguerreotype process, 2 6 - 2 7 E D T A . See ethylene diamine recipes for, 310 -11, 416 -17
Dalziel family vaults, 200p tetra-acetic acid USe Of, 207p, 312-14
2
gerhardtite in, 00 p, 251 Egyptian blue, 257- 62 X-ray diffraction data for,
David (Donatello), 210 p, 351 i 4 in artifacts, 256f-57f, 257, 311-12, 452t-54t
n
lacquer on, 331 2 5 9 - 6 0 , 26 0 f enamel, on copper, 321
Dead Sea Scrolls, conservation chemical formulation of, 259 - 62 enargite, in copper smelting, 226
re-treatment of, 2 5 - 2 6 degradation of, 96, 262, 265 - 66 Encyclopaedia Britannica, 22-23
1
Dead Youth, Statuette of a, 169 ρ frits of, 265 environment(s), 0-79. See also
patina on, 7,169 geographic distribution of, 258 specific types
deep ocean zone, 661, 67 properties of, 201p, 2 6 1 - 6 2 ephebe of Marathon, 351 n9
depolymerization, 76 synthesis of, 257, 258-29 , 261-6 2 black patina on, 328
deposition, definition of, 8 o n i 5 in wall paintings, 258 epitaxy, 13
desalination, electrolytic, 368, Egyptian green, 263 - 64 Ercalene nitrocellulose lacquer, 383
396 n i 6 degradation of, 265 - 66 eriochalite, properties of, 244
devilline, properties of, 1481,158 identification of, 263 ethylene diamine tetra-acetic acid
dezincification of brasses, 27-32 synthesis of, 263 - 64 ( E D T A ) , 366, 374
in ancient vs. modern alloys, in wall paintings, 02p, 263 Europe, outdoor corrosion
2
29, 32 Egyptian tombs, pigment deterio­ rates in, 531
effects of, 11 ration in, 2 6 5 - 6 6
and namuwite formation, 234 Eh. See oxidation-reduction power F
potential regions for, 9 - 3 0 , 30 f electrochemical corrosion face mask, Moche, sampleite in,
2
reaction sequences of, 2 9 - 3 0 reactions, 14 199 p, 245
resistance to, 29 electrochemical plating, early faience, 264
zinc content and, 54 history of, 2 0 - 2 6 fang lei (wine vessel)
digenite electrochemical reduction, for malachite in, 103,182 p, 357
as corrosion product, 228 bronze disease, 367- 68 preservation of, 357
in niello, 238 electrochemical replacement, faustite
properties of, 226, 227 t 20-2 1 occurrences of, 250
Dionysis, statue of, patina on, 333 electrochemical series, 15 -16 properties of, 241, 2421
dioptase, 255 electrode potential turquoise and, 247
decorative uses of, 252 for copper, 399 X-ray diffraction data for, 4291
as pigment, 255 in Pourbaix diagrams, 32 Ferapontov Monastery (Russia),
properties of, 2531, 255 electrolysis Cathedral of the Nativity
disodium ethylene diamine tetra- for bronze disease, 3 6 8 - 6 9 of the Virgin at
acetic acid ( E D T A ) , 366, 374 corrosion removal with, 365 langite in, 165
djurleite electrolytic desalination, 368, pseudomalachite in, 246
as corrosion product, 228, 230, 396 nie synthetic malachite in, 115 -16
232 electrolytic reduction, 363 finishes, 349
in niello, 238 electroplating, in ancient world, 18 fire, and burial environments, 40
i
properties of, 227t electrotyping, 2 2 - 2 6 fish, electric, s
drying and sealing methods, identification of, 2 3 - 2 4 Fitzwilliam Museum (England),
355-56 in museums, 25 conservation treatment
D T P A . See sodium diethylene in photography, 2 6 - 2 7 at, 354
triaminepentaacetic acid structure of copper after, flambé glazes, 94
Dundas, Lawrence, portrait of 23-24 , 172 ρ Florentine tint, 333
(Zoffany), green verditer technique for, 2 2 - 2 3 fog, and urban corrosion, 55, 56 f
in, 115 Elsener green, synthesis of, 314 -15 Follow the Arrow (Léger), emerald
Duo Win, tomb of, patinas in, 348 émail brun, 326 green in, 312, 4531
dyeing processes, mordant, 74 emerald, copper, 255 formaldehyde
emerald (Schweinfurt) green, atmospheric concentrations of
310-14 conversion factors for, 441
color-reflectance data for, modern, 441
312, 313 f in museum environment,
parrot green and, 270 299-300
problems with, 314

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