Page 515 - Copper and Bronze in Art: Corrosion, Colorants, Getty Museum Conservation, By David Scott

Bodleian Library, patina on, definition of, xii, 3 burial environment, 35 - 42
50t-51 t history of, 5 atacamite formation in, 112
4
boleite, cumengite and, 142 leaded, 03 carbon dioxide in, 37
bonatite low-tin vs. high-tin, 401-40 2 carbonized material in, 0
4
in patinas, 153 patinas on. See bronze patinas Chinese bronze mirrors in,
properties of, 1481 phases of, 4 0 0 - 4 0 3 3 4 0 - 4 4
4
bornite properties of, 00 copper phosphate corrosion
in copper smelting, 226 Renaissance, xii, 329-3 3 in, 243
4
as corrosion product, 229 tinned surfaces on, 02 - 403 copper sulfate deposition in,
botallackite, 125 variation in, xiii 164-6 5
formation of, 128 bronze disease copper sulfide formation in,
natural occurrences of, 123 A M T and, 381 227-31
3
as pigment, 134,139 benzotriazole and, 80 fire and, 40
properties of, 123 t, 125, 138-39 , causes of, 123,125,126-2 7 human impact on, 39
188 p copper chlorides and, 122, malachite formation in, 112 -13,
1
synthetic, 139, 88p 125-3 4 164-6 5
thermodynamic data for, 1361 definition of, 125 marine, 112-13
brass reactions in, 126-2 8 mechanisms of corrosion in,
development of, 5 - 6 research on, 126-2 9 38-3 9
4
dezincification of, 11, 27-32 , symptoms of, 126,186 p moisture in, 0
9
54, 234 treatment for, 8, 367- 68, organic materials with copper
stress-corrosion cracking in, 380, 381 in, 72
31-3 2 bronze patinas, 322-5 0 phosphates in, 37, 41, 243
Brazilian palm, 397n3 8 alloy composition and, 324-2 5 rates of corrosion in, 35-37 , 361
3
7
Bremen blue, 06 ancient, -9 recent changes in, 41
Bremen green, 306-30 7 arsenic in, 327 research on, problems for, 42
Brighton Pavilion, patina on, artificial, 323 - 24, 344 - 48 short-term vs. long-term
50t-51 t attitudes toward, 333 exposure to, 36-3 7
British Museum black, 90,17 9 p, 328-2 9 soil in
4
conservation treatment at, 355 changing views of, 323-2 6 acidity of, 0 - 42
4
patina on roof of, 501-sit on Chinese mirrors, 339 - 49 buffering capacity of, 1- 42
British Non-Ferrous Metals coatings and, 327, 329-3 2 horizons of, 38
Research Association complexity of, 322-2 3 properties of, 35-3 7
finishes on, 349 Burrell Collection, bronze corro­
( B N F M R A )
on burial corrosion rates, 35, 361 Indian, 348 - 49 sion in, 302-303 , 4481
on marine bacteria, 67 lead and, 328 buttgenbachite
brochantite, 147-52 during nineteenth century, 333 connellite and, 139
as corrosion product, 305 preserved structures in, 349-5 0 properties of, 250, 251t
in patinas, 152,160 during Renaissance, 329-3 3 Byzantine green, recipe for, 283
as pigment, 165,166 Roman, 334-3 8
posnjakite and, 152-53 structures of, classification of, C
properties of, 147-48 , i48t , I 9 0 p 336-3 7 C soil horizon, 38
rain exposure and, 55, 56 f treatments for prevention of, calcium copper acetate hexahydrate
rainwater pH and, 149-5 2 326 recipe for, 282, 411-12
recipe for, 414 variation in, 327-2 9 X-ray diffraction data for, 4431
stability of, i4of , 150, i 5 i f brown copal shellac, 383 calcium copper tetrasilicate, 259
thermodynamic data for, 1361 brown copper pigments, 315 caledonite
X-ray diffraction data for, 375, brown fuzzies, 232-3 5 in patinas, 162
4551 Brunswick green, 306-30 7 properties of, i48 t
bronze(s) recipe for, 306-307 , 415 Calgon, 355, 366, 375, 396 ni
ancient use of, 30 6 calumetite, 141-4 2
early analysis of, 7 X-ray diffraction data for, as corrosion product, 141-4 2
modern analysis of, 7- 8 306, 450 t as pigment, 141
patinas on, -9 B T A . See benzotriazole Canosa vase, Egyptian blue in,
7
chemistry of, 4 0 0 - 4 0 3 Buddha at Kamakura, Great, 201p, 259-60 , 26 0 f
160-62 , 193 p

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