Corrosion of brass and bronze by ammonium halides

Citation
G. Meyer et N. Bohmer, Corrosion of brass and bronze by ammonium halides, Z ANORG A C, 626(6), 2000, pp. 1332-1334
Citations number
12
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
ISSN journal
00442313 → ACNP
Volume
626
Issue
6
Year of publication
2000
Pages
1332 - 1334
Database
ISI
SICI code
0044-2313(200006)626:6<1332:COBABB>2.0.ZU;2-R
Abstract
The intermetallic phases brass (Cu/Zn) and bronze (Cu/Sn) are corroded by a mmonium fluoride and chloride, NH4F and NH4Cl, through selective oxidation of the less noble component zinc and tin, respectively. Copper is recrystal lized as cube-like or tabular single crystals under the respective influenc e of fluoride and chloride. Zinc and tin are incorporated in complex compou nds of which (Nn(4))ZnF3, (NH4)(2)ZnF4, Zn(NH3)(2)Cl-2 and (NH4)(3)SnF7 wer e detected by X-ray powder diffraction.