Chemical resistance and cleanability of glazed surfaces

被引:59
|
作者
Hupa, L
Bergman, R
Fröberg, L
Vane-Tempest, S
Hupa, M
Kronberg, T
Pesonen-Leinonen, E
Sjöberg, AM
机构
[1] Abo Akad Univ, Proc Chem Ctr, FI-20500 Turku, Finland
[2] Ido Bathroom Ltd, FI-10600 Tammisaari, Finland
[3] Univ Helsinki, Dept Agr Engn & Household Technol, FI-00014 Helsinki, Finland
关键词
scanning electron microscopy (SEM); corrosion; crystallization; surface roughening; polycrystalline surfaces; crystalline-glass interfaces; grain boundaries; ceramics;
D O I
10.1016/j.susc.2004.11.048
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Adhesion of soil on glazed surfaces and their cleanability depends on chemical composition, phase composition, and roughness of the surface. The surface can be glossy consisting mainly of a smooth glassy phase. A matt and rough surface consists of a glassy phase and one or more crystalline phases. The origin and composition of the crystalline phases affect the chemical resistance and the cleanability of the surface. Fifteen experimental glossy and matt glazes were soaked in a slightly alkaline cleaning agent solution. The surfaces were spin-coated with sebum, i.e. a soil component typical for sanitary facilities. After wiping out the soil film in a controlled manner, the surface conditions and the soil left were evaluated with colour measurements, SEM/EDXA and COM. The results show that wollastonite-type crystals in the glaze surfaces were attacked in aqueous solutions containing typical cleaning agents. This corrosion led to significant decrease in the cleanability of the surface. The other crystal types observed, i.e. diopside and quartz crystals were not corroded, and the cleanability of glazes containing only these crystals was not changed in the cleaning agent exposures. Also the glassy phase was found to be attacked in some formulations leading to a somewhat decreased cleanability. The repeated soiling and cleaning procedures indicated that soil is accumulated on rough surfaces and surfaces which were clearly corroded by the cleaning agent. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码:113 / 118
页数:6
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