摘要:
A transparent glass product (11), e.g. for use as an inspection window in contact with water, includes at least a surface layer (14) of a water soluble glass. Slow dissolution of the glass provides a continuously renewable clear surface.
摘要:
Eine Vorrichtung zur Korrosionsverhinderung bei flüssigkeitsgekühlten Verbrennungsmotoren aus Aluminium enthaltend ein wasserlösliches Glas, welches in Gebrauch in die Kühlflüssigkeit eintaucht. Durch Auflösen des Glases wird eine genügende Konzentration von Phosphat-, Boratund Metasilicationen in der Flüssigkeit aufrechterhalten, um eine Korrosion des Mottro-intestiors zu verhindern.
摘要:
A transparent glass product (11), e.g. for use as an inspection window in contact with water, includes at least a surface layer (14) of a water soluble glass. Slow dissolution of the glass provides a continuously renewable clear surface.
摘要:
A controlled release glass is based on phosphorus pentoxide as the glass forming oxide, perhaps with up to 10% replaced by one or more of the oxides such as Si 2 03, B 2 0 3 , GeO 2 , As 2 O 3 or Sb 2 O 3 . The glass contains a modifying oxide of a material to be released slowly, e.g. one of the oxides of Li, Na, K, Cs, Rb, Ca and Al, depending on the deficiency to be cured.
摘要:
A copper phosphate water soluble glass composition. The composition of the glass may be adjusted so as to release copper at a uniform preselected rate and to produce a desired pH in the resultant solution. In one application of the glass copper may be supplied to an animal from an implant formed from a cupric oxide/phosphorus pentoxide glass which also incorporates one or more glass modifying oxides such as alkali metal oxides and alumina, to control the glasssolubility. Suitable glasses comprise 5-55 mole % cupric oxide + alkali metal oxides. 45-75 mole % phosphorus pentoxide, and not more than 15 mole % alumina, where the copper oxide concentration is not less than 5 mole %.
摘要:
A subcutaneous glass implant for supplying one or more trace elements to an animal. The implant is made e.g. from a zinc oxide based glass which is prepared in rod form, a short section of the rod being implanted under the skin of an animal. Typically the glass may contain selenium dioxide for supplying small quantities of selenium to the animal.
摘要:
Ferrous metal surfaces are protected against corrosion by providing the metal (11) with a flash coating (12) of copper followed by coating the structure with a corrosion inhibiting layer wholly or partially comprising a water soluble glass. A plant for providing the coating treatment is also described.
摘要:
Alkaline residues in a hydraulic cement are neutralised by incorporating in the cement an acid material having a dissolution rate sufficiently slow that the setting process is not adversely affected. Typically the neutralising agent comprises an alkali metal/phosphorus pentoxide glass which is incorporated in the cement prior to or after mixing with water. The pH of the glass is adjusted by controlling its phosphorus pentoxide content, and the dissolution rate is determined by including e.g. calcium oxide and/or alumina to the glass composition.