Soor

Introduction:

Soor is a German word that refers to the process of drying and developing a patina on various materials such as metals, ceramics and stone. This process occurs due to the oxidation of elements of materials in the open air. In this article, we will look at what Soor is, what materials undergo the Soor process, and what factors influence the rate of its development.

What is Soor?

One way or another, during the drying process, surface films of oxide, less than a micrometer thick, gradually form on the metal surface, which settle very slowly, and are removed from the surface of the metal part in the form of clusters with water or blowing air. This material is called Coora films. The structure of the film is a chemical compound of the following elements: oxides of iron, copper, aluminum, zinc, nickel, chromium. In addition to them, much rarer oxide compounds of copper and other metals can be found in the composition. The qualitative characteristics of the films - hardness, reliable adhesion to the base metal, very weak thermoplasticity, excellent corrosion properties - attract close attention to them from manufacturers. And the occurrence of corrosion problems in heating equipment systems is a generally accepted practice. It is the oxide coating Coori that is the most aggressive agent for the main equipment, ensuring the formation of a low-permeable vapor-air layer when the moistened unit of the installation dries out. And also, after some time, the protective coating turns into a condensation-active mixture - spent Coori, or dust, which, if it gets into the heating system, can cause