Patent · US Expired

Process for the chemical plotting of boundary layer flows, and chemigraphy materials for the practice thereof

US4380170A · kind A · utility

4Cited by

3References

11Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Richard Dotzer · Nuremberg, DE
Winfried Plundrich · Kalchreuth, DE

Key dates

Filing date	Jul 14, 1980
Grant date	Apr 19, 1983
Priority date	—
Expiry date	Jul 14, 2000

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC25D11/24
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

The chemical plotting of boundary layer flows in liquids with the use of uncompacted, coated, anodically oxidized aluminum surfaces is effected using a colored or uncolored liquid or a coating or pointillization with a substance, preferably a dye, soluble in water or organic media and which can be included or adsorbed in the eloxal layer. The process serves to plot boundary layer flows in water, organic media and oils in a wide temperature range.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.