Hard anodizing

hard anodizing
hard anodizing
hard anodizing
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hard, sulfuric, chromic, sulfo-tartaric
Type of substrate
aluminum, titanium
industrial, for the aerospace industry, medical, for the construction industry, for the food industry, for robotics
Production method
medium series, large series, small series, individual
Other characteristics
with coloring


Titanium Anodizing The electrolytic production of an oxide layer on titanium and titanium alloys is done in accordance with the international standard for aerospace (Specification LN 29747). In combination with lubricants, this layer serves to protect the titanium fasteners against wear and also provides limited protection for less precious metals against bimetallic corrosion if in contact with titanium. Because of the slight thickness of the layer (normally < 2µm) and the required etching preparatory treatment, which entails material abrasion in the same magnitude, it is not generally necessary to take alterations in dimensions into account. The producible colour range varies from blue shades of various intensity and vividness, including yellowish, reddish and greenish colours up to violet. Apart from applications in aviation and space travel, it is also used in orthopaedics and medical technology.


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