NUCOTEC® HE – Hard aNOdiziNg (HardCOaT) OF aLUMiNUM

LAYER STRUCTURE AND TOLERANCES

NUCOTEC® HE HE-Cu HE-GD

max. layer thickness 200 μm 100 μm 70 μm

normal layer thickness 20 - 60 μm 20 - 50 μm 20 - 40 μm

(deviations possible depending on alloy)

HARDNESS AND WEAR-RESISTANCEDue to microporosity, only so-called „apparent hardness“ is measured. Depending on the alloy, it is in the 300 - 600 HV0.025 range.

The wear-resistance of NUCOTEC® HE layers is very good.

LAYER GROWTHNUCOTEC® HE-layers have a greater volume than the aluminum basic material. As a result, normally they “grow” with about 50% of their layer out of the basic material.

LAYERSNUCOTEC® HE-layers consist of very hard, wear-resistant aluminum oxide. They are formed by reaction of the aluminum material in special, cooled acid electrolytes. The transformation produces an outstanding composite of basic material and hard oxide layer.

Nature and production: NUCOTEC® HE-layers are far more compact than conventionally produced anodic oxide layers (anodic layers) and as a result many times more wear- and corrosion-resistant than the latter.

The diagram shows the relative wear-resistance, derived from Taber abraser tests (grinding edge CS 17. load 10 N, revolutions 10-15 K)

APPEARANCE AND DECORATIVE COLORATIONDepending on alloy, gray-brown to anthracite. NUCOTEC® HE layers can also be dyed decoratively black.

Basic material

Penetration depth

GrowthNUCOTEC® HE- layer

Al Zn Mg Cu

5

4

3

2

1

0

St 37

Hardened steel

Chem.nickel

Hard chrome

NUCOTEC® HE- layer

Jessenitz/D • Kaufbeuren/D • Landsberg/D • Lüneburg/D • Nidda/D • Obrigheim/D • Schenefeld/D • Zwickau/DHessigkofen/CH • Pulversheim/FR • Tatabánya/H • Origgio/I • Nara/J • Beuningen/NL • Deurne/NL • Wałcz/PL

Löddeköpinge/S • Tamworth/UK • Baltimore/USA • Fairburn/USA • Milwaukee/USA • Woonsocket/USA

www.impreglon.de • info@impreglon.de

AREAS OF USEThe outstanding functional properties of NUCOTEC® HE layers are used in many technical areas, such as the automotive industry . Mechanical engineering . Aeronautics . Electrical engineering . Medical technology . Food industry . Communications technology . Measuring and control technology . Military technology.

MAIN FEATURESGreat, even hardness . Very good wear protection . Good corrosion protection . Favorable sliding properties . Excellent bond with basic material . Good dimensional consistency . High electrical insulation . High thermal protection . Suitable for food

THERMAL CONDUCTIVITYabout 10 % of basic material

DIELECTRIC STRENGTH

NUCOTEC® HE max. 30 V/μm NUCOTEC® HE-Cu max. 20 V/μm NUCOTEC® HE-GD max. 20 V/μm

THE IDEAL SOLUTION FOR YOUR PARTICULAR APPLICATION

Process type Material (selection) Product example

Nucotec® HE AL wrought and cast alloys, e.g. AlMg3, AlMgSi1, AlMGSiPb, AlZnMgCu, G-AlMg5, G-AlSi10Mg

Precision turning parts, cylindrical pipes, impellers, air bearings, actuating pistons, pneumatic valves, hot plates, injection molds, machine parts

Nucotec® HE-Gu Al wrought and cast alloys with high copper content, e.g. AlCuMg1, AlCuMgPb, AlCuBiPb, G-AlSi9Cu3, G-AlSi6Cu4, AlCu4Ti

Precision turning parts, engine parts, machine parts, rollers, coils, bearing parts, valves

Nucotec® HE-GD Al die-cast alloys, e.g. GD-AlSi9Cu3, GDAlSi10Mg, GD-AlSi12, GD-AlMg9Si

Hydraulic cylinders, pump casing, engine pistons, machine parts, coupling parts