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Average pit density after four weeks exposure<br />

Mud 1 Mud 2 Mud 3 Mud 4 Mud 5<br />

90<br />

80<br />

70<br />

60<br />

50<br />

40<br />

30<br />

20<br />

Pit density [cm -2 ]<br />

0<br />

10<br />

6060 / etched<br />

6060 / anodised<br />

6016 / etched<br />

6016 / Ti+Zr cc<br />

5754/ etched<br />

5754 / Ti+Zr cc<br />

5018 / etched<br />

5018 / Ti cc<br />

Date: 2004-01-13 • Page: 18 • Hydro Aluminium

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