Critical Issues for Chrome-free Pretreatment of Aluminium Alloys
Critical Issues for Chrome-free Pretreatment of Aluminium Alloys
Critical Issues for Chrome-free Pretreatment of Aluminium Alloys
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<strong>Critical</strong> <strong>Issues</strong> <strong>for</strong> <strong>Chrome</strong>-<strong>free</strong> <strong>Pretreatment</strong> <strong>of</strong> <strong>Aluminium</strong> <strong>Alloys</strong><br />
Acetone degreased only<br />
Lockheed tested samples <strong>of</strong> AA5182-O<br />
Z19 mild acid cleaned (H 3 PO 4 based degreaser)<br />
Ridolene acid cleaned (H 2 SO 4 / HF)<br />
Caustic cleaned + Nitric acid desmutted<br />
24 hrs 48 hrs 96 hrs 168 hrs 500 hrs 1000 hrs<br />
International Conference on Environmental friendly <strong>Pretreatment</strong>s fo <strong>Aluminium</strong> and other Metals, Oslo, Norway, June 16-18, 2004
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