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 />
Effect <strong>of</strong> Cleaning: TRC AA3105. Commercially twin roll cast materials,<br />
Laboratory cold rolled and back-annealed (350°C)<br />
Solvent degreased<br />
(acetone)<br />
Mixed Acid<br />
(HF/H 2 SO 4 )<br />
AC Electrolytic<br />
(H 3 PO 4 )<br />
Alkaline etch<br />
+desmut<br />
10 mm<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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