Cadmium Substitution - garteur
Cadmium Substitution - garteur
Cadmium Substitution - garteur
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GARTEUR LIMITED<br />
1 Activation bath (non aqueous)<br />
2 Rinsing fluid bath<br />
3 Aluminizing (non aqueous)<br />
4 Outlet rinsing bath<br />
5 Activation (aqueous)<br />
Table A8; Galvano-Aluminium electrodeposited aluminium<br />
process sequence<br />
Electrolyte KF[1.5Al Et 3 , 0.25 Al-i-Bu 3 , ).25AlMe].3C 7 H 8<br />
Coating temperature<br />
100 o C<br />
Coating voltage<br />
5 - 30V<br />
Current density 0.2 - 2.0 A/dm 2<br />
Conductivity at 100 o C<br />
25 mS/cm<br />
Current characteristic<br />
Polarity switching, rectangular pulse<br />
Deposition rate 12μm at 1 A/dm 2<br />
Current efficiency<br />
100% at the cathode and at the anode<br />
Table A9; Electrolyte properties and process parameters<br />
1 Abrasive cleaning with alumina grit<br />
2 Parts transferred to coating chamber<br />
3 Sputter clean<br />
4 Coat with aluminium<br />
5 Remove parts from coating chamber<br />
4 Glass bead peen<br />
5 Chromate conversion coating<br />
Table A10; Physical Vapour Deposition sequence<br />
Page 46<br />
GARTEUR SM/AG17 TP128
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