The electroforming technique is widely employed in jewellery and electronics to produce Au alloys. The addition of B4C to the electrodeposited AuCu may improve the mechanical properties of the layers. In this paper the microstructure and corrosion resistance properties of AuCu and codeposited AuCu/B4C from cyanide free baths are presented. The composite samples were obtained by dispersing micrometric B4C, at diffreent concentrations, in the deposition bath. The microstructure, volume fractions and corrosion properties of samples with different B4C concentration codeposits have been investigated and compared to those belonging to AuCulayers. The addition of B4C slightly increases the hardness of the electroformed and induces a moderate decrease of corrosion resistance.
Characterization and corrosion properties of electroformed AuCu+B4C
CALLIARI, IRENE;
2001
Abstract
The electroforming technique is widely employed in jewellery and electronics to produce Au alloys. The addition of B4C to the electrodeposited AuCu may improve the mechanical properties of the layers. In this paper the microstructure and corrosion resistance properties of AuCu and codeposited AuCu/B4C from cyanide free baths are presented. The composite samples were obtained by dispersing micrometric B4C, at diffreent concentrations, in the deposition bath. The microstructure, volume fractions and corrosion properties of samples with different B4C concentration codeposits have been investigated and compared to those belonging to AuCulayers. The addition of B4C slightly increases the hardness of the electroformed and induces a moderate decrease of corrosion resistance.
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