Pyrophosphate system brass-plated tin alloy plating liquid and electroplating process
The invention discloses a pyrophosphate system brass-plated tin alloy plating liquid and an electroplating process. The pyrophosphate system brass-plated tin alloy plating liquid is characterized by comprising the following components: 240-300g/L of pyrophosphate, 20-26g/L of a copper salt, 1.4-2.0g...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | The invention discloses a pyrophosphate system brass-plated tin alloy plating liquid and an electroplating process. The pyrophosphate system brass-plated tin alloy plating liquid is characterized by comprising the following components: 240-300g/L of pyrophosphate, 20-26g/L of a copper salt, 1.4-2.0g/L of a tin salt and 0.8-1.2mL/L of an additive. The plating liquid disclosed by the invention is high in stability, wide in working current density linear range, fine and compact in plated layer crystal and good in binding force. |
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