第五章-电镀与化学镀(2)

2021-09-24 17:09

Structure of commercial copper after heating in hydrogen for 3 hours at 75O℃ (about 250 X).

Electroplating is an electrochemical process by which metal is deposited on a substrate by passing a current through the bath.

Hydrogen blisters in the wall of a steel container.

Electroplating is an electrochemical process by which metal is deposited on a substrate by passing a current through the bath.

Vanadiμm wire shattered by cathodic charging with hydrogen.

Electroplating is an electrochemical process by which metal is deposited on a substrate by passing a current through the bath.

Figure 5: Steel sample with no cathodic treatment (x 1).

Steel sample after cathodic treatment (x 1).

Electroplating is an electrochemical process by which metal is deposited on a substrate by passing a current through the bath.

Steel sample with no cathodic treatment (x 3).

Steel sample after cathodic treatment (x 3).

Electroplating is an electrochemical process by which metal is deposited on a substrate by passing a current through the bath.

Steel sample after cathodic treatment than heating at 200°C for five minutes (x 3).

Steel sample after cathodic treatment then heating at 200°C for one hour (x 3).

Electroplating is an electrochemical process by which metal is deposited on a substrate by passing a current through the bath.

Steel

Electroplating is an electrochemical process by which metal is deposited on a substrate by passing a current through the bath.

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