日本金属学会誌

J. Japan Inst. Metals, Vol. 16, No. 7 (1952),
pp. 374-378

Research on the Application of the Metalline Replica for the Electron Microscope. On the Cu-SiO2 Method

Yoshimi Tanabe


Abstract:

This method is applied to iron, steel, special steel, cast iron and cast steel. And this replica is made easily by two step processes, and it is very accurate at the displacement of the structure. In this method, we need not cut off the sample from the testing materials. This replica is made by the following order and method.
(1) Cu is plated by the electro chemical displacement on the surface of testing material. (2) Cu-replica is stripped off from testing material by the use of methylmetacrylate adhesive on the celluloid plate. (3) SiO2 vapour is fixed on the Cu-replica. (4) Cu-SiO2 replica is stripped off by chloroform-benzene sol. (1:1) from celluloid plate. (5) Cu-SiO2 replica is cleansed by alcohol. (6) Cu is dissolved by dilute nitric acid (1:1.5). (7) SiO2-replica is cleansed by distilled water. (8) SiO2-replica is floated in distilled water and SiO2-replica is fixed on the sample holder. This replica method is named Cu-SiO2 method and this method has advantages which will be shown in next item. (1) SiO2-replica need not cast shadow and SiO2-replica is in good contrast. (2) SiO2-replica has the shadowing effect which has very clear and short shadows. (3) Cu-replica can be immediatly examined by optical microscope.


(Received 1952/4/9)

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