STUDY OF STRUCTURE OF NICKEL ELECTRODEPOSITS
Abstract
THE PURPOSE OF THIS THESIS IS TO CONTRIBUTE TO THE STUDY OF THE STRUCTURE AND THE PROPERTIES OF ELECTROLYTIC NICKEL DEPOSITS. THE X-RAY ANALYSIS OF DEPOSITS PREPARED FROM A BATH OF PURE NICKEL SULPHATE (1,22M), ALLOWED THE TRACING OF A DIAGRAM DEPICTING THE PREFERRED ORIENTATIONS, WHERE THE ORIENTATIONS [110]A., [100], [210] AND [110]B. ARE NOTICED. A PREVIOUS DIAGRAM WITH THE RESPECTIVELY DIAGRAMS, OF THE PREFERRED ORIENTATIONS OF THE DEPOSITS FROM A WATTS BATH, ONE MAY NOTE THE APPEARANCE OF THE ORIENTATION [100] IN TWO WELL DISTINGUISHED REGIONS, THE EXTENSION OF THE ORIENTATION [210] IN MUCH LESS ACIDIC SOLUTIONS AND THECOMPLETELY DISAPPEARANCE OF THE ORIENTATION [211]. THE PRESENCE OF 2-BUTYNE-DIOL 1,4 PROVOKES THE DRASTIC LIMITATION OF THE ORIENTATION [210], WHILE THE ORIENTATION [111] PRESENTS A NOTICEABLE STABILITY. THE PRESENCE OF BENZYNE SULPHONATE PROVOKES THE DRASTIC LIMITATION OF THE ORIENTATION [100]. IT WAS ALSO NOTED THAT THE MECHANICAL PROPERTIES (HARDNESS- ROUGHNESS) ...
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