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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DOI
10.12681/eadd/1020
Handle URL
http://hdl.handle.net/10442/hedi/1020
ND
1020
Alternative title
ΜΕΛΕΤΗ ΤΗΣ ΔΟΜΗΣ ΗΛΕΚΤΡΟΛΥΤΙΚΩΝ ΑΠΟΘΕΜΑΤΩΝ ΝΙΚΕΛΙΟΥ
Author
Αργυρίου, Αργύριος
Date
1988
Degree Grantor
National Technical University of Athens (NTUA)
Committee members
ΣΑΚΕΛΛΑΡΙΔΗΣ ΠΑΥΛΟΣ
ΣΠΥΡΕΛΛΗΣ ΝΙΚΟΛΑΟΣ
ΤΣΙΜΑΣ ΣΤΑΜΑΤΗΣ
ΜΠΑΝΤΕΚΑ ΕΛΕΝΗ
ΛΟΙΖΟΣ ΖΑΦΕΙΡΗΣ
Discipline
Engineering and TechnologyChemical Engineering
Keywords
ALL SULPHATE BATHS; BRIGHTNERS; ELECTROCRYSTALLIZATION OF NICKEL; ELECTRODEPOSITION OF NICKEL; ELECTROPLATING; Hardness; LEVELLING AGENTS; ORGANIC ADDITIVES; PREFERRED ORIENTATIONS; Roughness
Country
Greece
Language
Greek
Description
293 σ.
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