Use of organic dyes for the colouration of anodised aluminium with electrolytic methods
Abstract
Α)THE INFLUENCE OF SOME CATIONIC DYES WHICH WERE USED AS ADDITIRES IN THE ACIDIC TIN(II) SULFATE SOLUTIONS,DURING THE D.C. TREATMENT AT ANODISED ALUMINIUM,WAS INVESTIGATED.THESE DYES ARE: BASIC GREEN 4,BASIC BLUE 12,BASIC BLUE 9,BASIC ORANGE 14 AND WITH C.I. 45010.THE OPTIMUM CONDITIONS ARE 13V DC AND 3MIN OF CATHODIC TREATMENT.ALL THE ABOVE DYES HAVE POSITIVE INFLUENCE ON THE TIN DEPOSITION AT THE BOTTOM OF THE POVES OF THE ANODIC FILM AND THUS ON THE COLOUR INTENSITY,THE DYE BASIC GREEN 4 HAS AN-ALSO- POSITIVE INFLUENCE ON THE BAMER LAYER CHARACTERISTICS,BECAUSE IT CAN BALANCE THE PTT AT THE BOTTOM OF THE PORES,DECREASE THE DISSOLUTION OF THE OXIOLE AND THE EXTENT OF ITS DESTRUCTION. B)THE ACTION OF THE ANIONIC DYE ACID BLUE 45,WHICH IS ADDED IN A CONCENTRATION OF 7.5GIL IN THE ACIODIC TIN (II) SULFATE SOLUTIONS,WITH THE USE OF A.C. -15V(50HZ)-WAS INVESTIGATED.THE ELECTROLYTIC COLOURED PROVES HAVE A GREY-BLUE LUEE.THE METHOD IS A COMBINATION OF THE METHOD OF ELECTROLYTIC COLOURI ...
show more
![]() | Download full text in PDF format (15.04 MB)
(Available only to registered users)
|
All items in National Archive of Phd theses are protected by copyright.
|
Usage statistics
VIEWS
Concern the unique Ph.D. Thesis' views for the period 07/2018 - 07/2023.
Source: Google Analytics.
Source: Google Analytics.
ONLINE READER
Concern the online reader's opening for the period 07/2018 - 07/2023.
Source: Google Analytics.
Source: Google Analytics.
DOWNLOADS
Concern all downloads of this Ph.D. Thesis' digital file.
Source: National Archive of Ph.D. Theses.
Source: National Archive of Ph.D. Theses.
USERS
Concern all registered users of National Archive of Ph.D. Theses who have interacted with this Ph.D. Thesis. Mostly, it concerns downloads.
Source: National Archive of Ph.D. Theses.
Source: National Archive of Ph.D. Theses.






