Production and properties of electrolytically deposited novel alloy coatings on steel

Directorate-General For Research And Innovation European Commission

Description

Industrial research and development

Sujets

• Sciences et techniques

Informations

• Publié par: DIRECTORATE-GENERAL-FOR-RESEARCH-AND-INNOVATION-EUROPEAN-COMMISSION
• Nombre de lectures: 8
• Langue: English
• Poids de l'ouvrage: 4 Mo

Extrait

COMMISSIONE
EUROPEA
AFFARI SCIENTIFICI / SCIENCE EUROPEAN
RICERCA / RESEARCH COMMISSION
SVILUPPO / DEVELOPMENT
ricerca tecnica acciaio
technical steel research
Proprietà e prestazioni
Produzione e proprietà
di nuovi rivestimenti
elettrolitici
a base di leghe metalliche
Properties and in-service performance
Production and properties of
electrolytically deposited
novel alloy coatings on steel
h
Rapporto / Report
EUR 18384 IT/EN STEEL RESEARCH COMMISSIONE EUROPEA
Edith CRESSON, membro della Commissione
Ricerca, innovazione, istruzione, formazione e gioventù ÉÊ^k
DG XII/C.2 — Azioni di RST: tecnologie industriali e dei materiali —
Materiali e acciaio \£f
Per informazioni: sig. H. J.-L. Martin
Indirizzo: Commissione europea, rue de la Loi 200 (MO 75 1/10),
d\ Β-1049 Bruxelles - Tel. [phone]; fax [phone]
EUROPEAN COMMISSION
Edith CRESSON, Member of the Commission
responsible for research, innovation, education, training and youth
DG XII/C.2 — RTD — Actions: Industrial and materials technologies —
Materials and steel
Contact: Mr H. J.-L. Martin
Address: European Commission, rue de la Loi 200 (MO 75 1/10),
B-1049 Bruxelles — Tel. [phone]; fax [phone] Commissione europea
European Commission
ricerca tecnica acciaio
technical steel research
Proprietà e prestazioni
Produzione e proprietà di nuovi rivestimenti
elettrolitici a base di leghe metalliche
Properties and in-service performance
Production and properties of electrolytically
deposited novel alloy coatings on steel
P. Miceli
Centro sviluppo materiali SpA
vla di Castel Romano, 100/102
1-00129 Roma
V John
British Steel pie
9, Albert Embankment
London SE1 7SN
United Kingdom
Convenzione n. / Contract No 7210-MB/410/811
1.7.1992-30.6.1995
Rapporto finale
Final report
Direzione generale
Affari scientifici, ricerca e sviluppo
Directorate-General
Science, Research and Development
1998 EUR 18384 IT/EN AVVERTENZA
Né la Commissione europea, né alcuna persona che agisca per suo conto,
è responsabile dell'uso che dovesse essere fatto delle informazioni che seguono.
LEGAL NOTICE
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It can be accessed through the Europa server (http://europa.eu.int).
Una scheda bibliografica figura alla fine del volume.
Cataloguing data can be found at the end of this publication.
Lussemburgo: Ufficio delle pubblicazioni ufficiali delle Comunità europee, 1998
Luxembourg: Office for Official Publications of the European Communities, 1998
ISBN 92-828-4484-6
© Comunità europee, 1998
Riproduzione autorizzata con citazione della fonte.
© European Communities, 1998
Reproduction is authorised provided the source is acknowledged.
Printed in Luxembourg
STAMPATO SU CARTA SBIANCATA SENZA CLORO
PRINTED ON WHITE CHLORINE-FREE PAPER This report is published in two parts: -► Part one: English
-► Part two: Italian
Questo rapporto é pubblicato in 2 parti: -► Parte I in Inglese
-► Parte II in Italiano CONTENTS
Page
1. INTRODUCTION 9
2. THE DEVELOPMENT OF THE ZINC-ALUMINA DISPERSION 10
COATING
2.1 Experimental Procedure 10
2.2 Initial Observations
2.3 Further Experiments To Achieve A Stable Electrolyte 11
2.4 Results and Discussion2
3. DEVELOPMENT OF THE ZINC-SILICA COATING 13
1
3.1 Initial Experiments With The Zn-Si02Dispersion
3.2 System 15
Experimental Work With The Silica System Using An
Electroplating Simulator (EPS)
4. CONCLUSIONS 22
23
5. REFERENCES
25
TABLES
31
FIGURES LIST OF TABLES
1. DETAILED EDX MICROANALYSIS RESULTS FOR SAMPLES PREPARED FROM
THE 10g/l AND 20g/1 Si02 ELECTROLYTES.
2. EDX ANALYSIS OF PHOSPHATE COATING ON Zn AND Zn-Si02 SAMPLES
3. RESULTS FROM THE XRD EXAMINATION OF Zn-Si02 COATED MATERIAL
PRODUCED ON THE EPS.
4. DEPTH PROFILE FOR THE'2g/l'Si02 SAMPLE.
5.H PROFILE FOR THE'10g/l'Si02 SAMPLE.
6. DEPTH PROFILE FOR THE '20g/r Si02 SAMPLE.
7. SURFACE TEXTURE MEASUREMENTS FOR Zn AND Zn-Si02 (2g/l).
8. HUMIDITY TEST RESULTS FOR CHROMATED Zn and Zn-Si02 (2g/l) PANELS.
9. CONDENSATION TEST RESULTS FOR CHROMATED Zn AND Zn-Si02 (2g/l)
PANELS. LIST OF FIGURES
1. SCHEMATIC ILLUSTRATION OF THE BENCH - SCALE PLATING CELL.
2. ELECTROPLATING SIMULATOR - SECTIONAL ARRANGEMENT.
3. REVERSE IMPACT TEST ON SAMPLE WITHOUT ALUMINA LAYER AT
INTERFACE (X 100).
4. SCANNING ELECTRON MICROGRAPH SHOWING THE SURFACE
MORPHOLOGY OF THE ZINC-ALUMINA COATING.
5. CROSS-SECTION OF Zn-Si02 COATING (NO NITRATE IN ELECTROLYTE)
-IMAGING SIMS ANALYSIS (Silica in the coating ranged from single particles
of the order to nm upto clusters of particles of the order of 2μτη).
6.N OF Zn-Si02 COATING (SODIUM NITRATE IN ELECTROLYTE)
- IMAGING SIMS ANALYSIS (Silica in the coating ranged from single particles
of the order of nm upto clusters of particles of the order of 2μπι).
7. CROSS-SECTION OF Zn-Si02 coating (NICKEL NITRATE IN ELECTROLYTE) -
IMAGING SIMS ANALYSIS (Silica in the coating ranged from single particles of
the order of nm upto clusters of particles of the order of 2μιτι).
8. ELECTROPLATING SIMULATOR - SECTIONAL ARRANGEMENT.
9.GR - SCHEMATIC ARRANGEMENT OF CELLS.
10. SECTIONAL AND PLAN VIEWS OF PLATING CELL.
11. "AUTOMOTIVE" TEST PANEL.
12. SURFACE MORPHOLOGY OF COATINGS WITHOUT Si02 (INNER SURFACE).
13.EY OFS WITHOUT Si02 (OUTER.
14. SURFACE MORPHOLOGY OF COATINGS WITH Si02 (INNER SURFACE).
15.EY OFS WITH Si02 (OUTER.
16. SAMPLE PRODUCED FROM THE 10g/l Si02 ELECTROLYTE.
17.ED FROM THE 20g/l Si02.
18. ELECTRON IMAGE ILLUSTRAING SURFACE MORPHOLOGY OF PHOSPHATE
COATING (0% Si02 IN ELECTROLYTE ).
19. ELECTRON IMAGE ILLUSTRATING SURFACE MORPHOLOGY OF PHOSPHATE
COATING (2g/l Si02 IN ELECTROLYTE). 20. ELECTRON IMAGE ILLUSTRATING SURFACE MORPHOLOGY OF PHOSPHATE
COATING (10g/l Si02 IN ELECTROLYTE).
21. ELECTRON IMAGE ILLUSTRATING SURFACE MORPHOLOGY OF PHOSPHATE
COATING (20g/l Si02 IN.
22. DEPTH PROFILE FOR THE'2g/l'Si02 SAMPLE.
23. DEPTH PROFILE FOR THE '1 Og/I' Si02 SAMPLE.
24. DEPTH PROFILE FOR THE '20g/l' Si02 SAMPLE.
25. SIMS CHEMICAL IMAGE SHOWING SURFACE SILICA LAYER.
26. SIMSL IMAGE SHOWING THE DISTRIBUTION OF SILICA AT
THE BOTTOM OF A DEPTH PROFILE CRATER.
27. FORMABILITY TEST RESULTS (MODIFIED STRETCH DRAW).