Corrosion behavior of the embedded layer with nanometer phase in Ti and Tiplus C-implanted steel

Citation
Th. Zhang et al., Corrosion behavior of the embedded layer with nanometer phase in Ti and Tiplus C-implanted steel, NUCL INST B, 169, 2000, pp. 112-117
Citations number
10
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
ISSN journal
0168-583X → ACNP
Volume
169
Year of publication
2000
Pages
112 - 117
Database
ISI
SICI code
0168-583X(200006)169:<112:CBOTEL>2.0.ZU;2-3
Abstract
Ti and Ti + C ions were implanted into H13 steel, the cross-sections of the samples were observed by transmission electron microscope (TEM). The resul ts show that the structure of the implanted layer has greatly changed. The layer, embedded with nanometer phase of FeTi2, TiC and Fe-C compound, is fo rmed in Ti and Ti + C ion-implanted layer. The thickness of the embedded la yer is greater than that of the corresponding ion range. The structure of t he double ion-implanted layers is obviously different. The wear resistance and hardness of Ti or Ti + C-implanted H13 steel increased. and the frictio n coefficient decreased. This indicates that unique resistance for wear and corrosion can be obtained. An even higher corrosion resistance has been fo und, as the layer with an embedded structure was formed in Ti or Ti + C-imp lanted H13 steel. The results of electrochemical measurement show that the corrosion current density decreases obviously with increase of ion dose. Th e corrosion current density of Ti-implanted steel with a dose 1.3 x 10(18) cm(-2) is 5-13% of that of unimplanted steel. The corrosion behavior of Ti + C dual implantation could be further improved,. the corrosion current den sity is 1.2% of that of non-implanted samples. The corrosion trace could no t be observed on the annealing sample by scanning electron microscope (SEM) , after multi-sweep cyclic voltammetry (CV) of 40 cycles were performed on it. Finally, the modification mechanism of Ti or Ti + C-implanted HI3 steel is discussed. (C) 2000 Elsevier Science B.V. All rights reserved.