Czasopismo | INŻYNIERIA MATERIAŁOWA | Rocznik 2010 - zeszyt 3

High and low voltage anodic etching of microand nanocrystalline Ti-based biomaterials

nr katalogowy: 52785

Titanium based materials are commonly used as biomaterials due to their excellent biocompatibility and mechanical properties. In respect to biomedical applications, usually we are interesting in pure Ti, Ti-6Al-4V and other alloys as well as Ti-ceramic biocomposites [1÷8]. To improve biocompatibility, osseointegration or corrosion resistance, the implant surface improvement is required, which provide sufficiently high roughness. The rough surface of the implant for hard tissue applications can be prepared mainly by mechanical [9] or electrochemical [10, 11] methods. In the electrochemical process, the material is an anode immersed in the electrolyte, so the process is called anodic oxidation. The anodic etching can be made at broad potential range, which results in different oxide type. The etching usually proceeds in H3PO4 or CH3COOH electrolytes with small HF or NH4F content. These small additions, usually in the range of 0.1÷2%, result in increasing current density followed to enhanced surface dissolution. Additionally, the etching rate can be substantially improved by decreasing grain size. For nanostructure materials, the large volume fraction of the grain boundaries states an easy way for the electrolyte penetration. Atoms, which lie on the grain boundaries are firstly removed and additionally small nanograins are easily released from the alloy, resulting in pores formation. That material has lower density than microcrystalline counterpart and the etched surface is comparable in morphology to the metallic foams. Due to large pores, this material is attractive for strong fixation with bones. experimental data In this work, the electrochemical etching was applied to the surface modification of the microcrystalline Ti, as well as micro- and nanocrystalline Ti-6Al-4V alloys. The microcrystalline materials were bought in Godfellow and, nanocrystalline one was prepared by 48 h mechanical alloying in SPEX 8000 [...]

Jeśli masz wykupiony/przyznany dostęp - zaloguj się. Skorzystaj z naszych propozycji zakupu!

Publikacja


e-Publikacja (format pdf) - nr 52785 "High and low voltage anod..." licencja: Osobista Produkt cyfrowy	10.00 zł

Zeszyt


INŻYNIERIA MATERIAŁOWA - e-zeszyt (pdf) 2010-3 licencja: Osobista Produkt cyfrowy	65.00 zł

Prenumerata

INŻYNIERIA MATERIAŁOWA - prenumerata cyfrowa
licencja: Osobista

Produkt cyfrowy
Nowość

402.00 zł

INŻYNIERIA MATERIAŁOWA - papierowa prenumerata roczna + wysyłka
licencja: Osobista

Szczegóły pakietu

Nazwa
INŻYNIERIA MATERIAŁOWA - papierowa prenumerata roczna	492.00 zł brutto 455.56 zł netto 36.44 zł VAT (stawka VAT 8%)
INŻYNIERIA MATERIAŁOWA - pakowanie i wysyłka	21.00 zł brutto 17.07 zł netto 3.93 zł VAT (stawka VAT 23%)

513.00 zł

INŻYNIERIA MATERIAŁOWA - PAKIET prenumerata PLUS
licencja: Osobista

Szczegóły pakietu

Nazwa
INŻYNIERIA MATERIAŁOWA - PAKIET prenumerata PLUS (Prenumerata papierowa + dostęp do portalu sigma-not.pl + e-prenumerata)	600.00 zł brutto 555.56 zł netto 44.44 zł VAT (stawka VAT 8%)

600.00 zł

Zeszyt

2010-3

Twój Koszyk

Publikacja

Zeszyt

Prenumerata

Zeszyt

Czasopisma