<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml">Deposition of hydroxyapatite coating on porous Ti and Ti alloys with electrochemical and biomimetic deposition approach is presented. The enhancement of phosphates deposition by well oriented and uniform titanium oxide nanotube array on the surface of titanium substrate is discussed.</abstract>

Hydroxyapatite coatings on porous ti and ti alloys

<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml">Two methods of assessing fracture properties of adhesive joints were studied. Two wedge tests: with continuous deflection and with force measurements were compared. Asymmetric geometry of the bonded joint was considered, i.e. two different plates of aluminium alloys: Al-Cu and Al-Mg, were bonded with epoxy DGEBA adhesive. The analytical model is shown to estimate the values of fracture properties: crack position and critical fracture energy. It was found that both methods allow easy and reliable estimation and comparison of fracture properties, although some differences were observed.</abstract>

Faculty of Mechanical Engineering, Dept. of Material Science and Engineering, Gdańsk University of Technology, Narutowicza 11/12, 80-233 Gdansk, Poland

Laboratoire de Mécanique Physique (LMP)-UMR CNRS, Université Bordeaux 1, 5469, 351 Cours de la Libération, 33405 Talence Cedex, France

Reliable method of assessing fracture properties of asymmetric bonded joints

<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml">A series of cavitation erosion tests were carried out to investigate the resistance of the TiN coatings to cavitation action. The TiN coatings were deposited at various deposition parameters on austenitic stainless steel, X6CrNiTi18-10, and with various thickness by means of the cathodic arc evaporation method (ARC PVD). Investigations were performed in a cavitation tunnel with a slot cavitator. The investigations show that hardness, Young's modulus, adhesion and coating thickness have an influence on coating endurance to cavitation degradation. The obtained parameter H•LC2/E•h1/2 shows very good fitting to date points (R2=0.96). With the increase of the H•LC2/E•h1/2 parameter the mass loss decreases indicating a continuous improvement in the cavitation erosion resistance.</abstract>

The experimental resistance parameter for TiN coating to cavitation action

<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml">This article reviews the various surface modification techniques pertaining to titanium and titanium alloys including physical treatment, mechanical treatment, and chemical and electrochemical treatment. The proper surface modification expands the use of titanium and its alloys in the biomedical field for long-term implants retaining the excellent properties of substrate material and improving the specific surface properties required by clinical applications.</abstract>

Surface modifications of ti and its alloys

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