Hydroxyapatite coating on biodegradable AZ31 and Mg-Ca alloys prepared by RF-magnetron sputtering
- 1. National Research Tomsk Polytechnic University (Russian Federation)
- 2. James Cook University, Townsville (Australia)
Description
A thin film of hydroxyapatite (HA) was deposited on AZ31 and Mg-Ca alloys by using radio frequency (RF) magnetron sputtering. The thickness of the HA coating was determined to be 750 nm. The phase composition, microstructure, and surface morphology of the HA coatings were investigated using X-ray diffraction and scanning electron microscopy. In vitro degradation behaviour of the HA coated alloys was evaluated in simulated body fluid (SBF) and 3.5wt.% NaCl solution using electrochemical method. The coatings homogeneously covered the entire surface of the substrates. The coating structure corresponded to a nanostructured HA. The ultrathin coating significantly improved the degradation resistance of the alloy. Nanocrystalline HA coating significantly improved the corrosion resistance of the Mg-Ca and AZ31 magnesium alloys. The polarization resistance (Rp) of the coated Mg-Ca alloy was more than two-order of magnitude higher and the corrosion current density Icorr reduced by ∼ 98% as compared to the base alloy
Additional details
Identifiers
- DOI
- 10.1063/1.4936001;
Publishing Information
- Journal Title
- AIP Conference Proceedings
- Journal Volume
- 1688
- Journal Issue
- 1
- Journal Page Range
- p. 030006-030006.4
- ISSN
- 0094-243X
- CODEN
- APCPCS
Conference
- Title
- 5. international scientific conference on new operational technologies
- Acronym
- NEWOT'2015
- Dates
- 29-30 Sep 2015
- Place
- Tomsk (Russian Federation)
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 47066362
- Subject category
- S36: MATERIALS SCIENCE; S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- APATITES; BIODEGRADATION; BODY FLUIDS; CALCIUM ALLOYS; COATINGS; COMPARATIVE EVALUATIONS; CORROSION; CORROSION RESISTANCE; ELECTROCHEMISTRY; MAGNESIUM ALLOYS; MAGNETRONS; MICROSTRUCTURE; NANOSTRUCTURES; POLARIZATION; RADIOWAVE RADIATION; SCANNING ELECTRON MICROSCOPY; SODIUM CHLORIDES; SPUTTERING; THIN FILMS; X-RAY DIFFRACTION
- Descriptors DEC
- ALKALI METAL COMPOUNDS; ALLOYS; BIOLOGICAL MATERIALS; CHEMICAL REACTIONS; CHEMISTRY; CHLORIDES; CHLORINE COMPOUNDS; COHERENT SCATTERING; DECOMPOSITION; DIFFRACTION; ELECTROMAGNETIC RADIATION; ELECTRON MICROSCOPY; ELECTRON TUBES; ELECTRONIC EQUIPMENT; EQUIPMENT; EVALUATION; FILMS; HALIDES; HALOGEN COMPOUNDS; MATERIALS; MICROSCOPY; MICROWAVE EQUIPMENT; MICROWAVE TUBES; MINERALS; PHOSPHATE MINERALS; RADIATIONS; SCATTERING; SODIUM COMPOUNDS; SODIUM HALIDES
Optional Information
- Notes
- (c) 2015 AIP Publishing LLC