Tungsten-doped tin oxide thin films prepared by pulsed plasma deposition

2009 ◽  
Vol 60 (5) ◽  
pp. 415-419 ◽  
Author(s):  
Yanwei Huang ◽  
Qun Zhang ◽  
Guifeng Li ◽  
Ming Yang
2010 ◽  
Vol 256 (22) ◽  
pp. 6526-6530 ◽  
Author(s):  
N.D. Scarisoreanu ◽  
A.C. Galca ◽  
L. Nedelcu ◽  
A. Ioachim ◽  
M.I. Toacsan ◽  
...  

2011 ◽  
Vol 519 (10) ◽  
pp. 3021-3025 ◽  
Author(s):  
Ming Yang ◽  
Zhan Shi ◽  
Jiahan Feng ◽  
Haifeng Pu ◽  
Guifeng Li ◽  
...  

2013 ◽  
Vol 1 (3) ◽  
pp. 310-318 ◽  
Author(s):  
Michele Bianchi ◽  
Alessandro Russo ◽  
Nicola Lopomo ◽  
Marco Boi ◽  
Maria Cristina Maltarello ◽  
...  

2015 ◽  
Vol 15 (02) ◽  
pp. 1540002 ◽  
Author(s):  
MICHELE BIANCHI ◽  
NICOLA LOPOMO ◽  
MARCO BOI ◽  
ALESSANDRO GAMBARDELLA ◽  
GREGORIO MARCHIORI ◽  
...  

Joint prosthesis are usually subjected to several failing mechanisms, including wear of the ultra-high molecular weight polyethylene (UHMWPE) insert. The main goal of this study was to assess the possibility to improve the tribological properties of titanium component by depositing zirconia thin films on its surface by pulsed plasma deposition (PPD) method. Zirconia-coated titanium spheres were tested against UHMWPE disks, both in dry and wet conditions. Zirconia films exhibited a homogenous sub-micrometric grain size distribution and low roughness. Interestingly, zirconia-coated titanium spheres showed lower wear rate of the UHMWPE component, compared to uncoated titanium spheres, supporting the feasibility of the proposed approach.


RSC Advances ◽  
2015 ◽  
Vol 5 (96) ◽  
pp. 78561-78571 ◽  
Author(s):  
Marco Boi ◽  
Michele Bianchi ◽  
Alessandro Gambardella ◽  
Fabiola Liscio ◽  
Saulius Kaciulis ◽  
...  

Calcium phosphate thin films were deposited at room temperature by the pulsed plasma deposition method. After annealing at 600 °C, film mechanical properties and adhesion to the titanium substrate strongly improved.


2015 ◽  
Vol 15 (05) ◽  
pp. 1550070 ◽  
Author(s):  
MICHELE BIANCHI ◽  
MARCO BOI ◽  
NICOLA LOPOMO ◽  
MARIA CRISTINA MALTARELLO ◽  
FABIOLA LISCIO ◽  
...  

Plastic deformation and wear of the ultra-high molecular weight polyethylene (UHMWPE) insert have been pointed out as major issues relating to the long-term stability of an orthopaedic implant. The deposition of protective hard, tough and well-adhered zirconia ( ZrO 2) thin films directly on the surface of the UHMWPE component via the Pulsed Plasma Deposition (PPD) technique has been already demonstrated to be a feasible way to approach this problem. In the current study, the tribo-mechanical properties of ZrO 2-coated UHMWPE with respect to pristine UHMWPE were investigated in detail. Specifically, strength to local plastic deformation, indentation work portioning and creep behavior were evaluated through nanoindentation and micro-scratch tests. Further, preliminary wear data (i.e., rate and volume) were obtained by tribology tests mating coated and pristine UHMWPE with an alumina ball under dry conditions. The results of the mechanical tests evidenced a strong reduction of plastic deformation under both normal and tangential local loads and a drop of the 80% of the creep phenomenon for coated UHMWPE compared to pristine UHMWPE. Despite tribological tests showed similar wear data for coated and pristine UHMWPE, a different wear mechanism was detected between the two groups. The reported results supported the possibility to pursue this novel approach of depositing ZrO 2 thin film to protect the UHWMPE insert and enhance the long-term stability of the orthopaedic implants.


1996 ◽  
Vol 11 (4) ◽  
pp. 895-903 ◽  
Author(s):  
D. H. Lee ◽  
K. D. Vuong ◽  
J. A. A. Williams ◽  
J. Fagan ◽  
R. A. Condrate ◽  
...  

Transparent, conductive indium-tin oxide (ITO) and tin oxide thin films were deposited on soda-lime-silicate (SLS) float glass and silica glass substrates by an RF aerosol plasma technique in an atmospheric environment. The ITO films were deposited from solutions with various In: Sn ratios. The dependence of the film properties on the substrate temperature, deposition time, and tin concentration has been studied. The films were characterized by several techniques including XRD, EDS, electrical resistivity, SEM, optical (IR-UV-Vis transmission), Mössbauer, and infrared spectroscopy. The results showed that film phase, morphology, thickness, crystallite size, and conductivity depend on the solution composition and deposition parameters. XRD revealed that In2O3 was present in the film when a In: Sn ratio of 5: 5 or higher was used; otherwise only SnO2 shown. SEM analysis showed that dense and uniform films were formed with particle sizes ranging from approximately 50 nm to 150 nm. The resistivity of the ITO films ranged from 0.12 to 5.0 ohm-cm at room temperature. Optical transmission of the ITO-coated glasses was not different from the uncoated samples. Infrared results indicated that the structure of the near surface of the glasses was significantly modified with a higher indium concentration. The advantages of the atmospheric, RF aerosol plasma deposition process over other techniques are discussed.


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