Protein Adsorption of Highly (001) Oriented Hydroxyapatite Coating Using Rf-Plasma Spraying

2007 ◽  
Vol 361-363 ◽  
pp. 705-708 ◽  
Author(s):  
Masahiko Inagaki ◽  
Hisashi Nakashima ◽  
Takao Saito ◽  
Tetsuya Kameyama
Keyword(s):  
Bovine Serum Albumin ◽  
Protein Adsorption ◽  
Plasma Spraying ◽  
Thermal Plasma ◽  
Microscopic Examination ◽  
Fluorescein Isothiocyanate ◽  
Rf Plasma ◽  
Thermal Plasma Spraying ◽  
Spraying Method ◽  
Rf Plasma Spraying

The protein adsorption behavior was investigated for highly (001) oriented hydroxypatatite coatings (HACs). Highly (001) oriented (HO-) HACs and HAC with low orientation (LO-HAC) were prepared on titanium (Ti) substrates through a radio-frequency thermal plasma spraying method. Sintered HA pellets (S-HA) was also prepared as a control. The solution of 22 'g/100 'l PBS of the fluorescein-isothiocyanate (FITC) labeled bovine serum albumin (FITC-BSA), immunoglobulin G (FITC-IgG) and cytochrom c (FITC-CCC) was separately dropped on the surface of HACs and was incubated for 30 min. After the incubation, such HACs were washed with the PBS additionally supplemented with 125mM NaCl and observed using a fluorescence microscope. Fluorescence microscopic examination indicates that FITC labeled proteins somewhat adsorbed on the HACs, while proteins adsorbed little on S-HA surface. In particular, it can be seen that FITC-CCC adsorbed more prominently on the HO-HAC.

Highly Oriented Hydroxyapatite Coating Using rf Plasma Spraying

2006 ◽  
Vol 309-311 ◽  
pp. 615-618 ◽  
Author(s):  
Masahiko Inagaki ◽  
Yoshiyuki Yokogawa ◽  
Tetsuya Kameyama
Keyword(s):  
Plasma Spraying ◽  
Crystal Orientation ◽  
Coating Layer ◽  
Longitudinal Axis ◽  
Rf Plasma ◽  
Ha Coating ◽  
Thermal Plasma Spraying ◽  
Xrd Patterns ◽  
Spraying Method ◽  
Rf Plasma Spraying

Highly oriented hydroxyapatite (HA) coatings were prepared on titanium (Ti) substrates through a radio-frequency thermal plasma spraying method. XRD patterns showed that the HA coating layer had an structure with (00l) preferred crystal orientation. TEM observation showed that 200-800 nm-width prismatic crystals were formed in HA splats and the longitudinal axis of such prismatic crystals oriented vertical to the coating's surface. TEM images also indicate that the interface between prismatic crystals became compacted. SAD pattern show that the longitudinal axis of prismatic crystals corresponds to the <001> axis of HA.

scholarly journals Fabrication of Silicon Nitride Thick Coatings by Reactive RF Plasma Spraying

2004 ◽  
Vol 45 (12) ◽  
pp. 3304-3308 ◽  
Author(s):  
Motohiro Yamada ◽  
Tatsuya Inamoto ◽  
Masahiro Fukumoto ◽  
Toshiaki Yasui
Keyword(s):  
Silicon Nitride ◽  
Plasma Spraying ◽  
Rf Plasma ◽  
Thick Coatings ◽  
Rf Plasma Spraying

Simulation of Thermal Plasma Spraying of Partially Molten Ceramics: Effect of Carrier Gas on Particle Deposition and Phase Change Phenomena

2000 ◽  
Author(s):  
I. Ahmed ◽  
T. L. Bergman
Keyword(s):  
Plasma Spraying ◽  
Thermal Plasma ◽  
Particle Deposition ◽  
Carrier Gas ◽  
Thermal Plasma Spraying ◽  
History Of ◽  
Powder Particles ◽  
Phase Change Phenomena ◽  
Plasma Spraying Process ◽  
Nanostructured Ceramics

Abstract A 3D simulation of the thermal plasma spraying process is reported. In particular, the effect of the radial injection of a carrier gas is taken into account for a dilute spray. The thermal history of powder particles of different sizes is predicted. It is shown that introduction of a carrier gas can lead to a significant modification of the plasma jet, and can have an effect on the thermal histories of the injected particles. The study is motivated by the processing of non-traditional materials, specifically nanostructured ceramics.

scholarly journals Influence of Substrate Materials upon Fabrication of Aluminum Nitride Coatings by Reactive RF Plasma Spraying

2006 ◽  
Vol 47 (7) ◽  
pp. 1671-1676 ◽  
Author(s):  
Motohiro Yamada ◽  
Hajime Nakamura ◽  
Toshiaki Yasui ◽  
Masahiro Fukumoto ◽  
Koyata Takahashi
Keyword(s):  
Aluminum Nitride ◽  
Plasma Spraying ◽  
Rf Plasma ◽  
Nitride Coatings ◽  
Influence Of Substrate ◽  
Rf Plasma Spraying

Novel Zirconia Composite Coatings Fabricated by Twin Hybrid Plasma Spraying

2005 ◽  
Vol 475-479 ◽  
pp. 2883-2886
Author(s):  
Heji Huang ◽  
Keisuke Eguchi ◽  
Makoto Kambara ◽  
Toyonobu Yoshida
Keyword(s):  
Plasma Spraying ◽  
Thermal Plasma ◽  
Composite Coatings ◽  
Layered Composite ◽  
Zirconia Coating ◽  
System A ◽  
Thermal Plasma Spraying ◽  
Optimization Study ◽  
Hybrid Plasma ◽  
Microscopic Techniques

With a newly established 300kW twin hybrid plasma spraying system, a peculiar layered composite zirconia coating was successfully deposited. The coating is consisting of splats and dendritic columns, which come from thermal plasma spraying and thermal plasma PVD, respectively. A 120µm-thick composite coating was deposited in 10 minutes at the corresponding growth rate of 100µm/min, if the rotation of the substrates is considered. The microstructure of such composite coatings has been characterized using a variety of microscopic techniques as part of a process optimization study.

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