研究目的
To propose a new process route of laser rapid manufacturing (LRM) for depositing hopeite coatings with the metallurgical bond to overcome the issue of detachment of hopeite coatings during implanting of coated implants.
研究成果
The study successfully established LRM as an effective alternative process route for synthesizing multifunctional hopeite coatings on Ti64 substrate, which can prevent infection by promoting osseointegration.
研究不足
The study focuses on the deposition of hopeite coatings on Ti64 substrate using LRM and evaluates its properties. However, the long-term performance and clinical applicability of these coatings in vivo are not addressed.
1:Experimental Design and Method Selection:
The study used LRM for depositing hopeite coatings on Ti64 substrate.
2:Sample Selection and Data Sources:
Hopeite powder was preplaced on Ti64 substrate.
3:List of Experimental Equipment and Materials:
A
4:0 kW continuous wave, Ytterbium-doped, fiber laser was used. Hopeite powder properties included zinc content = 8%, phosphate = 8%, pH value = Experimental Procedures and Operational Workflow:
A 1 mm powder bed thickness was maintained on the Ti64 substrate. Process parameters were laser power = 1000 W and scanning speed =
5:6 m/min. Data Analysis Methods:
Microstructure, phase composition, microhardness, antibacterial efficacy, and bioactivity were evaluated using SEM, XRD, Vickers microhardness tester, FACS technique, SBF immersion test respectively.
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X-ray diffraction
RIGAKU Model: Smart lab 3 KW
RIGAKU
Used for phase composition evaluation
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scanning electron microscope
ZEISS EVO 50
ZEISS
Used for microstructure and surface morphology evaluation
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fiber laser
2.0 kW continuous wave, Ytterbium-doped
Used for direct laser melting of preplaced hopeite powder
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hopeite powder
Asha Enterprises, Mumbai, India
Used for depositing hopeite coatings on Ti64 substrate
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Vickers microhardness tester
Used for microhardness evaluation
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fluorescence-activated cell sorting technique
Used for antibacterial efficacy evaluation
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simulated body fluid immersion test
Used for bioactivity evaluation
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