Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Addressing processing problems associated with plasma spraying of hydroxyapatite coatings

P Cheang1, K A Khor

  • 1School of Applied Science, Nanyang Technological University, Singapore, Singapore.

Biomaterials
|March 1, 1996
PubMed
Summary

Biomedical coatings like hydroxyapatite (HA) are used in implants to support bone growth and healing. However, the quality of these coatings can vary due to differences in the manufacturing process. This study looks at how factors like powder shape and thermal spray conditions affect coating performance. The researchers found that these variations lead to inconsistent results in coating properties and biological behavior. They suggest that improving the feedstock material and adding extra treatment steps can help achieve more reliable HA coatings. This work aims to guide future improvements in coating technology for better medical outcomes.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Essential signals in publication trends and collaboration patterns in global Research Integrity and Research Ethics (RIRE).

Scientometrics·2022
Same author

Increasing Fatigue Endurance of Hydroxyapatite and Rutile Plasma Sprayed Biocomponents by Controlling Deposition In-Flight Properties.

ACS biomaterials science & engineering·2021
Same author

Influence of international co-authorship on the research citation impact of young universities.

Scientometrics·2016
Same author

Neutron diffraction residual strain measurements in nanostructured hydroxyapatite coatings for orthopaedic implants.

Journal of the mechanical behavior of biomedical materials·2011
Same author

Comparison of candidate materials for a synthetic osteo-odonto keratoprosthesis device.

Investigative ophthalmology & visual science·2010
Same author

Characterization of spark plasma sintered Ag nanopowders.

Nanotechnology·2010

Area of Science:

  • Biomedical coatings engineering
  • Thermal spray technology in materials science

Background:

Biomedical coatings must meet strict criteria to support biological integration and mechanical stability. Coatings like hydroxyapatite (HA) are widely used in prosthetics due to their bioactive properties. However, achieving consistent quality in these coatings remains a challenge. Thermal spray processes are popular for HA application, but variability in the process affects coating performance. This variability can lead to inconsistent phase composition and mechanical properties. Poor performance in some HA coatings has raised concerns about their reliability. Existing studies have linked these issues to process-related factors. These factors include powder morphology and thermal spray parameters. Understanding how these variables influence coating behavior is essential for improving outcomes in biomedical applications.

Purpose Of The Study:

This study aims to identify the key challenges in plasma spraying of HA coatings. The focus is on how process variability affects coating properties and performance. The goal is to improve the reliability of HA coatings in biomedical settings. The researchers examine how feedstock characteristics influence coating outcomes. They also explore the limitations of thermal spraying alone in achieving desired results. The study suggests that additional treatment stages may be necessary. The motivation stems from the need for more consistent and reliable HA coatings. This work provides insights into how feedstock conditioning can address these issues.

Keywords:
biomedical coatingsthermal spray technologyhydroxyapatite propertiescoating reliability

Frequently Asked Questions

Variability in process parameters and feedstock properties leads to inconsistent coating performance.

It influences microstructural and mechanical properties, which impact coating performance.

It helps reduce variability and improve deposition efficiency and coating structure.

It cannot fully address feedstock variability or achieve necessary coating conditions.

Bioresorption, degradation, and bone apposition are influenced by coating inconsistencies.

Related Experiment Videos

Main Methods:

The researchers analyzed the effects of process parameters on HA coating properties. They examined phase composition, structure, and chemical composition in detail. Variations in powder morphology were studied for their impact on microstructure. Mechanical properties were also evaluated to assess performance. The study compared different thermal spray conditions and feedstock types. The researchers used advanced characterization techniques to measure coating behavior. They considered how these findings relate to real-world performance in implants. The approach included both experimental testing and literature-based analysis.

Main Results:

The study found that process variability significantly affects HA coating characteristics. Variations in phase composition and structure were observed across different samples. Coating performance, including bioresorption and bone apposition, was inconsistent. Powder morphology was identified as a key factor influencing microstructural outcomes. Mechanical inconsistencies were linked to differences in feedstock properties. The researchers noted that current thermal spray methods have limitations. They observed that existing feedstock variability hinders coating reliability. The data suggest that feedstock conditioning could improve deposition efficiency.

Conclusions:

The authors propose that feedstock conditioning is necessary to improve HA coating reliability. Tailoring powder morphology may enhance deposition efficiency and coating structure. The study highlights the limitations of thermal spraying alone in achieving desired outcomes. Additional treatment stages may be required to overcome these constraints. The findings suggest that process optimization is critical for consistent performance. The researchers emphasize the importance of controlling feedstock variability. They conclude that addressing these issues can lead to more reliable HA coatings. The study provides a foundation for future improvements in biomedical coating technology.

They propose tailoring feedstock morphology and using secondary treatment stages.