The influences of plasma spraying parameters on the characteristics of hydroxyapatite coatings: a quantitative study

Yang, Chih-Wei; Wang, B. C.; Chang, Edward F.; Wu, Jie

doi:10.1007/bf00120267

Cited by 91 publications

(45 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The thicknesses of APS coatings are in the range 200-300 μm and quite porous. The coating thickness depends on the composition of plasma gas used which is Ar/H 2 /N 2 /He, plasma gun input power, gas low rate, powder feeding rate and characteristics of feed materials, and spray stand-of distance, which are frequently varied [25,26].…”

Section: Plasma-spraying Techniquementioning

confidence: 99%

Hydroxyapatite-Based Coating on Biomedical Implant

Harun¹,

Asri²,

Sulong³

et al. 2018

Hydroxyapatite - Advances in Composite Nanomaterials, Biomedical Applications and Its Technological Facets

View full text Add to dashboard Cite

The use of metallic biomaterials for replacement of biomedical implants has been traced back from the nineteenth century. These metallic biomaterials have been declared as clinical success as their mechanical properties that satisfy the prerequisite of the human bone. Nevertheless, critical issues of the materials when they are utilised as implants; including the releasing toxic and harmful metal ions through wear and corrosion processes after longer implantation. Besides that, the bonding strength between bone and implants itself is considered weak due to the diferent components of human bone and metal implants. Hence, developing hydroxyapatite (HAp) coating on metallic biomaterials is expected to overcome the problems faced by biocompatible metallic biomaterials. As far as this, various commercial techniques have been introduced to develop the HAp coating on metallic biomaterials. The techniques are including plasma-spraying method, sol-gel dip-coating, electrochemical deposition and high-velocity suspension plasma-spraying. The formation of HAp coating on metallic biomaterials improved the corrosion resistance together promoting its load-bearing ability and enhanced substrate-coating adhesion.

show abstract

Section: Plasma-spraying Techniquementioning

confidence: 99%

Hydroxyapatite-Based Coating on Biomedical Implant

Harun¹,

Asri²,

Sulong³

et al. 2018

Hydroxyapatite - Advances in Composite Nanomaterials, Biomedical Applications and Its Technological Facets

View full text Add to dashboard Cite

show abstract

“…It is known that the interaction of the high temperature droplets formed in the plasma, and subsequent rapid cooling on interaction with the cold substrates, leads to thermal decomposition. This causes the introduction of undesirable thermal decomposition products [7], such as TCP, TTCP, and sometimes calcium oxide. In addition it leads to a reduction in crystallinity [8].…”

Section: Introductionmentioning

confidence: 99%

In-vitro Investigation of Air Plasma-Sprayed Hydroxyapatite Coatings by Diffraction Techniques

Venter

Heimann

Topić

et al. 2016

Residual Stresses 2016

View full text Add to dashboard Cite

Abstract. The influence exposure to simulated body fluid (SBF) has on plasma-sprayed hydroxyapatite (HAp) coatings of medical-grade Ti6Al4V rods was investigated by quantifying the depth dependence of the phase composition and residual stress through the coating thickness using diffraction techniques. Chemical phase identification showed HAp existing together with its thermal decomposition products, tetra-calcium phosphate (TTCP), tri-calcium phosphate (TCP) and calcium oxide. With depth, the HAp content decreases with a corresponding increase in TTCP. The near surface stress condition comprised ~50 ± 10 MPa hoop stress with the radial stress being close to zero. With depth the hoop stress decreases linearly to ~-50 ± 25 MPa at the substrate interface, whilst the radial stress increases with depth. Upon exposure to SBF, the coating composition reveals an increase in HAp from ~80.0 ± 0.5 to ~86.0 ± 0.5 wt%, accompanied by a decrease of TTCP from ~10 ± 2 to ~6 ± 2 wt% wt%. A change in stress state occurred within the first day of incubation; where after, with further exposure time the stress state converted back to values similar to that of the assprayed condition.

show abstract

“…They are useful method for making thin films of functional biomaterials. A considerable amount of researches has been devoted to develop techniques for coating HA on titanium (Long & Rack, 1998) such as plasma spraying (Yang, 1995;Weng et al,1995), dipping (Li et al, 1996), electro-codeposition (Dasarathy et al, 1996), PLD (Cotell, 1994), sputtering (Yang et al, 2005) and sol-gel-derived coating (Carradò & Viart, 2010). Moreover, PLD (Pelletier et al, 2011) and MS can make thin TiN coatings, favourable for high fatigue resistance.…”

Section: Introductionmentioning

confidence: 99%