Influence of substrate metal alloy type on the properties of hydroxyapatite coatings deposited using a novel ambient temperature deposition technique

摘要: Hydroxyapatite (HA) coatings are applied widely to enhance the level of osteointegration onto orthopedic implants. Atmospheric plasma spray (APS) is typically used for deposition these coatings; however, HA crystalline changes regularly occur during this high-thermal process. This article reports on evaluation a novel low-temperature (<47°C) technique, called CoBlast, application coatings. To-date, CoBlast technique have been limited titanium alloy substrates. study addresses suitability number alternative metal alloys utilized in fabrication devices. In addition grade 5, both cobalt chromium and stainless steel 316 were investigated. study, deposited using sprayed techniques, resultant coating substrate properties evaluated compared. The CoBlast-deposited found present similar surface morphologies, interfacial properties, composition irrespective type. Coating thickness however displayed some variation with alloy, ranging from 2.0 3.0 μm. perhaps associated electronegativity alloys. APS-treated samples exhibited evidence coating, significantly, phase alterations two alloys; 5 chrome. Conversely, CoBlast-processed no substrates after depositions. APS attributed brief, but high-intensity temperatures experienced processing.