A New Alternative for Obtaining Nanocrystalline Bioactive Coatings: Study of Hydroxyapatite Deposition Mechanisms by Cold Gas Spraying

被引：35

作者：

Cinca, Nuria ^{[1
]}

Vilardell, Anna M. ^{[1
]}

Dosta, Sergi ^{[1
]}

Concustell, Amadeu ^{[1
]}

Garcia Cano, Irene ^{[1
]}

Maria Guilemany, Josep ^{[1
]}

Estrade, Sonia ^{[2
]}

Ruiz, Alicia ^{[2
]}

Peiro, Francesca ^{[2
]}

机构：

[1] Univ Barcelona, Thermal Spray Ctr CPT, Dept Ciencia Mat & Engn Met, C Marti & Franques 1, E-08028 Barcelona, Spain

[2] Univ Barcelona, Dept Elect, LENS MIND IN2UB, C Marti & Franques 1, E-08028 Barcelona, Spain

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2016年 / 99卷 / 04期

关键词：

ROOM-TEMPERATURE; AEROSOL DEPOSITION; BEHAVIOR; CERMET; MAPS;

D O I：

10.1111/jace.14076

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The present article is intended to study the deposition mechanisms of bioactive hydroxyapatite (HA) particles by means of Cold Gas Spraying (CGS). A comparison of the deposition on two different substrates (Ti6Al4V and Al7075T6) and different particle sizes is presented. Although this is a more specific deposition technique for ductile materials, it is here shown that, in certain conditions, ceramic deposition is possible despite the inherent low ductility. The resulting internal structure and the features at the particle-substrate interface are discussed in view of Transmission Electron Microscopy examinations of a Focused Ion Beam lift-out prepared sample. Mainly, under shock compressive loading, the porous sintered powder proceeds through pore collapse, fragmentation and densification as well as grain refinement. The process is described through different plastic mechanisms in ceramics. This opens a new alternative route to produce nanocrystalline HA coatings through a cost-effective process.

引用

页码：1420 / 1428

页数：9

共 38 条

[1] Room temperature impact consolidation (RTIC) of fine ceramic powder by aerosol deposition method and applications to microdevices [J].