Impact of annealing on features of BCP coating on NiTi shape memory alloy: Preparation and physicochemical characterization

被引：18

作者：

Dulski, Mateusz ^{[1
,2
]}

Dudek, Karolina ^{[1
,2
,3
]}

Grelowski, Michal ^{[2
,4
]}

Kubacki, Jerzy ^{[2
,4
]}

Hertlein, Justyna ^{[5
]}

Wojtyniak, Marcin ^{[2
,4
]}

Goryczka, Tomasz ^{[1
,2
]}

机构：

[1] Univ Silesia Katowice, Inst Mat Sci, 75 Pulku Piechoty 1a, PL-41500 Chorzow, Poland

[2] Silesian Ctr Educ & Interdisciplinary Res, 75 Pulku Piechoty 1a, PL-41500 Chorzow, Poland

[3] Inst Ceram & Bldg Mat, Refractory Mat Div Gliwice, Toszecka 99, PL-44100 Gliwice, Poland

[4] Univ Silesia Katowice, A Chelkowski Inst Phys, Uniwersytecka 4, PL-40007 Katowice, Poland

[5] PAN, Polish Acad Sci, CMPW, Ctr Polymer & Carbon Mat, M Curie Sklodowskiej 34, PL-41819 Zabrze, Poland

来源：

APPLIED SURFACE SCIENCE | 2018年 / 437卷

关键词：

Hydroxyapatite; Tricalcium phosphate; NiTi shape memory alloy; Surface science; Surface and interfaces; Electrophoretic deposition; Hybrid composite; Annealing; Surface modifiaction; CALCIUM-PHOSPHATE CERAMICS; ELECTROPHORETIC DEPOSITION; HYDROXYAPATITE COATINGS; SURFACE MODIFICATIONS; MECHANICAL-PROPERTIES; TITANIUM; BIOCERAMICS; OXIDES; XPS; BIOCOMPATIBILITY;

D O I：

10.1016/j.apsusc.2017.12.056

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A multifunctional composite structure consisting of resorbable tricalcium phosphate with non-resorbable hydroxyapatite and NiTi shape memory alloy (SMA) has been manufactured to develop a biocompatible system for long-term implant applications. The hybrid system has been vacuum sintered to consolidate and form chemical binding between phosphate biomaterials and NiTi SMA. In this context, the impact of sintering on biomaterial's features in relation to initial material has been analyzed using a combination of structural and surface sensitive approaches. Moreover, a partial decomposition of the NiTi parent phase to the equilibrium Ti2Ni with cubic structure, and non-equilibrium Ti3Ni4 with hexagonal structure has been detected. Moreover, a sintering has provided a reconstruction of the orthophosphate surface through the disintegration of calcium phosphate material and increase of hydroxyapatite with smaller particles in volume. The biomaterial surface has become more enriched in calcium in relation to the initial composition, with a simultaneous decline of the roughness parameters due to the gradual consolidation of orthophosphates. Finally, surface modification accompanied with heat treatment has led to an increase of surface Young's modulus as an effect of partial recrystallization of calcium phosphates. (c) 2017 Elsevier B.V. All rights reserved.

引用

页码：28 / 40

页数：13