Spark plasma sintering, mechanical and in-vitro behavior of a novel Sr- and Mg-containing bioactive glass for biomedical applications

被引：6

作者：

Angioni, Damiano ^{[1
]}

Orru, Roberto ^{[1
]}

Cao, Giacomo ^{[1
]}

Garroni, Sebastiano ^{[2
]}

Iacomini, Antonio ^{[2
]}

Bellucci, Devis ^{[3
]}

Cannillo, Valeria ^{[3
]}

机构：

[1] Univ Cagliari, Unita Ric Consorzio Interuniv Nazl Sci & Tecnol M, Dipartimento Ingn Meccan Chim & Mat, Via Marengo 2, I-09123 Cagliari, Italy

[2] Univ Sassari, Dipartimento Chim & Farm, Via Vienna 2, I-07100 Sassari, Italy

[3] Univ Modena & Reggio Emilia, Dipartimento Ingn Enzo Ferrari, Via P Vivarelli 10, I-41125 Modena, Italy

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2022年 / 42卷 / 04期

关键词：

Bioactive glasses; Spark plasma sintering; Rietveld method; Mechanical properties; In-vitro tests; CRYSTALLIZATION; SCAFFOLDS; BIOGLASS; 45S5; HYDROXYAPATITE; MAGNESIUM; STRONTIUM;

D O I：

10.1016/j.jeurceramsoc.2021.11.061

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 so-called BGMS10, a bioactive glass containing 10 mol.% SrO and 10 mol.% MgO, displays a low inclination to crystallize, as confirmed by its high activation energy (538.9 kJ/mol). Such peculiar aspect and the beneficial use of SPS allow for the obtainment of 99.7 % dense and fully amorphous products at 750 degrees C. The incipient crystallization in the glass is observed when temperature is increased to 850 degrees C, while 95 wt. % crystallized ceramics are produced at 950 degrees C. Main crystalline phases are alpha- and beta-CaSiO3, with grain size of 89 and 97 nm, respectively. Glass crystallization is accompanied by Young's modulus increase from 90.92 to 98.38 GPa. On the other hand, partially crystallized samples (850 degrees C) exhibit higher Vickers hardness (718.8) compared to fully crystallized ones (619.8), which show lower density (98.6 %). In-vitro tests in SBF indicate that the silica-gel film preceding apatite nucleation is mostly formed on the amorphous substrate region.

引用

页码：1776 / 1783

页数：8