Influences of thermal treatment temperature on microstructures and properties of glass-ceramics from gold tailings

2021 ◽  
Vol 579 (1) ◽  
pp. 23-32
Author(s):  
Weiqian Chen ◽  
Yuhong Li ◽  
Peiqing La ◽  
Yangquan Xue ◽  
Zengpeng Li ◽  
...  
2019 ◽  
Vol 798 ◽  
pp. 229-234 ◽  
Author(s):  
Puripat Kantha ◽  
Naris Barnthip ◽  
Kamonpan Pengpat ◽  
Tawee Tunkasiri ◽  
Nuttapon Pisitpipathsin

In this work, the thermal treatment temperature effect on phase formation and bioactivity of glass-ceramics based on the SiO2-Na2O-CaO-P2O5 system has been studied. The chemical composition of the system is 45 wt.% SiO2, 24.5 wt.% Na2O, 24.5 wt.% CaO and 6 wt.% P2O5 (45S5). The rice husk ash is used as the natural raw materials instead of commercial SiO2. All of the investigated compositions were prepared by melting the glass mixtures at 1350°C for 3 h. The resulting glass samples were heated at different thermal treatment temperatures ranging from 750 to 1050°C with fixed dwell-time for 4 h for crystallization. Phase identification of the 45S5 glass ceramics was carried out by X-Ray diffraction (XRD). Moreover, the physical properties such as density, porosity and mechanical properties were systematically investigated. It was found that, the increasing of heat treatment temperature led to the increasing of the Na2Ca2Si3O9 phase and obtaining better bioactive behavior after incubation of glass-ceramics in simulated body fluid (SBF) for 7 days. The maximum hardness value of 4.02 GPa was achieved after heating at 1050°C for 4 h. However, the density value has slightly changed with various heat treatment temperatures.


2018 ◽  
Vol 32 (10) ◽  
pp. 10605-10615 ◽  
Author(s):  
Haoran Zhu ◽  
Chuanxian Li ◽  
Fei Yang ◽  
Hongye Liu ◽  
Dinghong Liu ◽  
...  

2006 ◽  
Vol 116 (4) ◽  
pp. 498-504 ◽  
Author(s):  
María C. Barrera ◽  
José Escobar ◽  
José A. de los Reyes ◽  
María A. Cortés ◽  
Margarita Viniegra ◽  
...  

2018 ◽  
Vol 97 (2) ◽  
pp. 40-44 ◽  
Author(s):  
Ayumi IWAMOTO ◽  
Shohei MATSUO ◽  
Yukinori MIYAMOTO ◽  
Yasuhiro SAITO ◽  
Yohsuke MATSUSHITA ◽  
...  

2016 ◽  
Vol 36 (4) ◽  
pp. 421-430
Author(s):  
Ching-Wen Lou ◽  
Po-Ching Lu ◽  
Jin-Jia Hu ◽  
Jia-Horng Lin

Abstract Textile techniques can be applied to create two-dimensional or three-dimensional tubular fabrics. Three-dimensional tubular knits can be used in many fields, such as for medical textiles, conductive textile, composites, and tissue engineering. This study aimed to examine the effects of different yarn types on various fabrics and of different temperatures on the variations in the properties of textiles. Four types of wrapped yarn (P150, P75, S140, and S70) were made into tubular braids and knits, after which the products were thermally treated at various temperatures (120°C, 140°C, and 160°C). A shrinkage measurement, a porosity test, a braid angle test, and a tensile test were performed to evaluate the tubular braids and knits. The test results indicated that the thermal treatment temperature did not affect the porosity of the tubular braids and tubular knits. The porosity of the tubular braids was between 40.32% and 48.27%, while that of the tubular knits was between 10.15% and 35.57%. In addition, the tensile strength of both fabric types increased by 40–50%, while their displacement increased by 200–250%. In the future, the efficacy of tubular braids and tubular knits for use as vascular grafts will be examined.


Sign in / Sign up

Export Citation Format

Share Document