Riaz Madeeha, Zia Rehana, Mirza Ambreen, Hussain Tousif, Bashir Farooq, Anjum Safia
Physics Department, Lahore College for Women University, Lahore, Pakistan.
Physics Department, Lahore College for Women University, Lahore, Pakistan.
Mater Sci Eng C Mater Biol Appl. 2017 Jun 1;75:872-876. doi: 10.1016/j.msec.2017.02.141. Epub 2017 Feb 27.
This paper reports the fabrication and characterization of silicate glass-ceramics doped with (0-12mol%) CaF. TGA-DSC analysis was carried out to determine the crystallization temperature and stability of glass measured by two glass parameters; Hruby parameter K=(T-T)/(T-T) and Weinberg parameter K=(T-T)/T. It was found that with CaF doping improved sinterability at low temperature and provided stability to the glass. The XRD pattern exhibits a single phase of combeite and doping of CaF cause increase in crystallite size. Microstructure of samples was also improved with CaF addition, pores were significantly reduced. After 15days immersion in simulated body fluid all samples developed apatite layer onto its surface. Hence, the addition of CaF provided bioactive glass-ceramic material having a low processing temperature.
本文报道了掺杂（0-12mol%）CaF的硅酸盐微晶玻璃的制备与表征。通过热重-差示扫描量热分析（TGA-DSC）来确定玻璃的结晶温度和稳定性，这是通过两个玻璃参数来衡量的；鲁比参数K =(T - T)/(T - T)和温伯格参数K =(T - T)/T。结果发现，掺杂CaF可提高低温下的烧结性，并赋予玻璃稳定性。X射线衍射（XRD）图谱显示为单斜硅钙石相，CaF的掺杂导致微晶尺寸增加。添加CaF后样品的微观结构也得到改善，孔隙显著减少。在模拟体液中浸泡15天后，所有样品表面都形成了磷灰石层。因此，CaF的添加提供了一种具有低加工温度的生物活性微晶玻璃材料。
