结合剂含量对铸钛包埋料性能的影响研究

发布时间：2018-05-21 09:48

本文选题：钛 + 包埋料　；参考：《中国陶瓷》2014年10期

【摘要】：研究了结合剂含量对纯钛铸造性能的影响,探讨了自制铸钛包埋料应用于临床的前景。测试了不同结合剂含量的包埋料的抗压强度和热膨胀性能,采用X射线衍射测试包埋料的相结构,采用SEM+EDS对铸件表面反应层组成和成分进行分析。实验结果表明:添加结合剂后包埋料的抗压强度和热膨胀率显著增加,结合剂含量为2.5 wt%时包埋料的抗压强度最高,达到9.91 MPa;此时包埋料的热膨胀率达到1.92%,可有效补偿钛在铸造过程中的固化收缩。X射线衍射结果表明:钛包埋料的主晶相为MgO。SEM和EDS的实验结果显示铸件表面反应层厚度较薄,为20μm。通过调整结合剂的含量,同时提高了氧化镁系包埋料的热膨胀率和抗压强度。本论文所采用的包埋料铸出的钛铸件表面反应层薄,表面较光洁,基本无粘砂,具有一定的临床应用前景。
[Abstract]:The effect of binder content on casting properties of pure titanium was studied. The compressive strength and thermal expansion properties of different binder contents were tested. The phase structure of the burying material was measured by X-ray diffraction and the composition and composition of the reaction layer on the surface of castings were analyzed by SEM EDS. The experimental results show that the compressive strength and thermal expansion ratio of the burying material increased significantly after the addition of binder, and the compressive strength of the burying material was the highest when the binder content was 2.5 wt%. The results of X-ray diffraction show that the main crystal phase of titanium embedded material is MgO.SEM and EDS. The experimental results show that the thickness of the surface reaction layer of the castings is thin, which is 20 渭 m, and the thermal expansion rate of the embedded material is 1.92 MPA, which can effectively compensate the solidification shrinkage of titanium in the casting process. The results of X-ray diffraction show that the main crystal phase of the titanium embedded material is MgO.SEM and EDS. By adjusting the content of the binder, the thermal expansion rate and compressive strength of the magnesia system were increased. The surface of titanium castings cast by the embedded material in this paper has a thin surface reaction layer, a smooth surface, basically no sand, and has a certain clinical application prospect.
【作者单位】：山西西京医疗设备有限责任公司;中国矿业大学材料学院;山西美原齿科器械有限责任公司;第四军医大学附属口腔医院;
【基金】：国家自然科学基金项目(81100789) 浙江省中医药青年课题研究计划(2008YA023) 浙江省教育厅科研项目(ZC200803873)
【分类号】：R783.1

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