华西口腔医学杂志

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纯钛冠桥铸造包埋料对铸件反应层的影响

杨瑟飞1 王有序2 郭天文3 刘洪臣1   

  1. 中国人民解放军总医院口腔科;西北工业大学凝固技术实验室;第四军医大学口腔医院修复科;
  • 收稿日期:2009-04-25 修回日期:2009-04-25 出版日期:2009-04-20 发布日期:2009-04-20
  • 通讯作者: 杨瑟飞,Tel:13911597831
  • 作者简介:杨瑟飞(1975-),男,河北人,主治医师,博士

Effect of investment for titanium crown and bridge on reactive layer of castings

YANG Se -fei1, WANG You-xu2, GUO Tian-wen3, LIU Hong-chen1   

  1. 1. Dept. of Stomatology, The Chinese PLA General Hospital, Beijing 100853, China;2. State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi′an 710072, China;3. Dept. of Prosthodontics, College of Stomatology, The Fourth Military Medical University,Xi′an 710032, China
  • Received:2009-04-25 Revised:2009-04-25 Online:2009-04-20 Published:2009-04-20
  • Contact: YANG Se -fei,Tel:13911597831

摘要:

目的探讨自行研制包埋材料(FUS-invest)中各组分对纯钛铸件反应层的影响。方法使用FUS-invest包埋并铸造10 mm×10 mm×1 mm的纯钛试样3片,观察反应层的金相,对反应层进行X射线衍射(XRD)及扫描电镜能谱分析(EDS),测量显微维氏硬度。结果反应层的金相主要为粗大的片状α晶内结构,显微维氏硬度值在距表面105 μm后较为恒定,范围为243~314 MPa。XRD显示反应层中除了钛基体外,主要由ZrO2、SiO2、Mg2TiO4及TiO2组成。EDS检测到的元素除了钛元素外,主要为Al、Si、Zr和Cl。结论使用FUS-invest包埋材料铸造的纯钛铸件产生的反应层较薄,金相结构没有显著改变,适合作为纯钛铸造的专用包埋材料。

关键词: 纯钛, 铸造, 包埋料, 反应层

Abstract:

Objective To investigate the effect of self-developing investment(FUS-invest) on the reactive layer of titanium castings. Methods Three 10 mm×10 mm×1 mm pure titanium castings were founded using FUS-invest. Metallographical structure of reactive layer was observed. X-ray diffraction(XRD) and scanning electron microscope with energy-dispersive spectrum(EDS) were used to analyze the status of composition of the casting surface. Micro-Vickers hardness was measured. Results The metallograph indicated that the reactive layer was composed of coare flakeshaped α phase of grains. The value of micro-Vickers hardness with the range 243 to 314 MPa had not significantly difference under the depth of 105 μm beneath the surface. The XRD pattern clearly showed the peaks of ZrO2, SiO2, Mg2TiO4 and TiO2. EDS analysis demonstrated that the main elements were Al, Si, Zr and Cl. Conclusion FUS-invest is suited for pure titanium casting because of the thin reactive layer and less change to metallographical structure.

Key words: pure titanium, casting, investment, reactive layer