CAJ | 학술논문

研究了纯钛支架包埋料中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。测试不同结合剂含量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，将自制包埋料与德国某铸钛支架包埋料所铸造的纯钛试样同时进行SEM和EDS分析。X射线衍射结果表明，钛包埋料的主晶相为MgO。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7.5wt.%时，包埋料的综合性能最优，其中抗压强度最高，达到8.61 MPa，热膨胀率为1.81%，可有效补偿钛在铸造过程中的固化收缩。自制包埋料所铸造的铸件表面较光洁，基本无粘砂，反应层厚度较薄，为10μm，远低于德国磷酸盐系铸钛支架包埋料所铸造的纯钛试样(约110μm)。
연구료순태지가포매료중결합제함량대순태주조성능적영향，탐토료자제주태포매료응용우림상적전경。측시불동결합제함량포매료적항압강도화열팽창성능，채용X사선연사측시포매료적상결구，장자제포매료여덕국모주태지가포매료소주조적순태시양동시진행SEM화EDS분석。X사선연사결과표명，태포매료적주정상위MgO。첨가결합제후포매료적항압강도화열팽창솔현저증가，결합제함량위7.5wt.%시，포매료적종합성능최우，기중항압강도최고，체도8.61 MPa，열팽창솔위1.81%，가유효보상태재주조과정중적고화수축。자제포매료소주조적주건표면교광길，기본무점사，반응층후도교박，위10μm，원저우덕국린산염계주태지가포매료소주조적순태시양(약110μm)。
The effects of the adhesive agent content on the properties of the investment for casting titanium were studied. The compressive strength and thermal expansion ratio of the investment with different adhesive agent content were investigated. The morphology and composition of the reaction layer on the titanium casting’s surface were observed by SEM and EDS. The phase composition of the investment was studied by X-ray diffraction. The compressive strength and thermal expansion ratio of the investment were signiifcantly improved by adding the adhesive agent. The highest compressive strength of the investment was 8.61 MPa when the adhesive agent content was 7.5wt.%. The corresponding thermal expansion ratio was 1.81%, which could compensate the shrinkage of titanium in the casting process. The thickness of the surface reaction layer of the titanium cast by the investment was 10μm, which is much thinner than that of the titanium cast by a German commercial investment. Considering the compressive strength, thermal expansion ratio and surface reaction layer, the optimal adhesive agent content of the investment is 7.5wt.%.