二氧化锆含量对钛铸件气孔率的影响  

Effects of ZrO_2 Content on Porosity Rate in Ti Alloy Castings

作　　者：尹路 陈晓玲 

机构地区：[1]厦门市口腔医院修复科

出　　处：《特种铸造及有色合金》2011年第10期904-906,共3页Special Casting & Nonferrous Alloys

基　　金：福建省自然科学基金青年创新项目(2009D013);厦门杰出青年创新项目(3502Z20105010)

摘　　要：分别用ZrO2含量为20%、30%、40%的磷酸盐高温包埋材包埋铸造纯钛试样,对照组用MT-3专用铸钛包埋材;铸造后进行X线探伤,扫描电镜和EDS能谱分析。通过X射线探伤技术与扫描电镜对钛铸件性能检测,确定ZrO2与磷酸盐包埋材料的最佳配比。结果发现,ZrO2含量为20%的磷酸盐高温包埋材试样孔隙较多,孔隙含量与对照组有显著性差异,ZrO2含量为30%和40%组试样孔隙含量与对照组无显著性差异。扫描电镜和能谱分析结果显示,ZrO2含量为20%的试样反应层最厚,ZrO2含量为30%和40%的试样反应层较薄,对照组试件反应层最薄。含30%的ZrO2的磷酸盐包埋材料具有较好的性能。The pure Ti castings were produced with high temperature phosphate investment materials containing 20%,30% and 40% ZrO2,respectively,by investment casting,and compared pure Ti castings was produced with special MT-3 investment materials. The optimized proportion between ZrO2 content and phosphate investment materials was presented through examining the properties of Ti castings by the XRD（X-ray diffraction） and SEM（scanning electron microscope） ,EDS（energy dispersive spectrometer） . The results show that there exists a lot of porosity in castings produced with high temperature phosphate investment materials containing 20% ZrO2,and porosity rate exhibits significant difference with the compared castings,while significant difference in porosity rates in the casting produced with investment materials containing 30% and 40% ZrO2 can not be observed with the compared castings. In addition,the reactive layer on the castings produced with 20% ZrO2 is the thickest,and then castings produced with 30% and 40% ZrO2,and the reactive layer of the casting produced with the special MT-3 investment casting is the thinnest. The phosphate investment casting with 30% ZrO2 exhibits acceptable properties.

关 键 词：ZRO2 纯钛 包埋材料 X线探伤 反应层 

分 类 号：TG292[金属学及工艺—铸造]