反复熔铸对纯钛烤瓷合金力学性能的影响  

Study of the mechanical properties of CP Ti ceramic alloy after recasts

作　　者：杨松[1] 程辉[1] 李秀容[2] 吴维青[3] 郑明[1] 王颖卉[1] 

机构地区：[1]福建医科大学附属口腔医院修复科,福建福州350002 [2]福建医科大学附属口腔医院技工中心,福建福州350002 [3]福州大学测试中心,福建福州350002

出　　处：《上海口腔医学》2014年第6期651-653,共3页Shanghai Journal of Stomatology

基　　金：国家自然科学基金(81371174);福建省自然科学基金(2012J01345);福建省科技厅产学研重大项目(2011Y4001)~~

摘　　要：目的 ：探讨反复熔铸对纯钛烤瓷合金力学性能的影响。方法 ：纯钛经过1-3次单纯反复熔铸后,采用拉伸实验、弯曲实验、硬度实验对各代试件的力学性能进行测试。采用SPSS13.0软件包对数据进行统计学分析。结果：经不同次数熔铸的纯钛烤瓷合金试件,其弯曲强度无显著差异。经过2次、3次熔铸的纯钛烤瓷合金试件,其弯曲模量较1次熔铸的纯钛烤瓷合金显著升高（P〈0.05）。拉伸强度、0.2%屈服强度随着熔铸次数的增加而升高（P〈0.05）。经过3次熔铸的纯钛烤瓷合金试件,其延伸率较经过1次、2次熔铸的纯钛烤瓷合金显著降低（P〈0.05）。经过3次熔铸的纯钛烤瓷合金试件,其显微硬度较经过1次、2次熔铸的纯钛烤瓷合金显著升高（P〈0.05）。结论：纯钛烤瓷合金经1~3次单纯反复熔铸后,弯曲性能、显微硬度未下降,但拉伸性能下降。PURPOSE： To investigate the influences of repeated casting on the mechanical properties of CP Ti ceramic alloy. METHODS： CP Ti ceramic alloy samples were prepared and recast 3 times without adding any new CP Ti ceramic alloy. The physical properties of each specimen were measured. SPPPSS13.0 software package was used for statistical analysis. RESULTS： No significant difference was found on the flexural strength of the CP Ti ceramic alloys that had been cast 2 or 3 times, compared with that of the alloys being cast only 1 time （P〉0.05）. However, the flexural modulus, tensile strength, 0.2% yield strength and surface microhardness of the CP Ti alloys being cast 2 or 3 times were significantly higher than those of the alloys being cast only 1 time （P〈0.05）. Elongation of the CP Ti alloys being cast 2 or 3 times was significantly lower than that of the alloys being cast only 1 time （P〈0.05）. CONCLUSIONS： Recasting may cause decreases in tensile properties of CP Ti ceramic alloy.

关 键 词：纯钛烤瓷合金 反复熔铸 力学性能 

分 类 号：R783.1[医药卫生—口腔医学]