反复熔铸对钯基烤瓷合金力学性能影响的研究  

Physical Properties of the Pd-based Ceramic Alloy after Recasting

作　　者：王颖卉[1] 杨松[1] 程辉[1] 李秀容[2] 吴维青[3] 郑明[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 [3]福州大学测试中心

出　　处：《口腔医学研究》2013年第2期132-134,共3页Journal of Oral Science Research

基　　金：福建省科技攻关重点基金资助项目(2010Y0024);福建医科大学附属口腔医院发展学科建设基金资助项目([2008]39号)

摘　　要：目的:探讨反复熔铸对钯基烤瓷合金力学性能的影响。方法:钯基烤瓷合金在不添加新合金的情况下,经过1～3次单纯反复熔铸后,用拉伸实验对各代试件的拉伸强度、0.2%屈服强度、延伸率进行比较;用弯曲实验对各代试件的弯曲强度、弯曲模量进行比较;用硬度实验对各代试件的维氏硬度值进行比较。结果:经不同次数熔铸的钯基烤瓷合金试件的拉伸强度、0.2%屈服强度、延伸率和显微硬度的差别无统计学意义;各代试件的弯曲强度随着熔铸次数的增加而下降(P<0.05)。结论:钯基烤瓷合金经1～3次单纯反复熔铸后,拉伸性能、显微硬度未发生下降,但弯曲性能发生下降。Objective： To investigate the mechanical properties of the Pd- based ceramic alloy after recasting. Methods： Pd-based ceramic alloy samples were prepared and recast for 1-3 times without adding any new Pd- based ceramic alloy. The tensile strength, 0.2 % yield strength, percentage of elongation, flexural strength, flexur- al modulus and Vickers hardness of each specimen were measured. Results： No significant decrease was found on the tensile strength, 0.2% yield strength, elongation and microhardness of the Pd-based ceramic alloys that had been cast for 2 or 3 times, when compared with that of the alloy cast for just 1 time. However, the flexural strength, flexural modulus of the Pd-based alloys recast for 2 or 3 times were significantly lower than that of the alloys cast for 1 time （P〈0.05）. Conclusion： Recasting might cause decreases in flexural properties of the Pd-based ceramicalloy.

关 键 词：钯基烤瓷合金 反复熔铸 力学性能 

分 类 号：R783.1[医药卫生—口腔医学]