不同抛光方法对钴铬合金铸件表面质量及物理性能的影响  

Effects of different polishing methods on surface qualities and physical properties of cobalt-chromium castings

作　　者：张小红[1] 王雪[2] 董文玉[1] 

机构地区：[1]苏州大学医学院附属第一医院口腔科,苏州215006 [2]青岛大学医学院附属医院口腔科,青岛266071

出　　处：《口腔医学》2007年第12期636-638,共3页Stomatology

摘　　要：目的研究不同抛光方法对钴铬合金铸件表面质量及物理性能的影响。方法采用5种抛光方法抛光钴铬合金板试样,测量其表面粗糙度、硬度、弯曲强度、断裂强度和弹性模量,并对数据进行统计学分析。结果打磨后光整组试样表面粗糙度值最小(P<0.01);打磨后光整组试样的硬度较未抛光组要高(P<0.05);不同抛光方法抛光试样的弯曲强度,断裂强度与弹性模量无统计学差异。结论手工打磨后再进行光整的铸件表面粗糙度值最低,表面硬度增高;抛光方法对铸件物理性能无影响。Objective To evaluate the effects of different polishing methods on surface qualifies and physical properties of cobalt-chromium castings.Methods Cobalt-chromium alloy specimens were polished by 5 polishing methods and measured by surface roughness, hardness, flexural strength, fracture strength and flexural modulus test. Results Specimens polished by grinding ＋ centrifugal barrel polishing got the smoothest surface（ P 〈 0.01 ）and highest hardness（ P 〈 0.05）. There is no difference about flexural strength,fracture strength and flexural modulns among groups（ P 〉 0.05）. Conclusion Castings polished by grinding ＋ centrifugal barrel polishing could get the smoothest surface and highest surface hardness. The physical properties of castings wouldn＇ t change after being polished.

关 键 词：钴铬合金 抛光方法 表面粗糙度 物理性能 

分 类 号：R783.2[医药卫生—口腔医学]