不同环境对多次铸造钴铬合金机械性能的影响  

The influence on physical properties of recasting dental prosthetic cobalt-chromium alloy in different environment

作　　者：朱松[1] 于德珍[1] 赵华[1] 叶长丽[2] 

机构地区：[1]白求恩医科大学口腔医学院修复科,130041 [2]吉林省辽源市中心医院口腔科

出　　处：《现代口腔医学杂志》1998年第1期27-29,共3页Journal of Modern Stomatology

摘　　要：本实验通过比较氩气保护、空气环境、钴铬合金反复铸造三代试样的抗拉强度、伸长率、硬度等机械性能指标,结合相应的金相学检查、合金的内部气孔及非金属性夹杂物分析、化学成份分析,得出结论:氢气保护的铸造合金剩余材料,在不加入新合金的前提下,至少可用至第三代而不影响其主要的机械性能,而空气环境铸造合金的剩余材料,至多可用至第二代,否则将影响修复体的质量。The purpose of this investigation was to determine the effect of recasting on physical properties of a cobalt - chromium alloy in argon protection or air environment. The physical properties include tensile strength,elongation and hardness. Comparison of the metallographic evaluation of porosity defects,non - metal inclusions,grain structure and changed composition, we can draw the following conclusions. Without the addition of any new alloy,the alloy remelted in argon can be reused for at least three generations. The alloy recasted in air can be reused for at most two generations, otherwise it would affect the quality of restorations.

关 键 词：钴铬合金 铸造 机械性能 牙科材料 

分 类 号：R783.1[医药卫生—口腔医学] R783.2[医药卫生—临床医学]