口腔疾病防治2016，Vol.24Issue(6)：331-335,5.DOI:10.12016/j.issn.2096-1456.2016.06.003
热处理对含钛镍铬合金、镍铬合金金瓷结合强度的影响
The effect of heat treatment on bonding strength of ceramic to cast nickel-chromium-based alloys
摘要
Abstract
Objective To explore the effect of heat treatments on the metal⁃ceramic bonding strength in Ni⁃Cr⁃Ti al⁃loy and Ni⁃Cr alloy. Methods We evaluated the metal⁃ceramic bond strengths by using a three⁃points bending test ac⁃cording to ISO 9693. Meanwhile, we also observed the metal⁃ceramic interface through scanning electronic microscope (SEM) and energy dispersive spectrum (EDS). Results The mean value of bonding strengths of four groups were (38.04 ± 3.79) MPa (Ni⁃Cr⁃Ti, degassed), (32.17 ± 4.00) MPa (Ni⁃Cr⁃Ti, no heat treatment), (36.32 ± 7.41) MPa (Ni⁃Cr, de⁃gassed), (31.75 ± 2.77) MPa (Ni⁃Cr, no heat treatment). The statistic analysis showed that the mean bonding strengths were affected significantly by heat treatment method (P=0.001), but not alloy type (P=0.484). SEM and EDS demon⁃strated that the bonding surfaces of degassed specimens were compacted and had no cracks unlike those of specimens not receiving heat treatment. Conclusion According to the test results, the metal⁃ceramic bonding strengths of Ni⁃Cr⁃Ti alloy and Ni⁃Cr alloy are close to each other, and the bonding strengths of alloys can be heightened by heat treatment.关键词
烤瓷熔附金属/热处理/结合强度/金瓷界面特征/三点弯曲试验Key words
Porcelain fused metal/Heat treatment/Bonding strength/Metal-ceramic interfacial characteris-tic/Three-points bending test分类
医药卫生引用本文复制引用
林诗尧,刘朗,李洁银,温小姗,叶秀华,叶剑涛..热处理对含钛镍铬合金、镍铬合金金瓷结合强度的影响[J].口腔疾病防治,2016,24(6):331-335,5.基金项目
广州市科技计划项目 （）
