Influence of oxygen on the damping properties of Nb-Zr alloys

被引：3
|
作者：
Florencio, O. [1 ]
Silva, P. S., Jr.
Stefanini, T. F.
Botta F, W. J.
机构：
[1] Univ Fed Sao Carlos, Dept Fis, BR-13565905 Sao Carlos, SP, Brazil
[2] Univ Fed Sao Carlos, Dept Mat Engn, BR-13565905 Sao Carlos, SP, Brazil
来源：
HIGH DAMPING MATERIALS II | 2006年 / 319卷
关键词：
internal friction; Nb-Zr alloys; oxygen Snoek peak; nitrogen Snoek peak;
D O I：
10.4028/www.scientific.net/KEM.319.121
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Nb-1 wt% Zr polycrystalline and single crystalline samples were submitted to annealing, at pressure of 2.5 x 10(-8) Torr and subsequently annealed in an oxygen atmosphere for three hours, in a temperature of 1170 K in oxygen at partial pressure of 5 x 10(-5) Torr. Internal friction measurements as a function of temperature were performed between 300 K and 650 K, using a torsion pendulum inverted Ke-type operating in a frequency oscillation in the hertz bandwidth. Three internal friction peaks, which were assigned as Nb-O, Zr-O and Nb-N peaks were observed in oxidized single crystal sample and the relaxation parameters of the three peaks were obtained.
引用
收藏
页码：121 / 126
页数：6
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