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

页码：121 / 126

页数：6

共 16 条

[1] SNOEK RELAXATION PEAKS IN SOLID SOLUTIONS OF NIOBIUM [J].

AHMAD, MS ;

SZKOPIAK, ZC .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1970, 31 (08) :1799-&

[2] MECHANICAL MULTIPLE RELAXATION SPECTRA IN NB-ZR-O ALLOYS [J].

BOTTA, WJ ;

FLORENCIO, O ;

GRANDINI, CR ;

TEJIMA, H ;

JORDAO, JAR .

ACTA METALLURGICA ET MATERIALIA, 1990, 38 (03) :391-396

[3]

BOTTA WJ, 1985, THESIS OXFORD U

[4] EFFECT OF ZIRCONIUM ON INTERNAL FRICTION IN COLUMBIUM [J].

BUNN, PM ;

CUMMINGS, DG ;

LEAVENWORTH, HW .

JOURNAL OF APPLIED PHYSICS, 1962, 33 (10) :3009-&

[5] Effect of interstitial impurities on internal friction measurements in niobium [J].

Florêncio, O ;

Grandini, CR ;

Botta, FWJ ;

Guedes, PR ;

Silva, PS .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2004, 370 (1-2) :131-134

[6]

FLORENCIO O, 1985, J PHYS, V46, pC10

[7]

FLORENCIO O, 1996, J PHYS IV, V6, pC8

[8]

Florêncio Odila, 2003, Mat. Res., V6, P541, DOI 10.1590/S1516-14392003000400020

[9]

HASSON DF, 1972, TREATISE MAT SCI

[10]

JORDAO JAR, 1982, THESIS U SAO PAULO

← 1 2 →