Thermal stability of nanocrystalline gold prepared by gas deposition method

被引：31

作者：

Okuda, S

Tang, F

机构：

[1] Institute of Materials Science, University of Tsukuba, Tsukuba, Ibaraki

来源：

NANOSTRUCTURED MATERIALS | 1995年 / 6卷 / 5-8期

关键词：

D O I：

10.1016/0965-9773(95)00126-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Effects of annealing on Vickers microhardness, density, grain size and electrical resistance were studied on nanocrystalline Au specimens prepared by the gas deposition method. During annealing, grain growth was not detected up to the annealing at 900K for 1 min. Most prominent was a change in microhardness, it increased gradually, reached a maximum after the 900K annealing and then decreased rapidly after higher temperature annealings The maximum hardness attained in one specimen was about 10 times higher than that of coarse-grained Au. This suggests that the grains are perfect crystals or contain only dislocations which can not contribute to deformation. On the other hand high thermal stability of the present specimens would be attributed to the high density of pores containing He gas.

引用

页码：585 / 588

页数：4

共 14 条

[1]

BIRRINGER R, 1988, ADV MATERIALS SCI EN, P339

[2]

Eastman J. A., 1992, Nanostructured Materials, V1, P465, DOI 10.1016/0965-9773(92)90079-D

[3] NARROWING OF THE PALLADIUM-HYDROGEN MISCIBILITY GAP IN NANOCRYSTALLINE PALLADIUM [J].

EASTMAN, JA ;

THOMPSON, LJ ;

KESTEL, BJ .

PHYSICAL REVIEW B, 1993, 48 (01) :84-92

[4] On the hardening and softening of nanocrystalline materials [J].

Fougere, G.E. ;

Weertman, J.R. ;

Siegel, R.W. .

Nanostructured Materials, 1993, 3 (1-6)

[5]

HAYASHI C, 1985, JPN J APPL PHYS, V124, pL702

[6] ATOMIC-STRUCTURE AND THERMAL-STABILITY OF NANOCRYSTALLINE SILVER [J].

KIZUKA, T ;

ICHINOSE, H ;

ISHIDA, Y .

JOURNAL OF THE JAPAN INSTITUTE OF METALS, 1991, 55 (03) :233-240

[7]

Kobelev N. P., 1993, Nanostructured Materials, V2, P537, DOI 10.1016/0965-9773(93)90171-7

[8] MICROHARDNESS OF NANOCRYSTALLINE PALLADIUM AND COPPER PRODUCED BY INERT-GAS CONDENSATION [J].

NIEMAN, GW ;

WEERTMAN, JR ;

SIEGEL, RW .

SCRIPTA METALLURGICA, 1989, 23 (12) :2013-2018

[9] MECHANICAL-BEHAVIOR OF NANOCRYSTALLINE CU AND PD [J].

NIEMAN, GW ;

WEERTMAN, JR ;

SIEGEL, RW .

JOURNAL OF MATERIALS RESEARCH, 1991, 6 (05) :1012-1027

[10]

ODA M, 1990, P ACTA MET C MAT ULT, P12

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