INFLUENCE OF OXIDATION AND OF H2-EXCHANGE GAS ON THE THERMAL-PROPERTIES OF SILICA AEROGELS

被引：3

作者：

BERNASCONI, A ^{[1
]}

SLEATOR, T ^{[1
]}

POSSELT, D ^{[1
]}

OTT, HR ^{[1
]}

机构：

[1] RISO NATL LAB,DK-4000 ROSKILDE,DENMARK

来源：

PHYSICA B | 1990年 / 165卷

关键词：

D O I：

10.1016/S0921-4526(09)80037-9

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We present an analysis of the effects of the oxidation and of adsorbed hydrogen on the specific heat and the thermal conductivity of a 0.145 g/cm3 base-catalysed aerogel at low temperatures (1.4 < T < 25 K). The results show distinct differences in the behaviour of the specific heat depending on the treatment of the sample and on the employed cooling procedure, but the thermal conductivity is not affected. © 1990, Elsevier Science Publishers B.V. (North-Holland). All rights reserved.

引用

页码：903 / 904

页数：2

共 5 条

[1]

BERNASCONI A, IN PRESS

[2] LOW-TEMPERATURE ENERGY EXCITATIONS AND THERMAL-PROPERTIES OF SILICA AEROGELS [J].

DEGOER, AM ;

CALEMCZUK, R ;

SALCE, B ;

BON, J ;

BONJOUR, E ;

MAYNARD, R .

PHYSICAL REVIEW B, 1989, 40 (12) :8327-8335

[3] THE LOW-TEMPERATURE HEAT CAPACITY AND THE RAMAN AND BRILLOUIN SPECTRA OF VITREOUS SILICA [J].

FLUBACHER, P ;

LEADBETTER, AJ ;

MORRISON, JA ;

STOICHEFF, BP .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1959, 12 (01) :53-&

[4] STRUCTURE AND SELF-SIMILARITY OF SILICA AEROGELS [J].

VACHER, R ;

WOIGNIER, T ;

PELOUS, J ;

COURTENS, E .

PHYSICAL REVIEW B, 1988, 37 (11) :6500-6503

[5] THERMAL CONDUCTIVITY AND SPECIFIC HEAT OF NONCRYSTALLINE SOLIDS [J].

ZELLER, RC ;

POHL, RO .

PHYSICAL REVIEW B, 1971, 4 (06) :2029-&

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