LIMITATIONS ON THE USE OF AN ELECTRIC CURRENT WHEN DETERMINING THE THERMAL CONDUCTIVITY OF GRAPHITE UNDER STEADY THERMAL CONDITIONS

被引：2

作者：

Kostanovskii, A. V. ^{[1
]}

Kostanovskaya, M. E. ^{[1
]}

Zeodinov, M. G. ^{[1
]}

机构：

[1] Russian Acad Sci OIVT RAN, Joint Inst High Temp, Moscow, Russia

来源：

MEASUREMENT TECHNIQUES | 2011年 / 54卷 / 08期

关键词：

graphite; electric heating; spontaneous breakdown; steady thermal operating conditions;

D O I：

10.1007/s11018-011-9827-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

It is shown experimentally that the thermal conductivity of DE-24 graphite under steady thermal conditions when using an electric current as the heat source cannot be determined at a temperature higher than 3300 K. It is established that this temperature limit is due to spontaneous breakdown of the steady thermal operating conditions, which is expressed as an increase with time of the internal surface temperature and the mean value of the electric power assigned to the high-temperature isothermal part of the hollow cylindrical sample.

引用

页码：921 / 925

页数：5

共 11 条

[1]

[Асиновский Э.И. Asinovskii E.I.], 2006, [Теплофизика высоких температур, High Temperature, Teplofizika vysokikh temperatur], V44, P401

[2]

ASINOVSKII EI, 1998, TEPLOFIZ VYS TEMP, V36, P740

[3]

Asinovskiy E. I., 2002, USP FIZ NAUK, V172, P931

[4] UBER DAS WARMELEITVERMOGEN KUNSTLICH HERGESTELLTER GRAPHITSTIFTE BEI TEMPERATUREN ZWISCHEN 3300 UND 3700-DEGREES-K [J].

EULER, J .

NATURWISSENSCHAFTEN, 1952, 39 (24) :568-569

[5] THE THERMAL CONDUCTIVITY AND EMISSIVITY OF DE-24 GRAPHITE AT TEMPERATURES OF 2300-3000 K [J].

Kostanovskii, A. V. ;

Zeodinov, M. G. ;

Kostanovskaya, M. E. .

MEASUREMENT TECHNIQUES, 2011, 53 (12) :1380-1388

[6]

Kostanovskii A. V., 2010, IZMER TEKH, P38

[7]

Kostanovskii A.V., 2011, IZMER TEKH, P37

[8]

KOSTANOVSKII AV, 2001, TEPLOFIZ VYS TEMP, V39, P163

[9]

KOSTANOVSKII AV, 2011, Patent No. 2419782

[10] THERMAL PROPERTY MEASUREMENTS AT VERY HIGH TEMPERATURES [J].

RASOR, NS ;

MCCLELLAND, JD .

REVIEW OF SCIENTIFIC INSTRUMENTS, 1960, 31 (06) :595-604

← 1 2 →