| 摘要 |
PROBLEM TO BE SOLVED: To obtain a heat transmitting tube for a heat exchanger excellent in heat resistance, anticorrosion and heat transmission property. SOLUTION: A heat transmitting tube for a heat exchanger is made of ceramics with a softening temperature of 1,450 deg.C and with heat conductivity of 7.0 W/m.K or more at 1,200 deg.C. A cover layer comprising one or more of Al2 N3 , SiC, Si3 N4 and AlN may be formed to obtain heat resistance and anticorrosion. |
