CAJ | 학술논문

为了研究超导带材的热物性，基于激光光热法构建了超导带材热扩散率测试系统，建立了热扩散率计算数学模型，在30～75 K温区对Bi-2223超导带材的热扩散率进行了测试，结果表明：Bi-2223超导带材热扩散率随温度升高而降低，在30～40 K温区下降较快，而在40～75 K温区则趋于平缓，得到了Bi-2223超导带材的实际应用和热设计适用温区。
위료연구초도대재적열물성，기우격광광열법구건료초도대재열확산솔측시계통，건립료열확산솔계산수학모형，재30～75 K온구대Bi-2223초도대재적열확산솔진행료측시，결과표명：Bi-2223초도대재열확산솔수온도승고이강저，재30～40 K온구하강교쾌，이재40～75 K온구칙추우평완，득도료Bi-2223초도대재적실제응용화열설계괄용온구。
To study the thermal properties of superconducting tapes ,a superconducting tape thermal diffusivity test system has been established based on the laser photothermal method .And the mathe-matical model has been constructed to calculate thermal diffusivity . T hey are used to measure the thermal diffusivity of Bi-2223 suerconducting tape in the temperature scope from 30 K to 75 K .The re-sults show that as the temperature increases ,the thermal diffusivity of the high temperature super-conducting Bi-2223 tape will decrease ,and that it will decrease faster in the temperature scope from 30 K to 40 K than in that from 40 K to 75 K .As a result ,the applicable temperature scope of Bi-2223 superconducting can meet the needs of the design and actual application .