CAJ | 학술논문

针对固体线膨胀系数测定实验中样品所处温度梯度场过大、升温和降温速率控制精度低的问题，提出了实验改进的措施。阐述了减小实验样品的温度场梯度，用设定程序控制实验样品的升温、恒温和降温的实施过程，并对金属样品线膨胀系数测定实验结果进行了分析，取得了固体线膨胀系数测定实验的改进设计的预期效果。
침대고체선팽창계수측정실험중양품소처온도제도장과대、승온화강온속솔공제정도저적문제，제출료실험개진적조시。천술료감소실험양품적온도장제도，용설정정서공제실험양품적승온、항온화강온적실시과정，병대금속양품선팽창계수측정실험결과진행료분석，취득료고체선팽창계수측정실험적개진설계적예기효과。
An improved method was applied to measure the linear expansion coefficient of solid samples ,so as to address the issue of temperature sweep rate control caused by large temperature gra-dient .The temperature gradient near a sample was effectively reduced by a program-controlled method when increasing and decreasing the temperature .The linear expansion coefficients of metal samples were obtained by this method and improved results were successfully achieved as expected .