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概述 热敏双金属亦称热双金属,是一种热敏感功能材料。它是由两种或两种以上热膨胀系数差异较大的金属或合金复合而成。利用其受热弯曲的特性可以制成多种自动控制元件。 热双金属的首次应用始于1766年,被用作天文精确计时环境温度变化补偿元件。1899年法国的Guillaume发明了因瓦合金(Ni36Fe),该合金在0℃时,其热膨胀系数为1×10~(-6)/℃,用作热双金属的被动层组元合金,大大地提高了热双金属的热敏感性,可以说是热双金属发展的第一个里程
Thermal bimetal, also known as thermal bimetal, is a thermally sensitive functional material. It is composed of two or more different thermal expansion coefficient of the larger metal or alloy composite. The use of its characteristics of heated bending can be made of a variety of automatic control components. The first application of thermal bimetal began in 1766 and was used as a compensating element for precise timing changes in temperature. In 1899 Guillaume of France invented Invar (Ni36Fe), which has a thermal expansion coefficient of 1 × 10 -6 / ° C at 0 ° C and is used as a passive bimetallic passive layer alloy, Thermal bimetal to improve the thermal sensitivity, can be said that the development of thermal bimetal first milestone