因此，钇可以大幅度提高铁铬铝电热合金循环氧化寿命。
The cyclic oxidation life of Fe-Cr-Al alloy is thus significantly increased by optimum yttrium addition.
【中英文摘要】本文介绍了电热合金电阻随温度变化的试验方法。
The test method for change of resistance with temperature of metallic materials for electrical heating was given in this paper.
应用电子显微镜、X射线衍射技术，对低温长期使用的铁铬铝电热合金进行分析。
Using electron microscopy and X-ray diffraction techniques, the structure changes of Fe-Cr-Al alloy being used at low temperature for a long time were investigated.
本试验方法适用于电热合金随温度变化的测量，亦可用于超过电热合金使用温度范围的情况。
This test method covers the determination of the change of resistance with temperature of metallic materials for electrical heating, and is applicable over the range of service temperatures.
本试验方法适用于电热合金随温度变化的测量，亦可用于超过电热合金使用温度范围的情况。
N. B. The using temperature of bricks should not exceed the experimental temperature of Linear Change after Heating. The above Heat-Conduction Coefficent is obtained by using flat-plate method.
中温箱式采用封闭型炉膛，以电热合金丝为发热元件制成螺旋形后盘绕于炉膛四壁之中，散热时炉温均匀，延长了使用寿命。
Medium temperature box adopts enclosed fire pot. The spiral heating component made by electric heated alloy wire coil all around of furnace pot. It has functions of evenly loss heat and long use life.
中温箱式采用封闭型炉膛，以电热合金丝为发热元件制成螺旋形后盘绕于炉膛四壁之中，散热时炉温均匀，延长了使用寿命。
Medium temperature box adopts enclosed fire pot. The spiral heating component made by electric heated alloy wire coil all around of furnace pot. It has functions of evenly loss heat and long use life.
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