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最近,市场上引入了一种新的发热元件,它是一种改性的MoSi_2,其中部分Mo由W取代,在氧化气氛下的最高元件温度可达1900℃,这种新元件的高耐火性能使炉温达1820℃下连续或间断作业。在其它气氛下,如H_2、N_2、Ar、放热型气体、吸热型气体和氨以及真空中,新的发热元件比现用的MoSi_2元件能在更高的温度下使用。元件的使用寿命取决于炉子的操作条件,如温度、表面负荷、热处理方式、控制系统。在实验室试验炉中,这种元件能在炉温1800～1920℃连续作业2000小时,在50～60次加热和冷却循环间歇作业情况下得到很满意的效果。
Recently, a new heating element has been introduced on the market, which is a modified MoSi2, in which some Mo is replaced by W and the highest element temperature in an oxidizing atmosphere is up to 1900 ° C. The high fire resistance of this new element The furnace temperature up to 1820 ℃ continuous or intermittent operation. In other atmospheres, such as H 2, N 2, Ar, exothermic gases, endothermic gases and ammonia, and in vacuum, new heating elements can be used at higher temperatures than current MoSi 2 elements. Component life depends on the operating conditions of the furnace, such as temperature, surface load, heat treatment, control system. In the laboratory test furnace, this kind of element can work continuously for 2000 hours at the temperature of 1800 ~ 1920 ℃, and get satisfactory results in 50 ~ 60 heating and cooling cycle intermittent operation.