A METHOD OF INCREASING THE LENGTH OF LIFE OF HEATING ELEMENTS AT LOW TEMPERATURES

摘要

A method of lengthening the useful life of heating elements that are essentially comprised of molybdenum silicide and molybdenum tungsten silicide and different alloys of these basic materials, when the elements are operated at a relatively low temperature, such as a temperature in the range of 400-800 DEG C, The invention is characterised in that the atmosphere surrounding the elements as they operate is caused to have a water content that is less than about one percent by volume.