THE POSSIBILITY OF APPLICATION OF NEWLY DEVELOPED ALLOYS AS STRESS AND FORCE SENSOR WITH EXTENDED OPERATION TEMPERATURE RANGE

摘要

The paper presents a new possibility for the utilizing of Fe-Co-Si-Cu-Nb-B alloys as the cores of stress and force sensors. Increasing of cobalt content in the Fe_(73.5-x)Co_xNb_3Cu_1Si_(13.5)B_9 alloys cause increase their Curie temperature. As a result sensors with cores made of such material can operate in higher temperature range than sensors based on the well known amorphous alloys or FINEMET-type (Fe_(73.5)Nb_3Cu_1Si_(13.5)B_9 ) alloys. In the paper both novel construction method of magnetoelastic sensors as well as magnetoelastic characteristics of Fe(73.5-x)Co_xNb_3Cu_1Si_(13.5)B_9 alloys in the as-quenched and nanocrystalline states are presented. Some guidelines for magnetoelastic sensors constructors are indicated.