| 摘要 |
<p>#CMT# #/CMT# The material has an array of conductor metal and non-magnetized magnetic entities, where the entities are magnetized with an average orientation defined by a direction of a magnetic field applied on the material for blowing an electrical arc between electrical contact studs. Each electrical contact stud has an upper layer that comprises material such as silver or copper, or stable refractory compound. The magnetic entities are rare earth based hard magnetic compounds such as nanostructured alloy of neodymium/praseodymium, iron and boron. #CMT# : #/CMT# An independent claim is also included for a method for fabricating an electrical contact stud. #CMT#USE : #/CMT# Utilization of material for realizing a stud of an electrical contact (all claimed) e.g. low voltage electrical contact of a car, and in domestic or industrial field, or direct current or alternating current electrical contact of an interruptor, a relay, a contactor and circuit-breaker. #CMT#ADVANTAGE : #/CMT# The upper layer isolates the magnetic entities from the contact studs, thus reducing the welding risks during closing of the contact, without affecting the duration of the electric arc at the time of opening of the contact. The material realizes the contact stud whose functioning is not altered by energy of the electric arc in short term or long term. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic view illustrating different orientations of magnetic field obtained by a stud of an electrical contact. #CMT#INORGANIC CHEMISTRY : #/CMT# The stable refractory compound is chosen from a group comprising cadmium oxide, tin dioxide, zinc oxide, bismuth oxide, carbon, tungsten carbide, magnesium oxide and indium oxide. #CMT#METALLURGY : #/CMT# The stable refractory compound is chosen from a group comprising nickel, iron, molybdenum, zirconium and tungsten and oxides of nickel, iron, molybdenum, zirconium and tungsten.</p> |
