Thermoelement comprising a graphite/boron carbide thermocouple

Details Thermoelement comprising a graphite/boron carbide thermocouple Thermoelement comprising a graphite/boron carbide thermocouple

G - Physics

01

K

73/63

G01K 7/06 (2006.01)

Patent

CA 1216762

ABSTRACT The invention is an improved thermoelement which comprises a graphite/boron carbide thermocouple, the arms of which are constructed as a tube and a rod, arranged con- centrically inside the tube, which are electrically connected at one end. One of the arms of the thermocouple consists essentially of boron carbide formed from self bonding boron carbide by pressureless sintering. Prefabricated sleeves of high-purity, boron-oxide-free hexagonal boron nitride are used between the arms of the thermocouple as spacers. Only the end of the arm of the thermocouple constructed as a rod is secured in an electrically conductive connecting piece and the arm is freely mobile in the direction towards the cold junction. As the material for the arm of the thermocouple constructed as a rod, there can be used, for example, boron carbide having a coarse-grained structure and a density of from 60 to 80% TD, which has been manufactured from boron carbide powder having bimodal particle size distribution by means of extrusion, followed by pressureless sintering at from 2000 to 2250°C. The thermoelement can also be manufactured in one operation by means of pressureless sintering of the boron carbide powder in situ. Such a thermoelement comprises, for example, a flexible graphite cord for the arm of the thermo- couple constructed as a rod, a boron-nitride envelope and a boron carbide casing, the envelope and casing having been formed from powders sintered in situ without pressure. -20-

436865

Affiliated with

Also associated with

Rating

Thermoelement comprising a graphite/boron carbide thermocouple does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Thermoelement comprising a graphite/boron carbide thermocouple, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thermoelement comprising a graphite/boron carbide thermocouple will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1302115