Shaped refractory metal boride articles and method of making...

Details Shaped refractory metal boride articles and method of making... Shaped refractory metal boride articles and method of making...

C - Chemistry, Metallurgy

04

B

25/123, 261/24,

C04B 35/58 (2006.01) C01B 35/04 (2006.01) C25C 3/08 (2006.01)

Patent

CA 1328284

ABSTRACT A shaped refractory article of titanium diboride or other metal has a microstructure with a weight average grain diameter of from 0.5 to 5 microns and substantially no grains larger than 10 microns diameter, from 10% to 45% by volume being made up of interconnected pores the majority having a diameter not substantially greater than 5 microns, porosity and grain size being substantially uniform throughout the microstructure, the article containing not more than about 0.2% by weight of oxygen and not more than about 0.5% by weight of carbon. The article may include inert particulate material in a matrix of the porous metal boride. The article may be formed by forming a uniformly mixed body of reactants into shaped compacts and heating the compacts to cause evolution of carbon monoxide and formation of a coherent reaction sintered product. Numerous reaction schemes are given, but the following are preferred: (1) 2TiO2 + B4C + 3C ? 2TiB2 + 4CO (2) TiO2 + B2O3 + 5C ? TiB2 + 5CO .

444367

Affiliated with

Also associated with

Rating

Shaped refractory metal boride articles and method of making... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Shaped refractory metal boride articles and method of making..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Shaped refractory metal boride articles and method of making... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1175358