32 results about "Reaction bonded silicon carbide" patented technology

A chemical-mechanical polishing / planarization pad conditioner body made from diamond-reinforced reaction bonded silicon carbide, with diamond particles protruding or “standing proud” of the rest of the surface, and uniformly distributed on the cutting surface. In one embodiment, the diamond particles are approximately uniformly distributed throughout the composite, but in other embodiments they are preferentially located at and near the conditioning surface. The tops of the diamond particles can be engineered to be at a constant elevation (i.e., the conditioner body can be engineered to be very flat). Exemplary shapes of the body may be disc or toroidal. The diamond particles can be made to protrude from the conditioning surface by preferentially eroding the Si / SiC matrix. The eroding may be accomplished by electrical discharge machining or by lapping / polishing with abrasive.

The present invention relates to non-contaminating bonding materials for segmented silicon carbide liners in fluidized bed reactors. The invention also discloses segmented silicon carbide liners, in particular segmented silicon carbide liners for use in fluidized bed reactors for the production of polysilicon-coated granular materials, and methods for making and using said segmented silicon carbide liners method. A non-contaminating adhesive material for joining the silicon carbide segments is also disclosed. One or more of the silicon carbide segments may be constructed from reaction bonded silicon carbide.

The invention proposes a silicon carbide ceramic composite molding process based on light-curing prototype pyrolysis, and its basic principle is the combination of light-curing rapid prototyping technology and reaction sintering silicon carbide technology. The main process method is to use liquid photosensitive resin as the raw material for the molding of the part, and make a prototype through the photocuring rapid prototyping process to provide an organic template for the shape and internal structure of silicon carbide ceramics, and convert it into an inorganic template through a pyrolysis process—three-dimensional carbon stand. Then carry out high-temperature siliconizing, and silicon reacts in situ on the carbon support to form silicon carbide ceramics and its composite material components. The method changes the traditional ceramic component preparation process, overcomes the shortcomings of the traditional process that it is difficult to manufacture ceramic parts with complex shapes and precise dimensions, and realizes the moldless precision manufacturing of silicon carbide ceramics.