Ceramic grid

Figure 10>4. (A) Ceramic grid support system. (B) Typical arrangement of cross partition rings. (C) Typical arrangement of Norton grid blocks. (Courtesy of Norton Chemical Process Products Corporation.)...

Interrante, Mario, et al. Lead-free package interconnection for ceramic grid arrays. Proc. Semicon West, San Jose, CA, July 2003. 

Figure 3 Bright-field (a) and dark-field (b) STEM images of crushed ceramic particles dispersed on a "holey" carbon film supported on an electron microscope grid (shown at the right).

It is important to consider thermal effects in the design of the grid-to-shell seal. Bypassing of the grid at the seal point is a common problem caused by situations such as uneven expansion of metal and ceramic parts, a cold plenum and hot solids in contact with the grid plate at the same time, and start-up and shutdown scenarios. When the atmosphere in the bed is sufficiently benign, a sparger-type... 

Grid packings, which are relatively easy to fabricate, are usually used in columns of square section, and frequently in cooling towers which are described in Volume 1, Chapter 13. They may be made from wood, plastics, carbon, or ceramic materials, and, because of the relatively large spaces between the individual grids, they give low pressure drops. Further advantages lie in their ease of assembly, their ability to accept fluids with... 

Reforming in the CRG process occurs adiabatically at 450-550 C at pressures up to about 600 psig (41 atmospheres). The reactor is a vertical cylindrical pressure vessel containing a bed of the special high-nickel catalyst which is supported on a grid or on inert ceramic halls. The gas flow is downwards through the bed and distributors are provided at inlet and outlet. A layer of ceramic balls on top of the bed prevents disturbance of the catalyst by the entering gas. 

Figure 6. Cofired ceramic pin grid array package with 270 pins and a tape-automated-bonded 1C.

Figure 3.39 Ceramic discs prevent short-circuits in the national grid.

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