Powder metallurgy, functionally graded materials, polymeric ceramic precursors, thermal expansion, ceramic material composition, corrosion resistance, ultrasonification, layer-by-layer process, pyrolysis, shrinkage control
Thermal or corrosive material resistance, biotechnology for bone implants
Shrinkage control efficiency of particles prepared from powder metallurgy of functionally graded materials
This invention is an improved powder metallurgy technique for functionally graded material (FGM) preparation, which involves the use of pre-ceramic polymers as binders for metal/ceramic powder blends, and provides shrinkage control of each individual layer. The two FGM systems prepared include the Al/SiC FGM for use in aerospace applications due to its light weight and high durability, and the Cu/Sic FGM for use in dynamic seal applications as in mechanical face seals where corrosion resistance and good heat transfer ability are required.
U.S. Patent Number 6,020,447; issued February 1, 2000
Last revised: November 5, 2010
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