Process for producing concentric-circular-gradient functional material for biogenic use and apparatus for producing the same
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United States of America Patent
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May 22, 2012
Grant Date -
Oct 23, 2008
app pub date -
Jun 13, 2008
filing date -
Dec 13, 2005
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A concentric-circular-gradient functional material for biogenic use is produced using first, second, third and forth cylindrical partitions, and a cylindrical dice which are concentrically stood on a supporting stand. Ti powder (A) fills the first cylindrical partition. A first mixed powder including Ti powder (A) and biogenic material powder (B) fills between the first and second cylindrical partitions. A second mixed powder including a smaller amount of Ti powder (A) than the first mixed powder fills between the second and third cylindrical partitions. A third mixed powder including a smaller amount of Ti powder (A) than the second mixed powder fills between the third and fourth cylindrical partitions. The biogenic material powder (B) fills between the fourth cylindrical partition and the dice. The first to fourth partitions are pulled out. The dice is capped using a punch. The powders are sintered using a discharge plasma sintering machine.
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