This aluminum nitride sintered body has an average grain size of aluminum nitride grains of 2 μm or less, {HEAD ~ a thermal conductivity} of {TAIL ~ 80 W/m.K} or more, and a relative density of 98% or more 
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This aluminum nitride sintered body has an average grain size of aluminum nitride grains of 2 μm or less , { HEAD ~ a thermal conductivity } of { TAIL ~ 80 W / m. K } or more , and a relative density of 98 % or more
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH