Millimeter wave sintering of AIN ceramics with high thermal conductivity

Akira Kishimoto, Tetsuya Morimoto, Yasuhiro Ogihara, Hidetaka Hayashi

Research output: Contribution to journalReview articlepeer-review

2 Citations (Scopus)


By using 24 GHz millimeter-wave irradiation, a full densification of AlN with the addition of Y2O3 was attained at 1700°C, which is comparable to 28 GHz-wave irradiation. Thermal conductivity of thus obtained sample exceeded 200 W/(m+K), which is the highest value among AlN-based ceramics fabricated in non-reducing atmosphere. The full densification was also reached at 1700°C in the Yb2O3 added AlN, which temperature was higher than that for 28 GHz-wave irradiated ceramics by ca. 100°C.

Original languageEnglish
Pages (from-to)377-382
Number of pages6
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Issue number6
Publication statusPublished - Jun 2009


  • Aluminum nitride
  • Heat sink
  • Millimeter wave irradiation
  • Thermal conductivity

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Metals and Alloys
  • Materials Chemistry


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