粉体および粉末冶金
Online ISSN : 1880-9014
Print ISSN : 0532-8799
ISSN-L : 0532-8799
研究論文
AlN–WCセラミックスの合成と機械的性質
関根 崇仁野 章弘菅原 靖杉山 重彰大口 健一泰松 斉
著者情報
ジャーナル 認証あり

2020 年 67 巻 10 号 p. 581-587

詳細
抄録

AlN–WC and AlN–Y2O3 composite ceramics were prepared by the resistance-heated hot pressing method at the sintering temperatures of 1873 K and 1973 K. The AlN grains were well-bonded each other by the addition of WC into AlN. W2C-type phase was produced by the addition of WC into AlN ceramics. The bulk density of AlN–WC ceramics was increased with increasing the WC amount, and was in good agreement with the calculated density in ceramics containing 10–50 mol% WC at 1873 K and 1–50 mol% WC at 1973 K. The Young’s modulus for AlN–WC ceramics was increased with increasing the WC amount, reaching for 470 GPa at 50 mol% WC. The addition of WC into AlN ceramics improved mechanical properties, both Vickers hardness and fracture toughness. The AlN–50 mol% WC ceramic had the highest Vickers hardness and fracture toughness value of 17 GPa and 5.9 MPa m0.5, respectively. The thermal conductivity of AlN–WC ceramics was virtually constant at 1–50 mol% WC, ranging between 40 and 60 W m-1 K-1.

著者関連情報
© 2020 一般社団法人粉体粉末冶金協会
前の記事 次の記事
feedback
Top