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- W2334452774 abstract "金属チタンと非晶質ホウ素との混合粉末およびTiNと非晶質ホウ素との混合粉末を用いて,アルゴン気流中の固相反応法により,TiB2粉末の合成を行った.チタン源の相違によるTiB2生成過程および粒形態の特徴を比較検討した結果を,以下に総括する.(1)チタンと非品質ホウ素との混合試料(B/Ti=2.0)を,600℃で前処理後,600~1500℃で再加熱処理した場合,800℃前後の急激な発熱を伴うTiB2溶融塊の生成を認めることなく,900℃,60min以上の加熱処理により,単一相のTiB2粉末となった.(2)TiNと非晶質ホウ素との混合試料を原料とした場合には,反応速度の温度依存性が顕著であり,B/TiN=2.2の組成で,1400℃,360min以上の加熱処理により十分な反応制御下でTiB2粉末を合成できた.(3)チタンと非晶質ホウ素から合成したTiB2粉末の形態は,粒径が15~20μmと均一であり,内部に空洞の存在する中空状軽量TiB2粉末である.チタン源をTiNとした場合は,粒径が0.5~2μmのホットプレスに適した微細TiB2粉末が合成できた." @default.
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- W2334452774 date "1988-01-01" @default.
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- W2334452774 title "Synthesis of titanium diboride powder by solid state reaction of titanium metal or titanium nitride with amorphous boron." @default.
- W2334452774 doi "https://doi.org/10.2497/jjspm.35.229" @default.
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