The synthesis of tungsten carbide was conducted by the wire explosion of tungsten under an intense electrical current in liquid paraffin, and ultrafine tungsten carbide powder in the order of nm was successfully recovered. X-ray diffraction analysis results revealed the recovered powder was extremely strained cubic WC1-X. TEM observations confirmed the presence of many twinned regions in each cubic WC1-X particle. In addition, a unique core-shell structure was observed where WC1-X particles were covered by a copper layer.
流動パラフィン中におけるタングステンの細線起爆によって，炭化タングステンのナノ粉末の合成に成功した。 X線回折の結果，回収された粉末は大きく歪んだ立方晶のWC1-Xであることが分かった。 TEM観察では，双晶の粒子や銅が薄く被覆したコアシェル構造の粒子を確認した。
tungsten carbide, wire explosion, high-capacity condenser bank, liquid paraffin, core-shell structure