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    簡單便宜方法制出更堅固材料

    發布日期:2019-03-26字號:[ ]


    文章來源:科技日報
      創新連線·聯盟
      俄羅斯國家研究型技術大學莫斯科國立鋼鐵合金學院(NUST MISIS)的學者們發明了一種獲取立方氮化硼納米粒子的經濟方法。這種方法有助于以工業規模生產復合材料改進劑——強化劑。研究結果發表在科學雜志《材料科學與工程A》上。
      復合材料是多元材料,通常由塑料基礎構成,而塑料基礎則有堅固性高的填充物加固。許多復合材料在機械性能方面超越傳統材料與合金,但卻更輕薄。
      該學院無機納米材料科研實驗室的學者們發明了通過在球磨機中對立方氮化硼進行可控分層和粉碎其微細粉的方法來獲取納米粒子的技術。立方氮化硼是典型的夾層材料,與石墨烯是結構上的孿生子。實驗室高級研究員、本項研究共同作者安德烈·科瓦利斯季介紹說:“工作成果表明,在球磨機中對立方氮化硼進行分層和粉碎的效率極高,這種方法有助于確保高效生產出平均尺寸在50納米到100納米的納米粒子。”
      利用所獲得納米粒子,學者們在已經展示出極大硬化的鋁的基礎上,合成了首批復合金屬陶瓷材料。按照計算,新技術獲取類似納米結構的成本可能降至利用傳統高溫合成法成本的二十分之一。
      (來源:俄羅斯衛星通訊社)
      欄目主持人:房琳琳,文字整編:李釗





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