Mechanically Activated Combustion Synthesis of β‐Si6−zAlzOzN8−z (z=1–4)
Mechanically Activated Combustion Synthesis of β‐Si6−zAlzOzN8−z (z=1–4)
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DOI：
10.1111/j.1551-2916.2006.01387.x
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发表时间：
2007-02
影响因子：
3.9
通讯作者：
K. Aoyagi;Takehito Hiraki;R. Sivakumar;Toshiyuki Watanabe;T. Akiyama
中科院分区：
文献类型：
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作者：
K. Aoyagi;Takehito Hiraki;R. Sivakumar;Toshiyuki Watanabe;T. Akiyama
以Si、Al、SiO2等为原料，在1 MPa的氮化气氛下，采用机械活化燃烧合成法（CS）制备细小的β-赛隆（Si6−zAlzOzN8−z，1<z<4）。通过行星研磨仅进行 18 分钟的机械活化，燃烧合成后就形成了 β-sialon。与球磨的对比实验表明，CS后行星研磨至18分钟时，β-sialon的相对量显着增加至66%。采用纯度94.8质量％的废硅替代原料硅，并在相同工艺参数下成功燃烧合成，实现了成本效益的措施。
Fine β-sialon (Si6−zAlzOzN8−z, 1<z<4) was prepared by mechanical-activated combustion synthesis (CS) using raw materials such as Si, Al, and SiO2 in a nitriding atmosphere of 1 MPa. Mechanical activation by planetary milling for only 18 min led to the formation of β-sialon after combustion synthesis. Comparative experiments with ball milling showed that the relative amount of β-sialon was considerably increased to 66% when planetary milled to 18 min after CS. The raw material Si was replaced by waste Si of 94.8 mass% in purity, and was combustion synthesized successfully under the same processing parameters for cost-effective measures.