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首页> 外文会议>International Symposium on Nitrides; 20060403-05; Eskisehir(TK) >Mechanochemical Nitride Synthesis
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Mechanochemical Nitride Synthesis

机译：机械化学氮化物的合成

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摘要

A frequent criticism of nitride materials during the last 30 years, and especially those designed for structural applications has been that the cost is too high by a factor of (say) 10. In the competition with cheaper materials (albeit with poorer properties and shorter lifetimes), users have generally preferred to go for the cheaper option, rather than the more expensive nitrides. Despite many attempts to address this issue, the cost of nitride processing has remained high - due to the high price of starting materials, the high temperatures needed for firing, and also the finishing costs (often involving diamond machining), and this has been a major factor limiting the market share enjoyed by these materials. A number of studies have been reported recently using the technique of mechanochemical synthesis, in which nitrogen is incorporated (usually via ammonia) into the starting powders during a high-energy milling process (at room temperature). In the subsequent firing, considerably lower temperatures are needed to produce the resulting final nitride product(s). In this presentation, the technique of mechanochemical synthesis is discussed, the range of materials that have been produced are reviewed, and the potential of this technique for reducing the cost of bulk nitride production is reviewed.
机译：在过去的30年中，经常有人批评氮化物材料，尤其是那些用于结构应用的氮化物材料，其成本太高了（例如）10倍。在与便宜材料的竞争中（尽管性能较差且寿命较短） ），用户通常更愿意选择便宜的产品，而不是更昂贵的氮化物。尽管为解决这个问题进行了许多尝试，但是氮化物的加工成本仍然很高-由于起始材料的价格高，烧成所需的高温以及最终加工成本（通常涉及金刚石加工），这一直是高成本的。限制这些材料享有的市场份额的主要因素。最近已经报道了使用机械化学合成技术的许多研究，其中在高能研磨过程中（在室温下）将氮（通常通过氨）掺入到起始粉末中。在随后的烧成中，需要相当低的温度以产生最终的氮化物产物。在此演示文稿中，讨论了机械化学合成技术，综述了已生产的材料范围，并综述了该技术降低整体氮化物生产成本的潜力。

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