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新陶瓷材料可提高发动机性能 - 站长搜索
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新陶瓷材料可提高发动机性能

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2020-08-18 09:56:06 转载来源: 科技日报

俄罗斯科学院结构宏观力学和材料学研究所改进了用碳化硅制造陶瓷零件的技术,使用这种新材料可大大提高汽车、飞机和其他设备发动机的性能。相关研究报告发表在《国际陶瓷》杂志上

俄罗斯科学院结构宏观力学和材料学研究所改进了用碳化硅制造陶瓷零件的技术,使用这种新材料可大大提高汽车、飞机和其他设备发动机性能。相关研究报告发表在《国际陶瓷》杂志上。

碳化硅广泛应用于各个工业领域的半导体、结构材料和磨料中。由长石和石英砂制成的碳化硅陶瓷可以承受巨大的压缩力,但它对结构缺陷非常敏感,因此它的拉伸强度和弯曲强度都低,抗裂性也不好,从而限制了其用途。

该研究所自传播高温合成科研中心科研人员斯捷潘·沃罗德洛表示:“碳化硅陶瓷或可替代稀缺的含钴、镍和铬的合金,可用于制造涡轮机叶片和内燃机零件,提高发动机的工作温度、功率、牵引力、有效系数和生态性。”

斯捷潘·沃罗德洛表示,已经能够通过形成增强纳米纤维来改善碳化硅陶瓷材料的性能。他称,由于混合添加了钽和聚四氟乙烯,已成功地以碳化硅为基质,用增强的碳化硅纳米纤维合成了一种新材料。它们激活了陶瓷的烧结并提高了材料的强度,因为它们可阻止裂纹的扩展。另外,由于形成纳米纤维,显著地降低了陶瓷在真空炉中的温度和保持时间。

标签: 新陶瓷 陶瓷 材料 提高 发动机 性能


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