仪表级复合材料在惯性仪表中的应用进展

Application Progress of Instrument Grade Al Matrix Composites in Inertial Instruments

铝基复合材料是近年来发展起来的一类先进工程材料,具有高的比强度和比模量,特别是这些复合材料各向同性,并且具有比Be更高的抗微小变形的能力和优异的尺寸稳定性,另外,还可以对这些材料进行热膨胀系数设计以便和其他材料匹配。由于这些材料可以大批量、稳定制备,且可以精密加工成复杂形状,使它们成为惯性仪表构件的理想材料。本文综述了近年来,惯性领域中仪表级复合材料国内外的应用研究现状,讨论了仪表级复合材料应用对惯性仪表精度提高所产生的积极作用。

As a new class advance engineering material, A1 matrix composites demonstrate high specific strength and stiff- ness and isotropic behavior. Moreover, they offer distinctive performance advantages over conventional beryllium, including higher resistance to micro - deformation and better dimensional stability. Furthermore, A1 matrix composites can be tailored to match the coefficients of thermal expansion （CTE） of other materials, including beryllium, stainless steel, and electro- less nickel. They could be produced stably in large quantity and be precision machined into complex sharp. Therefore, they have been identified as promising materials for inertial instruments components. In the present work, domestic and abroad practical applications progress of instrument grade A1 matrix composites in advanced guidance equipment have been presen- ted, and the corresponding improvement effect in accuracy have been discussed.