公开(公告)号：US06797401B2

公开(公告)日：2004-09-28

申请号：US10175396

申请日：2002-06-20

申请人： Dale P. Herron

发明人： Dale P. Herron

IPC分类号： B22F906

CPC分类号： H05K9/0083 ,  H01Q17/004 ,  Y10S428/928 ,  Y10S428/937 ,  Y10T428/12063 ,  Y10T428/12111 ,  Y10T428/12465

摘要： Electromagnetic wave absorbing materials comprising magnetic alloy particles and an insulating matrix are disclosed. The magnetic alloy particles comprise a transition metal such as Fe and/or Co, and further comprise at least one refractory metal such as Ti, V, Cr, Zr, Nb, Mo, Hf, Ta and W. The magnet alloy particles may further include Ni and/or Al, or other alloying additions which provide the desired absorption characteristics. In a preferred embodiment, the magnetic alloy particles comprise an Fe—Cr—Ni—Al alloy. The insulating matrix of the electromagnetic wave absorbing material may comprise a water miscible polysilicate or a refractory cement. The materials may be provided in the form of coatings that are applied to a substrate, such as the hot engine exhaust area of an aircraft. The electromagnetic wave absorbing materials are capable of functioning at very high temperatures for extended periods of time while retaining satisfactory electromagnetic wave absorbing properties.

摘要翻译： 公开了包括磁性合金颗粒和绝缘基质的电磁波吸收材料。 磁性合金颗粒包括过渡金属如Fe和/或Co，并且还包含至少一种难熔金属如Ti，V，Cr，Zr，Nb，Mo，Hf，Ta和W.磁体合金颗粒可以进一步 包括提供所需吸收特性的Ni和/或Al或其它合金添加剂。 在优选实施例中，磁性合金颗粒包含Fe-Cr-Ni-Al合金。 电磁波吸收材料的绝缘基体可以包括水混溶性聚硅酸盐或耐火水泥。 材料可以以施加到基底（例如飞行器的热发动机排气区域）的涂层的形式提供。 电磁波吸收材料能够在非常高的温度下延长时间，同时保持令人满意的电磁波吸收特性。