公开(公告)号：US3981818A

公开(公告)日：1976-09-21

申请号：US406585

申请日：1973-10-15

申请人： Carl F. Swinehart ,  Marko Sfiligoj

发明人： Carl F. Swinehart ,  Marko Sfiligoj

IPC分类号： C30B21/02 ,  G02B5/20

CPC分类号： C30B21/02

摘要： A composition of matter transparent to infrared rays and shock resistant which is a directionally grown, polycrystalline solidified melt of a eutectic composition comprising at least two components wherein the ratio of the index of refraction of one to the other is within the range of 1.2 to 1.0, the directionally oriented, polycrystalline mass is grown in a controlled manner by adding heat to the melt and removing the same from the solids during the solidification step, the amount of heat being added to the melt and conducted through the solidified melt being 10.sup.3 to 10.sup.5 times the latent heat of fusion of the eutectic mixture.

摘要翻译： 包含至少两种组分的共晶组合物的定向生长的多晶固化熔体的红外线透光性和耐冲击性的组合物，其中一种与另一种之间的折射率之比在1.2至1.0的范围内 ，通过向熔体中加热并在固化步骤中将其从固体中除去，以有控制的方式生长定向取向的多晶质量，加入到熔体中并通过固化熔体传导的热量为103至105 倍的共晶混合物的融合潜热。