Patent ID: 9140522
Filing Date: 2015-09-22
Classification: B32B,C04B,F41H

Abstract:
1. A transparent ceramic composite armor made of a crystalline transparent ceramic material and an amorphous glass phase material, the armor having a strike face and an axis perpendicular to the strike face, the armor comprising: a first portion having a width measured along the axis, the first portion containing 100 per cent of the ceramic material, the first portion including the strike face; a second portion having a width along the axis and being contiguous and integral with the first portion of the armor, the second portion containing a combination of the ceramic material and the glass phase material wherein relative volumetric amounts of the ceramic material and the glass phase material in the second portion are inversely related and further wherein a greates volume percentage of the ceramic material in the seconc portion is adjacent the first portion and the volume percentage of the ceramic material in the second portion decreases along the axis in a direction away from the strike face; and a third portion of the armor having a width measured along the axis and contiguous and integral with the second portion of the armor, the third portion containing 100 per cent of the glass phase material; wherein the third portion includes a rear face, the armor further comprising a first adhesive layer adjacent the rear face and a first glass layer adjacent the first adhesive layer; and further comprising additional alternating layers of adhesive and glass disposed behind the first glass layer.