公开(公告)号：US20120093713A1

公开(公告)日：2012-04-19

申请号：US13262311

申请日：2010-03-31

申请人： Masashi Yoshimura ,  Masaki Fukuma ,  Yutuka Tsuji ,  Shigiru Nakayama

发明人： Masashi Yoshimura ,  Masaki Fukuma ,  Yutuka Tsuji ,  Shigiru Nakayama

IPC分类号： C01F7/02 ,  C04B35/64

CPC分类号： C04B35/443 ,  C04B35/62635 ,  C04B35/63416 ,  C04B35/63448 ,  C04B35/63488 ,  C04B2235/658 ,  C04B2235/6581 ,  C04B2235/661 ,  C04B2235/77 ,  C04B2235/96 ,  C04B2235/9653

摘要： To provide a light-transmitting window material made of a spinel sintered body, wherein the largest diameter of pores contained in the light-transmitting window material is not more than 100 μm, and the number of pores having a largest diameter of not less than 10 μm is not more than 2.0 per 1 cm3 of the light-transmitting window material, and wherein light scattering factors are further reduced, and a method for producing a spinel light-transmitting window material including the steps of preparing a spinel molded body; a primary sintering step of sintering the spinel molded body at normal pressure or less or in a vacuum at a temperature in the range of 1500 to 1900° C.; and a secondary sintering step of sintering the spinel molded body under pressure at a temperature in the range of 1500 to 2000° C., wherein the relative density of the spinel molded body after the primary sintering step is 95 to 96% and the relative density of the spinel molded body after the secondary sintering step is 99.8% or more.

摘要翻译： 为了提供一种由尖晶石烧结体制成的透光窗材料，其中包含在透光窗材料中的最大直径的孔不大于100μm，并且具有最大直径不小于10的孔数 μm为1cm 3以下的透光窗材料不超过2.0，进一步减少光散射因子，以及包括制备尖晶石成型体的尖晶石透光窗材料的方法。 在1500〜1900℃的温度下，在常压或以下或真空中烧结尖晶石成型体的一次烧结工序。 以及二次烧结工序，在1500〜2000℃的温度范围内的压力下烧结尖晶石成形体，其中，一次烧结工序后的尖晶石成型体的相对密度为95〜96％，相对密度 的二次烧结步骤后的尖晶石成型体为99.8％以上。