Chemically strengthened glass and chemically strengthened glass
A kind of strengthening glass and chemical technology, applied in the field of chemically strengthening glass, can solve the problems affecting the warping of chemically strengthening glass, and achieve the effect of suppressing defects
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[0156] Hereinafter, although an Example is given and this invention is demonstrated concretely, this invention is not limited to this. Examples 1 to 5 are examples, and Example 6 is a comparative example. It should be noted that the values shown in parentheses are calculated values, and blank columns indicate that they are not included or not evaluated.
[0157] The raw materials were prepared so as to have the composition shown in Table 1 in terms of molar percentage based on oxides, put into a platinum crucible, put into a resistance heating electric furnace at 1650° C., melted for 3 hours, homogenized, and degassed.
[0158] The obtained glass was poured into a mold, kept at a temperature of 680° C. for 1 hour, and then cooled to room temperature at a rate of 1° C. / min to obtain a glass block. Next, the glass block is cut, ground, and mirror-finished on both sides to obtain glass having a predetermined size.
[0159] In addition, the glasses of Examples 3 and 6 were pro...
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