摘要:
An object of the present invention is to provide a glass for chemical strengthening which is capable of improving strength as compared with an ordinary soda lime silicate glass even when the same chemical strengthening treatment as that in a conventional process is applied and has good devitrification characteristics, a chemically strengthened glass using the glass for chemical strengthening, and a method for producing the chemically strengthened glass. The present invention provides a glass for chemical strengthening having a specific glass composition described in the present specification.
摘要:
The present invention relates to a method for producing a silica glass substrate for an imprint mold, containing: obtaining a glass body from a glass-forming raw material containing an SiO 2 precursor; machining the glass body into a glass substrate having a predetermined shape; and removing an affected layer on a surface of the glass substrate, to produce a silica glass substrate for an imprint mold having a fictive temperature distribution in a region from the surface to a depth of 10 µm on the side to be subjected to a transfer pattern formation of the glass substrate being within ±30°C.
摘要:
An object is to provide a glass for chemical toughening treatment satisfying low brittleness, low melt viscosity and high chemical toughening characteristics, and a chemically toughened glass using the same. Provided is a glass for chemical toughening treatment containing, in mass% in terms of oxides, SiO 2 63 to 76, B 2 O 3 0 to 2, Al 2 O 3 2 to 10, MgO 2 to 12, CaO 0.1 to 8, Na 2 O 14.5 to 19, K 2 O 0 to 3, and Fe 2 O 3 0 to 0.5, satisfying a total content of alkali earth metal oxides (RO) being from 5 to 15, satisfying 15×MgO/RO-RO≥3, and having a temperature T 2 at which a glass viscosity reaches 10 2 dPa·s being 1,600°C or lower.
摘要翻译:本发明的目的是提供一种满足低脆性,低熔融粘度和高化学增韧特性的用于化学增韧处理的玻璃以及使用该化学增韧玻璃的化学钢化玻璃。 本发明提供以氧化物换算计含有SiO 2 63〜76,B 2 O 3 0〜2,Al 2 O 3 10〜10,MgO 2〜12,CaO 0.1〜8,Na 2 O 14.5〜19,K 2 O 0的化学增韧处理用玻璃 至3,并且Fe 2 O 3 0至0.5,满足碱土金属氧化物(RO)的总含量为5至15,满足15×MgO / RO-RO≥3且具有玻璃粘度达到102的温度T2 dPa·s为1600℃以下。