摘要:
A glass for a magnetic recording medium substrate permitting the realization of a magnetic recording medium substrate affording good chemical durability and having an extremely flat surface, a magnetic recording medium substrate comprised of this glass, a magnetic recording medium equipped with this substrate, and methods of manufacturing the same. The glass is an oxide glass not including As or F.
摘要:
According to one aspect of the present invention, provided is glass for use in substrate for information recording medium, which comprises, denoted as molar percentages, a total of 70 to 85 percent of SiO2 and Al2O3, where SiO2 content is equal to or greater than 50 percent and Al2O3 content is equal to or greater than 3 percent; a total of equal to or greater than 10 percent of Li2O, Na2O and K2O; a total of 1 to 6 percent of CaO and MgO, where CaO content is greater than MgO content; a total of greater than 0 percent but equal to or lower than 4 percent of ZrO2, HfO2, Nb2O5, Ta2O5, La2O3 Y2O3 and TiO2; with the molar ratio of the total content of Li2O, Na2O and K2O to the total content of SiO2, Al2O3, ZrO2, HfO2, Nb2O5, Ta2O5, La2O3, Y2O3 and TiO2 ((Li2O+Na2O+K2O)/(SiO2+Al2O3+ZrO2+HfO2+Nb2O5+Ta2O5+La2O3+Y2O3+TiO2)) being equal to or less than 0.28. Further provided are the substrate for information recording medium, information recording medium and their manufacturing methods according to the present invention.
摘要翻译:根据本发明的一个方面,提供了一种用于信息记录介质的基板的玻璃,其包括以摩尔百分数表示的总和为70〜85%的SiO 2和Al 2 O 3,其中SiO 2含量等于或大于 50%,Al2O3含量等于或大于3%; 总计等于或大于10%的Li2O,Na2O和K2O; CaO和MgO的总量为1〜6%,其中CaO含量大于MgO含量; 总共大于0%但等于或低于ZrO2,HfO2,Nb2O5,Ta2O5,La2O3 Y2O3和TiO2的4%; 其中Li2O,Na2O和K2O的总含量与SiO2,Al2O3,ZrO2,HfO2,Nb2O5,Ta2O5,La2O3,Y2O3和TiO2((Li2O + Na2O + K2O)/(SiO2 + Al2O3 + ZrO 2 + HfO 2 + Nb 2 O 5 + Ta 2 O 5 + La 2 O 3 + Y 2 O 3 + TiO 2))等于或小于0.28。 还提供了根据本发明的用于信息记录介质的基板,信息记录介质及其制造方法。
摘要:
An on-vehicle camera lens glass material satisfies at least one of conditions in which a measurement result in water resistance based on a powder method prescribed by Japanese Optical Glass Industrial Standard is 1st Class, a measurement result in Knoop hardness based on a measurement method prescribed by Japanese Optical Glass Industrial Standard is 6th Class or higher, a measurement result in solarization based on a measurement method prescribed by Japanese Optical Glass Industrial Standard is 2% or less, and a measurement result in average linear expansion coefficient based on a measurement method prescribed by Japanese Optical Glass Industrial Standard is 100×10−7° C.−1 or less.
摘要:
According to one aspect of the present invention, provided is glass for use in substrate for information recording medium, which comprises, denoted as molar percentages, a total of 70 to 85 percent of SiO2 and Al2O3, where SiO2 content is equal to or greater than 50 percent and Al2O3 content is equal to or greater than 3 percent; a total of equal to or greater than 10 percent of Li2O, Na2O and K2O; a total of 1 to 6 percent of CaO and MgO, where CaO content is greater than MgO content; a total of greater than 0 percent but equal to or lower than 4 percent of ZrO2, HfO2, Nb2O5, Ta2O5, La2O3, Y2O3 and TiO2; with the molar ratio of the total content of Li2O, Na2O and K2O to the total content of SiO2, Al2O3, ZrO2, HfO2, Nb2O5, Ta2O5, La2O3, Y2O3 and TiO2 ((Li2O+Na2O+K2O)/(SiO2+Al2O3+ZrO2+HfO2+Nb2O5+Ta2O5+La2O3+Y2O3+TiO2)) being equal to or less than 0.28. Further provided are the substrate for information recording medium, information recording medium and their manufacturing methods according to the present invention.
摘要翻译:根据本发明的一个方面,提供了一种用于信息记录介质的基板的玻璃,其包括以摩尔百分数表示的总和为70〜85%的SiO 2和Al 2 O 3,其中SiO 2含量等于或大于 50%,Al2O3含量等于或大于3%; 总计等于或大于10%的Li2O,Na2O和K2O; CaO和MgO的总量为1〜6%,其中CaO含量大于MgO含量; 总共大于0%但等于或低于ZrO2,HfO2,Nb2O5,Ta2O5,La2O3,Y2O3和TiO2的4%; 其中Li2O,Na2O和K2O的总含量与SiO2,Al2O3,ZrO2,HfO2,Nb2O5,Ta2O5,La2O3,Y2O3和TiO2((Li2O + Na2O + K2O)/(SiO2 + Al2O3 + ZrO 2 + HfO 2 + Nb 2 O 5 + Ta 2 O 5 + La 2 O 3 + Y 2 O 3 + TiO 2))等于或小于0.28。 还提供了根据本发明的用于信息记录介质的基板,信息记录介质及其制造方法。
摘要:
The provided are a glass for a magnetic recording medium substrate permitting the realization of a magnetic recording medium substrate affording good chemical durability and having an extremely flat surface, a magnetic recording medium substrate comprised of this glass, a magnetic recording medium equipped with this substrate, and methods of manufacturing the same. Glasses for a magnetic recording medium substrate are, glass I comprised of an oxide glass, comprising, denoted as mass percentages: Si 20 to 40 percent, Al 0.1 to 10 percent, Li 0.1 to 5 percent, Na 0.1 to 10 percent, K 0 to 5 percent (where the total content of Li, Na, and K is 15 percent or less), Sn 0.005 to 0.6 percent, and Ce 0 to 1.2 percent; the Sb content is 0 to 0.1 percent; and not comprising As or F; glass II comprised of oxide glass, comprising, as converted based on the oxide, denoted as molar percentages: SiO2 60 to 75 percent, Al2O3 1 to 15 percent, Li2O 0.1 to 20 percent, Na2O 0.1 to 15 percent, and K2O 0 to 5 percent (where the total content of Li2O, Na2O, and K2O is 25 percent or lower); based on the total amount of the glass components, 0.01 to 0.7 mass percent of Sn oxide and 0 to 1.4 mass percent of Ce oxide are added; the content of Sb oxide is 0 to 0.1 mass percent; and not comprising As or F; and glass III comprised of oxide glass, comprising, converted based on the oxide, denoted as molar percentages: SiO2 60 to 75 percent, Al2O3 1 to 15 percent, Li2O 0.1 to 20 percent, Na2O 0.1 to 15 percent, K2O 0 to 5 percent (where the total content of Li2O, Na2O, and K2O is 25 percent or less); by comprising a 0.1 to 3.5 mass percent of total content of Sn oxide and Ce oxide, based on the total amount of the glass components; the ratio of the Sn oxide content to the total content of Sn oxide and Ce oxide (Sn oxide content/(Sn oxide content+Ce oxide content)) is 0.01 to 0.99; the Sb oxide content is 0 to 0.1 percent; and comprising no As or F.
摘要:
An on-vehicle camera lens glass material satisfies at least one of conditions in which a measurement result in water resistance based on a powder method prescribed by Japanese Optical Glass Industrial Standard is 1st Class, a measurement result in Knoop hardness based on a measurement method prescribed by Japanese Optical Glass Industrial Standard is 6th Class or higher, a measurement result in solarization based on a measurement method prescribed by Japanese Optical Glass Industrial Standard is 2% or less, and a measurement result in average linear expansion coefficient based on a measurement method prescribed by Japanese Optical Glass Industrial Standard is 100×10−7° C.−1 or less.
摘要:
Provided are a glass for a window which glass is suitably fitted to a semiconductor package made of a plastic and a glass window for the semiconductor package which glass window has various functions, the glass (1) being for use as a window material for a semiconductor package made of a plastic and having an average linear expansion coefficient of 120×10−7/° C. to 180×10−7/° C. at a temperature of 100 to 300° C., or (2) the glass having the above average linear expansion coefficient and having a U content of 5 ppb or less and a Th content of 5 ppb or less, and the glass window (a) being formed of the above glass for a window, (b) having the function of a lens and the above average linear expansion coefficient, or being formed of a glass (c) having the above average linear expansion coefficient and having a U content of 5 ppb or less and a Th content of 5 ppb or less and containing Cu and phosphorus oxide, the glass window being capable of exhibiting a transmittance of 50% at a wavelength of 630 nm or less in terms of a spectral transmittance at a wavelength of 400 to 700 nm when the glass has a thickness of 0.5 mm.
摘要:
According to one aspect of the present invention, provided is glass for use in substrate for information recording medium, which comprises, denoted as molar percentages, a total of 70 to 85 percent of SiO2 and Al2O3, where SiO2 content is equal to or greater than 50 percent and Al2O3 content is equal to or greater than 3 percent; a total of equal to or greater than 10 percent of Li2O, Na2O and K2O; a total of 1 to 6 percent of CaO and MgO, where CaO content is greater than MgO content; a total of greater than 0 percent but equal to or lower than 4 percent of ZrO2, HfO2, Nb2O5, Ta2O5, La2O3 Y2O3 and TiO2; with the molar ratio of the total content of Li2O, Na2O and K2O to the total content of SiO2, Al2O3, ZrO2, HfO2, Nb2O5, Ta2O5, La2O3, Y2O3 and TiO2 ((Li2O+Na2O+K2O)/(SiO2+Al2O3+ZrO2+HfO2+Nb2O5+Ta2O5+La2O3+Y2O3+TiO2)) being equal to or less than 0.28. Further provided are the substrate for information recording medium, information recording medium and their manufacturing methods according to the present invention.
摘要翻译:根据本发明的一个方面,提供了一种用于信息记录介质的基板的玻璃,其包括以摩尔百分数表示的总和为70〜85%的SiO 2和Al 2 O 3,其中SiO 2含量等于或大于 50%,Al2O3含量等于或大于3%; 总计等于或大于10%的Li2O,Na2O和K2O; CaO和MgO的总量为1〜6%,其中CaO含量大于MgO含量; 总共大于0%但等于或低于ZrO2,HfO2,Nb2O5,Ta2O5,La2O3 Y2O3和TiO2的4%; 其中Li2O,Na2O和K2O的总含量与SiO2,Al2O3,ZrO2,HfO2,Nb2O5,Ta2O5,La2O3,Y2O3和TiO2((Li2O + Na2O + K2O)/(SiO2 + Al2O3 + ZrO 2 + HfO 2 + Nb 2 O 5 + Ta 2 O 5 + La 2 O 3 + Y 2 O 3 + TiO 2))等于或小于0.28。 还提供了根据本发明的用于信息记录介质的基板,信息记录介质及其制造方法。
摘要:
An optical glass comprises, denoted as weight percentages, SiO2: 2-22%, B2O3: 3-24%, ZnO: >8% and ≦30%, CaO+BaO+ZnO: 10-50%, MgO: 0-3%, La2O3+Y2O3+Gd2O3+Yb2O3: 1-33%, TiO2: 2-20%, ZrO2: 0-10%, Nb2O5: 2-32%, Li2O: 0-5%, Na2O: 0-8%, K2O: 0-10%, WO3: 0-20%. The ratio by weight of La2O3 to the combined contents of La2O3, Y2O3, Gd2O3, and Yb2O3 (La2O3/(La2O3+Y2O3+Gd2O3+Yb2O3)) falls within a range of 0.7 to 1.
摘要翻译:光学玻璃包括以重量百分比表示的SiO 2:2-22%,B 2 O 3 3:3-24%,ZnO :> 8%和<= 30%,CaO + BaO + ZnO:10-50%,MgO:0-3%,La 2 O 3 + Y 2 u> 3 + 3 + 2 + 3 + 3 + 3 + 3 u> u> / SUB>:1-33%,TiO 2:2-20%,ZrO 2:0-10%,Nb 2 O 2〜2%,2-32%,Li 2 O:0-5%,Na 2 O:0-8%,K 2 0:0〜10%,WO 3:0〜20%。 La 2 O 3 3重量比与La 2 O 3的组合含量的比例,Y
摘要:
Provided are a near-infrared-absorbing glass having high transmittance in a visible light region, an excellent near infrared absorption property, excellent climate resistance, etc., and is suitable for use as/in a near-infrared-absorbing element such as a near-infrared-absorbing filter, and a near-infrared-absorbing element to which the above near-infrared-absorbing glass is applied, and the near-infrared-absorbing glass contains, by cationic %, 25 to 45% of P5+, 1 to 10% of Al3+, 15 to 30% of Li+, 0.1 to 10% of Mg2+, 0.1 to 20% of Ca2+, 0.1 to 20% of Sr2+, 0.1 to 20 Ba2+ and 1 to 8% of Cu2+ and contains, as anionic components, 25 to 50 anionic % of F− and O2−.