摘要:
The present invention is concerned with the preparation of hydraulic cements, demonstrating high mechanical strength, long term resistance to attack by moisture, and virtual freedom from creep, from glass powders consisting essentially, expressed in terms of mole percent on the oxide basis, of about 60-76% SiO.sub.2, 15-30% K.sub.2 O, and 2-15% total of at least one metal oxide selected from the group of 0-10% Al.sub.2 O.sub.3, 0-5% V.sub.2 O.sub.5, 0-5% TiO.sub.2, 0-5% MoO.sub.3 and 0-5% WO.sub.3. The cements exhibit particular utility in forming strong cellular ceramic articles. The glass powders may contain a phosphate component in which case the composition ranges are limited to 68-76% SiO.sub.2, 18-24% K.sub.2 O, 2-4.5% P.sub.2 O.sub.5 with the molar ratio K.sub.2 O:P.sub.2 O.sub.5 ranging between 5 and 10, and 2-5% total of at least one metal oxide selected from the group of Al.sub.2 O.sub.3, MoO.sub.3, V.sub.2 O.sub.5 and WO.sub.3.
摘要翻译:本发明涉及水硬性水泥的制备,其表现出高的机械强度,长期抵抗水分侵蚀,以及从基本上由氧化物基础上表示的玻璃粉末基本上由摩尔百分数表示的玻璃粉末的大约 60-76%SiO 2,15-30%K 2 O和2-15%总量的至少一种选自0-10%Al 2 O 3,0-5%V 2 O 5,0-5%TiO 2,0-5 %MoO 3和0-5%WO 3。 水泥在形成强的细胞陶瓷制品方面表现出特别的效用。 玻璃粉末可以含有磷酸盐成分,在这种情况下,组成范围限于SiO 2的68-76%,18-24%K 2 O,2-4.5%P 2 O 5,K 2 O:P 2 O 5的摩尔比在5和10之间,2- 选自Al2O3,MoO3,V2O5和WO3中的至少一种金属氧化物的总量为5%。
摘要:
This invention is directed to the production of inorganic crystalline fibers containing a minor amount of Mo0.sub.3 and/or W0.sub.3 and/or As.sub.2 0.sub.3 and wherein the predominant crystal phase is selected from the group of a fluormica, a fluoramphibole, canasite, potassium and/or sodium fluorrichterite, fluorapatite, and a lithium-containing, beta-spodumene-type crystal.
摘要翻译:本发明涉及含有少量MoO 3和/或W 3 O和/或As 2 O 3的无机结晶纤维的制备,其中主要结晶相选自氟堇,氟phi石,堇青石,钾和/或钠 氟锆石,氟磷灰石和含锂的β-锂辉石型晶体。
摘要:
This invention is directed to spontaneous opal glasses wherein Ba.sub.2 F(PO.sub.4) constitutes the predominant crystalline opal phase. The glasses exhibit softening points in excess of 710.degree. C., excellent chemical durability, and consist essentially, in weight percent on the oxide basis, of 6-10% Na.sub.2 O, 1-6% K.sub.2 O, 4-11% BaO, 9-18% Al.sub.2 O.sub.3, 50-70% SiO.sub.2, 3.5-7% P.sub.2 O.sub.5, and 1-4% F.
摘要:
This invention relates to the production of a composite article consisting of an opal glass body exhibiting a dense, milky-white appearance coated with an adherent enamel demonstrating high gloss and exceptional chemical durability. More specifically, the opal glasses of the present invention have compositions within the Na.sub.2 O-Al.sub.2 O.sub.3 -SiO.sub.2 -F system and demonstrate a softening point in excess of 760.degree. C., a strain point in excess of 490.degree. C., and a coefficient of thermal expansion (0.degree.-300.degree. C.) of about 66-75 .times. 10.sup..sup.-7 /.degree. C. The enamels of the instant invention have flux compositions within the Li.sub.2 O-B.sub.2 O.sub.3 -TiO.sub.2 -ZrO.sub.2 -PbO-SiO.sub.2 system, will fire to a high gloss in less than about 10 minutes at temperatures below about 720.degree. C., will exhibit coefficients of thermal expansion (25.degree.-300.degree. C.) about 3-10 points lower than the opal glass substrate, will demonstrate lead release after chemical attack of less than about 2 .mu.g/cm.sup.2, and will manifest excellent resistance to dishwasher detergents.
摘要:
This invention is directed to the production of spontaneous essentially non-crystalline opal glasses exhibiting a very dense, milky-white appearance and excellent resistance to weathering and attack by alkaline detergents consisting essentially, expressed in weight percent on the oxide basis, of 2-5% K.sub.2 O, 4-10% Na.sub.2 O, 4.5-12% RO, wherein RO consists of 0-3% MgO, 0-6% CaO, 0-8% SrO, and 0-11% BaO, 4-9% B.sub.2 O.sub.3, 6-15% Al.sub.2 O.sub.3, 0-5% TiO.sub.2, 51-66% SiO.sub.2, 1-6% P.sub.2 O.sub.5, and 1-5% F.
摘要:
The instant invention involves the production of articles exhibiting an internal microstructure and physical characteristics like those of glass-ceramic bodies but which can be formed spontaneously from a molten glass. Hence, in contrast to the production of conventional glass-ceramic articles, no heat treatment of a parent or precursor glass body is required to cause crystallization in situ to occur. More particularly, the instant invention is concerned with the manufacture of highly crystalline glass-ceramic articles, having compositions within the Li.sub.2 O-Na.sub.2 O-Al.sub.2 O.sub.3 -MgO-SiO.sub.2 -F system, wherein a fluormica constitutes the predominant crystal phase, which can be formed spontaneously from a molten glass batch.
摘要:
This invention is directed to spontaneous opal glasses containing an apatite opacifying phase and exhibiting a softening point of at least 740.degree. C., excellent chemical durability, and a temperature interval between the high temperature crystallization liquidus and the emulsion liquidus greater than 50.degree. C. The glasses consist essentially, in weight percent on the oxide basis, of______________________________________ SiO.sub.2 50-63 Na.sub.2 O 5.5-10 Al.sub.2 O.sub.3 10-14 K.sub.2 O 0-10 P.sub.2 O.sub.5 3.5-7 BaO 0-10 PbO 2-12 CaO 0-2.5 B.sub.2 O.sub.3 1-4 SrO 0-8 F 1.5-4 BaO + CaO + SrO At Least 3 mole % ______________________________________
摘要翻译:本发明涉及包含磷灰石不透明相并显示至少740℃的软化点,优异的化学耐久性以及高于50℃的高温结晶液相线和乳液液相线之间的温度间隔的自发蛋白石玻璃。 玻璃基本上以氧化物的重量百分数计,-SiO 2 50-63 Na 2 O 5.5-10 -Al 2 O 3 10-14 K 2 O 0-10 -P 2 O 5 3.5-7 BaO 0-10 -PbO 2-12 CaO 0-2.5 -B2O3 1-4 SrO 0-8 -F 1.5-4 BaO + CaO + SrO至少3摩尔%
摘要:
This invention is drawn to spontaneous opal glasses containing an apatite-type crystal opacifying phase and exhibiting a temperature interval between the emulsion and high temperature crystallization liquidi of at least 50.degree. C. which consist essentially, in weight percent on the oxide basis, of______________________________________ Na.sub.2 O 7.5-11 B.sub.2 O.sub.3 2-4.5 K.sub.2 O 0-5 SiO.sub.2 57-65 Na.sub.2 O + K.sub.2 O .ltoreq.13 P.sub.2 O.sub.5 2-5.5 BaO 0-9.5 F 1.5-4 CaO 0-3 SrO 0-5 ZnO 0.4-5 MgO 0-2.5 Al.sub.2 O.sub.3 8-13 SrO + MgO 0-5 ______________________________________ CaO and/or SrO and/or BaO at least 2.5 mole %.
摘要:
Cellular ceramic bodies are produced by frothing a crystal-containing, ion-exchanged gel and setting the gel. An aqueous gel is prepared from a water-swelling mica and is blended in conjunction with a large cation donor, e.g., a potassium salt or silicate glass, and a surfactant to effect frothing of the gel by a shearing action and exchange of large cations with lithium and/or sodium ions from the mica to produce an ion-exchanged gel that sets in controllable manner.
摘要:
This invention relates to the manufacture of spontaneous opal glasses demonstrating a dense, milky-white appearance, excellent resistance to attack by water and detergents, softening points in excess of 760.degree. C., and containing either NaBaPO.sub.4 or Na.sub.5 P.sub.3 O.sub.10 as the predominant crystal phase. The glasses consist essentially, expressed in weight percent on the oxide basis, of 6-12% Na.sub.2 O, 5-16% BaO, 0.9-7% Al.sub.2 O.sub.3, 2-7% B.sub.2 O.sub.3, 55-70% SiO.sub.2, and 5-9% P.sub.2 O.sub.5.
摘要翻译:本发明涉及自发的蛋白石玻璃的制造,其表现出致密的乳白色外观,优异的抗水和去污剂的抗性,软化点超过760℃,并且含有NaBaPO4或Na5P3O10作为主要结晶相。 玻璃基本上以氧化物的重量百分数表示,6-12%Na 2 O,5-16%BaO,0.9-7%Al 2 O 3,2-7%B 2 O 3,55-70%SiO 2和5-9% P2O5。