-
公开(公告)号：US5071795A
公开(公告)日：1991-12-10
申请号：US639100
申请日：1991-01-09
申请人： George H. Beall , Candace J. Quinn
发明人： George H. Beall , Candace J. Quinn
摘要： This invention is directed to the production of glasses demonstrating working temperatures below about 450.degree. C., transition temperatures no higher than about 350.degree. C., and good resistance to attack by mild aqueous alkaline solutions consisting essentially, expressed in terms of mole percent on the oxide basis of______________________________________ Li.sub.2 O 0-25 ZnO 25-50 Na.sub.2 O 5-20 Al.sub.2 O.sub.3 0-3 K.sub.2 O 0-12 P.sub.2 O.sub.5 25-37 Li.sub.2 O + Na.sub.2 O + K.sub.2 O 15-35 SnO 0-10 ______________________________________ to which are included 0.5-8% Cl and 0-5% F., as analyzed in weight percent.
-
82.发明授权
公开(公告)号：US4920081A
公开(公告)日：1990-04-24
申请号：US258674
申请日：1988-10-17
申请人： George H. Beall , Candace J. Quinn
发明人： George H. Beall , Candace J. Quinn
摘要： This invention relates to the preparation of glasses exhibiting low transition temperatures with excellent chemical durability. The glasses consist essentially, in mole %, of:______________________________________ P.sub.2 O.sub.5 44-58 Al.sub.2 O.sub.3 + 4-10 Na.sub.2 O + Li.sub.2 O 10-45 B.sub.2 O.sub.3 Al.sub.2 O.sub.3 0-7 Na.sub.2 O 10-30 Cu.sub.2 O 0-20 B.sub.2 O.sub.3 0-10 Li.sub.2 O 0-30 Li.sub.2 O + Cu.sub.2 O 10-30 ______________________________________
-
公开(公告)号：US4687749A
公开(公告)日：1987-08-18
申请号：US922948
申请日：1986-10-24
申请人： George H. Beall
发明人： George H. Beall
IPC分类号： C03C3/085 , C03B32/00 , C03B32/02 , C03C10/00 , C03C10/04 , C03C10/06 , C03C10/12 , C03C10/14
CPC分类号： C04B35/195 , C03C10/0045 , C04B35/20 , C04B2235/3203 , C04B2235/3206 , C04B2235/3208 , C04B2235/3213 , C04B2235/3215 , C04B2235/3217 , C04B2235/3232 , C04B2235/3244 , C04B2235/36 , C04B2235/80 , C04B2235/96
摘要： This invention is concerned with the production of glass-ceramic articles wherein enstatite constitutes the predominant crystal phase. Compositions exhibiting a high modulus of rupture, a use temperature in excess of 1200.degree. C., and a high fracture toughness consist essentially, expressed in terms of weight percent on the oxide basis, of about 20-35% MgO, 2-12% Al.sub.2 O.sub.3, 40-70% SiO.sub.2, and at least one metal oxide in the indicated proportions selected from the group consisting of 0-2% Li.sub.2 O, 0-4% CaO, 0-12% SrO, and 0-17% BaO, at least 0.5% Li.sub.2 O being required when present alone and at least 1% SrO and/or BaO being required in the absence of Li.sub.2 O. Compositions exhibiting a use temperature of 1500.degree. C. consist essentially, expressed in terms of weight percent on the oxide basis, of about 30-35% MgO, 53-58% SiO.sub.2, and 10-14% ZrO.sub.2.
-
84.发明授权
公开(公告)号：US4397670A
公开(公告)日：1983-08-09
申请号：US416961
申请日：1982-09-13
申请人： George H. Beall
发明人： George H. Beall
CPC分类号： C03C10/16
摘要： The instant invention is directed to the production of highly crystalline glass-ceramic articles demonstrating high intrinsic mechanical strength and toughness containing crystals of canasite and/or agrellite and/or fedorite as the predominant crystal phase. The articles have overall compositions consisting essentially, expressed in terms of weight percent on the oxide basis, of about______________________________________ SiO.sub.2 45-75 CaO 8-30 F 3.5-12 Na.sub.2 O 3-15 K.sub.2 O 0-20 Na.sub.2 O + K.sub.2 O 5-25 B.sub.2 O.sub.3 0-6 Al.sub.2 O.sub.3 0-7 ZrO.sub.2 0-12. ______________________________________
摘要翻译： 本发明涉及高度结晶的玻璃陶瓷制品的生产，其表现出高的固有机械强度和韧性，其包含作为主要结晶相的canasite和/或agoleite和/或fedregite晶体。 这些制品具有基本上以氧化物为基准的约-SiO 2 45-75 -CaO 8-30 -F 3.5-12 -Na 2 O 3-15-K 2 O 20-20 -Na 2 O + K 2 O的基本上组成的总体组成 5-25 -B2O3 0-6-Al2O3 0-7-ZrO2 0-12。 -
-
公开(公告)号：US4391914A
公开(公告)日：1983-07-05
申请号：US387790
申请日：1982-06-14
申请人： George H. Beall
发明人： George H. Beall
CPC分类号： C03C10/0027 , C03C10/0054
摘要： The glass-ceramic disclosed is characterized by a lithium aluminosilicate crystal phase having a very low coefficient of thermal expansion and a residual glassy phase of substantial amount and higher coefficient of expansion, usually a borosilicate or boroaluminosilicate glass. The two phases form a dilatant system wherein the thermal expansion curve changes markedly in character at a transition point in the range of 500.degree.-750.degree. C., the crystal phase dominating below that temperature and the glass phase controlling at higher temperatures.
摘要翻译： 公开的玻璃陶瓷的特征在于具有非常低的热膨胀系数的硅铝酸锂晶相和具有大量和更高膨胀系数（通常为硼硅酸盐或硼硅铝酸盐玻璃）的残余玻璃相。 两相形成膨胀系统，其中热膨胀曲线的特征在500℃-750℃的转变点，晶体相主导低于该温度，玻璃相在较高温度下控制。
-
公开(公告)号：US4341544A
公开(公告)日：1982-07-27
申请号：US294466
申请日：1981-08-20
申请人： George H. Beall , Joseph E. Pierson
发明人： George H. Beall , Joseph E. Pierson
CPC分类号： C03C10/0018 , C03C21/00 , C03C21/001
摘要： The present invention is concerned with glass-ceramic articles which are extremely resistant to impact and spontaneous delayed breakage, are capable of being sawn with a diamond wheel to a depth of over one-third the cross section thereof without breakage, and exhibit modulus of rupture values of at last 150,000 psi. The articles consist of a body portion and an integral surface compression layer having a depth of at least 0.005". The body portion consists essentially, in weight percent, of about 8-13% Na.sub.2 O, 7-13% K.sub.2 O, 30-36% Al.sub.2 O.sub.3, 35-43% SiO.sub.2, and 6-10% RO.sub.2, wherein RO.sub.2 consists of 6-10% TiO.sub.2 and 0-4% ZrO.sub.2, wherein the molar ratio Al.sub.2 O.sub.3 :SiO.sub.2 is >0.5 but 1:3 but
摘要翻译： 本发明涉及对耐冲击和自发延迟断裂非常耐受的玻璃陶瓷制品，其能够用金刚石锯切成三分之一以上的深度而不断裂，并且具有断裂模量 最终值为150,000 psi。 物品由身体部分和深度至少为0.005“的整体表面压缩层组成。 主体部分主要由重量百分数组成，约8-13％的Na2O，7-13％的K2O，30-36％的Al2O3,35-43％的SiO2和6-10％的RO2，其中RO2由6-10 ％TiO 2和0-4％ZrO 2，其中Al 2 O 3 :SiO 2的摩尔比为> 0.5但<0.6，并且摩尔比K 2 O：Na 2 O为> 1，但<1并且包含对应于式Na8-xKxAl8Si8O32的霞石固溶体晶体 ，x为0.25-4.73，为主要结晶相。 表面层含有卡氏硅酸盐作为主要结晶相，并且通过使基础玻璃陶瓷制品经受离子交换反应来制备，其中K +离子替代霞石固溶体晶体中的至少一部分Na +离子，以将这些晶体转化为卡氏硅酸盐。
-
87.发明授权Highly refractory glass-ceramics suitable for incorporating radioactive wastes 失效适用于纳入放射性废物的耐高温玻璃陶瓷
公开(公告)号：US4314909A
公开(公告)日：1982-02-09
申请号：US164363
申请日：1980-06-30
CPC分类号： C03C3/062 , C03C10/00 , C03C10/0009 , G21F9/305
摘要： This invention is concerned with the production of glass-ceramics especially suitable for incorporating radioactive wastes. The inventive glass-ceramics contain at least two crystal phases selected from the group of pollucite, mullite, monazite, and, optionally, tetragonal or cubic zirconia as the predominant crystal phases and consist essentially, expressed in weight percent on the oxide basis, of 5-40% Cs.sub.2 O, 15-50% Al.sub.2 O.sub.3, 0-30% La.sub.2 O.sub.3 +CeO.sub.2, 0-20% P.sub.2 O.sub.5, 0-30% ZrO.sub.2, 12-65% La.sub.2 O.sub.3 +CeO.sub.2 +P.sub.2 O.sub.5, and 15-50% SiO.sub.2.
摘要翻译： 本发明涉及特别适用于纳入放射性废物的玻璃陶瓷的生产。 本发明的玻璃陶瓷含有至少两种选自以下的晶相：琉璃榴石，莫来石，独居石和任选的四方晶或立方氧化锆作为主要结晶相，并且基本上以氧化物的重量百分比表示为5 -40％Cs 2 O，15-50％Al 2 O 3，0-30％La 2 O 3 + CeO 2，0-20％P 2 O 5，0-30％ZrO 2，12-65％La 2 O 3 + CeO 2 + P 2 O 5和15-50％SiO 2。
-
公开(公告)号：US4239521A
公开(公告)日：1980-12-16
申请号：US559786
申请日：1975-03-19
申请人： George H. Beall
发明人： George H. Beall
CPC分类号： C03C10/0027
摘要： The instant invention to the manufacture of articles exhibiting the highly-crystalline, uniformly fine-grained microstructure of conventional glass-ceramic bodies, but which can be formed spontaneously through cooling a molten glass-forming batch. Hence, the articles of the present invention are not produced by heat treating glass bodies at elevated temperatures to cause crystallization in situ as is required in the manufacture of the classic glass-ceramic articles. Instead, this invention provides a method for spontaneously-forming glass-ceramic articles having compositions within a narrowly-defined area of the Li.sub.2 O-Al.sub.2 O.sub.3 -B.sub.2 O.sub.3 -SiO.sub.2 -TiO.sub.2 field wherein alpha-quartz solid solution constitutes the predominant crystal phase.
摘要翻译： 本发明涉及制造表现出常规玻璃 - 陶瓷体的高度结晶，均匀细粒度显微组织的制品，但可以通过冷却熔融玻璃形成批料而自发形成。 因此，本发明的制品不是通过在升高的温度下热处理玻璃体而产生的，以在制造经典玻璃陶瓷制品时所需的原位结晶。 相反，本发明提供了一种自发形成玻璃陶瓷制品的方法，该方法具有在Li 2 O-Al 2 O 3 -B 2 O 3 -SiO 2 -TiO 2领域的狭义区域内的组成，其中α-石英固溶体构成主晶相。
-
公开(公告)号：US3997352A
公开(公告)日：1976-12-14
申请号：US617250
申请日：1975-09-29
申请人： George H. Beall
发明人： George H. Beall
CPC分类号： C03C10/0045
摘要： This invention is concerned with the production of glass-ceramic articles wherein phlogopite mica solid solution and beta-spodumene solid solution comprise the primary crystal phases. Such articles demonstrate good machineability characteristics along with low coefficients of thermal expansion, excellent thermal shock resistance, and relatively high refractoriness.
摘要翻译： 本发明涉及玻璃陶瓷制品的生产，其中金云母固溶体和β-锂辉石固溶体包含一级结晶相。 这种制品表现出良好的可加工性特性以及低的热膨胀系数，优异的耐热冲击性和相对高的耐火性。
-
公开(公告)号：US3936287A
公开(公告)日：1976-02-03
申请号：US437008
申请日：1974-01-28
CPC分类号： C03C10/0045 , C03C21/00
摘要： This invention is concerned with glass-ceramic articles having compositions within a very narrowly-delimited area of the MgO-Al.sub.2 O.sub.3 -B.sub.2 O.sub.3 -SiO.sub.2 field and having alpha-quartz and sapphirine as the principal crystal phases, resulting from nucleation through a combination of TiO.sub.2 and ZrO.sub.2. Upon contacting such articles with lithium ions at an elevated temperature, said lithium ions will replace magnesium ions on a two Li.sup.+-for-one Mg.sup..sup.+2 basis within the crystal structures, thereby providing a unitary glass-ceramic article having an integral surface layer wherein the principal crystal phase is a lithium-stuffed beta-quartz solid solution. That transformation of crystal phases results in compressive stresses being set up within the surface layer as the articles are cooled. Through the careful control of composition, crystallization treatment, and the parameters of the replacement reaction in the crystal structures, a tremendous degree of stored elastic energy can be developed within the articles such that they will demonstrate frangibility when fractured but will not exhibit undesirable spontaneous breakage and/or spalling.
摘要翻译： 本发明涉及具有在MgO-Al2O3-B2O3-SiO2领域的非常狭窄的区域内的组成的玻璃陶瓷制品，并且具有α-石英和蓝宝石作为主要晶相，这是由于通过TiO 2和 ZrO2。 在升高的温度下使这些物品与锂离子接触时，所述锂离子将在晶体结构内以两个Li +一Mg ++取代镁离子，从而提供一种单一的玻璃陶瓷制品，其具有 其中主晶相是锂填充的β-石英固溶体的整体表面层。 晶体相的转变导致当制品被冷却时在表面层内形成压应力。 通过仔细控制组合物，结晶处理和晶体结构中的置换反应参数，可以在制品内形成大量储存的弹性能，使其在断裂时显示脆性，但不会显示出不希望的自发断裂 和/或剥落。
-
-
-
-
-
-
-
-
-
搜索结果
90 条记录 (耗时 0.026 秒)
