摘要:
A substantially alkaline resistant calcium-iron-phosphate (CFP) glass and methods of making and using thereof. In one application, the CFP glass is drawn into a fiber and dispersed in cement to produce glass fiber reinforced concrete (GFRC) articles having the high compressive strength of concrete with the high impact, flexural and tensile strength associated with glass fibers.
摘要:
A substantially alkaline resistant calcium-iron-phosphate (CFP) glass and methods of making and using thereof. In one application, the CFP glass is drawn into a fiber and dispersed in cement to produce glass fiber reinforced concrete (GFRC) articles having the high compressive strength of concrete with the high impact, flexural and tensile strength associated with glass fibers.
摘要:
Barium lanthanoborate sealing-glass compositions are provided comprising various combinations (in terms of mole-%) of boron oxide (B.sub.2 O.sub.3), barium oxide (BaO), lanthanum oxide (La.sub.2 O.sub.3), and at least one other oxide selected from the group consisting of aluminum oxide (Al.sub.2 O.sub.3), calcium oxide (CaO), lithium oxide (Li.sub.2 O), sodium oxide (Na.sub.2 O), silicon dioxide (SiO.sub.2), or titanium dioxide (TiO.sub.2). These sealing-glass compositions are useful for forming hermetic glass-to-metal seals with titanium and titanium alloys having an improved aqueous durability and favorable sealing characteristics. Examples of the sealing-glass compositions are provided having coefficients of thermal expansion about that of titanium or titanium alloys, and with sealing temperatures less than about 900.degree. C., and generally about 700.degree.-800.degree. C. The barium lanthanoborate sealing-glass compositions are useful for components and devices requiring prolonged exposure to moisture or water, and for implanted biomedical devices (e.g. batteries, pacemakers, defibrillators, pumps).
摘要翻译:提供了硼酸钡硼酸盐密封玻璃组合物,其包括氧化硼(B 2 O 3),氧化钡(BaO),氧化镧(La 2 O 3)和选自以下的至少一种其它氧化物的各种组合(以摩尔%计): 氧化铝(Al 2 O 3),氧化钙(CaO),氧化锂(Li 2 O),氧化钠(Na 2 O),二氧化硅(SiO 2)或二氧化钛(TiO 2)。 这些密封玻璃组合物可用于形成具有改善的水性耐久性和良好密封特性的钛和钛合金的密封玻璃 - 金属密封。 提供了密封玻璃组合物的实例,其热膨胀系数约为钛或钛合金的热膨胀系数,密封温度低于约900℃,通常约为700-800℃。钡硼酸钡密封玻璃 组合物可用于需要长时间暴露于水分或水分的部件和装置,以及植入的生物医学装置(如电池,起搏器,除颤器,泵)。
摘要:
A method of improving surface-dependent properties of phosphate glass such as durability and wear resistance without significantly affecting its thermal expansion coefficient is provided which comprises annealing the glass in a dry ammonia atmosphere at temperatures approximating the transition temperature of the glass. The ammonia annealing treatment of the present invention is carried out for a time sufficient to allow incorporation of a thin layer of nitrogen into the surface of the phosphate glass, and the treatment improves the durability of the glass without the reduction in the thermal expansion coefficient that has restricted the effectiveness of prior ammonia treatments. The improved phosphate glass resulting from this method is superior in wear resistance, yet maintains suitable thermal expansion properties so that it may be used effectively in a variety of applications requiring hermetic glass-metal seals.
摘要:
Alkaline-earth lanthanoborate sealing-glass compositions containing CaO, La.sub.2 O.sub.3, B.sub.2 O.sub.3, TiO.sub.2 and Al.sub.2 O.sub.3 in various combinations of mole-% are provided. These sealing-glass compositions are useful for forming hermetic glass-to-metal seals with titanium and titanium alloys that have a high aqueous durability for component or device applications requiring exposure to moisture, water or body fluids. Particular applications of the titanium sealing-glass compositions include forming glass-to-metal seals for lithium batteries and implanted biomedical devices (e.g. batteries, pacemakers, defibrillators, pumps).
摘要:
This invention relates to low density radioactive magnesium-aluminum-silicate (MAS) microparticles that contain either samarium-yttrium, samarium, or lutetium as medical isotopes for radiotherapy and/or radioimaging.
摘要:
A method for directing vessel growth toward a blood-deficient site in a mammal comprising implanting into the mammal an assembly of at glass fibers to form a vascular bridge with a first end of the vascular bridge in contact with the blood-deficient site and a second end of the vascular bridge remote from the blood-deficient site. Over time the bridge biodegrades and promotes vascularity in the direction of the bridge.
摘要:
Glass ribbon-reinforced transparent polymer composites which provide excellent optical transparency and a low distortion level over a wide temperature range while exhibiting superior mechanical properties as compared to non-reinforced polymer counterparts, and equivalent properties as compared to glass fiber-reinforced counterparts.
摘要:
Radioactive microspheres for radiation synovectomy of arithmetic joints in a mammal comprise a biodegradable glass material and a beta radiation emitting radioisotope chemically dissolved in and distributed substantially uniformly throughout the glass material. The biodegradable glass material may be lithium silicate, lithium aluminosilicate, lithium aluminoborate, lithium germanate, lithium aluminogermanate, potassium silicate, potassium aluminosilicate, potassium, aluminoborate, potassium germanate or potassium aluminogermanate and the beta radiation emitting radioisotope may be samarium-153, holmium-166, erbium-169, dysprosium-165, rhenium-186, rhenium-188 or yttrium-90. Methods for preparing such microspheres and for carrying out radiation synovectomy of arthritic joints utilizing such microspheres are also disclosed.
摘要:
A three-dimensional scaffold with interconnected pores for repair of tissue comprising a scaffold body for structural support of the tissue scaffold, where the scaffold body comprises scaffold body components bonded to each other and made from component materials comprising about 40 to about 90 wt % B2O3, and two or more other oxides, wherein the scaffold body has a porosity between about 15 and about 90 vol %.
摘要翻译:具有用于修复组织的互连孔的三维支架,其包括用于组织支架的结构支撑的支架体,其中所述支架主体包括彼此结合并由包含约40至约90重量%B 2 O 3的组分材料制成的支架主体部件 ,以及两种或更多种其它氧化物,其中所述支架体的孔隙率为约15-约90体积%。