Abstract:
An expandable medical device or component thereof including a tubular body formed of a wrapped sheet of porous polymeric material fused together, the tubular body having a fused seam at an angle relative to the longitudinal axis of the tubular body which changes along the length of the tubular body from a first angle to a second angle greater than the first angle. The sheet of porous polymeric material is wound and then fused together such that the winding angle is less in a first longitudinal section of the tubular body compared with the winding angle in a second longitudinal section of the tubular body, in order to provide the second section with greater resistance to expansion (i.e., lower compliance) than the first section.
Abstract:
A method of making a catheter balloon or other expandable medical device, and a balloon or other device formed thereby, in which at least a portion of a tubular, wrapped sheet of polymeric material is heated with laser radiation to form a fused seam extending along at least a section of the length of the tubular body. In one embodiment, the portion of the sheet heated by laser radiation is less than the entire area of the sheet, so that the fused seam is formed by heating portions of the sheet without heating sections of the sheet spaced apart from the fused seam. In one embodiment, the sheet of polymeric material comprises a polymer having a porous and preferably a node and fibril microstructure, which in one embodiment is selected from the group consisting of expanded polytetrafluoroethylene (ePTFE) and expanded ultra high molecular weight polyethylene.
Abstract:
The present invention provides partially crystallizing lead-free and cadmium-free glass enamel composition that fuse at low temperatures. Glass enamel compositions according to the present invention form predominantly bismuth titanate and optionally zinc titanate crystals upon firing. Preferably, glass enamel compositions according to the invention include a glass component that includes by weight from about 11% to about 52% SiO2, from 10.2% to about 40% TiO2, from about 5% to about 75% Bi2O3, up to about 8% B2O3, up to about 14% BaO+SrO, and up to about 45% by weight ZnO, where the sum of Bi2O3 and ZnO comprises from about 30% to about 85% of the glass component by weight.
Abstract translation:本发明提供在低温下熔化的部分结晶的无铅和无镉玻璃搪瓷组合物。 根据本发明的玻璃搪瓷组合物在烧制时主要形成钛酸铋和钛酸锌晶体。 优选地,根据本发明的玻璃搪瓷组合物包括玻璃组分,其重量含量为约11%至约52%SiO 2,10.2%至约40%TiO 2 / >,约5%至约75%的Bi 2 O 3,至多约8%的B 2 O 3 3 / ,高达约14%的BaO + SrO和至多约45重量%的ZnO,其中Bi 2 O 3 N 3和ZnO的总和包含约30重量% %至约85%的玻璃组分。
Abstract:
The present invention provides high temperature sealing glass compositions for use in producing mechanically and chemically durable electrically insulating hermetic glass seals between materials such as zirconia, alumina, fosterite, steatite, carbon steels, stainless steels, and superalloys. High temperature sealing glass compositions according to the present invention include a glass component and optional vehicles. The glass component includes one or more glass frits containing in weight percent from about 17% to about 56% BaO+SrO, from about 18% to about 60% SiO.sub.2, from about 6% to about 36% B.sub.2 O.sub.3, from about 2% to about 32% Al.sub.2 O.sub.3, from about 0% to about 25% CaO plus MgO, from about 0% to about 20% Y.sub.2 O.sub.3, from about 0% to about 7% ZrO.sub.2, from about 0% to about 3% alkali oxides, from about 0% to about 5% Co.sub.3 O.sub.4, from about 0% to about 5% NiO, and from about 0% to about 3% MoO.sub.3. Upon firing, high temperature sealing glass compositions of the present invention produce mechanically and chemically durable hermetic glass seals which exhibit electrical resistance of greater than about 30 megaohms when measured at room temperature.
Abstract translation:本发明提供了高温密封玻璃组合物,用于在诸如氧化锆,氧化铝,福斯特,滑石,碳钢,不锈钢和超级合金的材料之间生产机械和化学耐久的电绝缘的密封玻璃密封。 根据本发明的高温密封玻璃组合物包括玻璃组分和任选的载体。 该玻璃组分包括一种或多种玻璃料,其重量百分比含有约17%至约56%的BaO + SrO,约18%至约60%的SiO 2,约6%至约36%的B 2 O 3,约2%至 约32%的Al 2 O 3,约0%至约25%的CaO加MgO,约0%至约20%的Y 2 O 3,约0%至约7%的ZrO 2,约0%至约3%的碱金属氧化物, 0%至约5%的Co 3 O 4,约0%至约5%的NiO和约0%至约3%的MoO 3。 在烧制时,本发明的高温密封玻璃组合物产生机械和化学耐久的密封玻璃密封件,其在室温下测量时表现出大于约30兆欧姆的电阻。
Abstract:
The present invention provides a new and improved coating composition for use in forming a dielectric layer upon a section of metal upon firing. The coating composition includes a glass composition, said glass composition comprising in weight percent a combined weight of BaO and SrO of from about 15% to about 75%, from about 5% to about 35% B.sub.2 O.sub.3, from about 10% to about 40% SiO.sub.2, up to about 10% Al.sub.2 O.sub.3, up to about 7% Co.sub.3 O.sub.4, up to about 20% ZnO, up to about 20% TiO.sub.2, up to about 7% P.sub.2 O.sub.5, up to about 7% CuO, up to about 7% Fe.sub.2 O.sub.3, up to about 7% NiO, a combined weight of SnO, MoO.sub.3, WO.sub.3, Sb.sub.2 O.sub.5, of up to about 20%, up to about 20% Bi.sub.2 O.sub.3, a combined weight of up to about 20% Nb.sub.2 O.sub.5, La.sub.2 O.sub.3, Y.sub.2 O.sub.3 and CeO.sub.2, up to about 5% ZrO.sub.2, up to about 20% CaO, up to about 5% MgO, up to about 2% As.sub.2 O.sub.3 and a combined weight of up to about 3% Li.sub.2 O, Na.sub.2 O and K.sub.2 O.
Abstract translation:本发明提供了一种新的和改进的涂料组合物,用于在烧制时在一段金属上形成电介质层。 涂料组合物包括玻璃组合物,所述玻璃组合物以重量百分比计包含约15%至约75%,约5%至约35%的B 2 O 3,约10%至约40%的BaO和SrO的组合重量, SiO 2,至多约10%的Al 2 O 3,至多约7%的Co 3 O 4,至多约20%的ZnO,至多约20%的TiO 2,至多约7%的P 2 O 5,至多约7%的CuO,至多约7%的Fe 2 O 3 ,高达约7%的NiO,SnO,MoO 3,WO 3,Sb 2 O 5的组合重量,最多约20%,至多约20%Bi 2 O 3,组合重量至多约20%的Nb 2 O 5,La 2 O 3,Y 2 O 3和CeO 2 ,高达约5%的ZrO 2,至多约20%的CaO,至多约5%的MgO,至多约2%的As 2 O 3和最多约3%的Li 2 O,Na 2 O和K 2 O的组合重量。
Abstract:
A method of sealing at least two inorganic substrates together using an induction energy source comprising applying to at least one of the substrates a paste composition including a glass frit, and an induction coupling additive, bringing at least a second substrate into contact with the paste composition, and subjecting the substrates and paste to induction heating, thereby forming a hermetic seal between the two inorganic substrates.
Abstract:
Broadband infrared radiation is used to heat and fuse an enamel paste to form an enamel seal between at least two solid substrates such as glass, ceramic or metal.
Abstract:
Solar cell contacts having good electrical performance are made by a process involving: (a) providing a silicon wafer substrate; (b) providing a paste comprising: (i) aluminum, (ii) glass frit, and (iii) a separate and distinct amount of at least one oxide, such that, together with the aluminum, the glass frit and oxide forms a paste having an exothermic reaction peak, at a temperature of at least 660° C. to less than 900° C., (c) applying the paste to the silicon wafer substrate to form a coated substrate, and (d) firing the coated substrate for a time and at a temperature sufficient to sinter the aluminum and fuse the glass frit and oxide.
Abstract:
Formulations and methods of making solar cell contacts and cells therewith are disclosed. The invention provides a photovoltaic cell comprising a front contact, a back contact, and a rear contact. The back contact comprises, prior to firing, a passivating layer onto which is applied a paste, comprising aluminum, a glass component, wherein the aluminum paste comprises, aluminum, another optional metal, a glass component, and a vehicle. The back contact comprises, prior to firing, a passivating layer onto which is applied an aluminum paste, wherein the aluminum paste comprises aluminum, a glass component, and a vehicle.