摘要:
Irregularly-shaped glass fibers and insulation therefrom comprising two different glasses having differing coefficients of thermal expansion. The irregularly-shaped dual-glass fibers exhibit a substantially uniform volume filling nature, and provide improved recovery and thermal conductivity abilities even in the absence of a binder material.
摘要:
Mineral fiber compositions with increased levels of SiO.sub.2 and reduced levels of Al.sub.2 O.sub.3 and Fe.sub.2 O.sub.3 compositions are suitable for insulation. The compositions have high temperature resistance and high biosolubility, yet have properties which allow current processes to fabricate them into insulation. The mineral fibers also meet proposed German regulations regarding K1.gtoreq.40.
摘要翻译:具有增加的SiO 2水平和降低的Al 2 O 3和Fe 2 O 3组成的矿物纤维组合物适用于绝缘。 该组合物具有耐高温性和高生物溶解性,但具有允许当前工艺将其制成绝缘的性质。 矿物纤维也符合德国关于K1> / = 40的规定。
摘要:
Irregularly shaped glass fibers and insulation therefrom comprise two different glasses having differing coefficients of thermal expansion. These glasses also have physical properties which allow current processes to fabricate them into insulation. The glasses also meet German recommendations regarding a KI value of 40 or above.
摘要:
Provided is a process for making metal coated non-crystallized, amorphous glass fibers. The process fiberizes a glass containing a metal oxide such as cuprous oxide. The process then heat-treats the fibers to form a semi-conductive layer of copper oxide on the surface. A subsequent reactive reduction step produces a semi-continuous film of metallic copper. This is conductive enough for many radar applications.
摘要:
Fiberizable glass composition with increased levels of BaO are suitable for insulation. These glasses have physical properties which allow current processes to fabricate them into insulation. The glasses also meet proposed German regulations regarding KI.gtoreq.40.
摘要:
Crystallization-resistant, low liquidus, fluoride glasses are disclosed which consist essentially of ZrF.sub.4, optionally HfF.sub.4, BaF.sub.2, at least one of CsF or NaF, preferably AlF.sub.3 and LaF.sub.3, and at least one of InF.sub.3, YF.sub.3 and GaF.sub.3. The glasses are of utility as optical components because of their high IR transmission.
摘要:
Ion exchangeable glass compositions containing from 50 to 90 mole percent GeO.sub.2, from 5 to 30 mole percent Al.sub.2 O.sub.3, from 3 to 30 mole percent Li.sub.2 O, up to 30 mole percent Na.sub.2 O and up to 30 mole percent K.sub.2 O are provided. In another aspect, minor amounts of anhydrous fluorides and chlorides corresponding to these oxides are added to the glass compositions to aid in water removal. Glass articles formed of the germanate glass compositions of the present invention are readily ion exchangeable when contacted with certain salts. Strengthened germanate glass articles are also provided having an inner tension region and an outer compressive surface layer which provide good mechanical strength for the formed glass article. The strengthened germanate glass articles are made using the ion exchangeable germanate glass compositions of the present invention. The compressive surface layer of the strengthened germanate glass articles are formed by contacting the surface of the glass article with a suitable salt, preferably a molten alkali salt, in an ion exchange process. The surface compressive layer of the strengthened germanate glass article has a lower concentration of lithium ions than the inner tension region and has a higher concentration of select ions provided by the salt bath.
摘要:
Disclosed is a process for preparing fluorescent inorganic glasses containing Nd.sub.2 O.sub.3 as a fluorescent species and containing MnO as a sensitizer but containing essentially no higher oxides of manganese. In the disclosed process an internal reducing agent is employed in the melting of the glass and such agent reduces the higher oxides of manganese upon cooling of the melt.
摘要翻译:公开了一种制备含有Nd 2 O 3作为荧光物质并含有MnO作为敏化剂但基本上不含较高的锰的氧化物的荧光无机玻璃的方法。 在所公开的方法中,使用内部还原剂来熔化玻璃,并且这种试剂在熔化物冷却时还原了较高的锰氧化物。