摘要:
A method for making an alpha prime SiAlON-based ceramic article, including the steps of providing an admixture of starting materials and densifying said admixture. The admixture includes: beta silicon nitride; a source of aluminum selected from the group consisting of aluminum nitride, alumina, and mixtures thereof; at least one oxide compound; and a plurality of alpha prime SiAlON seeds.
摘要:
Ceramics comprising (i) at least one of Nb2O5 or Ta2O5 and (ii) at least two of (a) Al203, (b) REO, or (c) at least one of ZrO2 or HfO2. Embodiments of ceramics according to the present invention can be made, formed as, or converted into optical waveguides, glass beads, articles (e.g., plates), fibers, particles (e.g., abrasive particles), and thin coatings.
摘要翻译:陶瓷包括(i)Nb 2 O 5 O 5或Ta 2 O 5 5中的至少一种和(ii) (a)Al 2 O 3 3,(b)REO中的至少两种,或(c)ZrO 2或HfO 2中的至少一种 2 SUB>。 根据本发明的陶瓷的实施例可以由玻璃珠,制品(例如板),纤维,颗粒(例如磨料颗粒)和薄涂层制成或形成光波导。
摘要:
Transparent fused crystalline ceramic, and methods of making and using the same. Embodiments of transparent fused crystalline ceramics according to the present invention are useful, for as abrasive particles, reflective and optical components, and as grinding and sand blasting media.
摘要:
Methods for making glass-ceramics comprising Al2O3, REO, at least one of ZrO2 or HfO2 and at least one of Nb2O5 or Ta2O5. Glass-ceramics according to the present invention can be made, formed as, or converted into glass beads, articles (e.g., plates), fibers, particles, and thin coatings. Some embodiments of glass-ceramic particles according to the present invention can be are particularly useful as abrasive particles.
摘要翻译:制造包含Al 2 O 3,REO,ZrO 2或HfO 2以及Nb 2 O 5或Ta 2 O 5中的至少一种的玻璃陶瓷的方法。 根据本发明的玻璃陶瓷可以制成,形成为玻璃珠或制成玻璃珠,制品(例如板),纤维,颗粒和薄涂层。 根据本发明的玻璃 - 陶瓷颗粒的一些实施方案可以特别用作磨料颗粒。
摘要:
Ceramic cutting tools and cutting tool inserts comprising a continuous glass-ceramic matrix and a dispersed phase selected from the group consisting of carbides, borides, nitrides, diamond, and combinations thereof.
摘要:
Disclosed herein is a ceramic comprising: at least two different metal oxides, the at least two different metal oxides comprising TiO2 and La2O3 or TiO2 and BaO; less than 20% by weight SiO2; less than 20% by weight B2O3; and less than 40% by weight P2O5; the ceramic having a glass transition temperature, Tg, and a crystallization onset temperature, Tx, and the difference between Tg and Tx is at least 5K. The ceramic may comprise additional metal oxides. Also disclosed herein is a method of making an article using the ceramic; typically, the ceramic is heated above the Tg, shaped, and then cooled.
摘要翻译:本文公开了一种陶瓷,其包括:至少两种不同的金属氧化物,所述至少两种不同的金属氧化物包含TiO 2和La 2 O 3 O 3, 或TiO 2和BaO; 小于20重量%的SiO 2; 小于20重量%的B 2 O 3 3; 和小于40重量%的P 2 O 5 O 5; 具有玻璃化转变温度T T和结晶起始温度T x x的陶瓷,以及T T> T和T < SUB> x SUB>至少为5K。 陶瓷可以包含另外的金属氧化物。 本文还公开了使用陶瓷制造制品的方法; 通常,将陶瓷加热到高于T g,成型,然后冷却。
摘要:
Presently described are retroreflective articles, such as pavement markings, that comprise transparent microspheres partially embedded in a (e.g. polymeric) binder. Also described are (e.g. glass-ceramic) microspheres, methods of making microspheres, as well as compositions of glass materials and compositions of glass-ceramic materials. The microspheres generally comprise lanthanide series oxide(s), titanium oxide (TiO2), and optionally zirconium oxide (ZrO2).