摘要:
A fiber-reinforced sealing article disposed between an upper sand mold portion (cope) and lower sand mold portion (drag) to fill in, or correct irregularities in green sand molds. In casting metal shapes in a sand/binder mold, the cope and/or drag mold portions include sand compositions that are not perfectly planar surrounding the mold cavity, leaving one or more areas where the cope and drag are not in contact or otherwise provide a seal surrounding the mold cavity. The fiber-reinforced clay-containing article described herein is disposed between the cope and drag to seal the mold in one or more locations surrounding the mold cavity. The composition described herein is capable of shaping by hand, like modeling clay; and the article is preferably in the form of a continuous rope that is flexible, remains hydrated, and can be cut or broken to a desired length and disposed in area(s) where the cope and drag do not make good mating contact.
摘要:
Compositions and methods for planarizing or polishing a surface, particularly a semiconductor wafer surface. The polishing compositions described herein comprise (a) a liquid carrier; (b) purified clay; and optional additives, such as (c) a chemical accelerator; and (d) a complexing or coupling agent capable of chemically or ionically complexing with, or coupling to, the metal and/or insulating material removed during the polishing process. The complexing or coupling agent carries away the removed metal and/or silicon dioxide insulator particles, during polishing, to prevent the separated particles from returning to the surface from which they were removed. Also disclosed are methods of planarizing or polishing a surface comprising contacting the surface with the compositions.
摘要:
Compositions and methods for planarizing or polishing a surface, particularly a semiconductor wafer surface. The polishing compositions described herein comprise (a) a liquid carrier; (b) purified clay; and optional additives, such as (c) a chemical accelerator; and (d) a complexing or coupling agent capable of chemically or ionically complexing with, or coupling to, the metal and/or insulating material removed during the polishing process. The complexing or coupling agent carries away the removed metal and/or silicon dioxide insulator particles, during polishing, to prevent the separated particles from returning to the surface from which they were removed. Also disclosed are methods of planarizing or polishing a surface comprising contacting the surface with the compositions.
摘要:
Compositions and methods for planarizing or polishing a corundum, GaAs, GaP or GaAs/GaP alloy surface, particularly a semiconductor wafer surface. The polishing compositions described herein comprise (a) a liquid carrier; (b) a smectite clay, preferably a sodium smectite clay; and optional additives, such as (c) CeO2, SiO2 and/or Al2O3 abrasive particles, (d) a chemical accelerator; and (e) a complexing or coupling agent capable of chemically or ionically complexing with, or coupling to, the material removed during the polishing process. The optional complexing or coupling agent carries away the removed particles, during polishing, to prevent the separated particles from returning to the surface from which they were removed. Also disclosed are methods of planarizing or polishing corundum, GaAs, GaP and GaAs/GaP alloy surfaces comprising contacting the surface with the compositions.
摘要:
A composition for planarizing or polishing a surface comprising (a) a liquid carrier, and (b) solids comprising about 0.1 to about 10% by weight clay abrasive particles, and about 0.1% to about 50% by weight CeO2 particles, based on the total weight of solids in the composition, said clay and CeO2 abrasive particles having a particle size such that at least 90% of the particles (by number), when slurried in water, have a particle size in the range of about 10 nm to about 10 μm.
摘要翻译:用于平坦化或抛光表面的组合物,其包含(a)液体载体,和(b)包含约0.1至约10重量%的粘土磨料颗粒和约0.1重量%至约50重量%的CeO 2 / SUB>颗粒,基于组合物中固体的总重量,所述粘土和CeO 2 O 3研磨颗粒具有使得至少90%的颗粒(数量)的颗粒,当浆料 在水中,具有在约10nm至约10um范围内的粒度。
摘要:
Compositions and methods for planarizing or polishing a surface, particularly a semiconductor wafer surface. The polishing compositions described herein comprise (a) a liquid carrier; (b) purified clay; and optional additives, such as (c) a chemical accelerator; and (d) a complexing or coupling agent capable of chemically or ionically complexing with, or coupling to, the metal and/or insulating material removed during the polishing process. The complexing or coupling agent carries away the removed metal and/or silicon dioxide insulator particles, during polishing, to prevent the separated particles from returning to the surface from which they were removed. Also disclosed are methods of planarizing or polishing a surface comprising contacting the surface with the compositions.
摘要:
Compositions and methods for planarizing or polishing a corundum, GaAs, GaP or GaAs/GaP alloy surface, particularly a semiconductor wafer surface. The polishing compositions described herein comprise (a) a liquid carrier; (b) a smectite clay, preferably a sodium smectite clay; and optional additives, such as (c) CeO2, SiO2 and/or Al2O3 abrasive particles, (d) a chemical accelerator; and (e) a complexing or coupling agent capable of chemically or ionically complexing with, or coupling to, the material removed during the polishing process. The optional complexing or coupling agent carries away the removed particles, during polishing, to prevent the separated particles from returning to the surface from which they were removed. Also disclosed are methods of planarizing or polishing corundum, GaAs, GaP and GaAs/GaP alloy surfaces comprising contacting the surface with the compositions.
摘要:
A composition for planarizing or polishing a surface comprising (a) a liquid carrier, and (b) solids comprising about 0.1 to about 10% by weight clay abrasive particles, and about 0.1% to about 50% by weight CeO2 particles, based on the total weight of solids in the composition, said clay and CeO2 abrasive particles having a particle size such that at least 90% of the particles (by number), when slurried in water, have a particle size in the range of about 10 nm to about 10 μm.
摘要翻译:用于平坦化或抛光表面的组合物,其包含(a)液体载体,和(b)包含约0.1至约10重量%的粘土磨料颗粒和约0.1重量%至约50重量%的CeO 2 / SUB>颗粒,基于组合物中固体的总重量,所述粘土和CeO 2 O 3研磨颗粒具有使得至少90%的颗粒(数量)的颗粒,当浆料 在水中,具有在约10nm至约10um范围内的粒度。
摘要:
A composition for planarizing or polishing a surface comprising (a) a liquid carrier, and (b) solids comprising about 0.1 to about 10% by weight clay abrasive particles, and about 0.1% to about 50% by weight CeO2 particles, based on the total weight of solids in the composition, said clay and CeO2 abrasive particles having a particle size such that at least 90% of the particles (by number), when slurried in water, have a particle size in the range of about 10 nm to about 10 μm.
摘要翻译:用于平坦化或抛光表面的组合物,其包含(a)液体载体,和(b)包含约0.1至约10重量%的粘土磨料颗粒和约0.1重量%至约50重量%的CeO 2 / SUB>颗粒,基于组合物中固体的总重量,所述粘土和CeO 2 O 3研磨颗粒具有使得至少90%的颗粒(数量)的颗粒,当浆料 在水中,具有在约10nm至约10um范围内的粒度。
摘要:
Compositions and methods for planarizing or polishing a NiP, glass, ceramic or Glass-ceramic surface in the manufacture of a computer memory disk. The polishing compositions described herein comprise (a) a liquid carrier, preferably water; (b) an abrasive; (c) purified clay; and optional additives, such as (d) a chemical accelerator or oxidizing agent; and (e) a complexing or coupling agent capable of chemically or ionically complexing with, or coupling to, the NiP, glass, ceramic, and/or glass-ceramic material removed during the polishing process. The complexing or coupling agent carries away the metal, glass, ceramic and/or glass-ceramic particles removed during polishing, to prevent the separated particles from returning to the surface from which they were removed. Also disclosed are methods of planarizing or polishing a NiP, glass, ceramic and/or glass-ceramic surface comprising contacting the surface with the compositions.