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4011099 |
Preparation of damage-free surface on alpha-alumina
A chemical polishing process for alpha-alumina utilizing a silica colloid polishing fluid which is both a reactant and a medium for the removal of the reaction product is disclosed.
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4007020 |
Refractory abrasive body containing chromium oxide and method of producing it
A new ceramic treatment process and product and, more particularly, a process for forming and treating and shaping and treating of porous skeletal bodies to produce hardened dimensionally stable...
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3986847 |
Vitreous bonded cubic boron nitride abrasive articles
A vitreous bonded cubic boron nitride grinding wheel is provided which optionally contains silicon carbide or other abrasive having a coefficient of thermal expansion substantially the same as the...
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3982911 |
Process for the preparation of a composite cubic boron nitride layer abrasive body
Cubic boron nitride (CBN) crystals of graded particle size are chemically cleaned and disposed in a protective metal cup together with a mass of substrate source material and a concentration of...
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3971169 |
Method for repairing selenium photoreceptors
Disclosed is a composition and method for repairing a damaged electrostatographic photoreceptor comprised of a conductive substrate with a uniform layer of selenium or a selenium alloy on its...
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3966432 |
Liquid abrasive compositions containing a silicate suspending agent
There is disclosed a liquid abrasive composition comprising an aqueous suspension of a substantially water-insoluble particulate abrasive, a nonionic surfactant and a suspending agent selected from...
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3951619 |
Method of making a grinding wheel
A grinding wheel has a series of deep and narrow circumferential grooves between circular grinding sections having radially convex surfaces for forming serrations in a knife edge. The grooves are...
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3939613 |
Impacting process
The treatment of hard surfaces by impacts of fine hard granules continually bombarded against them, as for peening, brightening, texturizing, compacting, reforming and/or cleaning adhesions from...
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3939612 |
Reinforced grinding wheel
The disclosure illustrates a grinding wheel that is reinforced by a length of wire positioned on the side faces of the wheel in a spiral pattern beginning adjacent the inner diameter with...
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3934988 |
Aluminum silicate particles having a layer of a rare earth oxide thereon
Polishing powders, for use particularly in the optical industry, are based upon alumina silicate materials, the particles of which are coated with rare earth oxide. The polishing powders are...
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3922393 |
Process for polishing silicon and germanium semiconductor materials
There is provided a process for polishing monocrystalline semiconductor materials of silicon and germanium to a high degree of surface perfection comprising polishing the material with a modified...
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3916584 |
Spheroidal composite particle and method of making
Composite abrasive granules, in which fine, hard abrasive grains are distributed throughout a relatively softer metal oxide matrix, can be substituted for conventional abrasive grains. In a...
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3913280 |
Polycrystalline diamond composites
A polycrystalline diamond composite and method having diamond to diamond bonds formed between adjacent diamond particles. The composite is produced by mixing diamond particles with a sintering aid...
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3913281 |
Ball grinding ceramic wheel containing manganese dioxide
Mixtures of abrasive grains and bond compositions within a given range are shown for making ceramic grinding wheels containing predominantly alumina abrasive grits in a fired clay bond having...
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3881890 |
Abrasive boron nitride particles containing phosphorus
A tough cubic boron nitride crystal having greater-than-usual impact resistance is prepared by effecting the catalytic transformation of soft hexagonal boron nitride into cubic boron nitride in the...
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3877183 |
Method of polishing semiconductor surfaces
Method of polishing semiconductor surfaces with mechanical polishing agents, in which said polishing agents are precipitated silicates and/or silicofluorides.
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3874129 |
Process for the production of haze-free semiconductor surfaces
Producing semiconductors with exceptionally smooth haze-free surfaces in a multistage polishing process wherein polishing the semiconductor with a first and conventional polishing agent containing...
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3874856 |
Porous composite of abrasive particles in a pyrolytic carbon matrix and the method of making it
A composite product and method of producing same, having abrasive or refractory particles held together by a binder in which the composite product is treated to form the binder into a porous...
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3863401 |
Diamond abrasive cut-off wheel
Segmented diamond abrasive cutoff blades, the segments thereof characterized by their cutting surfaces having substantially uniform linear or lateral serrations.
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3852049 |
VITREOUS-BONDED CUBIC BORON NITRIDE ABRASIVE GRINDING SYSTEM
A vitreous-bonded cubic boron nitride abrasive grinding system for wet grinding is described utilizing borosilicate glass in combination with a metal filler. The metal is selected from the class...
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3847568 |
VITRIFIED ABRASIVE ELEMENT
A vitrified abrasive element such as a grinding wheel made from a mixture of (1) abrasive grit composed primarily of aluminum oxide (Al 2 O 3 ), (2) a ceramic bonding material which may include...
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3819387 |
HEAT DEVITRIFIABLE GLASS
Heat-devitrified glass having high mechanical strength and extremely well-suited for ballotini is prepared from inexpensive constituents, such as sand, alumina or feldspar, dolomite and limestone....
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3816086 |
ABRADING MIXTURE
An abrasive mixture for abrading material from the surface of a workpiece is provided with improved cutting characteristics and lower temperature operating capability along with ease of cleaning...
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3816085 |
DIAMOND-NONDIAMOND CARBON POLYCRYSTALLINE COMPOSITES
Diamond-nondiamond carbon polycrystalline composites particularly useful as abrasives are made by sintering diamond particles at temperatures above about 1440°K but at pressures below which...
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3808747 |
MECHANICAL FINISHING AND MEDIA THEREFOR
This invention is addressed to mechanical finishing and media therefor wherein the finishing media are formed of geometric shapes of bauxite particles which have been sintered at a temperature...
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3807979 |
QUATERNARY AMMONIUM SILICATE FOR POLISHING SILICON METAL
I have developed an improved composition for use in the very exacting procedure of polishing soft thin wafers such as silicon which is to be used as a semi-conductor. This composition is a blend of...
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3792553 |
ABRASIVE POWDER OF FUSED ALUMINA CONTAINING VANADIUM TETROXIDE
Excellent abrasive materials are provided by incorporating between about 0.1 and 7.5 percent, preferably 0.25 and 5.0 percent, and optimally about 1.5 percent by weight of vanadium tetroxide into a...
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3775068 |
GLASS POLISHING AGENT OF SODIUM ZIRCONIUM SILICATE
Sodium hydroxide or sodium carbonate is mixed with zircon, and heated to a temperature preferably about 2,200°F for 6 hours, and then the product is preferably wet-milled, adding phosphoric acid...
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3770401 |
PHOSPHATE-BONDED GRINDING WHEEL
An abrasive body of grit-size particles of alumina or silicon carbide held together by a water-insoluble aluminum phosphate bonding matrix, which body is of increased strength through its phosphate...
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3765923 |
PROCESS AND COMPOSITION FOR BLAST-CLEANING AND CORROSION-PROTECTING METAL SURFACES
A process and composition for blast-cleaning metal surfaces, particularly steel surfaces, and simultaneously depositing a corrosion protective metal thereon. Abrasive particles carrying a...
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3763603 |
ALUMINUM OXIDE PRESSURE BLASTING ABRASIVES AND METHOD OF MAKING
An improved pressure blasting product adapted for cleaning and peening operations in general but having a particular use in a method of shot peening objects made of aluminum. A substantially solid...
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3754878 |
ABRASIVE CLEANING COMPOSITIONS
This disclosure relates to abrasive cleansing compositions having particular utility as a metallic stain remover from hard surfaces such as porcelain, comprising an oxidant capable of oxidizing the...
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3754941 |
REMOVAL OF METALLIC STAINS FROM PORCELAIN SURFACES
This disclosure relates to cleansing compositions having particular utility as a metallic stain remover from hard surfaces such as porcelain, comprising an oxidant capable of oxidizing the metal in...
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3715842 |
SILICA POLISHING COMPOSITIONS HAVING A REDUCED TENDENCY TO SCRATCH SILICON AND GERMANIUM SURFACES
Alkaline aqueous silica polishing compositions are provided, having a reduced tendency to scratch silicon and germanium surfaces, such as single crystal wafers polished for use in semiconductors....
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3685218 |
GLASS POLISHING COMPOSITIONS BASED ON ZIRCON AND/OR ZIRCONIA AND ZIRCONIUM FLUOSULFATE AND POLISHING PROCESS USING THE SAME
Synergistic glass polishing compositions are provided comprising zirconium oxide and/or zirconium silicate as the polishing oxides, and a zirconium fluosulfate as an additive enhancing the...
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3662501 |
METHOD FOR POLISHING MAGNETIC OXIDE MATERIALS
This invention relates to a method of polishing magnetic oxides or bubble crystal surfaces to a featureless and strain-free condition. The method comprises pre-polishing or lapping with a...
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3650714 |
A METHOD OF COATING DIAMOND PARTICLES WITH METAL
Titanium (or zirconium) coated single diamonds have high cohesion bonding between coating and diamond and have external surfaces adhesion-receptive to subsequently applied less oxidizable metal,...
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3647381 |
DENTAL-PROPHYLAXIS COMPOSITION
This invention is concerned with a dental-prophylaxis composition including particulate zirconium silicate having unique distribution of particle sizes.
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3622288 |
METHOD FOR THE PRODUCTION OF BONDED ABRASIVE DISC WHEELS
A method is provided for producing bonded abrasive disc wheels with surface discontinuities therein having a uniform density throughout. The surface discontinuities are produced on the upper...
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3615305 |
DENTAL AMALGAM POLISHING COMPOSITION COMPRISING STANNOUS SILICATE
Polishing compositions comprising stannous silicate, SnSiO 3 , having particles laying in the range of up to about 90 microns as an essential active ingredient are useful in polishing amalgam...
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3615302 |
THERMOSET-RESIN IMPREGNATED HIGH-SPEED VITREOUS GRINDING WHEEL
A porous vitreous bonded high-speed abrasive grinding wheel in which between about 95 percent and 100 percent of the pore volume of either the annular portion of the wheel adjacent to the wheel...
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3549341 |
METHOD FOR PRODUCING PYRAMIDAL SHAPED TUMBLING MEDIA
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3541739 |
COATED ABRASIVE CONTAINING AN OVER-SIZE LAYER OF A METAL HALIDE
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3541017 |
DENTURE CLEANSER PREPARATIONS COMPRISING ZIRCONIUM SILICATE AND ZIRCONIUM DIOXIDE
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3540891 |
HOUSEHOLD CLEANING AND POLISHING COMPOSITION
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3539315 |
METHOD OF MAKING A VITRIFIED GRANULAR ABRASIVE ELEMENT
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3535832 |
VITRIFIED BONDED WHEEL FOR ELECTROCHEMICAL GRINDING CONTAINING CONDUCTIVE METAL AND A THERMOSET POLYMER FILLER
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3527028 |
PREPARATION OF SEMICONDUCTOR SURFACES
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3525600 |
ABRASIVE GRAINS COATED WITH A CERAMIC AND A SILICONE RESIN
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3524286 |
RESIN BONDED ABRASIVE WHEELS CONTAINING FIBROUS AND NON-FIBROUS FILLERS
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