专利检索_ 砂浆混凝土人造石或陶瓷的后处理;天然石的处理专利检索_ 砂浆混凝土人造石或陶瓷的后处理;天然石的处理专利检索查询

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序号	专利名	申请号	申请日	公开（公告）号	公开（公告）日	发明人
201	Aluminum oxide sintered body, and members using same for semiconductor and liquid crystal manufacturing apparatuses	US11064889	2005-02-23	US20050187094A1	2005-08-25	Masaki Hayashi
An aluminum oxide sintered body contains aluminum oxide in an amount of not less than 99% by weight and at least one selected from magnesium oxide, calcium oxide and silicon oxide, and contains phosphorus of not more than 0.0025 parts by weight to 100 parts by weight of the aluminum oxide sintered body. This avoids that phosphorous exerts adverse effect on the sintering properties of an aluminum oxide sintered body, especially the sintering properties of a large aluminum oxide sintered body, causing the sintered body to lack uniformity between the sintered body inner portions and outer portions. Therefore, this aluminum oxide sintered body is suitably used in semiconductor manufacturing apparatus members or liquid crystal manufacturing apparatus members.
202	Method for surface modification of oxide ceramics using glass and surface modifed oxide ceramics thereof	US10763002	2004-01-22	US20050104264A1	2005-05-19	Seong-Jai Cho; Min-Cheol Chu; Hyun-Min Park; Kyung-Jin Yoon
A method for surface modification of oxide ceramics including the alumina ceramics used as heat resistant parts, wear resistant parts, the semiconductor fabricating parts, etc., and oxide ceramics produced by the method, in which the surface modification is carried out by permeating a glass into the surface of the oxide ceramics through heat treatment, so that the flexural strength, the heat resistance, and the wear resistance may be improved and the surface cracks may be cured. The surface modification method for oxide ceramics includes the step for carrying out heat treatment for the oxide ceramics and the glass at 1000-1700° C. for several seconds to several hours by using a heating element such as an electric heating furnace. According to the surface modification method for the oxide ceramics, the strength, the heat resistance, and the wear resistance of the oxide ceramics may be improved by simple procedure at a low cost.
203	Method of supplying electric current to prestressed concrete	US09763859	2001-02-28	US06524465B1	2003-02-25	Masanobu Ashida; Kouichi Ishibashi
A method of electrochemical treatment of prestressed concrete which comprises supplying a direct current between a steel embedded in the prestressed concrete as a cathode and an anode on the surface or inside of the concrete at a voltage higher than the hydrogen evolution potential, wherein an effective tensile force acting on the PC steel tendon embedded in the concrete is not greater than 80 % of the tensile strength of the PC steel tendon, and a method of electrochemical treatment of prestressed concrete which comprises supplying a direct current between a steel tendon embedded in the prestressed concrete as a cathode and an anode on the surface or inside of the concrete at a voltage higher than the hydrogen evolution potential, wherein the voltage is adjusted to less than the hydrogen evolution potential at least once during electrochemical treatment.
204	Zirconia particles	US09259532	1999-03-01	US06319868B1	2001-11-20	Mary Susan Jean Gani; Hans-Jurgen Wirth; Marie Isabel Aguilar; Milton Thomas William Hearn; Donald George Vanselow; Philip Hong Ning Cheang; Kjell-Ove Eriksson
Porous zirconia or zirconium-containing particles, methods of making such particles and methods of using such particles including modifications to the surface of the particles are described. The method comprises heating zirconia particles to provide a substantially homogeneously liquid melt, quenching the particles of melt to effect spinodal decomposition to provide quench particles of a silica rich phase and a zirconia rich phase, annealing the quenched particles to provide non porous solid particles of zirconia and silica and, leaching the silica from these particles to produce porous solid zirconia particles comprising a three dimensionally substantially continuous interpenetrating network of interconnected pores.
205	Method of producing silicon nitride ceramic component	US429067	1995-04-26	US5599493A	1997-02-04	Yasushi Ito; Takehisa Yamamoto; Takao Nishioka; Akira Yamakawa; Osamu Komura
A method of producing a silicon nitride ceramic component, comprising: grinding a silicon nitride sintered body comprising .alpha.--Si.sub.3 N.sub.4 having an average grain size of 0.5 .mu.m or smaller and .beta.'-sialon having an average grain size of 3 .mu.m or smaller in major axis and 1 .mu.m or smaller in minor axis into a predetermined size with a surface roughness of 1-7 .mu.m in ten-point mean roughness; heat treating the same at temperature range of 800.degree.-1200.degree. C. in the air; and standing it to allow to be cooled, whereby providing a residual stress in the ground surface before and after the heat treating as a residual compressive stress at a ratio of 1 or higher of the residual compressive stress after the heat treating to that before the heat treating (residual compressive stress after the heat treating/residual compressive stress before the heat treating), preferably 5 or more.
206	Method for producing a durable tactile warning surface	US911901	1992-07-10	US5320790A	1994-06-14	Michael Lowe
A patterned tool and method for producing a durable tactile warning surface for sidewalks and other walkways including pouring a concrete base, applying pigmented or colored hardener to the upper surface of the concrete base, stamping the upper surface of the concrete base with the patterned tool including a substantially flat member having a plurality of symmetrically disposed recesses of a predetermined diameter and depth formed on the lower surface thereof and a plurality of corresponding vent channels formed through the substantially flat member in communication with each corresponding recess and curing the concrete base to form a durable tactile warning surface including a plurality of symmetrically disposed raised elements of a predetermined diameter, height and spacing corresponding to the plurality of recesses to produce an uneven surface visually contrasting with adjacent surface areas.
207	Electro-chemical method for minimizing or preventing corrosion of reinforcement in concrete, and related apparatus	US781989	1991-10-24	US5320722A	1994-06-14	John B. Miller
A process and system for rehabilitating mature concrete structures, which have become carbonated and/or infused with chlorides and thus represent a corrosive environment for internal reinforcing steel. The surface of the concrete is first repaired with a special mortar having resistivity and capilarity consistent with the parent concrete and the process requirements. An elongated, flat, flexible, ribbon-like electrode element is supported in spaced relation over the surface of a concrete area to be treated, being threaded back and forth and oriented in edgewise fashion to the concrete surface. Thereafter a self-adherent, cohesive mixture of delignified cellulose pulp fibers and a liquid electrolyte solution is sprayed onto the surface of the concrete, to a level to cover and embed the ribbon-like electrode element, forming an electrolytic medium associated with the electrode element. A DC voltage is impressed between the internal reinforcement and the embedded electrode element to effect electro-chemical chloride removal and/or realkalization of the concrete in a procedure of finite time duration. Preferably, the electrode strip is passed about conductive supports at one side of the treating area, so that the voltage is connected to the electrode strip at a plurality of locations. Flame and smoulder retardants are mixed with the dry cellulose fibers in advance of being applied to the concrete, by spraying through the previously mounted electrode structure.
208	Method for fabricating a ceramic fiber reinforced composite material	US801436	1991-12-02	US5296171A	1994-03-22	Francois Christin; Didier Mocaer; Rene Pailler
A method of fabricating a composite material including a matrix reinforced by ceramic fibers which are derived by ceramization of an organometallic precursor. The method includes the steps of irradiating the ceramic fibers with electromagnetic radiation of wavelength less than or equal to the wavelength of x-rays, and then impregnating or infiltrating a preform made of the irradiated ceramic fibers with a matrix forming material to form the composite. The method provides fibers and hence a composite material with improved mechanical behavior.
209	Method of thermochemically treating silicon carbide fibers derived from polymers	US837014	1992-02-18	US5230848A	1993-07-27	Jay S. Wallace; Barry A. Bender; Darla Schrodt
Silicon carbide fibers which are derived from oligomeric and/or polymeric ecursors are modified and strengthened by annealing the silicon carbide fiber at temperatures in excess of 800.degree. C. under a nitrogen atmosphere in the presence of carbon particles. The modified fibers can be used to make ceramic, metal, and plastic composites.
210	Process for modifying the surface of hard engineering ceramic materials	US488009	1990-05-07	US5128083A	1992-07-07	Christopher A. Brookes
A process for modifying the surface of a hard engineering ceramic material by applying a point or line load to the surface of the hard engineering ceramic material by a second material such as to cause plastic deformation of the hard engineering ceramic material. The second material can be repeatedly traversed across the surface of the hard engineering ceramic material. The process is advantageously applied to a first engineering component fabricated from the hard engineering ceramic material and a second engineering component fabricated from the second material. The second material may also be a hard engineering ceramic material, and may be of the same hardness as the hard engineering ceramic material to be treated. The first and second components can be used in a tribological application and between them define a point or line contact such that in use the second engineering component reshapes the surface of the first engineering component. The first engineering component may comprise a piston ring and the second engineering component may comprise a piston cylinder, or vice-versa.
211	Process for modifying porous material having open cells	US667407	1991-04-08	US5126103A	1992-06-30	Kozo Ishizaki; Shojiro Okada; Takao Fujikawa; Atsushi Takata
The invention provides a process for modifying a ceramic and/or metallic porous material having open cells necessary for the material to serve the function of gas diffusing materials, filters or the like. The porous material is subjected to hot isostatic pressing at a temperature at which the base portion of the porous material softens or melts to compact or homogenize the base portion.
212	Material for polarizable electrode	US653157	1991-02-11	US5082594A	1992-01-21	Yasushi Tsuzuki; Toshio Tanaka; Yasuhiro Iizuka
A material is provided for a polarizable electrode. The material comprises a porous carbon material of activated carbon, activated carbon fibers, carbon fibers or powdery carbon as a raw material, wherein the total amount of acid groups of said porous carbon materials is 0.45 to 4.0 .mu.eq/m.sup.2 based on the BET surface area of said carbon material. The material is produced by subjecting the porous carbon raw material to dry oxidation treatment in an oxygen atmosphere whereby the total amount of acid groups introduced into said porous carbon material is 0.45 to 4.0 .mu.eq/m.sup.2 based on the BET surface area of said material.
213	Layered silicates and water-resistant articles made therefrom	US428725	1989-10-30	US5049237A	1991-09-17	Walter J. Bohrn; Richard A. Brubaker; Shelly N. Garman; Lewis K. Hosfeld; Kenneth K. Ko; Thomas M. Tymon
Disclosed are flocced mineral materials which may be utilized to prepare high temperature resistant, water resistant articles. These materials are prepared by utilizing, as a starting material, a gellable layered swelled silicate that has an average charge per structural unit that ranges from about -0.4 to -1 and which contains interstitial cations which promote swelling with a source of at least one species of multiamine derived cations.
214	Method for electrochemical treatment of porous building materials, particularly for drying and re-alkalization	US364580	1989-06-09	US5015351A	1991-05-14	John B. Miller
An electro-osmotic dewatering procedure is disclosed for removing water from saturated, porous building materials, such as concrete, brick and the like. A controlled, cyclical voltage is applied to an electrode system, to effect osmotic migration of water from an anode electrode, located within the structure or in contact with it, to a cathode electrode, typically spaced from the structure but in electrical circuit with it. The cycle of operations includes a first energy pulse in a direction to effect osmotic migration, followed by a substantially shorter but definite pulse of reverse polarity to prevent or minimize formation of insulating gas films and/or corrosion products. Transition from the primary pulse to the reverse pulse, and from the reverse pulse to the subsequent primary pulse, is at a controlled rate to permit discharge of stored voltage, as a function of inherent capacitance of the system, and to avoid generation of RFI radiations. For treating reinforced concrete, cycling is preferably controlled automatically, as a function of the monitored passivity or non-passivity of the internal reinforcement, so as to avoid creation of corrosion products. Certain aspects of the invention are applicable to other treatments of reinforced concrete, such as realkalization.
215	Multi-ply composites and sheets of epoxy and flocced 2:1 layered silicates	US339410	1989-04-14	US4990405A	1991-02-05	Walter J. Bohrn; Shelly N. Garman; Thomas M. Tymon
Sheets and laminated composites are described which are prepared with epoxy and flocculated vermiculite and mica dispersions. Processes and procedures are also described to obtain film and sheet materials from the flocculated silicate and epoxy dispersions.
216	Process for the manufacture of thin plates with low binding strength	US050890	1987-05-15	US4952343A	1990-08-28	Norbert Gerharz; Eduard Kessler; Albert Kleinevoss; Hans Kleudgen; Jochen Kopia; Bernd Stein
Very thin plates of ceramic material with low binding strength are difficult to manufacture, since the stability of the moldings is very low, so that they can hardly be fed to a subsequent treatment stage after shaping. Therefore, after the ceramic material is molded into plate-shaped moldings, these moldings are pushed onto a flat carrier in the plane of their plate surface and are heated on it for a few minutes, so that iron sulfates form, which impart dimensional stability to the moldings.
217	Method of making and using selective conductive regions in diamond layers	US321219	1989-03-09	US4929489A	1990-05-29	Gisela A. M. Dreschhoff; Edward J. Zeller
A diamond lattice substrate is irradiated with a high energy particle of sufficient flux, energy level and time period to irreversibly transform an area of a plane normal to the axis of irradition into conductive graphite. The substrate is cooled during irradiation to confine the graphite to the area of the plane at a desired depth within the substrate.
218	Hydronium (H.sub.3 O.sup.+) polycrystalline superionic conductors and method (ion exchange) of making same	US653888	1984-09-25	US4586991A	1986-05-06	Patrick S. Nicholson; Kimihiro Yamashita
An hydronium polycrystalline superionic conductor, having the formula (H.sub.3 O.sup.+,Na.sup.+).sub.5 (Re)Si.sub.4 O.sub.12, where Re=Y or Gd, is produced from precursor material being Na.sub.5 YSi.sub.4 O.sub.12 or Na.sub.5 GdSi.sub.4 O.sub.12. In order to accomplish the aforesaid a range of intermediate ceramics may be produced replacing part of the precursor ceramic sodium by ions of elements in 1A group of the Periodic Table that have an atomic weight above 32 and preferably ions of potassium, cesium, or mixtures of potassium and cesium.To produce the superionic hydronium polycrystalline ceramic conductor and the intermediate ceramic from the feed ceramics aforesaid, the feed ceramic is placed in a chloride melt wherein part of the sodium in the feed ceramic lattice is replaced by an appropriate cation from the melt such as potassium and cesium. Subsequently, a field assisted ionic exchange takes place to now replace the interceded potassium and cesium ions with the hydronium (H.sub.3 O.sup.+) ion, whereby the aforesaid hydronium, superionic, solid polycrystalline ceramic conductor is achieved.
219	Method for preparing Pb-.beta."-alumina ceramic	US645651	1984-08-30	US4585635A	1986-04-29	Eric E. Hellstrom
A process is disclosed for preparing impermeable, polycrystalline samples of Pb-.beta."-alumina ceramic from Na-.beta."-alumina ceramic by ion exchange. The process comprises two steps. The first step is a high-temperature vapor phase exchange of Na by K, followed by substitution of Pb for K by immersing the sample in a molten Pb salt bath. The result is a polycrystalline Pb-.beta."-alumina ceramic that is substantially crack-free.
220	Tungsten carbide reactive process	US356104	1982-03-08	US4477009A	1984-10-16	Richard M. Walker
A process of identifying and cleaning carbide entities. In the preferred embodiment of this invention, a visual indicating reacting composition is placed in a tank. An example of such a compound is a weak solution on the order to magnitude of one tenth molar or less of copper sulfate. After preparation of this bath, a large plurality of used tungsten carbide tools are dumped into the bath. Tools are allowed to sit in the bath for periods extending from five seconds to several hours depending on the strength of the bath and the thickness of the coating. When a characteristic orange color appears on a significant plurality of the tools sitting in the bath, the tank is drained of the copper sulfate solution and the tools are dumped upon a flat surface for visual inspection and segregation of the copper colored tools from the clear ones. After segregation, the copper colored tools are placed in a second bath. The second bath comprises a weak acidic solution with pH of the order of magnitude of less than 7 and more than 5. Extremely dilute acid such as nitric acid may be used in such a bath. In the second bath, once the copper colored tools are placed in the bath, the acid reacts with the copper colored reactant on the tools to dissolve said reactant and render the tool clear and clean. In this bath other contaminants or foreign matter are removed from the surface of the tool.

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