WO2006107116A1 - 酸化セリウム系研磨材、その製造方法及び用途 - Google Patents
酸化セリウム系研磨材、その製造方法及び用途 Download PDFInfo
- Publication number
- WO2006107116A1 WO2006107116A1 PCT/JP2006/307525 JP2006307525W WO2006107116A1 WO 2006107116 A1 WO2006107116 A1 WO 2006107116A1 JP 2006307525 W JP2006307525 W JP 2006307525W WO 2006107116 A1 WO2006107116 A1 WO 2006107116A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rare earth
- cerium oxide
- slurry
- light rare
- particles
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B37/00—Lapping machines or devices; Accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B13/00—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F17/00—Compounds of rare earth metals
- C01F17/20—Compounds containing only rare earth metals as the metal element
- C01F17/206—Compounds containing only rare earth metals as the metal element oxide or hydroxide being the only anion
- C01F17/224—Oxides or hydroxides of lanthanides
- C01F17/235—Cerium oxides or hydroxides
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/14—Anti-slip materials; Abrasives
- C09K3/1409—Abrasive particles per se
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/90—Other morphology not specified above
Definitions
- Cerium oxide-based abrasive its production method and use
- the present invention relates to a cerium oxide abrasive used for polishing glass or the like, a method for producing the same, and an application thereof. More specifically, the present invention relates to a glass substrate for a display panel such as a liquid crystal display panel, and a magnetic device.
- the present invention relates to a cerium oxide-based abrasive used for surface polishing of a glass substrate for disks, a method for producing the same, and a method for using the same.
- glass materials have been used for various purposes. Among these, optical lenses; glass substrates for recording media for optical disks and magnetic disks; plasma display panels (PDP), thin film transistor (TFT) type liquid crystal display (LCD) panels, and twisted nematics (TN) LCD panel glass substrates for LCD panels, etc .; Color filters for LCD TVs; Photomask glass substrates for LSIs, etc. Flatness, small surface roughness, and defect-free high-precision surface polishing are required. Yes. While these glass substrates are increasingly required to have a highly accurate surface, they are also required to reduce substrate manufacturing costs.
- PDP plasma display panels
- TFT thin film transistor
- TN twisted nematics
- the above-mentioned displays are used in monitors such as desktop PC monitors, LCD TVs, mobile phones, notebook PCs, personal digital assistants, digital still cameras, etc.
- Magnetic disks are mainly used in hard disk hard disks.
- materials such as cerium oxide, zirconium oxide, iron oxide, and silicon dioxide have been used for a long time.
- cerium oxide-based abrasives mainly composed of cerium oxide are mainly used because of their high polishing efficiency.
- the cerium oxide abrasive can be manufactured using ores such as bastonite concentrate as the starting material.
- ores such as bastonite concentrate
- the impurities in basinsite concentrate are removed using physicochemical separation and then pulverized. Adjust the particle size and dry. Next, it is fired at 60 to 100 in a rotary kiln or a shuttle kiln, pulverized, classified, and re-adjusted to obtain a cerium oxide abrasive.
- the light rare earth carbonate raw material is pulverized and made into a slurry, which is then partially fluorinated by adding hydrofluoric acid, and then calcined (Japanese Patent Laid-Open No. 9 1 8 3 9 6 6). Gazette), light rare earth salt is calcined once to obtain rare earth oxide, this rare earth oxide is pulverized and treated with mineral acid, then treated with fluorinated ammonium and calcined. 6 9 4 5 5), a method of adding a rare earth fluoride to a rare earth oxide, and performing wet pulverization, drying, firing, and classification (Japanese Patent Laid-Open No. 2 0 2 — 2 2 4 9 4 9) Proposed.
- a precipitation agent is added to the cerium-containing light rare earth salt solution to precipitate fine light rare earth salt particles in order to eliminate the need for a pulverization process or to greatly simplify the pulverization process.
- a method is proposed in which the slurry is obtained, the size of the particles in the resulting slurry is adjusted, fluorinated, the slurry is separated into solid and liquid, and the solid component obtained is roasted and manufactured. (Japanese Patent Laid-Open No. 2000-0 3-7 1 2 6 7).
- these materials Generally have a large particle size, and therefore must be pulverized by a wet ball mill or the like.
- many processes must be performed for drying, firing, crushing, classification, and the like. In general, both of these processes are performed in a batch process, requiring manual labor. Therefore, the manufacturing cost of the abrasive cannot be kept low.
- a fluorine-containing substance such as fluorinated ammonium or hydrofluoric acid
- the fluorination reaction proceeds abnormally fast in the subsequent firing step. Abnormal grains grow and coarse particles are formed, and coarse particles may be mixed in the abrasive.
- the present invention provides a polishing material for polishing glass and the like with good quality and low cost, and a method for manufacturing the same, in order to manufacture a glass substrate with high surface accuracy at low cost.
- the inventors of the present invention have achieved high-precision polished surfaces that are inexpensive, have good production efficiency, have a high polishing rate, have few scratches, and have low surface roughness.
- the inventors have found an abrasive for polishing glass and the like and a method for producing the same.
- the present invention is as follows.
- a precipitant is added to an aqueous solution of a cerium-containing light rare earth salt to precipitate the light rare earth salt (including light rare earth hydroxides in the present invention), and the average particle size is 0. 1 to 3 m of light rare earth's salt particles Obtaining a first slurry having,
- a fluorinating agent is added to a slurry containing light rare earth salt particles having an average particle size of 0.1 to 3 m, the light rare earth salt and the fluorinating agent are reacted, and the average particle size is 0. obtaining a second slurry containing 1 to 3 m of light rare earth fluoride particles;
- a method for producing a cerium oxide-based abrasive is provided.
- cerium-containing light rare earth salt aqueous solution in step (a) is physicochemically separated and removed from the ore containing rare earth elements impurities other than rare earth elements and Nd or higher rare earth elements.
- At least one light rare earth salt particle of steps (a) and (b) is selected from the group consisting of carbonate, hydroxide, oxalate and mixtures thereof, 1) A method for producing a cerium oxide abrasive according to any one of items (3) to (3).
- the method includes washing after the precipitation of the light rare earth salt particles to remove impurities other than the light rare earth salt, (1) to (5) above.
- the cerium oxide abrasive according to any one of Manufacturing method.
- step (d) further comprises classification.
- a method for polishing a glass substrate comprising polishing a glass substrate using the cerium oxide-based abrasive according to (9) above.
- the method of the present invention by using fine light rare earth salt particles and light rare earth fluoride particles close to the product particle size of the abrasive, a conventional wet pulverization step is not required, and the production is simple. This makes it possible to produce a cerium oxide abrasive at an efficient and inexpensive production cost.
- cerium oxide-based abrasive of the present invention an object to be polished having a good quality polished surface with few scratches and small surface roughness can be obtained at a high polishing rate.
- the method for producing a cerium oxide-based abrasive comprises: (a) adding a precipitant to an aqueous solution of a cerium-containing light rare earth salt to precipitate a salt of the light rare earth, and the average particle size is 0.1 to 3; a step of obtaining a first slurry containing m light rare earth salt particles; (b) fluorination into a slurry containing light rare earth salt particles having an average particle size of 0.1 to 3 mm; (C) a step of obtaining a second slurry containing light rare earth fluoride particles having an average particle size of 0.:! To 3 m. Mixing the first slurry and the second slurry to obtain a mixed slurry; and (d) drying and firing the mixed slurry and optionally classifying the mixed slurry.
- the aqueous solution of cerium-containing light rare earth salt used in the step (a) of the method for producing a cerium oxide-based abrasive of the present invention mainly comprises cerium (C e), lanthanum (L a), praseodymium (P r), and neodymium.
- rare earth concentrates containing (N d), etc. physicochemically contain components other than rare earth elements such as alkali metals, alkaline earth metals and radioactive materials, and rare earth elements with neodymium (N d) weight More specifically, when obtaining an aqueous solution of cerium-containing light rare earth salt from rare earth concentrate, such ore is roasted with sulfuric acid to produce sulfate, and this sulfuric acid is obtained. Dissolve salt in water to remove alkaline earth metals, radioactive materials, etc. as insoluble materials.
- the medium heavy rare earth means a rare earth having an atomic number larger than P m (promethium).
- P m promethium
- the composition when using a basinite ore alone, the composition is relatively simple, so it is common to achieve this separation and removal by a separation method by dissolving rare earth components in sulfuric acid or concentrated hydrochloric acid.
- a separation method by dissolving rare earth components in sulfuric acid or concentrated hydrochloric acid.
- a solvent extraction method is generally used as a method for chemically separating and removing medium heavy rare earth and Nd.
- the precipitant used in the method for producing a cerium oxide abrasive of the present invention is any precipitant capable of precipitating light rare earth salt particles when added to an aqueous solution of a cerium-containing light rare earth salt. .
- a carbonate such as sodium carbonate or ammonium bicarbonate, a hydroxide such as ammonium hydroxide, or oxalic acid is used. It is possible to precipitate oxalate and the like. In particular, it is preferable to obtain a light rare earth carbonate using ammonium bicarbonate because it is easy to handle.
- the deposition conditions are controlled so that the average particle diameter of the particles obtained by the precipitation is 0.1 to 3 m.
- the final abrasive average particle size can be easily adjusted to 0.1 to 3 m.
- the polishing rate may be decreased. Also if the final abrasive average particle size exceeds 3'm A lot of scratches may be generated on the polished surface.
- the particle size of the light rare earth salt to be precipitated is the concentration and temperature of the cerium-containing light rare earth salt solution, the stirring speed and time, the type and concentration of the precipitant, and the solution of the cerium-containing light rare earth salt solution. It can be adjusted by controlling the processing conditions such as the dropping speed of the liquid.
- the first slurry obtained by precipitating light rare earth salt particles may be washed with decantation or the like to remove impurities other than light rare earth salt particles. Can do.
- the slurry containing the light rare earth salt particles used in the step (b) of the method for producing a cerium oxide abrasive of the present invention is the same as that shown for the step (a), that is, cerium. It can be obtained by adding a precipitant to an aqueous solution of the light rare earth salt contained and precipitating the light rare earth salt.
- a part of the first slurry can be used separately.
- the fluorinating agent used in the step (b) of the method for producing a cerium oxide abrasive according to the present invention may be any compound capable of fluorinating a salt of a light rare earth in a slurry, such as hydrofluoric acid, fluorinated Ammonium, acidic fluorinated ammonium, etc. can be used. Also here, the light rare earth salts in the slurry can be substantially fully or partially fluorinated.
- the light rare earth fluoride obtained here has a total rare earth content of about 60 to 75 mass% and / or a fluorine content of 20 to 30 mass% when dried at 400. Is desirable. ⁇ Mixed slurry>
- the first slurry containing the light rare earth salt particles and the second slurry are preferably mixed in a wet state.
- partial fluoride is obtained by adding fluorinated ammonium, hydrofluoric acid, etc. to the light rare earth salt.
- the fluorination reaction proceeds slowly in the subsequent firing step, so there is no abnormal grain growth, and there is no formation of localized coarse particles, It is advantageous to obtain an abrasive of good quality that does not contain coarse particles in the abrasive.
- a stirrer, a high-speed stirrer, or the like can be used. If necessary, they may be mixed with a pulverizer such as a wet ball mill, an attritor, or a bead mill. However, in the method of the present invention, a desired particle size distribution can be achieved without using such a pulverizer. Without the use of a pulverizer, the number of steps can be reduced, and the problem that foreign matter mixed from the pulverizing medium or the like causes scratches during polishing can be avoided.
- the mixing amount of the light rare earth fluoride with respect to the salt of the light rare earth is preferably adjusted so that the fluorine content contained in the finally obtained cerium oxide-based abrasive is 0.1 to 10% by mass. .
- washing may be performed to remove impurity ions dissolved in the mixed slurry. I like it.
- the mixed slurry is usually washed with water until the impurity ions are removed by repeating the decantation several times.
- a reagent may be added to obtain a mixture slurry having a small impurity content after washing.
- the cerium oxide-based abrasive is basically produced by drying and firing, and optionally crushing and classifying without pulverizing the mixture slurry. It may be accompanied by a grinding process of the mixture slurry.
- a centrifuge, an electric furnace, a shuttle kiln, or a mouth kiln can be used, and it is particularly preferable to use a mouth kiln. Drying and firing can be performed in the air, which is an oxidizing atmosphere.
- the drying and firing temperature requires 400 ° C. or more in order to convert the cerium-containing light rare earth into a rare earth oxide, and is generally from 600 to 130 ° C., preferably 70 Set in the range of ⁇ 1 2 0 0. Then, optionally, the fired product is crushed and classified to obtain a cerium oxide abrasive.
- a crusher such as a method of colliding with an impact plate or the like and a method of colliding with each other can be used, but is not limited thereto. It is preferable that the crushing be carried out dry.
- a wind classifier or the like can be used, but is not limited to this.
- the cerium oxide-based abrasive of the present invention obtained as described above preferably has a total rare earth content of 90% by mass or more in terms of oxide. In addition, it is desirable that 40% by mass or more, more preferably 60% by mass or more is cerium in terms of oxide based on the total rare earth contained.
- the fluorine content of the cerium oxide abrasive is preferably 0.1 to 10% by mass.
- the cerium oxide abrasive of the present invention is usually dispersed in a dispersion medium such as water to form a slurry of about 50 to 30% by mass. If necessary, water-soluble organic solvents such as ethylene glycol and small polyethylene glycol can be used, but water is usually used.
- a substance having a polishing promoting effect on glass for example, an amino acid-based compound such as arginine, an anion such as melamine, triethanolamine and the like.
- An organic acid such as a compound, citrate, tartaric acid, lingoic acid, and darconic acid may be added.
- a glass substrate or the like is polished using the cerium oxide abrasive of the present invention.
- ammonium bicarbonate solution in which ammonium bicarbonate was dissolved in pure water and adjusted to a concentration of 5 O g ZL was added dropwise with stirring, and stirring was continued for 2 h. Then, a light rare earth carbonate mainly composed of cerium oxide was precipitated to obtain a first slurry containing light rare earth carbonate particles. The light rare earth carbonate in the first slurry was sampled and the average particle size (D 50) was measured and found to be 2.O ⁇ m.
- the second slurry containing light rare earth fluoride particles was added and mixed. After stirring for 2 h, in order to remove impurities dissolved in the slurry, stirring was stopped once to allow the mixture to settle, and then the supernatant was removed. After adding pure water to this, stirring for 2 hours, once stirring was stopped, the mixture was allowed to settle, and then the supernatant was removed five times. Finally, the supernatant was removed for concentration to remove impurity ions.
- a mixture slurry having an average particle diameter (D 50) not containing 2.0 m was prepared.
- D 50 is a particle diameter corresponding to a cumulative value of 50% of the volume distribution measured using Cole Yuichi Multisizer I I E type (manufactured by Cole Yuichi).
- cerium oxide abrasive was dispersed in water to prepare a slurry having a concentration of 10% by mass.
- alkali-free glass area 75 m 2
- TFT thin film transistor
- Polishing testing machine 4-way double-side polishing machine Number of processed sheets: 6 sheets Batch X 2
- Polishing pad Polyurethane foam pad (MHC 15 A made by Dale Nibuta)
- the polished glass was taken out from the polishing machine and subjected to ultrasonic cleaning with pure water. Then, it was washed with pure water and dried.
- the thickness before and after polishing was measured at 4 locations per sheet, and the measured values of 4 points x 6 sheets were averaged to obtain a polishing rate. (; Um Z min) was calculated.
- Um Z min was calculated.
- the surface of the glass substrate was visually observed to determine the number of scratches per polished surface.
- the center line average surface roughness of the glass surface was measured with a rank tailor made by Rank Taylor Hobson.
- Table 1 shows the average particle diameter D 50 of the particles in the mixture slurry, the average particle diameter D 50 of the abrasive particles, the polishing rate, the scratches, and the center line average surface roughness Ra.
- Example 2 In the same manner as in Example 1, a cerium oxide abrasive was produced. However, in Example 2, the temperature of the light rare earth chloride solution was adjusted to 40 to obtain a light rare earth carbonate slurry (average particle diameter D 50: 2.5 m) in which light rare earth carbonate was precipitated. Then, a dilute aqueous solution of hydrofluoric acid was added dropwise to obtain a second slurry (average particle diameter D 50: 2.m) containing light rare earth fluoride particles. Here is the resulting 'mixture slurry in The average particle size (D 50) of the particles was 2.5 ⁇ m. The average particle diameter (D 50) of the cerium oxide-based abrasive obtained here is 2.0 m.
- Example 3 the light rare earth carbonate slurry in which the light rare earth carbonate solution was precipitated by adjusting the temperature of the light rare earth chloride solution to 25 ° C. (average particle diameter D 50: 1.8 m) Then, hydrofluoric acid was added to obtain a second slurry (average particle diameter D 50: 1.8 m) containing light rare earth fluoride particles.
- the average particle diameter (D 5 ⁇ ) of the particles in the obtained mixture slurry was 1.8 m.
- the average particle diameter (D 50) of the cerium oxide abrasive obtained here was 1.4 m.
- the obtained cerium oxide abrasive was treated in the same manner as in Example 1. Polishing was performed and polishing evaluation was performed. The results are shown in Table 1.
- Example 4 the light rare earth carbonate solution for the first and second slurries was deposited by adjusting the temperature of the light rare earth chloride solution to 20 ° C.
- the average particle diameter (D 50) of the particles in the light rare earth carbonate, light rare earth fluoride, and mixture slurry was 1.2 m.
- the average particle diameter (D 50) of the cerium oxide abrasive obtained here was 1.0 m.
- Example 2 In the same manner as in Example 1, a cerium oxide abrasive was produced. However, in Comparative Example 1, the light rare earth carbonate for the first and second slurries was deposited by adjusting the temperature of the light rare earth chloride solution to 60 ° C. Here, the average particle size (D 50) force of light rare earth carbonate, light rare earth fluoride, and mixture slurry was ⁇ 4.O ⁇ m. Further, the average particle diameter (D 50) of the cerium oxide abrasive obtained here was 3.2 m.
- Bath Tonesite (average particle size D 5 0: 4 0 m) l
- the pulverized slurry was dried with a drier, fired at 90 ° C. in a rotary kiln, and pulverized and classified to obtain a cerium oxide abrasive.
- the average particle size (D 50) of the cerium oxide abrasive obtained here was 1.4 m.
- the fluorine content of the cerium oxide-based abrasive finally obtained in a slurry containing light rare earth carbonate particles (average particle diameter D 50: 1.8 m) was obtained.
- a cerium oxide abrasive was obtained.
- the average particle diameter (D 50) of the cerium oxide-based abrasive obtained here was 1.4 m.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2006800109455A CN101155891B (zh) | 2005-04-04 | 2006-04-04 | 氧化铈系研磨材料、其制造方法及用途 |
US11/887,910 US7722692B2 (en) | 2005-04-04 | 2006-04-04 | Cerium oxide-based abrasive, and production method and use thereof |
JP2006544162A JP3929481B2 (ja) | 2005-04-04 | 2006-04-04 | 酸化セリウム系研磨材、その製造方法及び用途 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005-107637 | 2005-04-04 | ||
JP2005107637 | 2005-04-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006107116A1 true WO2006107116A1 (ja) | 2006-10-12 |
Family
ID=37073645
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/307525 WO2006107116A1 (ja) | 2005-04-04 | 2006-04-04 | 酸化セリウム系研磨材、その製造方法及び用途 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7722692B2 (ja) |
JP (1) | JP3929481B2 (ja) |
CN (1) | CN101155891B (ja) |
TW (1) | TWI338036B (ja) |
WO (1) | WO2006107116A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009227893A (ja) * | 2008-03-25 | 2009-10-08 | Mitsui Mining & Smelting Co Ltd | セリウム系研摩材スラリー |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103080256B (zh) * | 2010-09-08 | 2015-06-24 | 巴斯夫欧洲公司 | 用于化学机械抛光包含氧化硅电介质和多晶硅膜的衬底的含水抛光组合物和方法 |
CN103189331B (zh) | 2010-11-01 | 2014-07-30 | 昭和电工株式会社 | 氧化铝质烧结体的制造方法、氧化铝质烧结体、磨粒和砂轮 |
JP2015120844A (ja) * | 2013-12-24 | 2015-07-02 | 旭硝子株式会社 | 研磨剤の製造方法、研磨方法および半導体集積回路装置の製造方法 |
CN105038604A (zh) * | 2015-06-01 | 2015-11-11 | 华东理工大学 | 一种含氟稀土复合氧化物的组成及制备方法 |
KR102090494B1 (ko) | 2015-09-25 | 2020-03-18 | 쇼와 덴코 가부시키가이샤 | 세륨계 연마재 및 그 제조 방법 |
WO2018022129A1 (en) * | 2016-07-27 | 2018-02-01 | Iowa State University Research Foundation, Inc. | Separating rare earth metal oxalates |
CN106978090A (zh) * | 2017-04-20 | 2017-07-25 | 德米特(苏州)电子环保材料有限公司 | 一种氟化稀土抛光粉的制备方法 |
CN111566179B (zh) * | 2017-11-15 | 2022-03-04 | 圣戈本陶瓷及塑料股份有限公司 | 用于实施材料去除操作的组合物及其形成方法 |
CN109111856B (zh) * | 2018-08-24 | 2021-01-19 | 甘肃稀土新材料股份有限公司 | 一种镧铈钇稀土抛光粉及其制备工艺 |
JP7074644B2 (ja) * | 2018-10-31 | 2022-05-24 | 信越化学工業株式会社 | 合成石英ガラス基板の研磨用研磨粒子の製造方法、並びに合成石英ガラス基板の研磨方法 |
CN112500801B (zh) * | 2020-12-24 | 2021-12-07 | 德米特(苏州)电子环保材料有限公司 | 一种铈基稀土抛光粉及其制备方法和应用 |
CN112724837A (zh) * | 2020-12-28 | 2021-04-30 | 包头市明芯科技有限公司 | 一种高性能3d玻璃用稀土抛光粉干法制备工艺 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09183966A (ja) * | 1995-12-29 | 1997-07-15 | Seimi Chem Co Ltd | セリウム研摩材の製造方法 |
JPH11269455A (ja) * | 1998-03-24 | 1999-10-05 | Mitsui Mining & Smelting Co Ltd | セリウム系研摩材の製造方法 |
JP2002129147A (ja) * | 2000-10-20 | 2002-05-09 | Mitsui Mining & Smelting Co Ltd | セリウム系研摩材の製造方法及びセリウム系研摩材 |
JP2002224949A (ja) * | 2000-11-30 | 2002-08-13 | Showa Denko Kk | セリウム系研磨材及びその製造方法 |
JP2002302668A (ja) * | 2001-12-28 | 2002-10-18 | Seimi Chem Co Ltd | セリウム研摩材の製造方法 |
JP2002302667A (ja) * | 2001-12-28 | 2002-10-18 | Seimi Chem Co Ltd | セリウム研摩材の製造方法 |
JP2002317173A (ja) * | 2001-04-20 | 2002-10-31 | Mitsui Mining & Smelting Co Ltd | セリウム系研摩材の製造方法及びセリウム系研摩材 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2722471A (en) * | 1952-10-30 | 1955-11-01 | Molybdenum Corp | Method for the separation of rare earths |
US4497785A (en) * | 1983-11-18 | 1985-02-05 | Union Oil Company Of California | Production of rare earth compounds |
US6221118B1 (en) * | 1996-09-30 | 2001-04-24 | Hitachi Chemical Company, Ltd. | Cerium oxide abrasive and method of polishing substrates |
US6986798B2 (en) | 2000-11-30 | 2006-01-17 | Showa Denko K.K. | Cerium-based abrasive, production process thereof |
JP2002371267A (ja) | 2001-06-15 | 2002-12-26 | Mitsui Mining & Smelting Co Ltd | セリウム系研摩材粒子の製造方法及びセリウム系研摩材粒子 |
TWI313707B (en) * | 2003-04-17 | 2009-08-21 | Mitsui Mining & Smelting Co | Cerium-based abrasive |
JP3875668B2 (ja) * | 2003-08-26 | 2007-01-31 | 三井金属鉱業株式会社 | フッ素を含有するセリウム系研摩材およびその製造方法 |
-
2006
- 2006-04-04 JP JP2006544162A patent/JP3929481B2/ja not_active Expired - Fee Related
- 2006-04-04 TW TW095111981A patent/TWI338036B/zh not_active IP Right Cessation
- 2006-04-04 CN CN2006800109455A patent/CN101155891B/zh not_active Expired - Fee Related
- 2006-04-04 WO PCT/JP2006/307525 patent/WO2006107116A1/ja active Application Filing
- 2006-04-04 US US11/887,910 patent/US7722692B2/en active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09183966A (ja) * | 1995-12-29 | 1997-07-15 | Seimi Chem Co Ltd | セリウム研摩材の製造方法 |
JPH11269455A (ja) * | 1998-03-24 | 1999-10-05 | Mitsui Mining & Smelting Co Ltd | セリウム系研摩材の製造方法 |
JP2002129147A (ja) * | 2000-10-20 | 2002-05-09 | Mitsui Mining & Smelting Co Ltd | セリウム系研摩材の製造方法及びセリウム系研摩材 |
JP2002224949A (ja) * | 2000-11-30 | 2002-08-13 | Showa Denko Kk | セリウム系研磨材及びその製造方法 |
JP2002317173A (ja) * | 2001-04-20 | 2002-10-31 | Mitsui Mining & Smelting Co Ltd | セリウム系研摩材の製造方法及びセリウム系研摩材 |
JP2002302668A (ja) * | 2001-12-28 | 2002-10-18 | Seimi Chem Co Ltd | セリウム研摩材の製造方法 |
JP2002302667A (ja) * | 2001-12-28 | 2002-10-18 | Seimi Chem Co Ltd | セリウム研摩材の製造方法 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009227893A (ja) * | 2008-03-25 | 2009-10-08 | Mitsui Mining & Smelting Co Ltd | セリウム系研摩材スラリー |
Also Published As
Publication number | Publication date |
---|---|
TWI338036B (en) | 2011-03-01 |
CN101155891B (zh) | 2012-07-04 |
US20090035202A1 (en) | 2009-02-05 |
JPWO2006107116A1 (ja) | 2008-10-02 |
JP3929481B2 (ja) | 2007-06-13 |
US7722692B2 (en) | 2010-05-25 |
TW200704761A (en) | 2007-02-01 |
CN101155891A (zh) | 2008-04-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP3929481B2 (ja) | 酸化セリウム系研磨材、その製造方法及び用途 | |
JP6421887B2 (ja) | セリウム塩の製造方法、酸化セリウム及びセリウム系研磨剤 | |
JP6489491B2 (ja) | セリウム系研磨材及びその製造方法 | |
JP3949147B2 (ja) | 混合希土類酸化物、混合希土類フッ素化物及びそれらを用いたセリウム系研磨材、並びにそれらの製造方法 | |
WO2002044300A2 (en) | Cerium-based abrasive and production process thereof | |
TWI303661B (en) | Cerium-based abrasive and stock material therefor | |
JP3694478B2 (ja) | セリウム系研磨材及びその製造方法 | |
JP2002371267A (ja) | セリウム系研摩材粒子の製造方法及びセリウム系研摩材粒子 | |
JP4131870B2 (ja) | 研磨材粒子の品質評価方法、ガラス研磨方法及びガラス研磨用研磨材組成物 | |
KR102423338B1 (ko) | 세륨계 연마재용 원료의 제조 방법, 및 세륨계 연마재의 제조 방법 | |
JP3875668B2 (ja) | フッ素を含有するセリウム系研摩材およびその製造方法 | |
TWI285674B (en) | Cerium-based abrasive and production process thereof | |
JP3607592B2 (ja) | セリウム系研摩材の製造方法及びセリウム系研摩材 | |
JP4394848B2 (ja) | セリウム系研摩材の製造方法及びセリウム系研摩材 | |
JP4290465B2 (ja) | 酸化セリウムを主成分とするセリウム系研摩材の製造方法 | |
JP2002327171A (ja) | セリウム系研摩材の製造方法 | |
JP2002309235A (ja) | セリウム系研摩材用原料の製造方法及びその方法により製造されるセリウム系研摩材用原料 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200680010945.5 Country of ref document: CN |
|
ENP | Entry into the national phase |
Ref document number: 2006544162 Country of ref document: JP Kind code of ref document: A |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 11887910 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
NENP | Non-entry into the national phase |
Ref country code: RU |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 06731472 Country of ref document: EP Kind code of ref document: A1 |