JP5562842B2 - 異方性バルク材料の製造方法 - Google Patents
異方性バルク材料の製造方法 Download PDFInfo
- Publication number
- JP5562842B2 JP5562842B2 JP2010509356A JP2010509356A JP5562842B2 JP 5562842 B2 JP5562842 B2 JP 5562842B2 JP 2010509356 A JP2010509356 A JP 2010509356A JP 2010509356 A JP2010509356 A JP 2010509356A JP 5562842 B2 JP5562842 B2 JP 5562842B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic particles
- viscoplastic
- viscoplastic material
- magnetic
- magnetic field
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/16—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay
- C04B35/18—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay rich in aluminium oxide
- C04B35/185—Mullite 3Al2O3-2SiO2
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/04—Clay; Kaolin
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/16—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay
- C04B35/18—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay rich in aluminium oxide
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/62605—Treating the starting powders individually or as mixtures
- C04B35/62625—Wet mixtures
- C04B35/6263—Wet mixtures characterised by their solids loadings, i.e. the percentage of solids
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/71—Ceramic products containing macroscopic reinforcing agents
- C04B35/74—Ceramic products containing macroscopic reinforcing agents containing shaped metallic materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/71—Ceramic products containing macroscopic reinforcing agents
- C04B35/74—Ceramic products containing macroscopic reinforcing agents containing shaped metallic materials
- C04B35/76—Fibres, filaments, whiskers, platelets, or the like
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/20—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder
- H01F1/28—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder dispersed or suspended in a bonding agent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
- B29C71/0072—After-treatment of articles without altering their shape; Apparatus therefor for changing orientation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
- B29K2105/20—Inserts
- B29K2105/203—Magnetic parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0003—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular electrical or magnetic properties, e.g. piezoelectric
- B29K2995/0008—Magnetic or paramagnetic
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/40—Metallic constituents or additives not added as binding phase
- C04B2235/405—Iron group metals
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/52—Constituents or additives characterised by their shapes
- C04B2235/5276—Whiskers, spindles, needles or pins
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/52—Constituents or additives characterised by their shapes
- C04B2235/528—Spheres
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/52—Constituents or additives characterised by their shapes
- C04B2235/5292—Flakes, platelets or plates
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5436—Particle size related information expressed by the size of the particles or aggregates thereof micrometer sized, i.e. from 1 to 100 micron
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/74—Physical characteristics
- C04B2235/78—Grain sizes and shapes, product microstructures, e.g. acicular grains, equiaxed grains, platelet-structures
- C04B2235/787—Oriented grains
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/44—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of magnetic liquids, e.g. ferrofluids
- H01F1/442—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of magnetic liquids, e.g. ferrofluids the magnetic component being a metal or alloy, e.g. Fe
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24149—Honeycomb-like
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
- Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
- Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
- Y10T428/249955—Void-containing component partially impregnated with adjacent component
- Y10T428/249956—Void-containing component is inorganic
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Power Engineering (AREA)
- Inorganic Chemistry (AREA)
- Hard Magnetic Materials (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Soft Magnetic Materials (AREA)
Description
降伏応力を有し、配列した複数の磁性粒子を含む、粘塑性材料を提供し、次に、
少なくとも一部の磁性粒子が、少なくとも1つの所定の位置または方向に少なくともある程度配向するのに十分な時間、粘塑性材料を磁場に曝露する、
各工程を有してなる方法を提供する。
本明細書では、単数形「a」「an」および「the」は、文脈が明らかにそうでないことを指示しない限り、複数形の指示対象も含む。したがって、例えば、「(1つの)成分」への言及は、文脈が明らかにそうでないことを指示しない限り、そのような成分を2つ以上有する態様も含む。
米国特許第3,885,977号明細書。
磁性粒子は、磁場の力線に沿って配向しうることが一般に知られている。粒子は、磁性粒子に作用するトルク(T)により、特定の向きに配向しうる。トルクは、方程式:T=M×Hで表すことができ、ここでMは磁性粒子の磁気モーメントのベクトルを表し、Hは磁場の強度または強さのベクトルを表す。地球の磁場におけるコンパスの矢印の配向と同様に、磁性粒子におけるトルクは、磁気モーメントが磁場に対して平行になるように、粒子を配向させることができる。
粘塑性材料は、数種類ある非ニュートン液体の1つである。粘塑性材料および他の非ニュートン流体は、それらがストークスの法則の粘度に従わないことから、そのように分類される。粘塑性材料は降伏応力の閾値を有し、それらが所定の温度または温度範囲において閾値降伏応力よりも小さい剪断応力に晒された場合には、材料は固体のように振る舞い、ほとんどまたは全く変形を示さない。
本発明の磁性粒子は、磁場に曝露される際に、少なくともある程度配向および/または指向しうる、粘塑性材料用途に好適な任意の粒子である。磁性粒子の特定の磁気特性、例えば磁気モーメントなどは、磁場に曝露される際に、少なくとも一部の磁性粒子が移動し、および/または少なくともある程度配向しうることを条件に、変化させて構わない。特定の磁性粒子の選択は、粘塑性材料の降伏応力に応じて、および/または、一部の磁性粒子を移動および/または少なくともある程度配向するのに用いられる磁場の強度に応じて変化しうる。
本発明の磁場は、粘塑性材料中に配列した少なくとも一部の磁性粒子を、移動、および/または少なくともある程度指向および/または配向させる用途に適切な任意の磁場であって差し支えない。さらには、磁場は、配列した複数の磁性粒子を有する粘塑性材料の少なくとも一部に、磁場の少なくとも一部を曝露することができる限り、任意の適切な手段によって生じさせて差し支えない。1つの態様では、粘塑性材料の一部は、磁場の一部に曝露される。別の態様では、粘塑性材料のすべてが磁場の一部に曝露される。粘塑性材料のすべてまたは一部が、磁場内の特定の位置に配置されることは必要としない。
M・H > S・R・σ0
ここで、Mは磁性粒子の磁気モーメントであり、Hは磁場における磁界の強度であり、Sは磁性粒子の表面積であり、Rは磁性粒子の半径であり、σ0は粘塑性材料の降伏応力を表す。本発明は、粘塑性材料中に配列した少なくとも一部の磁性粒子を移動し、少なくともある程度指向および/または配向させることを対象とする。すべての磁性粒子を移動および/または配向させること、任意の個別の磁性粒子を特定の度合いまで配向することは必要とされない。したがって、限定はしないが、磁場の強度は、上記式によって説明されるとおり、ほとんどすべて、またはすべての磁性粒子を指向および配向させるのに十分であることが好ましい。1つの態様では、磁場の強度は自然界における地球磁場の強度よりも大きい。
磁性粒子が少なくともある程度、指向および/または配向されると、それらの指向および位置は、随意的に粘塑性材料内に固定されうる。固定化の工程は、粘塑性材料内の磁性粒子の指向および位置を永久的にまたは半永久的に固定するための任意の適切な技術を含みうる。固定化の工程は、行う場合には、粘塑性材料の性質に応じてさまざまであって差し支えない。さまざまな態様では、任意の固定化の工程として、冷却、硬化、架橋、セラミック化、照射、乾燥、ゲル化、加熱、焼結、焼成、重合、またはそれらの組合せが含まれる。固定された粘塑性材料は、固形物と称してもよく、粘稠性の特性を示さない。1つの態様では、粘塑性材料は、例えば、熱的、化学的、および/または光学的手段によって架橋されうる高分子材料を含む。別の態様では、粘塑性材料には、乾燥、加熱、および/または焼成されて耐熱性のセラミック体を形成することができる、ガラス材料、セラミック材料、またはそれらの前駆体材料を含むスラリーが含まれる。ある特定の態様では、ムライトを含む粘塑性材料は、磁場への曝露後に、約75℃で約24時間乾燥し、その後、約1,350℃の最高温度で焼成されて、耐熱性のセラミックを形成することができる。
少なくともある程度配向および/または指向した磁性粒子を含む粘塑性材料は、随意的に、その後の処理工程に供されうる。1つの態様では、ムライトおよび孔隙形成コーティングを有する磁性粒子を含む固定された材料を加熱して、孔隙形成材料を揮発および/または燃焼させることができる。あるいは、耐熱性のセラミックにするための焼成工程の間に、孔隙形成材料を揮発および/または燃焼させることができる。このような処理は、例えば、耐熱性のセラミック体の内部に、少なくともある程度指向および/または配向した磁性粒子の配置に適合するパターンで、複数の平行な孔隙を形成することができる。1つの態様では、この技術を用いて、セラミック物品に、調節された孔隙構造をもたらすことができる。別の態様では、この技術を用いて、袋小路になっている(dead-end)孔隙の割合が低い物品を提供することができる。これらの用途では、磁性粒子の配向は、孔隙形成材料の分布を向上させることができる。例えば微粒子フィルタなどの特定の用途では、袋小路になっている孔隙の割合が低いセラミック物品は、その物品の熱伝導率を改善することから、好都合でありうる。
最初の例では、ムライト粉末(例えば、C−E Minerals社(米国ペンシルベニア州キング・オブ・プロシア所在)から市販されるものなど)を鉄粉と混合することによって、2種類の試験物品を調製した。第1の物品は、ムライト粉末、7μmの平均粒径を有する鉄粉(Alfa Aesar社(米国マサチューセッツ州ウォード・ヒル(Ward Hill)所在)から入手可能)、および水を混合し、セメント・スラリーを形成することにより調製した。第2の物品は、ムライト粉末、70μmの平均粒径を有する鉄粉(ESPI Metals社(米国オレゴン州アシュランド所在)から入手可能)、および水を混合し、セメント・スラリーを形成することにより、同様に調製した。各スラリー・サンプルを、6000ガウスの均一な磁場に30秒間晒した。曝露後、セメントサンプルを75℃で24時間乾燥し、その後、1,350℃の最高温度で焼成した。各焼成物品における鉄粒子の体積分率は5%以下であった。図4および5は、磁場に晒した後のムライト物品における鉄粒子の指向および配向を示している(明るいまたは白い領域)。各サンプル内の鉄粒子の位置および配向は、図4および5に示すように、同様であって、鉄粒子の大きさおよび/または形状によって左右されない。
Claims (5)
- a)降伏応力を有する粘塑性材料であって、セラミック材料、セラミック材料の前駆体、またはそれらの組み合わせを含む粘塑性材料と、
b)前記粘塑性材料に分散し、少なくとも1つの所定の位置または方向に少なくともある程度配向した、複数の磁性粒子と、
を含み、
前記粘塑性材料が、ケイ酸アルミニウムを含み、
前記複数の磁性粒子の少なくとも一部のブラウン運動および/または重力運動によって、前記粘塑性材料に生じる応力が、前記粘塑性材料の前記降伏応力よりも小さいことを特徴とする物品。 - 異方性材料の製造方法であって、
a)降伏応力を有し、セラミック材料、セラミック材料の前駆体、またはそれらの組み合わせを含み、かつ分散させられた複数の磁性粒子を含む、粘塑性材料を提供し、次に、
b)前記粘塑性材料を、前記磁性粒子の少なくとも一部が前記降伏応力に抗して少なくとも1つの所定の位置または方向に少なくともある程度配向するのに十分な時間、磁場に曝露する、
各工程を有してなり、
前記粘塑性材料が、ケイ酸アルミニウムを含み、
前記磁場の除去後において前記複数の磁性粒子の少なくとも一部のブラウン運動および/または重力運動によって前記粘塑性材料に生じる応力が、前記粘塑性材料の前記降伏応力よりも小さいことを特徴とする、方法。 - 前記工程a)の提供工程が、前記粘塑性材料を所望の形状に成形する工程を含むことを特徴とする請求項2記載の方法。
- 前記粘塑性材料内に、前記複数の磁性粒子の少なくとも一部を、少なくともある程度配向した状態で固定する工程をさらに有してなることを特徴とする請求項2または3記載の方法。
- 前記固定する工程が、前記粘塑性材料に、冷却、硬化、セラミック化、架橋、ゲル化、焼結、重合、照射、加熱、または焼成のうち少なくとも1つを行なう工程を含むことを特徴とする請求項4記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/804,848 | 2007-05-21 | ||
US11/804,848 US8057889B2 (en) | 2007-05-21 | 2007-05-21 | Method for producing anisoptropic bulk materials |
PCT/US2008/006405 WO2008153679A2 (en) | 2007-05-21 | 2008-05-19 | Method for producing anisotropic bulk materials |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2010527814A JP2010527814A (ja) | 2010-08-19 |
JP5562842B2 true JP5562842B2 (ja) | 2014-07-30 |
Family
ID=39596499
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2010509356A Expired - Fee Related JP5562842B2 (ja) | 2007-05-21 | 2008-05-19 | 異方性バルク材料の製造方法 |
Country Status (4)
Country | Link |
---|---|
US (2) | US8057889B2 (ja) |
EP (1) | EP2118036A2 (ja) |
JP (1) | JP5562842B2 (ja) |
WO (1) | WO2008153679A2 (ja) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4566255B2 (ja) * | 2008-08-21 | 2010-10-20 | アルプス電気株式会社 | 磁性シートの製造方法、磁性シートおよび磁性シートの製造装置 |
ES2785099T3 (es) | 2010-09-24 | 2020-10-05 | Sicpa Holding Sa | Dispositivo, sistema y método para producir un efecto visual inducido magnéticamente |
US9065093B2 (en) | 2011-04-07 | 2015-06-23 | Massachusetts Institute Of Technology | Controlled porosity in electrodes |
WO2012172503A1 (en) * | 2011-06-15 | 2012-12-20 | Koninklijke Philips Electronics N.V. | Processing of biological sample components |
US8840800B2 (en) * | 2011-08-31 | 2014-09-23 | Kabushiki Kaisha Toshiba | Magnetic material, method for producing magnetic material, and inductor element |
FR2985422B1 (fr) * | 2012-01-10 | 2014-08-08 | Oreal | Composition cosmetique solide a effets magnetiques |
NO20120739A1 (no) | 2012-06-25 | 2013-12-26 | Inst Energiteknik | En metode for forming av et legeme med en partikkelstruktur fiksert i et matrisemateriale |
NO20120740A1 (no) * | 2012-06-25 | 2013-12-26 | Inst Energiteknik | En metode for forming av et legeme med en partikkelstruktur fiksert i et matrisemateriale |
KR101792281B1 (ko) * | 2012-12-14 | 2017-11-01 | 삼성전기주식회사 | 파워 인덕터 및 그 제조 방법 |
JP2015503604A (ja) * | 2013-01-08 | 2015-02-02 | ロレアル | 磁気効果のある固体の化粧用組成物 |
US9637612B2 (en) * | 2013-09-20 | 2017-05-02 | Ferdowsi University of Mashhad | Method for aligning high aspect ratio materials and compositions therefrom |
WO2015091999A1 (en) | 2013-12-20 | 2015-06-25 | Condalign As | A body comprising a particle structure and method for making the same |
TWI511823B (zh) * | 2013-12-20 | 2015-12-11 | 財團法人工業技術研究院 | 調控積層製造之裝置及其方法 |
EP2947662A1 (en) * | 2014-05-21 | 2015-11-25 | Condalign AS | A method for arranging particles at an interface |
US10569480B2 (en) * | 2014-10-03 | 2020-02-25 | Massachusetts Institute Of Technology | Pore orientation using magnetic fields |
US10675819B2 (en) | 2014-10-03 | 2020-06-09 | Massachusetts Institute Of Technology | Magnetic field alignment of emulsions to produce porous articles |
GB201421078D0 (en) | 2014-11-27 | 2015-01-14 | Giamag Technologies As | Magnet apparatus for generating high gradient magnetic field |
US11158450B2 (en) * | 2019-06-17 | 2021-10-26 | International Business Machines Corporation | Particle-based, anisotropic composite materials for magnetic cores |
DE102020207986A1 (de) | 2020-06-29 | 2021-12-30 | Robert Bosch Gesellschaft mit beschränkter Haftung | Verfahren zur Verkapselung elektrischer Bauteile, Verkapselungsmaterial zur Verwendung in diesem Verfahren sowie verkapseltes elektrisches Bauteil |
JP2022175222A (ja) * | 2021-05-13 | 2022-11-25 | セイコーエプソン株式会社 | 軟磁性粉末、圧粉磁心、磁性素子、電子機器および移動体 |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3066355A (en) | 1959-05-29 | 1962-12-04 | Raytheon Co | Orientation of ferromagnetic particles |
US3977984A (en) | 1970-04-08 | 1976-08-31 | U.S. Philips Corporation | Chemically reactive resin beads and to methods of their manufacture |
IT938725B (it) * | 1970-11-07 | 1973-02-10 | Magnetfab Bonn Gmbh | Procedimento e dispositivo per otte nere disegni in strati superficiali per mezzo di campi magnetici |
US4250128A (en) | 1975-01-29 | 1981-02-10 | Magna Motors Corporation | Processes and apparatuses for preparing permanent magnet stators |
JPS6166607A (ja) * | 1984-09-11 | 1986-04-05 | 品川白煉瓦株式会社 | 振動鋳込み方法 |
WO1998006007A1 (en) * | 1996-08-01 | 1998-02-12 | Loctite (Ireland) Limited | A method of forming a monolayer of particles, and products formed thereby |
JPH10139563A (ja) * | 1996-10-31 | 1998-05-26 | Asahi Glass Co Ltd | セラミックス多孔体の製造方法 |
US6088471A (en) | 1997-05-16 | 2000-07-11 | Authentec, Inc. | Fingerprint sensor including an anisotropic dielectric coating and associated methods |
JP2000344585A (ja) | 1999-06-02 | 2000-12-12 | Asahi Glass Co Ltd | セラミックス多孔体の製造方法 |
US6649256B1 (en) | 2000-01-24 | 2003-11-18 | General Electric Company | Article including particles oriented generally along an article surface and method for making |
JP5057607B2 (ja) * | 2000-10-16 | 2012-10-24 | 京セラ株式会社 | ガラスセラミックスおよびその製造方法並びにそれを用いた配線基板 |
US6844378B1 (en) * | 2002-01-04 | 2005-01-18 | Sandia Corporation | Method of using triaxial magnetic fields for making particle structures |
JP2003301048A (ja) * | 2002-04-10 | 2003-10-21 | Polymatech Co Ltd | 熱伝導性成形体 |
US7404936B2 (en) * | 2002-10-22 | 2008-07-29 | Velocys | Catalysts, in microchannel apparatus, and reactions using same |
WO2004103661A1 (de) * | 2003-05-22 | 2004-12-02 | Bakker Holding Son B.V. | Vorrichtung und verfahren zum ausrichten magnetisierbarer partikel in einem pastösen material |
US20070281127A1 (en) * | 2006-05-30 | 2007-12-06 | Monika Backhaus-Ricoult | Cordierite formation |
-
2007
- 2007-05-21 US US11/804,848 patent/US8057889B2/en not_active Expired - Fee Related
-
2008
- 2008-05-19 WO PCT/US2008/006405 patent/WO2008153679A2/en active Application Filing
- 2008-05-19 EP EP08754547A patent/EP2118036A2/en not_active Withdrawn
- 2008-05-19 JP JP2010509356A patent/JP5562842B2/ja not_active Expired - Fee Related
-
2011
- 2011-09-14 US US13/232,386 patent/US8551389B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US20080292862A1 (en) | 2008-11-27 |
US8551389B2 (en) | 2013-10-08 |
EP2118036A2 (en) | 2009-11-18 |
WO2008153679A2 (en) | 2008-12-18 |
US20120001368A1 (en) | 2012-01-05 |
JP2010527814A (ja) | 2010-08-19 |
US8057889B2 (en) | 2011-11-15 |
WO2008153679A3 (en) | 2009-06-04 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5562842B2 (ja) | 異方性バルク材料の製造方法 | |
Porter et al. | Bioinspired scaffolds with varying pore architectures and mechanical properties | |
CA1317316C (en) | Process for the production of porous ceramics using decomposable polymeric microspheres and the resultant product | |
CN104671820B (zh) | 包含水泥外表皮及水泥的蜂窝结构 | |
Huang et al. | Novel colloidal forming of ceramics | |
JP2018516834A (ja) | 結合済みジルコニア耐火物及びその作製方法 | |
WO2015175853A1 (en) | Ultra-light ultra-strong proppants | |
He et al. | Improved green strength and green machinability of ZrB2–SiC through gelcasting based on a double gel network | |
KR20170130778A (ko) | 겔 캐스팅법을 이용한 세라믹 성형체 및 이의 제조방법 | |
Dey et al. | Preparation of mullite bonded porous SiC ceramics by an infiltration method | |
JP5036110B2 (ja) | 軽量セラミック焼結体 | |
Osman et al. | Controlling the drying-induced peeling of colloidal films | |
Prabhakaran et al. | Effect of concentration of ammonium poly (acrylate) dispersant and MgO on coagulation characteristics of aqueous alumina direct coagulation casting slurries | |
Li et al. | Effects of Solids Loading on Sintering and Properties of Freeze‐Cast Kaolinite–Silica Porous Composites | |
JP2017538582A (ja) | 溶融金属用の希土類リン酸塩系の非反応性かつ非湿潤性な表面 | |
JP2000344585A (ja) | セラミックス多孔体の製造方法 | |
Krishnan et al. | Natural rubber latex as a new binder for slip casting of alumina ceramics | |
Hubadillah et al. | Effect of kaolin particle size towards preparation of kaolin ceramic membrane | |
Kanakam et al. | Overview of Gel Casted Fused Silica Ceramics | |
JPS6374962A (ja) | 多孔質反応焼結Si↓3N↓4−SiC系複合セラミツクス材料並びにその製造方法及び接合方法 | |
KR101774334B1 (ko) | 다공성 복합 세라믹스의 제조방법 및 이에 의해 제조된 다공성 복합 세라믹스 | |
JP2016132021A (ja) | 鋳型造型用スラリー及びその製造方法並びに鋳型の製造方法 | |
RU2635161C1 (ru) | Способ изготовления высокопористого диоксида циркония | |
CN116239368B (zh) | 陶瓷-金属复合材料的制备方法及陶瓷-金属复合材料 | |
Cerecedo et al. | Assisted Sintering Via Sol–Gel Deposition in Low‐Fired Ceramic Preforms |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20110518 |
|
A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20120315 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20130319 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20130326 |
|
A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20130626 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20131015 |
|
A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20140115 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20140520 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20140611 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 5562842 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
LAPS | Cancellation because of no payment of annual fees |