JP4945245B2 - 炭化ホウ素複合体およびその製造方法 - Google Patents
炭化ホウ素複合体およびその製造方法 Download PDFInfo
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- JP4945245B2 JP4945245B2 JP2006541654A JP2006541654A JP4945245B2 JP 4945245 B2 JP4945245 B2 JP 4945245B2 JP 2006541654 A JP2006541654 A JP 2006541654A JP 2006541654 A JP2006541654 A JP 2006541654A JP 4945245 B2 JP4945245 B2 JP 4945245B2
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- silicon
- boron carbide
- armor
- preform
- composite
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Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
- F41H5/00—Armour; Armour plates
- F41H5/02—Plate construction
- F41H5/04—Plate construction composed of more than one layer
- F41H5/0414—Layered armour containing ceramic material
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- 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
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
- C04B35/563—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on boron carbide
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
- C04B35/565—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide
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- 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
- C04B35/78—Ceramic products containing macroscopic reinforcing agents containing non-metallic materials
- C04B35/80—Fibres, filaments, whiskers, platelets, or the like
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- C04B38/0022—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof obtained by a chemical conversion or reaction other than those relating to the setting or hardening of cement-like material or to the formation of a sol or a gel, e.g. by carbonising or pyrolysing preformed cellular materials based on polymers, organo-metallic or organo-silicon precursors
- C04B38/0032—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof obtained by a chemical conversion or reaction other than those relating to the setting or hardening of cement-like material or to the formation of a sol or a gel, e.g. by carbonising or pyrolysing preformed cellular materials based on polymers, organo-metallic or organo-silicon precursors one of the precursor materials being a monolithic element having approximately the same dimensions as the final article, e.g. a paper sheet which after carbonisation will react with silicon to form a porous silicon carbide porous body
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- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
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- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5093—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with elements other than metals or carbon
- C04B41/5096—Silicon
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- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/81—Coating or impregnation
- C04B41/85—Coating or impregnation with inorganic materials
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- C—CHEMISTRY; METALLURGY
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- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00905—Uses not provided for elsewhere in C04B2111/00 as preforms
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Description
[0003]多くの用途において、重量は重要な要因ではなく、鋼などの従来材料は、弾道発射体および弾片などの空からの脅威に対してあるレベルの保護を提供することができる。鋼製装甲は低コストの利点と、それらが組み込まれる装置の構造部材として働くこともできる利点を提供する。ここ数十年間、ある種の硬質セラミックがある種の装甲用途に開発された。アルミナ、炭化ホウ素、炭化ケイ素など、これらのセラミック系装甲は、同じ弾道衝撃停止力に対して鋼よりも質量が軽いという利点を提供する。したがって、(人間の)身体の装甲および航空機装甲など、できるだけ軽い質量が重要である装甲の用途において、低比重の装甲材料が必要とされる。密度が低いほど、同じ面積密度で与えうる装甲の厚さはより厚い。一般に、装甲の容積が大きいと、入射する発射体に打ち勝つ目的に適合することができるので、厚い装甲材料は薄いものよりも望ましい。さらに、より厚い装甲プレート上への発射体の衝撃は、衝撃を受けた反対側のプレート面の引っ張り応力を、より薄い装甲プレートの裏面に生じるであろう応力よりも少なくする。したがって、セラミックなどの脆い材料に関しては、装甲の裏面の過剰な引っ張り応力による脆性破壊を防止することが重要であり、さもなければ、装甲は簡単に破壊される。むしろ、それらの引っ張り応力を防止することによって、発射体の動エネルギーは、おそらく装甲体内部に完全に吸収することができ、そのエネルギー吸収は、多数の破壊の形、例えば粉砕の形で、装甲材料の非常に大きな新しい表面を形成することは明らかである。
[0018]Waggonerらの米国特許第6,503,572号明細書は、反応結合または反応形成した炭化ケイ素体はケイ素と少なくとも1種の金属、例えばアルミニウムを含む溶浸材を用いて形成することができることを教示する。このようにしてケイ素相を修飾することによって、得られる複合材の物理的特性および他の重要な処理現象の成果を微調整することができる。それらの炭化ケイ素複合材料は、特に、精密装置、ロボット、工具、装甲、電子実装および熱管理、および半導体製造産業で注目されている。意図される特定の製造品目は、半導体ウェーハ取扱装置、真空チャック、静電気チャック、空気ベアリング筐体もしくは支持枠、電子実装および基板、機械工具の架橋および基底、ミラー基板、ミラー台および平坦なパネル表示据付具を含む。
[0032]本明細書に用いられる「面密度」は、単位面積あたりの装甲系の質量を意味する。
[0095]この参考例は、炭化ホウ素補強を含むSi/SiC複合体、すなわち、Si/SiC/B4Cの反応性溶浸による製造を例示する。さらに詳細には、この参考例は、樹脂性前駆体から誘導された相互接続炭素相、および炭化ケイ素と炭化ホウ素粒子を含む予備成形品へのケイ素含有溶融物の溶浸を例示する。
[0109]予備成形品の作製に炭化ケイ素粒子を使用せず、炭化ホウ素の粒子サイズ分布を、実質上全ての粒子が約45ミクロンよりも小さくなるように修正したことを除いて、参考例1の技術を実質上繰り返した。熱分解工程に続いて、予備成形品は約75体積%の炭化ホウ素粒子と約4体積%の炭素を含んだ。
[0111]ケイ素溶浸材をレイアップに供給する前に、単層のTETRABOR(登録商標)炭化ホウ素粒子(220グリット、ESK)をフィーダーレール間の炭素布上に散布したことを除いて、参考例2の技術を実質上繰り返した。加えた炭化ホウ素を相殺し、約10%の過剰のケイ素供給を維持するために、参考例1のように、付随してケイ素の量を増加させた。
[0112]この例は、微細粒子炭化ケイ素充填材で高度に装填された炭化ケイ素複合材装甲プレートの作製を示す。この例は熱処理装置の部品のいくつかの再使用をさらに示す。
の内部表面を、実質上参考例1に説明したものと同じようにして、窒化ホウ素スラリーまたはペイント33を噴霧塗布した。
[0122]ここで詳細に図4Bを参照すれば、重さ約25グラム、寸法約790mm×約230mmの単一PANEX(登録商標)30の低酸化炭素布44(グレードPW03、平織り、115g/m2、Zoltek Corp.、St.Louis、MO)を、塗布したグラファイトトレー31、33の床に置いた。各々約190グラムの質量を有する4個の炭化ホウ素レール予備成形品32を、布44の幅を横切って、各トレーの半分に一対で配置して置いた。約0.5重量%のFe(最大)を含み残りSiを含む十分なケイ素(グレードLP、Elkem Metals Co.、Pittsburgh、PA、塊の形)を炭素布の表面上に散布して、布と、レール、およびレール上に配置されたあらゆる予備成形品を完全に溶浸させた。室の頂部は、雰囲気の交換を許容する多数の直径約1cmの貫通孔36を特徴とする、緩く固定した(気密封止ではない)グラファイト蓋34で覆った。孔は動かない負荷として働くグラファイトブロック40で場所に固定された一片のグラファイトフェルト38で覆い、それによってレイアップを完成した。
[0125]約0.5重量%のFe(最大)および残りSiを含む約1775グラムの他のケイ素21(グレードLP、Elkem Metals Co.、Pittsburgh、PA)を炭化ケイ素複合材(例えば溶浸された)レール間の炭化ケイ素織物上に分配した。直径約0.25インチ(6mm)の寸法の、窒化ホウ素33で噴霧塗布したグラファイトドエル棒39をグラファイト保持具または支持具37中に置いた。同様に窒化ホウ素33で噴霧コーティングした4個の胸当て予備成形品11を、2個のレールの端を横断してトレーの各半分に置いた(図4A参照)。レールに接触する各予備成形品の表面は塗布しなかった。室の頂部を前述のように被覆してレイアップを完成させた。
[0128]炭化ケイ素粒子が炭化ホウ素粒子の代わりに用いられたことを除いて、参考例2の技術を実質上繰り返した。しかし、参考例2のように、炭化ケイ素混合物の粒子サイズ分布は、実質上全ての粒子が約45ミクロンよりも小さいようにした。熱分解工程に続いて、予備成形品は約75体積%の炭化ケイ素粒子と約4体積%の炭素を含んだ。
[0131]この比較例は、反応性溶浸工程による複合体の製造を示し、複合体は炭化ホウ素補強を特徴とする。工程は、以下を除いて参考例1に類似していた。
[0137]作製工程の後、本反応結合セラミック複合材料の様々な機械的および物理的特性を測定した。密度はASTM規格B311による水浸漬技術によって求めた。弾性特性はASTM規格D2845に従って超音波プラスエコー技術によって測定した。硬度は、ASTM規格E92による2kg負荷でのビッカース尺度で測定した。4点曲げの曲げ強度は、ASTM手順第D790を用いた比較例1の複合材料を除いて、MIL−STD−1942Aに従って求めた。破壊靭性は4点曲げシェブロンノッチ技術およびネジ駆動Sintech model CITS−2000汎用試験機械を用い、1mm/分のクロスヘッド速度での変位制御下で測定した。寸法6×4.8×50mmの試験片を、6mm寸法に平行な負荷方向、および内部および外部負荷スパンはそれぞれ20mmおよび40mmで試験した。幅0.3mmのダイアモンド刃で切断したシェブロンノッチは60°の包括角を有し、各試験片の中間長に位置した。試験片の寸法は、Munzらの解析による2種の計算方法の間で解析差を最小にするように選択した(D.G.Munz、J.L.Shannon、およびR.T.Bubsey、「シェブロンノッチ試験片の4点曲げ試験における最大負荷からの破壊靭性計算(Fracture Toughness Calculation from Maximum Load in Four Point Bend Tests of Chevron Notch Specimens)」、Int.J.Fracture、16R137〜41(1980))。
[0144]第1回弾道衝撃試験は、市販されているホットプレス炭化ホウ素に対する比較例1のSiCを充填したRBSC複合材料の評価に焦点を合わせた。候補のセラミック装甲材料は一側部が約100mmの四角いタイルの形で提供した。試験したタイルの中のいくつかは比較例1の炭化ケイ素胸当てと実質上同じ組成物であった。
[0151]この第2回弾道衝撃試験において、参考例2の本RBBC材料を候補の装甲として評価し、比較例2のSiC充填RBSC材料ならびに市販のホットプレスB4C(対照)と比較した。一連の試験の中で、弾道発射体として弾丸群に対して反応結合SiCおよび市販のホットプレスB4Cを試験し、第2回の試験の組において、装甲貫通(AP)群に対して反応結合B4CおよびホットプレスB4Cを試験した。
[0153]弾道衝撃試験の結果は表VおよびVIに提供する。反応結合SiCおよび市販のホットプレスB4C(対照)について、7.62mmのM80弾丸の群に対する試験結果を表Vに提供する。反応結合B4Cおよび市販のホットプレスB4Cについて、7.62mmのAPM2の群に対する試験結果を表VIに提供する。各々の場合において、表は、系の面密度、目標の質量効率、ホットプレスB4C対照に関して正規化した質量効率を提供する。表における質量効率は、同じ衝撃に対する均一なロール鋼製装甲(RHA)についての入手可能なデータに基づいて求めた。詳細には、質量効率は、同じ性能を与えるために必要なRHAの面密度を試験ターゲットの面密度で除して計算した。
[0155]以下のことを除いて、実質上参考例1の手順を繰り返した。
[0161]この実施例は、実質上反応性炭素を含まない予備成形品にケイ素系金属を溶浸することによる炭化ホウ素/ケイ素複合体の製造を示す。言い換えれば、この実施例は、ケイ素化した炭化ホウ素複合体の形成を示す。
[0164]この実施例は、ケイ素化した炭化ホウ素複合体の製造を示す。
[0167]この実施例は、ケイ素化した炭化ホウ素製造の他の実施形態を示す。
Claims (12)
- ケイ素金属を含む合金を含み、該ケイ素金属中に少なくとも1種のホウ素を含む物質と少なくとも1種の炭素を含む物質が溶解しているマトリックス成分と、
炭化ホウ素を含む補強成分とを含む複合材料であって、
前記補強成分が前記マトリックス全体に分散され、前記炭化ホウ素が前記合金によって影響を受けず、かつ
前記複合材料はβ−SiCを含まない複合材料。 - 前記補強成分が複数の充填材料体を含み、前記充填材料体の少なくとも90体積%が直径55ミクロンよりも小さい請求項1に記載の複合材料。
- 前記補強成分が前記複合材料の少なくとも65体積%を構成する請求項1に記載の複合材料。
- 防弾装甲の構成材であって、前記構成材が、少なくとも1層のセラミック層と、前記セラミック層の後方に配置され接合された少なくとも1層の裏打ち層とを含み、
前記セラミック層が、
(a)ケイ素を含む合金と、前記ケイ素に溶解したホウ素とを含むマトリックス、および
(b)前記マトリックス全体に分散された複数の炭化ホウ素充填体を含む少なくとも1種の補強材料を含む、
少なくとも1種の炭化ホウ素複合体を含み、
前記構成材がβ−SiCを含まない防弾装甲構成材。 - 前記合金が、前記ケイ素に溶解した炭素を含む少なくとも1種の物質をさらに含む請求項4に記載の防弾装甲構成材。
- 前記炭化ホウ素充填体の少なくとも90体積%が、100ミクロンよりも小さい請求項4に記載の防弾装甲構成材。
- 前記複合材料が前記溶浸材相を30体積%以上含まない請求項4に記載の防弾装甲構成材。
- 炭化ホウ素を含む少なくとも1種の充填材料を含む多孔質の塊または予備成形品(但し、該多孔質の塊または予備成形品は実質上遊離炭素を含まない。)を提供するステップと、
炭素を含む少なくとも1種の物質が溶解している、ケイ素を含む溶融溶浸材を提供するステップと、
次いで、真空中または不活性雰囲気中で、前記溶融溶浸材を少なくとも1種の前記多孔質の塊または予備成形品に接触させるステップと、
前記溶融溶浸材を前記多孔質の塊または予備成形品中に溶浸させ、それによって前記溶浸材を含むマトリックス中に分散された前記炭化ホウ素を含む複合体を形成するステップと、
前記溶融溶浸材を固化するステップとを含む複合体の製造方法。 - 前記溶浸が2000℃を超えない温度で行われる請求項8に記載の方法。
- 前記補強材料が少なくとも前記複合体の65体積%を占める、請求項4に記載の防弾装甲構成材。
- 前記炭化ホウ素を粒子として提供する、請求項8に記載の方法。
- 前記溶融溶浸材がさらに、前記ケイ素に溶解したホウ素を含む少なくとも1種の物質を含む、請求項8に記載の方法。
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US52491603P | 2003-11-25 | 2003-11-25 | |
US60/524,916 | 2003-11-25 | ||
PCT/US2004/039319 WO2005079207A2 (en) | 2003-11-25 | 2004-11-23 | Boron carbide composite bodies, and methods for making same |
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JP2007513854A JP2007513854A (ja) | 2007-05-31 |
JP2007513854A5 JP2007513854A5 (ja) | 2011-04-21 |
JP4945245B2 true JP4945245B2 (ja) | 2012-06-06 |
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US20140109756A1 (en) * | 2000-07-21 | 2014-04-24 | Michael K. Aghjanian | Composite materials and methods for making same |
DE102006051201A1 (de) * | 2006-10-30 | 2008-05-08 | Robert Bosch Gmbh | Werkstoff für tribologische Anwendungen |
JP5116353B2 (ja) * | 2007-04-26 | 2013-01-09 | 京セラ株式会社 | 防護部材およびこれを用いた防護具 |
WO2009123283A1 (ja) * | 2008-04-04 | 2009-10-08 | Toto株式会社 | 炭化硼素・炭化珪素・シリコン複合材料 |
WO2009123282A1 (ja) * | 2008-04-04 | 2009-10-08 | Toto株式会社 | 複合材料およびその製造方法 |
CA2723516A1 (en) | 2008-05-16 | 2009-11-19 | Element Six (Production) (Pty) Ltd | Boron carbide composite materials |
WO2011014283A2 (en) | 2009-05-04 | 2011-02-03 | Ppg Industries Ohio, Inc. | Composite materials and applications thereof |
JP5378931B2 (ja) * | 2009-09-28 | 2013-12-25 | 株式会社日本セラテック | 金属基複合材料の製造方法 |
JP5462618B2 (ja) * | 2009-12-25 | 2014-04-02 | 株式会社日本セラテック | 複合材料の製造方法 |
JP5462650B2 (ja) * | 2010-02-09 | 2014-04-02 | 株式会社日本セラテック | 複合材料の製造方法 |
JP5469033B2 (ja) * | 2010-09-29 | 2014-04-09 | 株式会社日本セラテック | 複合材料の製造方法 |
JP5785003B2 (ja) * | 2011-06-29 | 2015-09-24 | 日本ファインセラミックス株式会社 | 複合材料の製造方法 |
JP5841392B2 (ja) * | 2011-09-30 | 2016-01-13 | 日本ファインセラミックス株式会社 | 複合材料の製造方法 |
JP5859850B2 (ja) * | 2011-12-28 | 2016-02-16 | 日本ファインセラミックス株式会社 | 複合材料およびその製造方法 |
JP5809971B2 (ja) * | 2011-12-28 | 2015-11-11 | 日本ファインセラミックス株式会社 | 複合材料の製造方法 |
JP5914026B2 (ja) * | 2012-02-16 | 2016-05-11 | 日本ファインセラミックス株式会社 | 複合材料およびその製造方法 |
US9458632B2 (en) | 2012-10-18 | 2016-10-04 | Ppg Industries Ohio, Inc. | Composite materials and applications thereof and methods of making composite materials |
IL230775B (en) | 2014-02-02 | 2018-12-31 | Imi Systems Ltd | Pre-stressed curved ceramic panels/tiles and a method for their production |
JP7012911B1 (ja) * | 2021-01-26 | 2022-01-28 | 三菱電機株式会社 | 複合セラミックス材料の製造方法 |
EP4323326A1 (de) | 2021-04-16 | 2024-02-21 | Schunk Ingenieurkeramik GmbH | Verbundformkörper aus einer reaktionsgebundenen, mit silizium infiltrierten mischkeramik |
CN113105243A (zh) * | 2021-04-28 | 2021-07-13 | 西安石油大学 | 表面具有碳化硅和硅涂层的b4c/石墨复合材料及其制备方法 |
CN113233899A (zh) * | 2021-06-09 | 2021-08-10 | 西安石油大学 | B4C/石墨预制体渗硅反应生成B4C-SiC-Si复合材料及其制备方法 |
CN113929465B (zh) * | 2021-12-16 | 2022-03-01 | 山东金鸿新材料股份有限公司 | 一种复合防弹陶瓷材料的制备方法 |
CN116023168B (zh) * | 2022-12-12 | 2024-03-29 | 航天特种材料及工艺技术研究所 | 一种对多孔性硅硼氮陶瓷材料进行降碳处理的方法以及由该方法制得的材料 |
CN116409996B (zh) * | 2022-12-28 | 2024-03-15 | 北京普凡防护科技有限公司 | 一种绿色防弹陶瓷的制备方法 |
WO2024261970A1 (ja) * | 2023-06-22 | 2024-12-26 | 三菱電機株式会社 | セラミックス基複合材料焼結体およびその製造方法 |
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US3796564A (en) * | 1969-06-19 | 1974-03-12 | Carborundum Co | Dense carbide composite bodies and method of making same |
US3725015A (en) * | 1970-06-08 | 1973-04-03 | Norton Co | Process for forming high density refractory shapes and the products resulting therefrom |
US4312954A (en) * | 1975-06-05 | 1982-01-26 | Kennecott Corporation | Sintered silicon carbide ceramic body |
JPS63156068A (ja) * | 1986-12-18 | 1988-06-29 | 富士通株式会社 | 炭化ほう素−炭化けい素複合焼結体の製法 |
EP0372708A1 (en) * | 1988-11-10 | 1990-06-13 | United Kingdom Atomic Energy Authority | A method of producing a silicon carbide-based body |
JPH03257067A (ja) * | 1990-03-07 | 1991-11-15 | Mitsubishi Heavy Ind Ltd | 高強度・高弾性セラミックス |
US6503572B1 (en) * | 1999-07-23 | 2003-01-07 | M Cubed Technologies, Inc. | Silicon carbide composites and methods for making same |
US6609452B1 (en) * | 2000-01-11 | 2003-08-26 | M Cubed Technologies, Inc. | Silicon carbide armor bodies, and methods for making same |
US6862970B2 (en) * | 2000-11-21 | 2005-03-08 | M Cubed Technologies, Inc. | Boron carbide composite bodies, and methods for making same |
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2004
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WO2005079207A2 (en) | 2005-09-01 |
JP2007513854A (ja) | 2007-05-31 |
WO2005079207A9 (en) | 2005-09-29 |
WO2005079207A3 (en) | 2005-10-27 |
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