JPS5837274B2 - 高強度複合焼結材料 - Google Patents

高強度複合焼結材料

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Publication number
JPS5837274B2
JPS5837274B2 JP55117362A JP11736280A JPS5837274B2 JP S5837274 B2 JPS5837274 B2 JP S5837274B2 JP 55117362 A JP55117362 A JP 55117362A JP 11736280 A JP11736280 A JP 11736280A JP S5837274 B2 JPS5837274 B2 JP S5837274B2
Authority
JP
Japan
Prior art keywords
boride
type
nickel
weight
borides
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
Application number
JP55117362A
Other languages
English (en)
Other versions
JPS5742578A (en
Inventor
信一 河野
忠彦 渡辺
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
National Institute of Advanced Industrial Science and Technology AIST
Original Assignee
Agency of Industrial Science and Technology
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Filing date
Publication date
Application filed by Agency of Industrial Science and Technology filed Critical Agency of Industrial Science and Technology
Priority to JP55117362A priority Critical patent/JPS5837274B2/ja
Priority to US06/241,235 priority patent/US4379852A/en
Publication of JPS5742578A publication Critical patent/JPS5742578A/ja
Publication of JPS5837274B2 publication Critical patent/JPS5837274B2/ja
Expired legal-status Critical Current

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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
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/64—Burning or sintering processes
    • C04B35/645—Pressure sintering
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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
    • C04B35/58—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 borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides
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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
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    • C04B35/5805—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 borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on borides
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    • 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
    • C04B35/515—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
    • C04B35/58—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 borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides
    • C04B35/5805—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 borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on borides
    • C04B35/58064—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 borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on borides based on refractory borides
    • 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
    • C04B35/58—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 borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides
    • C04B35/5805—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 borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on borides
    • C04B35/58064—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 borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on borides based on refractory borides
    • C04B35/58071—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 borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on borides based on refractory borides based on titanium borides
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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
    • C04B35/58—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 borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides
    • C04B35/5805—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 borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on borides
    • C04B35/58064—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 borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on borides based on refractory borides
    • C04B35/58078—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 borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on borides based on refractory borides based on zirconium or hafnium borides
    • 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
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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    • C04B35/63—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 using additives specially adapted for forming the products, e.g.. binder binders
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Description

【発明の詳細な説明】 本発明はＭＢ２型ホウ化物およびＭ２Ｂ５型ホウ化物の
中から選んだ１種以上のホウ化物と、ホウ化物もしくは
ニッケルリン合金の中から選んだ１種以上の結合剤、さ
らに必要に応じ、ＭＢ型ホウ化物添加剤とを基本組成と
し、これを炭化物、ケイ化物、窒化物、酸化物の中から
選ばれた少なくとも１種の添加或分を配合して成る焼結
体で、著しく強度が高くかつ硬質でしかも耐熱性１こ優
れた材料１こ関するものである。
ニホウ化金属は一般に高融点、硬質かつ高温での強度も
高いため、切削工具、熱機関部品材料、ロケット用材料
などへの用途が期待されているがニホウ化物又はＭ２Ｂ
，型ホウ化物だけからなる焼結体は抗折強度が低く、も
ろいという欠点がある。
そこで、本発明者らは、この欠点を改良し、かつニホウ
化金属の有用な特性を発揮させる結合剤を見いだすため
、これまで種々の研究を重ね、先１こ１種以上のニホウ
化金属１こ対する結合剤としてニッケル・リン合金、ホ
ウ化ニッケル、ホウ化鉄、ホウ化コバルト、ホウ化マン
ガン、ホウ化チタンなどを提案した。
特公昭５６−４．１．６９０号公報、特開昭５５−１６
７１８０号公報、特公昭５６−５１２２０号公報、特開
昭５６−２３２４６号公報。
さら｛こニホウ化金属と高温で画し結晶構造を有するＷ
２Ｂ５およびＭｏ２Ｂ５を基とする焼結体を見いだすこ
とによって、一層高強度の材料を得るに至った特開昭５
６−３２３７９号公報。
しかしながら、実用的１．１ｔさらに高強度のものが好
ましい。
そこで、さら１こ、種々の添加物の効果を検討する実験
を重ねた結果、炭化物、酸化物ケイ化物あるいは窒化物
を添加すると、さらに強度の改善ができることを見いだ
し、この知見に基づいて本発明をなす１こ至った。
ＴｉＢ２，ＶＢ２ ｔ ＮｂＢ２ ｔＴａＢ２ ，Ｍｏ
Ｂ２ ，ＭｎＢ２ｔＺｒＢ２，ＨｆＢ２ ｔＡＩＢ２の
ＭＢ２型ホウ化物およびＭｏ２ Ｂ５ ，ｗ２Ｂ５の高
温時にＭＢ２型になるＭ２Ｂ５型ホウ化物の中から選ば
れたホウ化金属の１種以上と、全量に基づき０．０１〜
５０重量％のホウ化ニッケル、ホウ化鉄、ホウ化コバル
ト、ホウ化マンガン、ホウ化チタンおよびニッケルリン
合金の中から選ばれた結合剤の１種以上とを基本組或に
するか、あるいはさらにＴａＢ，ＮｂＢ，ＷＢ，ＺｒＢ
，ＨｆＢ，ＭｏＢ，ＶＢのＭＢ型ホウ化物の中から選ば
れたホウ化金属の１種以上を加えたものを基本組或とし
、これにＴｉＣ ，ＷＣ，Ｍｏ２ Ｃ ２ Ｂ４ Ｃ
Ｉ Ｔ ａ Ｃ ，ＮｂＣ，ＶＣ，ＴａＮ，ＴｉＮ，Ｖ
Ｎ，ＭｏＳｉ２，Ｔｉｅ，Ｔｉ０２ ，Ｔｉ２０３ ，
Ａｌ２０３ ，Ｂ２０３およびＺｒ０２，の中から選ば
れた改良剤の１種以上を全量に基づき０．１〜５０重量
％の割合で添加して成る新規な焼結材料を提供するもの
である。
本発明に用いられるニホウ化金属および添加ＭＢ型ホウ
化金属粉は、平均粒径５μ以下の粉末を用いるのが好ま
しい。
添加或分のＭＢ型ホウ化物（ＴａＢ，ＣｒＢ等）を添加
する場合は、焼結体全重量に対し０．１〜４０％の範囲
で添加するのが適当である。
この量が０．１％未満であれば十分な機械的強度の改善
ができないしまた４０％を超えると焼結性が低下する。
結合剤物質は焼結体重量に対し０．０１〜５０重量％の
範囲で添加するのが適当である。
この量が０．０１％未満では焼結性が低下し、また５０
％を超えると耐熱性が低下する。
結合剤物質のうち、ホウ化ニッケルとしては、ＮｘＢ）
Ｎｔ４Ｂ３２Ｎｔ２Ｂ）Ｎｔ３Ｂおよびこれらの混合物
を、ホウ化コバルトとしてはＣｏＢ，ＣＯ２ＢＣＯ３Ｂ
またはこれらの混合物を、ホウ化鉄としてはＦｅＢ，Ｆ
ｅ２Ｂまたはこれらの混合物を、ホウ化マンガンとして
は、Ｍｎ Ｂ Ｉ Ｍｎ３ Ｂ４ ２ Ｍｎ２ Ｂ ，
Ｍｎ４Ｂまたはこれらの混合物を、ホウ化チタンとして
は、ＴｉＢ，Ｔｉ２ Ｂ，’ｒｉ２Ｂ５またはこれらの
混合物をそれぞれ用いることができる。
これらの結合剤中、ＭＩ Ｂ） Ｎｔ４ Ｂ３ ２ Ｃ
ＯＢ Ｉ ＦｅＢ， Ｔ ｔ Ｂ，ＭｎＢ，およびこれ
らの混合物は特に結合剤として適している。
またニッケルリン合金、あるいは前記結合剤とニッケル
リン合金との混合物も結合剤として用いることができる
。
このニッケルリン合金とはニッケルに対し３〜２５重量
％のリンを添加した合金をいう。
ホウ化ニッケル、ホウ化鉄、ホウ化コバルト、ホウ化マ
ンガン、ホウ化チタンおよびニッケルリン合金は必ずし
も原料として用いる必要はなく、焼結後にこれらホウ化
物あるいはリン化物を形成する原料を用いてもよい。
本発明の高強度複合焼結材料を製造するには、１種以上
のニホウ化金属またはＭ２Ｂ５型ホウ化物粉末と、所定
量の結合剤粉末とを配合した粉末かあるいはこれ／にＭ
Ｂ型ホウ化物を添加した粉末／に炭化物、窒化物、ケイ
化物、酸化物の中から選ばれた１種以上の添加物を０．
１〜５０％添加した後、よく混合し、この混合粉末を黒
鉛型のような型に充てんし、真空中、アルゴンまたは水
素ガスのような中性あるいは還元性雰囲気中において５
０ｋｇ／ｃｆｆｌ以上できうれば２００ｋｇ／一前後の
圧力下でｉｏｏｏ℃以上（多くの場合１７００〜１８０
０℃が最適温度預域）で加熱することによって焼結体を
製造することができる。
またこれらの混合粉末を金型中で成形し、中性もしくは
還元性雰囲気中で常圧焼或することにより焼結体を製造
することもできる。
また、ニホウ化金属、Ｍ２Ｂ，型ホウ化物と、必要に応
じてのＭＢ型添加物（ＴａＢ，ＣｒＥ￥等）と、所定の
炭化物、窒化物、ケイ化物、酸化物等とを混合し、あら
かじめ成形焼結させた焼結体に、結合剤の融液を溶浸さ
せる。
いわゆる溶浸法によっても目的とする焼結体を製造する
ことができる。
このようにして得られる複合材料は相対密度、機械的強
度、硬度、耐熱性に優れ、切削工具、熱機関部品材料、
ロケット材料などの材料として最適である。
以下実施例１こより本発明をさらに詳細に説明する。
実施例 Ｉ ＴｉＢ２粉末９３重量％１こ、ＭＯ２ Ｂｓ粉゛末３重
量％Ｍｏ２Ｃ粉末３重量％およびＣｏＢ粉末１重量％を
十分に混合した。
次にこの混合物を黒鉛型に入れ、真空中において２ ０
０ ｋｇ／ｉに加圧しながら、１７００℃で３０分間
加熱した。
このようにしで、相対密度１００％、抗折強度２ ２
０ ｋｇ／ｉ，ビツカース硬度３ ０ ０ ０ ｋ９Ａ
ａ −ｓの焼結体を得た。
この焼結体の１０００°Ｃにおけるビツカース硬度は２
０ ０ ０ ｋｇ／ｍＡであった。
同様にして得た試料の組成、焼結条件および、焼結体の
特性を第１表、第２表に示す。
実施例 ２ ＴｉＢ２粉末１こ全量に基づき５重量％のＴａＢ２１重
量％又は３重量％のＣｏＢ粉末とを加えた基本組成に第
３表に示す改良剤を全量に基づき５重量％の割合で加え
十分に混合した。
次にこの混合物を黒鉛型に入れ、真空中においで２ ０
０ ｋｇ／ｃｙ？ｒ１こ加圧しながら、１７００℃で
３０分間加熱した。
このようにして得た焼結体の抗折強度、室温におけるビ
ツカース硬度、１００００Ｃにおけるビツカース硬度を
第３表に示す。

Claims (1)

  1. 【特許請求の範囲】 Ｉ ＴｉＢ２ ， ＶＢ２ ， ＮｂＢ２ ，ＴａＢ
    ２，ＭｏＢ２ ，ＭｎＢ２，ＺｒＢ２，ＨｆＢ２，ＡＩ
    Ｂ２のＭＢ２型ホウ化物およびＭＯ２Ｂ５，Ｗ２Ｂ５の
    高温時にＭＢ２型｛こなるＭ２Ｂ，型ホウ化物の中から
    選ばれたホウ化金属の１種以上と、全量に基づき０．０
    １〜５０重量％のホウ化ニッケル、ホウ化鉄、ホウ化コ
    バルト、ホウ化マンガン、ホウ化チタンおよびニッケル
    リン合金の中から選ばれた結合剤の１種以上とを基本組
    或とし、これ１こＴＩＣ，ＷＣ，Ｍｏ２Ｃ，Ｂ４Ｃ，Ｔ
    ａＣ，ＮｂＣ，ＶＣ，ＴａＮ，ＴｉＮ，ＶＮ，ＭｏＳｉ
    ２ ，ＴｉＯ，ＴｉＯ２，Ｔｉ２０３，ＡＩ２０３，Ｂ
    ２０３およびＺｒＯ２の中から選ばれた改良剤の１種以
    上を全量に基づき０．１〜５０重量％の割合で添加して
    或る焼結材料。 ２ ＴｉＢ２ ，ＶＢ２，ＮｂＢ２，ＭＯＢ２，Ｍｎ
    Ｂ２，ＺｒＢ２，ＨｆＢ２，人ＩＢ２のＭＢ２型ホウ化
    物およびＭＯ２ Ｂ５ ，Ｗ２ Ｂ５の高温時１こＭＢ
    ２型になるＭ２Ｂ２型ホウ化物の中から選ばれたホウ化
    金属の１種以上と、ＴａＢ，ＮｂＢ，ＷＢ，ＺｒＢ，Ｈ
    ｆＢ，ＭｏＢ，ＶＢのＭＢ型ホウ化物の中から選ばれた
    ホウ化金属の１種以上と、全量に基づき０．０１〜５０
    重量％のホウ化ニッケル、ホウ化鉄、ホウ化コバルト、
    ホウ化マンガン、ホウ化チタンおよびニッケルリ？合金
    の中から選ばれた結合剤の１種以上とを基本組成とし、
    これ１こＴｉＣ，ＷＣ，Ｍｏ２Ｃ ，Ｂ４Ｃ，ＴａＣ，
    ＮｂＣ，ＶＣ，ＴａＮ，ＴｉＮ，ＶＮ，ＭｏＳｉ２，Ｔ
    ｘＯ，Ｔ＋０２ ，’ｒｉ２ ｏ３２Ａｌ０３，Ａｌ２
    ０３，Ｂ２０３およびＺｒＯ２の中から選ばれた改良剤
    の１種以上を全量１こ基づき０．１〜５０重量％の割合
    で添加しで成る焼結材料。
JP55117362A 1980-08-26 1980-08-26 高強度複合焼結材料 Expired JPS5837274B2 (ja)

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JP55117362A JPS5837274B2 (ja) 1980-08-26 1980-08-26 高強度複合焼結材料
US06/241,235 US4379852A (en) 1980-08-26 1981-03-06 Boride-based refractory materials

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Application Number Priority Date Filing Date Title
JP55117362A JPS5837274B2 (ja) 1980-08-26 1980-08-26 高強度複合焼結材料

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JPS5742578A JPS5742578A (en) 1982-03-10
JPS5837274B2 true JPS5837274B2 (ja) 1983-08-15

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