JP2007523043A - 焼結体 - Google Patents
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Abstract
【選択図】 図2
Description
本出願は、2004年2月20日付け申請済み米国仮特許出願第60/546,669号に対して優先権を主張するものであり、この参照により本明細書に組み込まれるものである。
本例では、白鋳鉄被加工物について2回の標準機械加工試験を実施した。これら2回の試験は、種々の産業用途に見られる広い範囲にわたりPCBN材料を評価するため、異なるグレードの白鉄および異なる機械加工条件で実施している。最適な工具材料は、どちらの標準試験でも優れた性能を示すはずである。標準試験手順の条件は、表1のとおりである。工具性能は、被加工物を直線状に約25,000インチ機械加工した後、工具逃げ面の磨耗を測定することにより決定し、逃げ面磨耗0.001インチ当たりの機械加工済み直線状インチ単位で以下に報告している。この逃げ面磨耗0.001インチ当たりの直線状インチの、試験Aおよび試験Bの平均を、工具性能の主な指標としている。
Claims (11)
- 立方晶窒化ホウ素(cubic boron nitride、略称cBN)部分と非cBN部分とを有する焼結体であって、
(a)約71〜約93体積%のcBNと、
(b)約1〜約20体積%の酸化アルミニウムと、
(c)約3〜約26体積%の1若しくはそれ以上の高融点金属化合物であって、
i. 一般式MZ(1−x)を有する化合物と、
ii. 一般式MC(1−x)Nxを有する化合物と、
iii.それぞれ一般式MZまたはMZ2を有する2若しくはそれ以上の化合物の組み合わせまたは固溶体と
からなる群から選択され、
ここで、
ZはC、B、N、およびこれらの組み合わせからなる群から選択され、Mは周期表第IV〜VI族のいずれかの金属であり、xは0.01〜0.99の数である、前記約3〜約26体積%の1若しくはそれ以上の高融点金属化合物と、
(d)約3〜約20体積%の1若しくはそれ以上の非酸化アルミニウム化合物の原料と
を有し、
前記焼結体の前記非cBN部分におけるアルミニウム含有量が約30重量%を超えるものである、
焼結体。 - 請求項1記載の焼結体において、前記1若しくはそれ以上の高融点金属化合物は、TiC(1−x)Nx、若しくはTiC、TiN、TiB2、TiN(1−x)、およびTiC(1−x)Nxからなる群から選択される少なくとも2つの材料の混合物のうち少なくとも1つを含有し、xは0.01〜0.99の数である。
- 請求項1記載の焼結体において、前記cBNは、少なくとも二峰性の粒径分布を有するものである。
- 請求項3記載の焼結体は、前記cBNの約40%〜約80%を有する粗い部分と、前記cBNの約20〜約60%を有する細かい部分とを有し、
前記粗い部分は約5〜約30μmの平均粒径を有し、前記細かい部分は約0〜約10μmの平均粒径を有し、
前記粗い部分の平均粒径の前記細かい部分の平均粒径に対する比は、約2:1以上である。 - 請求項1記載の焼結体において、前記焼結体は非炭化物で支持された形態である。
- 請求項1記載の焼結体において、前記1若しくはそれ以上の非酸化アルミニウム化合物を形成するアルミニウムの少なくとも一部は、焼結中、粉末混合物に接触して配置される箔形態または他の固形の金属アルミニウムから成るものである。
- 立方晶窒化ホウ素(cBN)部分と非cBN部分とを有する焼結体を作成する方法であって、
(A)混合物を調製する工程であって、
(a)約71〜約93体積%のcBNと、
(b)約1〜約20体積%の酸化アルミニウムと、
(c)約3〜約26体積%の1若しくはそれ以上の高融点金属化合物であって、
i. 一般式MZ(1−x)を有する化合物と、
ii. 一般式MC(1−x)Nxを有する化合物と、
iii.それぞれ一般式MZまたはMZ2を有する2若しくはそれ以上の化合物の組み合わせまたは固溶体と
からなる群から選択され、
ZはC、B、N、およびこれらの組み合わせからなる群から選択され、Mは周期表第IV〜VI族からの金属であり、xは0.01〜0.99の数である、前記約3〜約26体積%の、1若しくはそれ以上の高融点金属化合物と、
(d)約3〜約20体積%の金属アルミニウムの原料と
を有し、
この粉末混合物の前記非cBN部分におけるアルミニウム総含有量が約30重量%を超えるものである、前記混合物を調製する工程と、
(B)焼結体を生成するため、前記混合物に高圧高温(high pressure and high temperature、略称HP/HT)条件を適用する工程と
を有する方法。 - 請求項7記載の方法において、前記HP/HT条件は、約25〜約75kbarの圧力および約1000℃以上の温度を含むものである。
- 請求項7記載の方法において、前記cBNは、少なくとも二峰性または多峰性の粒径分布を有するものである。
- 請求項9記載の方法において、
前記焼結体は、前記cBNの約40%〜約80%を有する粗い部分と、前記cBNの約20%〜約60%を有する細かい部分とを有し、
前記粗い部分は約5〜約30μmの平均粒径を有し、前記細かい部分は約0〜約10μmの平均粒径を有し、
前記粗い部分の平均粒径の前記細かい部分の平均粒径に対する比は、約2:1以上である。 - 請求項7記載の方法において、この方法は、さらに、
焼結中、箔形態または他の固形のアルミニウムを前記粉末混合物に接触させて配置する工程を有するものである。
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US54666904P | 2004-02-20 | 2004-02-20 | |
PCT/US2005/005276 WO2005082809A1 (en) | 2004-02-20 | 2005-02-18 | Sintered compact |
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EP (1) | EP1716086B1 (ja) |
JP (2) | JP2007523043A (ja) |
KR (1) | KR100843994B1 (ja) |
CN (1) | CN1922119B (ja) |
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JP2009513471A (ja) * | 2005-10-28 | 2009-04-02 | エレメント シックス (プロダクション)(プロプライエタリィ) リミテッド | 立方晶系窒化ホウ素成形体 |
JP2016520030A (ja) * | 2013-04-30 | 2016-07-11 | エレメント シックス リミテッド | Pcbn材料、それを作製するための方法、それを含むツール、およびそれを使用する方法 |
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JP2023506092A (ja) * | 2020-01-31 | 2023-02-14 | エレメント シックス (ユーケイ) リミテッド | 多結晶立方晶窒化ホウ素材料 |
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JP2008517869A (ja) * | 2004-10-29 | 2008-05-29 | エレメント シックス (プロダクション)(プロプライエタリィ) リミテッド | 立方晶系窒化硼素成形体 |
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JP2016520030A (ja) * | 2013-04-30 | 2016-07-11 | エレメント シックス リミテッド | Pcbn材料、それを作製するための方法、それを含むツール、およびそれを使用する方法 |
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JP2023506092A (ja) * | 2020-01-31 | 2023-02-14 | エレメント シックス (ユーケイ) リミテッド | 多結晶立方晶窒化ホウ素材料 |
JP2023506581A (ja) * | 2020-01-31 | 2023-02-16 | エレメント シックス (ユーケイ) リミテッド | 多結晶立方晶窒化ホウ素材料 |
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EP1716086A1 (en) | 2006-11-02 |
KR20060135763A (ko) | 2006-12-29 |
CN1922119A (zh) | 2007-02-28 |
WO2005082809A1 (en) | 2005-09-09 |
EP1716086B1 (en) | 2008-04-30 |
US20110209414A1 (en) | 2011-09-01 |
US7932199B2 (en) | 2011-04-26 |
JP5680567B2 (ja) | 2015-03-04 |
CN1922119B (zh) | 2013-11-13 |
ATE393760T1 (de) | 2008-05-15 |
DE602005006389T2 (de) | 2009-06-10 |
KR100843994B1 (ko) | 2008-07-07 |
US20050187093A1 (en) | 2005-08-25 |
US8067323B2 (en) | 2011-11-29 |
JP2012131700A (ja) | 2012-07-12 |
DE602005006389D1 (de) | 2008-06-12 |
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