JP5597693B2 - 炭化珪素質焼結体およびこれを用いた摺動部品ならびに対飛翔体用防護体 - Google Patents
炭化珪素質焼結体およびこれを用いた摺動部品ならびに対飛翔体用防護体 Download PDFInfo
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Description
状炭化珪素粒子が6面積%以上15面積%以下存在することを特徴とするものである。
の粗粒状炭化珪素粒子が6面積%以上15面積%以下存在することから、熱衝撃または機械的な衝撃により微細なクラックが生じたとしても粗粒状炭化珪素粒子によってクラックの進展を抑制することができるので、強度,剛性等の機械的特性とともに、耐熱衝撃性に優れた炭化珪素質焼結体とすることができる。
いることができる。
T.D=1/(0.01×(a/3.21+b/2.26))・・・(1)
例えば、炭化珪素質焼結体を構成する成分の含有量が、炭化珪素が90質量%であり、グラファイトが10質量%であるときには、式(1)を用いて計算すると、炭化珪素質焼結体の理論密度(T.D)は、3.08g/cm3となり、JIS R 1634−1998に準拠して求めた炭化珪素質焼結体の見掛密度を、この理論密度(T.D)3.08g/cm3で除すことにより相対密度を求めることができる。
ればよい。
<摺動条件>
・相対速度:8m/秒
・面圧 :400kPa
・潤滑液 :水
なお、相対速度は回転軸の中心を基準として外周側に向かい、11.25mm離れた位置(以下、位置Pという。)における固定部材5aに対する可動部材5bの回転速度である。面圧は、固定部材5aに対する可動部材5bの単位面積当たりの圧力であり、固定部材5aと可動部材5bとを当接させるのに予め設定された加圧力Fを可動部材5bの摺動面15bの面積で除すことで求められ、面積は、寸法測定用のゲージを備えた光学顕微鏡を用い、倍率を50倍として可動部材5bの凸状部の外径および内径をゲージで測定し算出した。
18755−2005(MOD)),JIS R 1601−2008(ISO 14704−2000(MOD))に準拠して測定した。
1b:粗粒状炭化珪素粒子
5:メカニカルシールリング
5a:固定リング
5b:回転リング
16:フォーセットバルブ
17:固定弁体
18:可動弁体
20:転がり軸受
21:第1部材(外輪)
22:第2部材(内輪)
23:転動体
Claims (7)
- 炭化珪素粒子を主構成とし、該炭化珪素粒子の平均結晶粒径が2μm以上6μm以下であり、相対密度が95%以上であり、炭化硼素を含む炭化珪素質焼結体であり、該炭化珪素質焼結体の観察面において、面積が170μm2以上の粗粒状炭化珪素粒子が6面積%以上15面積%以下存在することを特徴とする炭化珪素質焼結体。
- 前記粗粒状炭化珪素粒子は、アスペクト比(長径/短径)の平均値が1以上2以下であることを特徴とする請求項1に記載の炭化珪素質焼結体。
- 前記粗粒状炭化珪素粒子は、カルシウムを含んでいることを特徴とする請求項1または請求項2に記載の炭化珪素質焼結体。
- グラファイトを含み、該グラファイトの含有量が10質量%以下であることを特徴とする請求項1乃至請求項3のいずれかに記載の炭化珪素質焼結体。
- 前記グラファイトは、平均結晶粒径が4μm以上43μm以下であることを特徴とする請求項4に記載の炭化珪素質焼結体。
- 請求項1乃至請求項5のいずれかに記載の炭化珪素質焼結体の表面を研磨してなることを特徴とする摺動部品。
- 請求項1乃至請求項5のいずれかに記載の炭化珪素質焼結体を用いたことを特徴とする対飛翔体用防護体。
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JP2012501846A JP5597693B2 (ja) | 2010-02-24 | 2011-02-24 | 炭化珪素質焼結体およびこれを用いた摺動部品ならびに対飛翔体用防護体 |
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JP2010038947 | 2010-02-24 | ||
JP2010038947 | 2010-02-24 | ||
JP2012501846A JP5597693B2 (ja) | 2010-02-24 | 2011-02-24 | 炭化珪素質焼結体およびこれを用いた摺動部品ならびに対飛翔体用防護体 |
PCT/JP2011/054150 WO2011105490A1 (ja) | 2010-02-24 | 2011-02-24 | 炭化珪素質焼結体およびこれを用いた摺動部品ならびに防護体 |
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JPWO2011105490A1 JPWO2011105490A1 (ja) | 2013-06-20 |
JP5597693B2 true JP5597693B2 (ja) | 2014-10-01 |
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JP6059008B2 (ja) * | 2012-12-27 | 2017-01-11 | 京セラ株式会社 | 回転継手 |
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US10262917B2 (en) * | 2014-03-25 | 2019-04-16 | Kyocera Corporation | Flow passage member and semiconductor module |
JP2016204221A (ja) * | 2015-04-24 | 2016-12-08 | 京セラ株式会社 | 炭化珪素質焼結体およびこれを用いた摺動部材、ならびにフォーセットバルブ |
KR20180108637A (ko) * | 2016-01-27 | 2018-10-04 | 스미토모 오사카 세멘토 가부시키가이샤 | 세라믹스 재료, 정전 척 장치 |
CN106402391A (zh) * | 2016-11-07 | 2017-02-15 | 宁波欧翔精细陶瓷技术有限公司 | 一种机械密封用碳化硅烧结材料以及使用该材料的机械密封装置 |
JP7025969B2 (ja) * | 2018-03-26 | 2022-02-25 | 日本碍子株式会社 | 多孔質材料、セル構造体および多孔質材料の製造方法 |
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US9388083B2 (en) | 2016-07-12 |
JPWO2011105490A1 (ja) | 2013-06-20 |
EP2540688A4 (en) | 2013-10-30 |
WO2011105490A1 (ja) | 2011-09-01 |
EP2540688A1 (en) | 2013-01-02 |
EP2540688B1 (en) | 2019-03-20 |
CN102770394A (zh) | 2012-11-07 |
CN102770394B (zh) | 2014-12-31 |
US20120321853A1 (en) | 2012-12-20 |
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