JP4560387B2 - 溶射用粉末、溶射方法及び溶射皮膜 - Google Patents
溶射用粉末、溶射方法及び溶射皮膜 Download PDFInfo
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Description
北川高郎ら,「セラミックスの耐プラズマ性評価」,住友大阪セメント、テクニカルレポート2004年版,住友大阪セメント株式会社新規技術研究所,平成15年12月15日,p.17−22
請求項3に記載の発明は、焼結後の一次粒子の平均粒子径が0.2〜3.0μmである請求項1又は2に記載の溶射用粉末を提供する。
請求項6に記載に発明は、請求項1〜4のいずれか一項に記載の溶射用粉末をプラズマ溶射する溶射方法を提供する。
本実施形態に係る溶射用粉末は、イットリウム−アルミニウム複酸化物の造粒−焼結粉末からなり、例えばプラズマ溶射により溶射皮膜を形成する用途において使用される。
・ 本実施形態に係る溶射用粉末では、二次粒子の圧壊強度が15MPa以上に設定されるとともに、溶射用粉末の10%粒子径D10が6μm以上に設定されている。そのため、本実施形態に係る溶射用粉末によれば、スピッティングの発生及びパウダーチューブの閉塞が良好に抑制された状態で、イットリウム−アルミニウム複酸化物の溶射皮膜を良好に形成可能である。
・ 溶射用粉末は、イットリウム−アルミニウム複酸化物の造粒−焼結粉末以外の成分を含有してもよい。ただし、溶射用粉末中のイットリウム−アルミニウム複酸化物の造粒−焼結粉末の含有量はできるだけ100%に近いことが好ましい。
次に、本発明の実施例及び比較例を説明する。
表1の“圧壊強度”欄には、式:σ=2.8×L/π/d2に従って算出される各溶射用粉末中の二次粒子の圧壊強度σ[MPa]を示す。式中、Lは臨界荷重[N]を表し、dは二次粒子の平均粒子径[mm]を表す。臨界荷重は、圧子により溶射用粉末に一定速度で増加する圧縮荷重を加えたときに、圧子の変位量が急激に増加する時点において溶射用粉末に加えられていた圧縮荷重の大きさである。この臨界荷重の測定は、(株)島津製作所社製の微小圧縮試験装置“MCTE−500”を用いて行った。
表1の“嵩比重”欄には、筒井理化学器械(株)製のJIS見掛密度測定器(JIS-Z-2504参照)を用いて測定した各溶射用粉末の嵩比重を示す。
・ 複酸化物中のアルミナに換算したアルミニウムのモル数に対するイットリアに換算したイットリウムのモル数の比率が0.2〜4.0であることを特徴とする前記溶射用粉末。
・ 溶射用粉末の安息角が50度以下であることを特徴とする前記溶射用粉末。
Claims (7)
- イットリウムとアルミニウムを含む複酸化物の造粒−焼結粉末を含有する溶射用粉末であって、造粒−焼結粉末は、一次粒子を造粒及び焼結して得られる二次粒子からなり、二次粒子の圧壊強度は15MPa以上であり、溶射用粉末の10%粒子径は6μm以上であり、溶射用粉末のX線回折を測定したとき、複酸化物中のガーネット相の(420)面に由来するX線回折ピークと複酸化物中のペロブスカイト相の(420)面に由来するX線回折ピークと複酸化物中の単斜晶相の(−122)面に由来するX線回折ピークのうちの最大ピークの強度に対するイットリアの(222)面に由来するX線回折ピークの強度の比率が20%以下であることを特徴とする溶射用粉末。
- 前記二次粒子の圧壊強度が300MPa以下であることを特徴とする請求項1に記載の溶射用粉末。
- 焼結後の一次粒子の平均粒子径が0.2〜3.0μmであることを特徴とする請求項1又は2に記載の溶射用粉末。
- 焼結後の一次粒子の粒度の分散指数が0.50以下であることを特徴とする請求項1〜3のいずれか一項に記載の溶射用粉末。
- プラズマ溶射により溶射皮膜を形成する用途において使用されることを特徴とする請求項1〜4のいずれか一項に記載の溶射用粉末。
- 請求項1〜4のいずれか一項に記載の溶射用粉末をプラズマ溶射することを特徴とする溶射方法。
- 請求項1〜4のいずれか一項に記載の溶射用粉末をプラズマ溶射して形成されることを特徴とする溶射皮膜。
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KR1020050114977A KR20060060612A (ko) | 2004-11-30 | 2005-11-29 | 용사용 분말, 용사 방법 및 용사 피막의 형성방법 |
TW094141898A TW200631698A (en) | 2004-11-30 | 2005-11-29 | Thermal spraying powder, thermal spraying method, and method for forming thermal spray coating |
US11/289,830 US7842383B2 (en) | 2004-11-30 | 2005-11-30 | Yttrium-aluminum double oxide thermal spraying powder |
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JP4912598B2 (ja) * | 2005-02-15 | 2012-04-11 | 株式会社フジミインコーポレーテッド | 溶射用粉末 |
DE102006046517A1 (de) * | 2005-09-30 | 2007-05-03 | Fujimi Incorporated, Kiyosu | Thermisches Spritzpulver und Verfahren zur Ausbildung einer thermischen Spritzbeschichtung |
KR100877381B1 (ko) * | 2006-07-20 | 2009-01-09 | 충남대학교산학협력단 | 고저항 세라믹 열용사 코팅 소재 및 이를 포함하는정전척의 제조방법 |
JP5039346B2 (ja) * | 2006-09-12 | 2012-10-03 | 株式会社フジミインコーポレーテッド | 溶射用粉末及び溶射皮膜 |
EP1911858B1 (de) * | 2006-10-02 | 2012-07-11 | Sulzer Metco AG | Verfahren zur Herstellung einer Beschichtung mit kolumnarer Struktur |
JP5058645B2 (ja) * | 2007-03-27 | 2012-10-24 | トーカロ株式会社 | 溶射用粉末、溶射皮膜及びハースロール |
JP5047741B2 (ja) * | 2007-09-13 | 2012-10-10 | コバレントマテリアル株式会社 | 耐プラズマ性セラミックス溶射膜 |
KR100863457B1 (ko) * | 2008-01-14 | 2008-11-18 | 주식회사 코미코 | 용사 코팅층 형성 방법 및 용사 코팅층 형성 방법에 의해형성된 용사 코팅층 |
JP2012188677A (ja) * | 2011-03-08 | 2012-10-04 | Fujimi Inc | 溶射用粉末 |
FR2998561B1 (fr) * | 2012-11-29 | 2014-11-21 | Saint Gobain Ct Recherches | Poudre haute purete destinee a la projection thermique |
US20170189960A1 (en) * | 2014-06-20 | 2017-07-06 | Fujimi Incorporated | Powder material for powder additive manufacturing and powder additive manufacturing method using same |
JP6578106B2 (ja) * | 2015-02-24 | 2019-09-18 | 株式会社フジミインコーポレーテッド | 溶射用粉末 |
FR3077287B1 (fr) * | 2018-01-31 | 2023-09-22 | Saint Gobain Ct Recherches | Poudre pour revetement de chambre de gravure |
KR102085420B1 (ko) | 2018-03-28 | 2020-03-05 | (주)세원하드페이싱 | 유동성 향상을 위한 마이크로파 플라즈마를 이용한 세라믹 분말의 표면 처리 방법 |
KR20220002296A (ko) | 2019-04-26 | 2022-01-06 | 닛폰 이트륨 가부시키가이샤 | 성막용 또는 소결용 분말 |
WO2021229914A1 (ja) | 2020-05-12 | 2021-11-18 | 日本イットリウム株式会社 | 成膜用又は焼結用粉末 |
CN116635349A (zh) * | 2021-01-26 | 2023-08-22 | 日本钇股份有限公司 | 烧结体 |
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