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A platform for research: civil engineering, architecture and urbanism
CERAMIC SLIDING MEMBER AND METHOD FOR MANUFACTURING THE SAME
To provide a ceramic sliding member and the like, capable of ensuring high mechanical strength and capable of reducing a friction coefficient at high temperatures.SOLUTION: A ceramic sliding member comprises: a ceramic matrix containing Al; and an active non-oxide dispersed in the matrix. The active non-oxide has the ability to form an oxide by an oxidation reaction with oxygen by contacting with oxygen. Since the oxide functions as a lubricant, it is desirable that a PB ratio is 1.0 or more, but it is even more desirable that the PB ratio exceeds 2.0. In particular, it is preferable that the PB ratio is 2.5 or more, such as NbC, NbN, TaC, and TaN, in which the metal ions are Nb or Ta; and it is especially preferable that the PB ratio is 3.0 or more, such as VC and VN, in which the metal ions are V.SELECTED DRAWING: Figure 3
【課題】高い機械強度を確保することができるとともに、高温での摩擦係数を低減することが可能なセラミックス摺動部材等を提供する。【解決手段】セラミックス摺動部材は、Ａｌを含むセラミックス母材と、前記母材中に分散している酸化活性な非酸化物を含む。酸化活性な非酸化物は、酸素と接触することにより、その酸素と酸化反応を生じて酸化物を形成する能力を有する。酸化物は潤滑剤として機能するため、ＰＢ比が１．０以上であることが望ましいが、ＰＢ比が２．０を超えるものがより望ましい。特に、金属イオンがＮｂやＴａであるＮｂＣ、ＮｂＮ、ＴａＣ、ＴａＮのようにＰＢ比が２．５以上のものがより好ましく、さらには金属イオンがＶであるＶＣやＶＮなどのようなＰＢ比が３．０以上の値を示すものが特に好ましい。【選択図】図３
CERAMIC SLIDING MEMBER AND METHOD FOR MANUFACTURING THE SAME
To provide a ceramic sliding member and the like, capable of ensuring high mechanical strength and capable of reducing a friction coefficient at high temperatures.SOLUTION: A ceramic sliding member comprises: a ceramic matrix containing Al; and an active non-oxide dispersed in the matrix. The active non-oxide has the ability to form an oxide by an oxidation reaction with oxygen by contacting with oxygen. Since the oxide functions as a lubricant, it is desirable that a PB ratio is 1.0 or more, but it is even more desirable that the PB ratio exceeds 2.0. In particular, it is preferable that the PB ratio is 2.5 or more, such as NbC, NbN, TaC, and TaN, in which the metal ions are Nb or Ta; and it is especially preferable that the PB ratio is 3.0 or more, such as VC and VN, in which the metal ions are V.SELECTED DRAWING: Figure 3
【課題】高い機械強度を確保することができるとともに、高温での摩擦係数を低減することが可能なセラミックス摺動部材等を提供する。【解決手段】セラミックス摺動部材は、Ａｌを含むセラミックス母材と、前記母材中に分散している酸化活性な非酸化物を含む。酸化活性な非酸化物は、酸素と接触することにより、その酸素と酸化反応を生じて酸化物を形成する能力を有する。酸化物は潤滑剤として機能するため、ＰＢ比が１．０以上であることが望ましいが、ＰＢ比が２．０を超えるものがより望ましい。特に、金属イオンがＮｂやＴａであるＮｂＣ、ＮｂＮ、ＴａＣ、ＴａＮのようにＰＢ比が２．５以上のものがより好ましく、さらには金属イオンがＶであるＶＣやＶＮなどのようなＰＢ比が３．０以上の値を示すものが特に好ましい。【選択図】図３
CERAMIC SLIDING MEMBER AND METHOD FOR MANUFACTURING THE SAME
セラミックス摺動部材、およびその製造方法
OSHIUMI TARO (author) / TAKEUCHI AKIFUMI (author) / NOKAWA GENYA (author) / OSADA TOSHIRO (author) / GOTO MASAHIRO (author) / HARA TORU (author)
2024-11-08
Patent
Electronic Resource
Japanese
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