CERAMIC SINTERED BODY

CERAMIC SINTERED BODY

To prevent creep deformation from occurring due to stress under high-temperature environment while preventing a ceramic sintered body from being cracked due to degradation in sinterability thereof.SOLUTION: A ceramic sintered body formed with at least one of a stabilized zirconia and a partially sta...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SUGA YOHEI, UTSUKI RYOTA, IGAI YOSHIHITO, KOZUKA HISASHI
Format: Patent
Sprache:eng ; jpn
Schlagworte:
ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
LIME, MAGNESIA
METALLURGY
REFRACTORIES
SLAG
TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:To prevent creep deformation from occurring due to stress under high-temperature environment while preventing a ceramic sintered body from being cracked due to degradation in sinterability thereof.SOLUTION: A ceramic sintered body formed with at least one of a stabilized zirconia and a partially stabilized zirconia contains at least one of a Ta component and an Nb component. In the ceramic sintered body, when a content of the Ta component is Ct(wt.%) in terms of Ta2O5, and when a content of the Nb component is Cn(wt.%) in terms of Nb2O5, the ceramic sintered body satisfies the equation: 0.1≤Ct+Cn≤6.0.SELECTED DRAWING: Figure 2 【課題】セラミックス焼結体の焼結性の低下による割れの発生を抑制しつつ、高温環境下での応力によるクリープ変形の発生を抑制する。【解決手段】安定化ジルコニアと部分安定化ジルコニアとの少なくとも一方により形成されたセラミックス焼結体は、Ｔａ成分とＮｂ成分との少なくとも一方を含有する。該セラミックス焼結体において、Ｔａ成分の含有量をＴａ２Ｏ５換算でＣｔ（ｗｔ％）とし、Ｎｂ成分の含有量をＮｂ２Ｏ５換算でＣｎ（ｗｔ％）としたとき、該セラミックス焼結体は、数式：０．１≦Ｃｔ＋Ｃｎ≦６．０を満たす。【選択図】図２