A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
KILN FURNITURE
PROBLEM TO BE SOLVED: To provide a kiln furniture excellent in a point that detachment of a coating layer of zirconia hardly occurs, capable of repeatedly bearing thermal cycles with severe conditions of temperature rising and cooling and having long life.SOLUTION: A kiln furniture has ceramic containing SiC as a substrate, a coating layer of mullite forming a boundary surface with the substrate and a coating layer of zirconia in a surface side of the coating layer of mullite and having average porous diameter of the coating layer of the mullite of 1 μm to 50 μm. A value of average pore diameter/cumulative pore diameter (D) of the coating layer of the mullite is preferably in a range of 0.5 to 0.9. Cumulative pore diameter (D) in a pore diameter distribution of the coating layer of the mullite is preferably observed in a range of 2 μm to 70 μm.SELECTED DRAWING: Figure 2
【課題】ジルコニア質の被覆層の剥離の起きにくさの点で優れ、昇温及び冷却の条件の厳しい熱的サイクルにも繰り返し耐えることができ、長寿命の窯道具を提供する。【解決手段】本発明の窯道具は、ＳｉＣ質を含むセラミックスを基材とし、該基材と界面を形成するムライト質の被覆層を有し、該ムライト質の被覆層の表面側に、ジルコニア質の被覆層を有する窯道具であって、前記ムライト質の被覆層の平均気孔径が１μｍ以上５０μｍ以下である。前記ムライト質の被膜層の平均気孔径／累積気孔径（Ｄ５０）値が０．５以上０．９以下の範囲であることが好ましい。前記ムライト質の被覆層の気孔径分布における累積気孔径（Ｄ５０）が、２μｍ以上７０μｍ以下の範囲に観察されることも好ましい。【選択図】図２
KILN FURNITURE
PROBLEM TO BE SOLVED: To provide a kiln furniture excellent in a point that detachment of a coating layer of zirconia hardly occurs, capable of repeatedly bearing thermal cycles with severe conditions of temperature rising and cooling and having long life.SOLUTION: A kiln furniture has ceramic containing SiC as a substrate, a coating layer of mullite forming a boundary surface with the substrate and a coating layer of zirconia in a surface side of the coating layer of mullite and having average porous diameter of the coating layer of the mullite of 1 μm to 50 μm. A value of average pore diameter/cumulative pore diameter (D) of the coating layer of the mullite is preferably in a range of 0.5 to 0.9. Cumulative pore diameter (D) in a pore diameter distribution of the coating layer of the mullite is preferably observed in a range of 2 μm to 70 μm.SELECTED DRAWING: Figure 2
【課題】ジルコニア質の被覆層の剥離の起きにくさの点で優れ、昇温及び冷却の条件の厳しい熱的サイクルにも繰り返し耐えることができ、長寿命の窯道具を提供する。【解決手段】本発明の窯道具は、ＳｉＣ質を含むセラミックスを基材とし、該基材と界面を形成するムライト質の被覆層を有し、該ムライト質の被覆層の表面側に、ジルコニア質の被覆層を有する窯道具であって、前記ムライト質の被覆層の平均気孔径が１μｍ以上５０μｍ以下である。前記ムライト質の被膜層の平均気孔径／累積気孔径（Ｄ５０）値が０．５以上０．９以下の範囲であることが好ましい。前記ムライト質の被覆層の気孔径分布における累積気孔径（Ｄ５０）が、２μｍ以上７０μｍ以下の範囲に観察されることも好ましい。【選択図】図２
KILN FURNITURE
窯道具
UCHIDA TATSUHIKO (author) / TSUTSUMI HIDEKI (author)
2017-03-16
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
/
C23C
Beschichten metallischer Werkstoffe
,
COATING METALLIC MATERIAL
/
F27D
Einzelheiten oder Zubehör für Industrieöfen, Schachtöfen, Brennöfen oder Retorten, soweit sie nicht auf eine Ofenart eingeschränkt sind
,
DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
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