A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
HIGH STATIC FATIGUE ALUMINA ISOPIPE
PROBLEM TO BE SOLVED: To provide an isopipe comprising a body having a configuration adapted for use in a fusion process.SOLUTION: There is provided an alumina isopipe 13 having a body (i) comprising at least 90 vol.% of crystalline AlO, (ii) comprising an alumina refractory comprising a glass phase, wherein (a) a glass of the glass phase comprises alumina and silica which constitute at least 90 mol% of the glass in terms of oxide, (b) the glass has the content of alkali earth plus rare earth of 2 mol% or more in terms of oxide, (c) the glass has the alkali content of 5.5 mol% or less. The alumina isopipe has static fatigue in terms of time-to-failure of at least 1 hour when tested at 1200°C at an applied stress of 10,000 psi (about 69 MPa).SELECTED DRAWING: Figure 1
【課題】フュージョン法に使用するのに適した構造を有する本体を含むアイソパイプの提供。【解決手段】（ｉ）少なくとも９０体積％の結晶性Ａｌ2Ｏ3を含み、（ｉｉ）ガラス相を含むアルミナ耐火物を含み、このガラス相のガラスが、（ａ）アルミナとシリカを含み、酸化物基準で、前記アルミナとシリカが前記ガラスの少なくとも９０モル％を構成し、（ｂ）酸化物基準で、前記ガラスが、２モル％以上の、アルカリ土類に希土類を加えた含有量を有し、（ｃ）酸化物基準で、前記ガラスが、５．５モル％以下のアルカリ含有量を有し、１０，０００ｐｓｉ（約６９ＭＰａ）の応力を印加して１２００℃で試験したときに、少なくとも１時間の破損するまでの時間に関する静疲労を有するアルミナ製アイソパイプ１３。【選択図】図１
HIGH STATIC FATIGUE ALUMINA ISOPIPE
PROBLEM TO BE SOLVED: To provide an isopipe comprising a body having a configuration adapted for use in a fusion process.SOLUTION: There is provided an alumina isopipe 13 having a body (i) comprising at least 90 vol.% of crystalline AlO, (ii) comprising an alumina refractory comprising a glass phase, wherein (a) a glass of the glass phase comprises alumina and silica which constitute at least 90 mol% of the glass in terms of oxide, (b) the glass has the content of alkali earth plus rare earth of 2 mol% or more in terms of oxide, (c) the glass has the alkali content of 5.5 mol% or less. The alumina isopipe has static fatigue in terms of time-to-failure of at least 1 hour when tested at 1200°C at an applied stress of 10,000 psi (about 69 MPa).SELECTED DRAWING: Figure 1
【課題】フュージョン法に使用するのに適した構造を有する本体を含むアイソパイプの提供。【解決手段】（ｉ）少なくとも９０体積％の結晶性Ａｌ2Ｏ3を含み、（ｉｉ）ガラス相を含むアルミナ耐火物を含み、このガラス相のガラスが、（ａ）アルミナとシリカを含み、酸化物基準で、前記アルミナとシリカが前記ガラスの少なくとも９０モル％を構成し、（ｂ）酸化物基準で、前記ガラスが、２モル％以上の、アルカリ土類に希土類を加えた含有量を有し、（ｃ）酸化物基準で、前記ガラスが、５．５モル％以下のアルカリ含有量を有し、１０，０００ｐｓｉ（約６９ＭＰａ）の応力を印加して１２００℃で試験したときに、少なくとも１時間の破損するまでの時間に関する静疲労を有するアルミナ製アイソパイプ１３。【選択図】図１
HIGH STATIC FATIGUE ALUMINA ISOPIPE
高静疲労性アルミナ製アイソパイプ
KETCHAM THOMAS D (author) / MCINTOSH JOSEPH J (author) / PARK EUNYOUNG IAN (author)
2016-06-16
Patent
Electronic Resource
Japanese
Static and cyclic fatigue behaviour in alumina ceramics
| British Library Online Contents | 1995
Differences between static and cyclic fatigue effects in alumina
| British Library Online Contents | 1993
Dynamic, static and cyclic fatigue of alumina with indentation-induced flaws
| British Library Online Contents | 1995