Effect of zirconia additions on the reaction sintering of aluminium titanate

Thomas, Hans; Stevens, R.; Gilbart, E.

doi:10.1007/bf00557152

Cited by 35 publications

(18 citation statements)

References 2 publications

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“…During cooling, the characteristic hysteresis loop appears with the sharp expansion below 600 • C, which is associated with the expansion and propagation of cracks. 1,5,7,14,17,18,26 The 3 wt.% MgO doped sample presents a delay in the expansion during heating which starts being observed at about 900 • C, and also the characteristic hysteresis loop during cooling, with the expansion starting at somewhat lower temperature. Increased expansion, as expected, is observed in the 8 wt.% MgO doped sample.…”

Section: Thermal Expansion Behaviormentioning

confidence: 96%

“…2,4,7,10,11,13,14,[24][25][26][27][28][29][30] Among them, Fe 2 O 3 and MgO have been considered to be the most effective ones. 4,7,13,14,[24][25][26][27][28][29][30] However, a quite high percentage of MgO (of the order of 10-25 mol%) is required for an effective stabilization, and even this could not keep the material stable for more than a hundred of hours at the temperature of the maximum decomposition rate (1100 • C). 7,14,27 Slightly better stability efficiency is reported with Fe 2 O 3 additions, 4,13,24 which in some cases led to material stable for about 300 h of annealing at 1000 • C in an oxidizing atmosphere.…”

Section: Introductionmentioning

confidence: 99%

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A comparison study of tialite ceramics doped with various oxide materials and tialite–mullite composites: microstructural, thermal and mechanical properties

Tsetsekou

2005

Journal of the European Ceramic Society

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Section: Thermal Expansion Behaviormentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

A comparison study of tialite ceramics doped with various oxide materials and tialite–mullite composites: microstructural, thermal and mechanical properties

Tsetsekou

2005

Journal of the European Ceramic Society

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“…Thus, tialite is a metastable phase at room temperature and eutectoid reactions could instantly transform it into the corundum and rutile phases at temperatures between 800°C and 1280°C [1][2][3][4][5][6]. Studies were carried out on methods to avoid such tialite decomposition phenomena by the addition of several oxides known to form solid solutions with aluminum titanate [2,[4][5][6][7][8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Tialite formation from its quasi-amorphous stoichiometric co-precipitated powder by thermal spray process

Camaratta

Zimmer

Bergmann

2009

Surface and Coatings Technology

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In this work, the formation of tialite from powders obtained by the co-precipitation method with inorganic salts was investigated. For the co-precipitation process, a solution of aluminum nitrate (Al(NO 3 ) 3 9H 2 O) and titanium tetrachloride (TiCl 4 ) in ethyl alcohol was co-precipitated with an increase in ammonium hydroxide base. Phase transformations of the quasi-amorphous dried gel with stoichiometric composition of tialite treated in a muffle furnace and in an atmospheric plasma thermal spray deposition were explored. The effect of calcination thermal treating on the tialite formation was evaluated for different temperatures (400, 600, 800, 900, 1000, 1200, 1300, and 1400°C). The powder was thermally treated by calcination at 600°C for 6 h prior to the thermal spray process. Dried gel pieces were also calcined at 600°C for 6 h and ground, the produced powders were thermally sprayed onto a stainless steel substrate and the formed coating was mechanically detached from the substrate and then characterized. It was confirmed that the thermal spray process transformed the quasi-amorphous powders to single tialite phase. The absence of the corundum and rutile phases was attributed to the high heating and cooling rates (~10 6 K/s) supplied by thermal spray processing.

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“…Zirconium titanate gels directly crystallize into ZrTiO4 at about 650 ~ C, without the intermediate formation of ZrO2 and Tit2, only when a high level of homogeneity has been achieved [10][11][12][13]. Aluminium titanate is not stable below 1200~ and decomposes as a function of time into A1203 and Tit2 [9,10].…”

Section: Introductionmentioning

confidence: 96%

Nonhydrolytic Sol-Gel process: Aluminium and zirconium titanate gels

Mahandrimanana

Corriu

Leclercq

et al. 1997

J Sol-Gel Sci Technol

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Abstract. The effectiveness of nonhydrolytic Sol-Gel process to the synthesis of homogeneous bicomponent gels has been studied in the case of aluminium titanate and zirconium titanate. The direct crystallization of A12TiO5 and ZrTiO4 at low temperature without the intermediate formation of Tit2 or A1203 in the former case and Tit2 or ZrO2 in the latter indicates that homogeneous bicomponent gels have been formed by this route.

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Effect of zirconia additions on the reaction sintering of aluminium titanate

Cited by 35 publications

References 2 publications

A comparison study of tialite ceramics doped with various oxide materials and tialite–mullite composites: microstructural, thermal and mechanical properties

A comparison study of tialite ceramics doped with various oxide materials and tialite–mullite composites: microstructural, thermal and mechanical properties

Tialite formation from its quasi-amorphous stoichiometric co-precipitated powder by thermal spray process

Nonhydrolytic Sol-Gel process: Aluminium and zirconium titanate gels

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