Preparation of amorphous mixed metal oxides and their use as feedstocks in thermal spray coating
First Claim
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1. A method of spray coating, comprising feeding an amorphous mixed metal oxide to a thermal spray coating device;
- wherein the amorphous mixed metal oxide is selected from the group consisting of alumina-zirconia (Al2O3—
ZrO2), magnesia-yttria (MgO—
Y2O3), yttria-yttria alumina garnet (Y2O3—
YAG), alumina-yttria alumina garnet (Al2O3—
YAG), alumina-spinel (Al2O3—
MgAl2O4), zirconia-spinel (ZrO2—
MgAl2O4), zirconia-iron oxide (ZrO2—
Fe2O3), and mixtures thereof.
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Abstract
Amorphous mixed metal oxides are used as a feedstock for thermal spray coating. Compared to thermal spray coating methods utilizing crystalline metal oxide feedstocks, the present method reduces energy consumption and expands the range of feedstock chemical compositions. The present method also produces coatings with improved chemical homogeneity. Methods of preparing the amorphous mixed metal oxides are also described.
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Citations
16 Claims
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1. A method of spray coating, comprising feeding an amorphous mixed metal oxide to a thermal spray coating device;
- wherein the amorphous mixed metal oxide is selected from the group consisting of alumina-zirconia (Al2O3—
ZrO2), magnesia-yttria (MgO—
Y2O3), yttria-yttria alumina garnet (Y2O3—
YAG), alumina-yttria alumina garnet (Al2O3—
YAG), alumina-spinel (Al2O3—
MgAl2O4), zirconia-spinel (ZrO2—
MgAl2O4), zirconia-iron oxide (ZrO2—
Fe2O3), and mixtures thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
- wherein the amorphous mixed metal oxide is selected from the group consisting of alumina-zirconia (Al2O3—
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