| 发明名称 |
Magnesium doped beta -aluminum titanate thin film coating |
| 摘要 |
MgxAl2-2xTi1+xO5 (x</=0.2) protective coatings have been developed for both dense and porous substrates, such as SiC and Si3N4, using a chemical solution processing method involving the hydrolysis and condensation of magnesium, aluminum and titanium precursors. The solution viscosities, pH values, H2O/alkoxide molar ratios, and dip coating withdrawal rates which are optimum for crack-free MgxAl2-2xTi1+xO5 (x</=0.2) are 1.0 to 6.2 cP, pH 1-4.5, molar ratio 1.5-10, and withdrawal rate of 2.2-8.0 cm/min, respectively. Conversion of the amorphous coating to crystalline MgxAl2-2xTi1+xO5 (x</=0.2) is achieved by a succession of calcination below 450 DEG C. and a final heat treatment above 1000 DEG C. for ten hours with controlled heating and cooling rates.
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| 申请公布号 |
US5565245(A) |
申请公布日期 |
1996.10.15 |
| 申请号 |
US19950396242 |
申请日期 |
1995.03.01 |
| 申请人 |
VIRGINIA TECH INTELLECTUAL PROPERTIES, INC. |
发明人 |
SUN, TAWEI;BROWN, NANCY R.;BROWN, JR., JESSE J.;KANG, MIN |
| 分类号 |
C01G23/00;C04B41/50;C04B41/87;C23C18/12;(IPC1-7):B05D1/18 |
主分类号 |
C01G23/00 |
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