Insoluble in water and alkali, soluble in acid.
|Y2O3/REO % Min||99.999||99.99||99.9||99|
|REO % Min||99||99||99||98.5|
|REO % RE impurities Max||0.001||0.01||0.1||1|
|Non-RE impurities% Max||Fe2O3||0.0005||0.001||0.002||0.005|
|1000°C 1h %Max||1||1||1||1.5|
Mainly used for the production of microwave magnetic materials and an important material for military use (single crystal; yttrium iron garnet, yttrium aluminum garnet and other composite oxide), also used as an optical glass, ceramic materials additives, big-screen TV with a high-brightness phosphor and other CRT coatings. Also used in the manufacture of film capacitors and special refractories, as well as high-pressure mercury lamp, a laser, a magnetic bubble storage element and other materials. Added sintering yttrium oxide can effectively reduce the grain size of tungsten alloy.
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