High-wear-resistance beryllium oxide-zirconium oxide core-shell structure ceramic ball as well as preparation method and application thereof
A technology of core-shell structure and ceramic ball, which is applied in the field of high wear-resistant beryllium oxide-zirconia core-shell structure ceramic ball and its preparation, can solve the problems affecting the service life of the target ball and the stability of the target device, and achieve good coating effect , Improve wear resistance, high sphericity effect
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Embodiment 1
[0032] A high wear-resistant beryllium oxide-zirconia core-shell ceramic ball, the structure of which is BeO small ball inside the ceramic ball, ZrO wrapped outside 2 The core-shell structure, wherein the average diameter of the BeO spheres is 0.6mm, the outer ZrO 2 The average thickness of the layers was 0.4 mm.
[0033] The preparation method comprises the following steps:
[0034] The raw material 99.9% high-purity nano BeO ceramic powder and deionized water are weighed according to the formula of mass ratio = 1:0.6, and the materials are mixed by ball milling to obtain a BeO ceramic slurry with a solid content of 62%.
[0035] The uniformly mixed ceramic slurry is transported through the filter by a peristaltic pump to the centrifugal sprayer installed on the top of the drying chamber for spray drying. The inlet temperature of the dryer is controlled at 250°C, and the outlet temperature is controlled at 120°C. The BeO ceramic slurry is sprayed After drying, it is made in...
Embodiment 2
[0044] A high wear-resistant beryllium oxide-zirconia core-shell ceramic ball, the structure of which is a core-shell structure in which BeO balls are inside the ceramic ball and ZrO2 is wrapped on the outside, wherein the average diameter of the BeO balls is 0.7mm, External ZrO 2 The average thickness of the layers was 0.4 mm.
[0045] The preparation method comprises the following steps:
[0046] The raw material 99.9% high-purity nano BeO ceramic powder and deionized water are weighed according to the formula of mass ratio = 1:0.7, and the materials are mixed by ball milling to obtain a BeO ceramic slurry with a solid content of 59%;
[0047] The uniformly mixed ceramic slurry is transported through the filter by a peristaltic pump to the centrifugal sprayer installed on the top of the drying chamber for spray drying. The inlet temperature of the dryer is controlled at 270°C, and the outlet temperature is controlled at 130°C. The BeO ceramic slurry is sprayed After drying...
Embodiment 3
[0056] A high wear-resistant beryllium oxide-zirconia core-shell ceramic ball, the structure of which is BeO small ball inside the ceramic ball, ZrO wrapped outside 2 The core-shell structure, wherein the average diameter of the BeO spheres is 0.8mm, the outer ZrO 2 The average thickness of the layers was 0.3 mm.
[0057] The preparation method comprises the following steps:
[0058] The raw material 99.9% high-purity nano-BeO ceramic powder and deionized water are weighed according to the formula of mass ratio = 1:0.8, and the materials are mixed by ball milling to obtain a BeO ceramic slurry with a solid content of 56%;
[0059] The uniformly mixed ceramic slurry is transported through the filter by a peristaltic pump to the centrifugal sprayer installed on the top of the drying chamber for spray drying. The inlet temperature of the dryer is controlled at 290°C, and the outlet temperature is controlled at 140°C. The BeO ceramic slurry is sprayed After drying, it is made in...
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