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发明公开
CN109133941A 一种氮化硅陶瓷轴承材料 无效 - 撤回

一种氮化硅陶瓷轴承材料
摘要：
本发明公开了一种氮化硅陶瓷轴承材料，采用25～45wt％的α‑sialon相、10～15wt％的β‑Si3N4相为原料，加入纯度99.99％，平均粒度1μm的Al2O3 5wt％；纯度99.99％，平均粒度0.8μm的Y2O3 5wt％；纯度99.99％，平均粒度0.8μm的Sm2O3 1.5wt％和纯度99.99％，平均粒度0.8μm的Ce2O3 3wt％，以氮化硅研磨球为磨介，以汽油为混合介质在卧式球磨机中搅拌40小时形成料浆，料浆中的固相重量为料浆重量的40％；将料浆进行真空干燥并混合配好的胶得到造粒粉，该胶由粘结剂和无水乙醇组成；将造粒粉倒入轴承模具进行模压成型。
摘要（英）：

The invention discloses a silicon nitride ceramic material for bearings, which comprises the raw materials: 25-45wt% of alpha-sialon phase, and 10-15 wt% of beta-Si3N4 phase, and is added with 5wt% ofAl2O3 with a purity of 99.99% and an average particle size of 1 micrometer; 5wt% of Y2O3 with a purity of 99.99% and an average particle size of 0.8 micrometer; 1.5wt% of Sm2O3 with a purity of 99.99% and an average particle size of 0.8 micrometer; and 3wt% of Ce2O3 with a purity of 99.99% and an average particle size of 0.8 micrometer, a silicon nitride grinding ball is used as a grinding medium, gasoline is used as a mixed medium, the mixture is stirred for 40 hours in a horizontal ball mill to form slurry, and the weight of the solid phase in the slurry is 40% of the weight of the slurry;vacuum drying is carried out on the slurry and the slurry is mixed with prepared glue to obtain granulation powder, wherein the glue is composed of binder and absolute ethyl alcohol; the granulation powder is poured into a bearing die to be molded and formed.

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