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Preparation method of silicon nitride ceramic for orthopedics department
The invention discloses a preparation method of orthopaedic silicon nitride ceramic, raw materials comprise silicon nitride, a sintering aid and a second reinforcement phase, and the method specifically comprises the following steps: mixing the sintering aid and the second reinforcement phase with silicon nitride to obtain mixed powder; mixing the mixed powder with resin to obtain ceramic slurry; and carrying out light curing, low-temperature degreasing and high-temperature sintering on the ceramic slurry to obtain the orthopaedic silicon nitride ceramic. According to the method, a sintering aid containing one or more of Y2O3, MgO, Al2O3, Yb2O3, Nd2O3, Eu2O3, La2O3, Sm2O3 and CeO and a second reinforcing phase are creatively introduced into silicon nitride, a reinforcing body which is reinforced in a point, line and plane three-dimensional manner is formed through a preparation process including light curing, low-temperature degreasing and high-temperature sintering, silicon nitride crystal grains are promoted to be subjected to complete phase change, long-column-shaped beta-Si3N4 is generated, and the high-performance silicon nitride is obtained. And the silicon nitride ceramic with remarkably improved fracture toughness is obtained.
本发明公开了一种骨科氮化硅陶瓷的制备方法，原料包括氮化硅、烧结助剂和第二增强相，所述方法具体包括：将烧结助剂和第二增强相与氮化硅混合，得到混合粉末；将所述混合粉末与树脂混合，得到陶瓷浆料；将所述陶瓷浆料经光固化、低温脱脂和高温烧结，得到骨科氮化硅陶瓷。该方法通过创造性地向氮化硅中引入包含Y2O3、MgO、Al2O3、Yb2O3、Nd2O3、Eu2O3、La2O3、Sm2O3和CeO中的一种或多种的烧结助剂和第二增强相，通过包含光固化、低温脱脂和高温烧结的制备工艺，形成在点、线、面三维度强化的增强体，促使氮化硅晶粒发生完全相变，生成长柱状的β‑Si3N4，获得断裂韧性显著提高的氮化硅陶瓷。
Preparation method of silicon nitride ceramic for orthopedics department
The invention discloses a preparation method of orthopaedic silicon nitride ceramic, raw materials comprise silicon nitride, a sintering aid and a second reinforcement phase, and the method specifically comprises the following steps: mixing the sintering aid and the second reinforcement phase with silicon nitride to obtain mixed powder; mixing the mixed powder with resin to obtain ceramic slurry; and carrying out light curing, low-temperature degreasing and high-temperature sintering on the ceramic slurry to obtain the orthopaedic silicon nitride ceramic. According to the method, a sintering aid containing one or more of Y2O3, MgO, Al2O3, Yb2O3, Nd2O3, Eu2O3, La2O3, Sm2O3 and CeO and a second reinforcing phase are creatively introduced into silicon nitride, a reinforcing body which is reinforced in a point, line and plane three-dimensional manner is formed through a preparation process including light curing, low-temperature degreasing and high-temperature sintering, silicon nitride crystal grains are promoted to be subjected to complete phase change, long-column-shaped beta-Si3N4 is generated, and the high-performance silicon nitride is obtained. And the silicon nitride ceramic with remarkably improved fracture toughness is obtained.
本发明公开了一种骨科氮化硅陶瓷的制备方法，原料包括氮化硅、烧结助剂和第二增强相，所述方法具体包括：将烧结助剂和第二增强相与氮化硅混合，得到混合粉末；将所述混合粉末与树脂混合，得到陶瓷浆料；将所述陶瓷浆料经光固化、低温脱脂和高温烧结，得到骨科氮化硅陶瓷。该方法通过创造性地向氮化硅中引入包含Y2O3、MgO、Al2O3、Yb2O3、Nd2O3、Eu2O3、La2O3、Sm2O3和CeO中的一种或多种的烧结助剂和第二增强相，通过包含光固化、低温脱脂和高温烧结的制备工艺，形成在点、线、面三维度强化的增强体，促使氮化硅晶粒发生完全相变，生成长柱状的β‑Si3N4，获得断裂韧性显著提高的氮化硅陶瓷。
Preparation method of silicon nitride ceramic for orthopedics department
骨科氮化硅陶瓷的制备方法
ZHANG QI (author) / GUO BUYUAN (author) / KANG ZHU (author) / LI BINGQI (author)
2024-08-09
Patent
Electronic Resource
Chinese
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