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High-hardness high-strength low-temperature sintered nickel niobate ceramic material
The invention discloses a high-hardness high-strength low-temperature sintered nickel niobate ceramic material which is composed of nickel niobate and metal oxide and has a general formula (NiNb2O6) (RaOb) y, wherein RaOb represents one or more of Ta2O5, Al2O3, MgO, ZrO2, HfO2 or rare earth oxide, and the rare earth oxide is an oxide of Sc, Y, La, Pr, Nd, Pm, Sm, Eu, Gd, Tm, Dy, Ho, Er, Yb or Lu; and y represents the mass percent of RaOb in the nickel niobate ceramic material, and y is greater than or equal to 0.1 and less than or equal to 0.7. The preparation method of the ceramic material comprises the steps of grinding and mixing nickel niobate powder NiNb2O6 and metal oxide particles or powder in a grinding machine, sieving after grinding is finished, and carrying out spark plasma sintering on the obtained powder in a mold. Compared with the nickel niobate ceramic prepared by a traditional high-temperature solid-phase method, the nickel niobate ceramic provided by the invention has higher density, hardness and strength, and meanwhile, different types of oxides with different mass fractions can be added according to needs so as to regulate and control the thermophysical properties of the nickel niobate ceramic.
本发明公开了一种高硬度高强度的低温烧结铌酸镍陶瓷材料，该陶瓷材料是由铌酸镍、金属氧化物组成，具有通式（NiNb2O6）（RaOb）y，其中，RaOb表示Ta2O5、Al2O3、MgO、ZrO2、HfO2或稀土氧化物中的一种或几种，所述稀土氧化物为Sc，Y，La，Pr，Nd，Pm，Sm，Eu，Gd，Tm，Dy，Ho，Er，Yb或Lu的氧化物；y表示RaOb占铌酸镍陶瓷材料的质量百分比，且0.1≤y≤0.7。所述陶瓷材料的制备方法将是铌酸镍粉末NiNb2O6和金属氧化物颗粒或粉末置于研磨机中进行研磨混合，研磨结束后过筛，得到的粉末置于模具中进行放电等离子烧结即得。本发明提供的铌酸镍陶瓷相比传统高温固相法制备具有更高致密度、硬度和强度，同时可以根据需要加入不同类型、不同质量分数的氧化物从而对铌酸镍陶瓷的热物理性能进行调控。
High-hardness high-strength low-temperature sintered nickel niobate ceramic material
The invention discloses a high-hardness high-strength low-temperature sintered nickel niobate ceramic material which is composed of nickel niobate and metal oxide and has a general formula (NiNb2O6) (RaOb) y, wherein RaOb represents one or more of Ta2O5, Al2O3, MgO, ZrO2, HfO2 or rare earth oxide, and the rare earth oxide is an oxide of Sc, Y, La, Pr, Nd, Pm, Sm, Eu, Gd, Tm, Dy, Ho, Er, Yb or Lu; and y represents the mass percent of RaOb in the nickel niobate ceramic material, and y is greater than or equal to 0.1 and less than or equal to 0.7. The preparation method of the ceramic material comprises the steps of grinding and mixing nickel niobate powder NiNb2O6 and metal oxide particles or powder in a grinding machine, sieving after grinding is finished, and carrying out spark plasma sintering on the obtained powder in a mold. Compared with the nickel niobate ceramic prepared by a traditional high-temperature solid-phase method, the nickel niobate ceramic provided by the invention has higher density, hardness and strength, and meanwhile, different types of oxides with different mass fractions can be added according to needs so as to regulate and control the thermophysical properties of the nickel niobate ceramic.
本发明公开了一种高硬度高强度的低温烧结铌酸镍陶瓷材料，该陶瓷材料是由铌酸镍、金属氧化物组成，具有通式（NiNb2O6）（RaOb）y，其中，RaOb表示Ta2O5、Al2O3、MgO、ZrO2、HfO2或稀土氧化物中的一种或几种，所述稀土氧化物为Sc，Y，La，Pr，Nd，Pm，Sm，Eu，Gd，Tm，Dy，Ho，Er，Yb或Lu的氧化物；y表示RaOb占铌酸镍陶瓷材料的质量百分比，且0.1≤y≤0.7。所述陶瓷材料的制备方法将是铌酸镍粉末NiNb2O6和金属氧化物颗粒或粉末置于研磨机中进行研磨混合，研磨结束后过筛，得到的粉末置于模具中进行放电等离子烧结即得。本发明提供的铌酸镍陶瓷相比传统高温固相法制备具有更高致密度、硬度和强度，同时可以根据需要加入不同类型、不同质量分数的氧化物从而对铌酸镍陶瓷的热物理性能进行调控。
High-hardness high-strength low-temperature sintered nickel niobate ceramic material
一种高硬度高强度的低温烧结铌酸镍陶瓷材料
FENG JING (author) / CHEN LIN (author) / WANG JIANKUN (author) / ZHANG LUYANG (author) / LUO KEREN (author) / RONG JU (author) / WANG GANG (author) / ZHAO SHIXIAN (author) / LIANG PENGPENG (author) / LI HONGXIA (author)
2022-02-11
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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