Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of zinc oxide resistor disc with low voltage ratio and high through-current capability
The invention relates to the technical field of resistor discs for lightning arresters, and discloses a preparation method of a zinc oxide resistor disc with low voltage ratio and high through-current capability, and the zinc oxide resistor disc is prepared by sintering the following raw materials by weight: 2-4% of Bi2O3; 2%-4% of Sb2O3; 1.5% to 2.5% of Co2O3; mn < 3 > O < 4 >: 0.50%-0.80%; 0.3% to 0.7% of Cr2O3; 0.30% to 0.70% of NiO; 0.5% to 0.8% of SiO2; 0.06% to 0.15% of MgO; 0.05% to 0.1% of La2O3; 0.02% to 0.06% of Al (NO3) 3.9 H2O; 0.10% to 0.20% of silver glass powder; and the content of ZnO is 86.0%-90.0%. MgO and rare earth La2O3 are introduced into the formula, so that the grain size of the ZnO resistor disc is more uniform, and the through-current capability is greatly improved. Magnesium oxide can form a stable spinel solid solution at the grain boundary of ZnO, La2O3 serves as a rare earth metal oxide, the ion radius of La2O3 is larger than that of Zn < 2 + >, La < 3 + > mainly stays at the grain boundary of ZnO, and the pinning effect is achieved. And by adjusting the addition ratio, the uniformity of the resistor disc structure is improved, and the through-current capability is improved.
本发明涉及避雷器用电阻片技术领域，且公开了一种低压比高通流能力氧化锌电阻片的制备方法，所述氧化锌电阻片由以下重量比的原料烧结而成：Bi2O3：2％‑4％；Sb2O3：2％‑4％；Co2O3：1.5％‑2.5％；Mn3O4：0.50％‑0.80％；Cr2O3：0.3％‑0.7％；NiO：0.30％‑0.70％；SiO2：0.5％‑0.8％；MgO：0.06％‑0.15％；La2O3：0.05％‑0.1％；Al(NO3)3·9H2O：0.02％‑0.06％；银玻璃粉：0.10％‑0.20％；ZnO：86.0％‑90.0％。配方中引进MgO以及稀土La2O3成分，使ZnO电阻片晶粒尺寸更加均匀，大幅度提高了通流能力。氧化镁可在ZnO晶粒边界可形成稳定的尖晶石固溶体，La2O3作为一种稀土金属氧化物，其离子半径大于Zn2+，La3+主要停留在ZnO晶界处，起“钉扎效应”的作用。通过调节添加配比，改善电阻片结构均匀性，提高通流能力的作用。
Preparation method of zinc oxide resistor disc with low voltage ratio and high through-current capability
The invention relates to the technical field of resistor discs for lightning arresters, and discloses a preparation method of a zinc oxide resistor disc with low voltage ratio and high through-current capability, and the zinc oxide resistor disc is prepared by sintering the following raw materials by weight: 2-4% of Bi2O3; 2%-4% of Sb2O3; 1.5% to 2.5% of Co2O3; mn < 3 > O < 4 >: 0.50%-0.80%; 0.3% to 0.7% of Cr2O3; 0.30% to 0.70% of NiO; 0.5% to 0.8% of SiO2; 0.06% to 0.15% of MgO; 0.05% to 0.1% of La2O3; 0.02% to 0.06% of Al (NO3) 3.9 H2O; 0.10% to 0.20% of silver glass powder; and the content of ZnO is 86.0%-90.0%. MgO and rare earth La2O3 are introduced into the formula, so that the grain size of the ZnO resistor disc is more uniform, and the through-current capability is greatly improved. Magnesium oxide can form a stable spinel solid solution at the grain boundary of ZnO, La2O3 serves as a rare earth metal oxide, the ion radius of La2O3 is larger than that of Zn < 2 + >, La < 3 + > mainly stays at the grain boundary of ZnO, and the pinning effect is achieved. And by adjusting the addition ratio, the uniformity of the resistor disc structure is improved, and the through-current capability is improved.
本发明涉及避雷器用电阻片技术领域，且公开了一种低压比高通流能力氧化锌电阻片的制备方法，所述氧化锌电阻片由以下重量比的原料烧结而成：Bi2O3：2％‑4％；Sb2O3：2％‑4％；Co2O3：1.5％‑2.5％；Mn3O4：0.50％‑0.80％；Cr2O3：0.3％‑0.7％；NiO：0.30％‑0.70％；SiO2：0.5％‑0.8％；MgO：0.06％‑0.15％；La2O3：0.05％‑0.1％；Al(NO3)3·9H2O：0.02％‑0.06％；银玻璃粉：0.10％‑0.20％；ZnO：86.0％‑90.0％。配方中引进MgO以及稀土La2O3成分，使ZnO电阻片晶粒尺寸更加均匀，大幅度提高了通流能力。氧化镁可在ZnO晶粒边界可形成稳定的尖晶石固溶体，La2O3作为一种稀土金属氧化物，其离子半径大于Zn2+，La3+主要停留在ZnO晶界处，起“钉扎效应”的作用。通过调节添加配比，改善电阻片结构均匀性，提高通流能力的作用。
Preparation method of zinc oxide resistor disc with low voltage ratio and high through-current capability
一种低压比高通流能力氧化锌电阻片的制备方法
TU YUANSHENG (Autor:in) / WONG YEUNG (Autor:in) / ZHU YUNFEI (Autor:in) / GUIYANG YANGHAI (Autor:in) / SHI TIANJUN (Autor:in) / HUANG HAI (Autor:in)
23.05.2023
Patent
Elektronische Ressource
Chinesisch
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