Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of high-gradient zinc oxide varistor
The invention discloses a preparation method of a high-gradient zinc oxide piezoresistor disc, and belongs to the technical field of electrical material preparation. The method comprises the following steps: (1) carrying out hydrothermal reaction on Y2O3 and a surfactant aqueous solution at 160-180 DEG C to obtain g-Y2O3; (2) preparing first powder, wherein the first powder comprises ZnO, Bi2O3, Sb2O3, Co2O3, MnCO3, NiO, Y2O3 and Ag-glass, and the first powder comprises ZnO, Bi2O3, Sb2O3, Co2O3, MnCO3, NiO, Y2O3 and Ag-glass; (3) mixing the first powder, deionized water, an organic matter aqueous dispersion and a dispersing agent, performing ball milling, granulating ball-milled slurry, and sieving with a 100-mesh sieve to obtain third powder; (4) pressing the third powder into a cylindrical sample; and (5) carrying out high-temperature calcination on the cylindrical sample. According to the method, new spinel is generated by rare earth oxide, Zn, Bi and the like during high-temperature sintering, and the growth speed of ZnO crystal grains is reduced due to the pinning effect of the spinel, so that the size of the crystal grains of the piezoresistor is reduced, and the potential gradient is improved.
本发明公开了一种高梯度氧化锌压敏电阻片的制备方法，属于电工材料制备技术领域。该方法包括：(1)将Y2O3与表面活性剂水溶液于160‑180℃水热反应得g‑Y2O3；(2)准备第一粉体，包括ZnO、Bi2O3、Sb2O3、Co2O3、MnCO3、NiO、Y2O3和Ag‑glass；(3)将第一粉体和去离子水、有机物水分散液及分散剂混合后球磨，球磨浆料造粒后过100目筛网，得第三粉体；(4)将第三粉体压制成圆柱状样品；(5)圆柱状样品高温煅烧。该方法在高温烧结时稀土氧化物与Zn、Bi等生成新的尖晶石，由于尖晶石的钉扎效应而降低ZnO晶粒的生长速度，导致压敏电阻晶粒尺寸减小，使得电位梯度得以提高。
Preparation method of high-gradient zinc oxide varistor
The invention discloses a preparation method of a high-gradient zinc oxide piezoresistor disc, and belongs to the technical field of electrical material preparation. The method comprises the following steps: (1) carrying out hydrothermal reaction on Y2O3 and a surfactant aqueous solution at 160-180 DEG C to obtain g-Y2O3; (2) preparing first powder, wherein the first powder comprises ZnO, Bi2O3, Sb2O3, Co2O3, MnCO3, NiO, Y2O3 and Ag-glass, and the first powder comprises ZnO, Bi2O3, Sb2O3, Co2O3, MnCO3, NiO, Y2O3 and Ag-glass; (3) mixing the first powder, deionized water, an organic matter aqueous dispersion and a dispersing agent, performing ball milling, granulating ball-milled slurry, and sieving with a 100-mesh sieve to obtain third powder; (4) pressing the third powder into a cylindrical sample; and (5) carrying out high-temperature calcination on the cylindrical sample. According to the method, new spinel is generated by rare earth oxide, Zn, Bi and the like during high-temperature sintering, and the growth speed of ZnO crystal grains is reduced due to the pinning effect of the spinel, so that the size of the crystal grains of the piezoresistor is reduced, and the potential gradient is improved.
本发明公开了一种高梯度氧化锌压敏电阻片的制备方法，属于电工材料制备技术领域。该方法包括：(1)将Y2O3与表面活性剂水溶液于160‑180℃水热反应得g‑Y2O3；(2)准备第一粉体，包括ZnO、Bi2O3、Sb2O3、Co2O3、MnCO3、NiO、Y2O3和Ag‑glass；(3)将第一粉体和去离子水、有机物水分散液及分散剂混合后球磨，球磨浆料造粒后过100目筛网，得第三粉体；(4)将第三粉体压制成圆柱状样品；(5)圆柱状样品高温煅烧。该方法在高温烧结时稀土氧化物与Zn、Bi等生成新的尖晶石，由于尖晶石的钉扎效应而降低ZnO晶粒的生长速度，导致压敏电阻晶粒尺寸减小，使得电位梯度得以提高。
Preparation method of high-gradient zinc oxide varistor
一种高梯度氧化锌压敏电阻片的制备方法
DONG JIANHONG (Autor:in) / CHEN WEI (Autor:in)
20.10.2023
Patent
Elektronische Ressource
Chinesisch
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