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High-temperature bending-resistant silicon nitride combined silicon carbide refractory slab and preparation method thereof
The invention relates to the technical field of ceramic firing, and in particular, relates to a high-temperature bending-resistant silicon nitride combined silicon carbide refractory slab and a preparation method thereof; by adding silicon nitride, the porosity of the refractory slab can be effectively reduced, and the high-temperature bending strength of the refractory slab is improved; deformation of a blank in the sintering process is small; the friction resistance between the blank and a mold during compression molding is effectively reduced; the high-temperature bending-resistant siliconnitride combined silicon carbide refractory slab is composed of the following raw materials in percentage by mass: 65 to 75 percent of silicon carbide powder, 10 to 20 percent of silicon nitride powder, 5 to 10 percent of iron-removing waste mortar, 5 to 10 percent of rare earth oxide and 2 to 5 percent of kaolinite clay.
本发明涉及陶瓷烧制技术领域，特别是涉及一种高温抗折型氮化硅结合碳化硅棚板及其制备方法，通过添加氮化硅，可有效的减小棚板的气孔率，提高棚板的高温抗折强度；坯料在烧结过程中出现的变形较小；有效的减小模压成型时坯料与模具之间的摩擦阻力；高温抗折型氮化硅结合碳化硅棚板由以下质量百分比的原料组成：碳化硅粉65％‑75％、氮化硅粉10％‑20％、除铁废砂浆5％‑10％、稀土氧化物5％‑10％和高岭黏土2％‑5％。
High-temperature bending-resistant silicon nitride combined silicon carbide refractory slab and preparation method thereof
The invention relates to the technical field of ceramic firing, and in particular, relates to a high-temperature bending-resistant silicon nitride combined silicon carbide refractory slab and a preparation method thereof; by adding silicon nitride, the porosity of the refractory slab can be effectively reduced, and the high-temperature bending strength of the refractory slab is improved; deformation of a blank in the sintering process is small; the friction resistance between the blank and a mold during compression molding is effectively reduced; the high-temperature bending-resistant siliconnitride combined silicon carbide refractory slab is composed of the following raw materials in percentage by mass: 65 to 75 percent of silicon carbide powder, 10 to 20 percent of silicon nitride powder, 5 to 10 percent of iron-removing waste mortar, 5 to 10 percent of rare earth oxide and 2 to 5 percent of kaolinite clay.
本发明涉及陶瓷烧制技术领域，特别是涉及一种高温抗折型氮化硅结合碳化硅棚板及其制备方法，通过添加氮化硅，可有效的减小棚板的气孔率，提高棚板的高温抗折强度；坯料在烧结过程中出现的变形较小；有效的减小模压成型时坯料与模具之间的摩擦阻力；高温抗折型氮化硅结合碳化硅棚板由以下质量百分比的原料组成：碳化硅粉65％‑75％、氮化硅粉10％‑20％、除铁废砂浆5％‑10％、稀土氧化物5％‑10％和高岭黏土2％‑5％。
High-temperature bending-resistant silicon nitride combined silicon carbide refractory slab and preparation method thereof
一种高温抗折型氮化硅结合碳化硅棚板及其制备方法
YU ZHUOZHONG (author)
2020-11-06
Patent
Electronic Resource
Chinese
Silicon nitride combined silicon carbide refractory material and preparation method thereof
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