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High-temperature-resistant silicon-based ceramic core as well as preparation method and application thereof
The invention provides a high-temperature-resistant silicon-based ceramic core as well as a preparation method and application thereof, and belongs to the technical field of ceramic materials. According to the invention, the particle sizes of 75 microns, 45 microns and 25 microns are graded, the particle size is controlled to be 100 microns or below, and the sintering shrinkage rate of the ceramic core can be reduced and the high-temperature strength can be improved by adopting a relatively large particle size ratio; the high-temperature strength is improved by adding the zirconium silicate powder and the corundum powder, and the high-temperature strength can be further improved by utilizing the particle size grading of the quartz glass powder; the fluidity of the ceramic slurry is controlled by using the quartz glass powder grading and the plasticizer of the ceramic slurry, and meanwhile, the quartz powder grading can also control the shrinkage rate, so that the sintering success rate of the ceramic core pressure casting green body is improved. The prepared high-temperature-resistant silicon-based ceramic core is low in sintering shrinkage rate, high in high-temperature strength, good in corrosion property and suitable for more ceramic core inner cavity structures.
本发明提供了一种耐高温硅基陶瓷型芯及其制备方法和应用，属于陶瓷材料技术领域。本发明采用粒径75μm、45μm、25μm做级配，粒度控制在100μm以下，通过采用较大粒径配比，能降低陶瓷型芯烧结收缩率，提高高温强度；本发明通过加入硅酸锆粉和刚玉粉先将高温强度提高，再利用石英玻璃粉的粒径级配，能够进一步提高高温强度；本发明利用石英玻璃粉级配和陶瓷浆料的增塑剂来控制陶瓷浆料流动性，同时石英粉级配也能控制收缩率，提高陶瓷型芯压注生坯的烧结成功率。本发明制备得到的耐高温硅基陶瓷型芯烧结收缩率低、高温强度高，溶蚀性好，适用更多陶瓷型芯内腔结构。
High-temperature-resistant silicon-based ceramic core as well as preparation method and application thereof
The invention provides a high-temperature-resistant silicon-based ceramic core as well as a preparation method and application thereof, and belongs to the technical field of ceramic materials. According to the invention, the particle sizes of 75 microns, 45 microns and 25 microns are graded, the particle size is controlled to be 100 microns or below, and the sintering shrinkage rate of the ceramic core can be reduced and the high-temperature strength can be improved by adopting a relatively large particle size ratio; the high-temperature strength is improved by adding the zirconium silicate powder and the corundum powder, and the high-temperature strength can be further improved by utilizing the particle size grading of the quartz glass powder; the fluidity of the ceramic slurry is controlled by using the quartz glass powder grading and the plasticizer of the ceramic slurry, and meanwhile, the quartz powder grading can also control the shrinkage rate, so that the sintering success rate of the ceramic core pressure casting green body is improved. The prepared high-temperature-resistant silicon-based ceramic core is low in sintering shrinkage rate, high in high-temperature strength, good in corrosion property and suitable for more ceramic core inner cavity structures.
本发明提供了一种耐高温硅基陶瓷型芯及其制备方法和应用，属于陶瓷材料技术领域。本发明采用粒径75μm、45μm、25μm做级配，粒度控制在100μm以下，通过采用较大粒径配比，能降低陶瓷型芯烧结收缩率，提高高温强度；本发明通过加入硅酸锆粉和刚玉粉先将高温强度提高，再利用石英玻璃粉的粒径级配，能够进一步提高高温强度；本发明利用石英玻璃粉级配和陶瓷浆料的增塑剂来控制陶瓷浆料流动性，同时石英粉级配也能控制收缩率，提高陶瓷型芯压注生坯的烧结成功率。本发明制备得到的耐高温硅基陶瓷型芯烧结收缩率低、高温强度高，溶蚀性好，适用更多陶瓷型芯内腔结构。
High-temperature-resistant silicon-based ceramic core as well as preparation method and application thereof
一种耐高温硅基陶瓷型芯及其制备方法和应用
ZHANG HENG (author) / ZHANG FANGZHENG (author) / LIU YUAN (author) / ZHANG JIE (author) / PEI YANLING (author) / LI SHUSUO (author) / GONG SHENGKAI (author)
2023-06-23
Patent
Electronic Resource
Chinese
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