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Heat-resistant ceramic and production process thereof
The invention discloses heat-resistant ceramic and a production process thereof, and belongs to the technical field of heat-resistant ceramic production, and the heat-resistant ceramic comprises the following raw materials in parts by mass: 32-45 parts of aluminum oxide, 28-35 parts of titanium oxide, 22-25 parts of quartz, 17-25 parts of modified mullite and 2-5 parts of magnesium oxide. Wherein the modified mullite is prepared by the following steps: mixing and stirring silica sol and aluminum sol, heating in a water bath for 2 hours, adding ammonia water, and stirring for 4 hours to obtain mullite gel; and adding modified fibers into the mullite gel, completely dipping, standing at 50-80 DEG C for 12-24 hours, and drying to obtain the modified mullite. The finally prepared heat-resistant ceramic has excellent thermal expansion performance (the thermal expansion coefficient is smaller than or equal to 1.3 * 10 <-6 >/DEG C) and mechanical strength (the breaking strength is larger than or equal to 110 MPa), and the mechanical performance of the heat-resistant ceramic with aluminum titanate as a matrix is remarkably improved.
本发明公开了一种耐热陶瓷及其生产工艺，属于耐热陶瓷生产技术领域，耐热陶瓷，包括以下质量份原料：氧化铝32‑45份、氧化钛28‑35份、石英22‑25份、改性莫来石17‑25份、氧化镁2‑5份。其中，改性莫来石由以下步骤制备：将硅溶胶和铝溶胶混合搅拌，水浴加热2h，向中加入氨水，搅拌4h后，得到莫来石凝胶；向莫来石凝胶中加入改性纤维，浸渍完全后，50‑80℃条件下放置12‑24h，烘干后得到改性莫来石。最终制备的耐热陶瓷兼具优异的热膨胀性能(热膨胀系数≤1.3×10‑6/℃)和机械强度(抗折强度≥110MPa)，显著提高了以钛酸铝为基体的耐热陶瓷的机械性能。
Heat-resistant ceramic and production process thereof
The invention discloses heat-resistant ceramic and a production process thereof, and belongs to the technical field of heat-resistant ceramic production, and the heat-resistant ceramic comprises the following raw materials in parts by mass: 32-45 parts of aluminum oxide, 28-35 parts of titanium oxide, 22-25 parts of quartz, 17-25 parts of modified mullite and 2-5 parts of magnesium oxide. Wherein the modified mullite is prepared by the following steps: mixing and stirring silica sol and aluminum sol, heating in a water bath for 2 hours, adding ammonia water, and stirring for 4 hours to obtain mullite gel; and adding modified fibers into the mullite gel, completely dipping, standing at 50-80 DEG C for 12-24 hours, and drying to obtain the modified mullite. The finally prepared heat-resistant ceramic has excellent thermal expansion performance (the thermal expansion coefficient is smaller than or equal to 1.3 * 10 <-6 >/DEG C) and mechanical strength (the breaking strength is larger than or equal to 110 MPa), and the mechanical performance of the heat-resistant ceramic with aluminum titanate as a matrix is remarkably improved.
本发明公开了一种耐热陶瓷及其生产工艺，属于耐热陶瓷生产技术领域，耐热陶瓷，包括以下质量份原料：氧化铝32‑45份、氧化钛28‑35份、石英22‑25份、改性莫来石17‑25份、氧化镁2‑5份。其中，改性莫来石由以下步骤制备：将硅溶胶和铝溶胶混合搅拌，水浴加热2h，向中加入氨水，搅拌4h后，得到莫来石凝胶；向莫来石凝胶中加入改性纤维，浸渍完全后，50‑80℃条件下放置12‑24h，烘干后得到改性莫来石。最终制备的耐热陶瓷兼具优异的热膨胀性能(热膨胀系数≤1.3×10‑6/℃)和机械强度(抗折强度≥110MPa)，显著提高了以钛酸铝为基体的耐热陶瓷的机械性能。
Heat-resistant ceramic and production process thereof
一种耐热陶瓷及其生产工艺
CAO SHULONG (author) / HUANG BINGFENG (author) / ZHANG XIA (author)
2024-01-05
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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