A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
High-strength composite ceramic based on high-temperature thermal expansion coefficient matching
The invention relates to the technical field of special ceramic composite materials, in particular to a high-strength composite ceramic based on high-temperature thermal expansion coefficient matching. The composite ceramic is composed of a phase A and a phase W, the phase A is alpha-Al2O3, the chemical formula of the phase W is (W1-xMex) C, and x is larger than or equal to 0.05 and smaller than or equal to 0.2; and Me is Ti or Zr. The W phase is matched with the A phase in thermal expansion coefficient at high temperature, and the difference value delta of the thermal expansion coefficient of the W phase and the thermal expansion coefficient of the A phase is always kept within +/-10% within the range of 600-1600 DEG C. The method is simple in process and easy for large-scale industrial preparation. The composite ceramic prepared by the method has high room-temperature strength and high-temperature strength retention rate; the method is suitable for application under high-temperature, high-pressure and other extreme conditions, such as a numerical control cutter for processing high-temperature alloy.
本发明涉及特种陶瓷复合材料技术领域，特别是涉及一种基于高温热膨胀系数匹配的高强度复合陶瓷。该复合陶瓷由两种陶瓷相A相和W相构成，其中A相为α‑Al2O3，W相的化学式为(W1‑xMex)C，其中0.05≤x≤0.2；Me为Ti或Zr。W相为与A相在高温下热膨胀系数匹配的相，在600℃至1600℃范围内，W相的热膨胀系数与A相的热膨胀系数差值Δ始终保持在±10％以内。本发明工艺简单，易于大规模工业化制备。利用本发明方法制备的复合陶瓷具有高的室温强度和高温强度保持率；适用于高温、高压及其他极端条件下的应用，如加工高温合金的数控刀具。
High-strength composite ceramic based on high-temperature thermal expansion coefficient matching
The invention relates to the technical field of special ceramic composite materials, in particular to a high-strength composite ceramic based on high-temperature thermal expansion coefficient matching. The composite ceramic is composed of a phase A and a phase W, the phase A is alpha-Al2O3, the chemical formula of the phase W is (W1-xMex) C, and x is larger than or equal to 0.05 and smaller than or equal to 0.2; and Me is Ti or Zr. The W phase is matched with the A phase in thermal expansion coefficient at high temperature, and the difference value delta of the thermal expansion coefficient of the W phase and the thermal expansion coefficient of the A phase is always kept within +/-10% within the range of 600-1600 DEG C. The method is simple in process and easy for large-scale industrial preparation. The composite ceramic prepared by the method has high room-temperature strength and high-temperature strength retention rate; the method is suitable for application under high-temperature, high-pressure and other extreme conditions, such as a numerical control cutter for processing high-temperature alloy.
本发明涉及特种陶瓷复合材料技术领域，特别是涉及一种基于高温热膨胀系数匹配的高强度复合陶瓷。该复合陶瓷由两种陶瓷相A相和W相构成，其中A相为α‑Al2O3，W相的化学式为(W1‑xMex)C，其中0.05≤x≤0.2；Me为Ti或Zr。W相为与A相在高温下热膨胀系数匹配的相，在600℃至1600℃范围内，W相的热膨胀系数与A相的热膨胀系数差值Δ始终保持在±10％以内。本发明工艺简单，易于大规模工业化制备。利用本发明方法制备的复合陶瓷具有高的室温强度和高温强度保持率；适用于高温、高压及其他极端条件下的应用，如加工高温合金的数控刀具。
High-strength composite ceramic based on high-temperature thermal expansion coefficient matching
一种基于高温热膨胀系数匹配的高强度复合陶瓷
ZHANG HANCHAO (author) / WANG SHIYANG (author) / WANG BO (author)
2024-08-02
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2024
Fabrication of a Ceramic Composite with Low Thermal Expansion and High Strength
| British Library Online Contents | 1999
High-entropy ceramic material with high thermal expansion coefficient and preparation method
| European Patent Office | 2024
High-strength low-expansion-coefficient glass fiber and composite material
| European Patent Office | 2022
| British Library Online Contents | 2007