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Pressureless sintering hexagonal boron nitride ceramic and preparation method thereof
The invention belongs to the technical field of ceramic materials, and relates to pressureless sintering hexagonal boron nitride ceramic and a preparation method thereof, the chemical general formula of the hexagonal boron nitride ceramic is (1-x) h-BN + xh-BNw, x is more than or equal to 0.1 and less than or equal to 0.8, and h-BNw represents hexagonal boron nitride whiskers; the apparent density rho ap is 1.30 g/cm < 3 > to 2.00 g/cm < 3 >, and the bending strength sigma b is 15 MPa to 20 MPa. The ceramic prepared by the invention is stable and single in phase, and can meet the requirements of h-BN crucibles and high-temperature-resistant plates; in the preparation process, the stoichiometric ratio is accurately controlled, the process is simple, the cost of used equipment is low, and various requirements of preparation of the h-BN ceramic special-shaped part can be met.
本发明属于陶瓷材料技术领域，涉及一种无压烧结六方氮化硼陶瓷及其制备方法，所述六方氮化硼陶瓷的化学通式为：(1‑x)h‑BN+xh‑BNw，其中0.1≤x≤0.8，h‑BNw代表六方氮化硼晶须；表观密度ρap为1.30g/cm3~2.00g/cm3，抗弯强度σb为15MPa~20MPa。本发明制得的陶瓷物相稳定且单一，能够满足h‑BN坩埚、耐高温板材的要求；在制备中化学计量比控制精确，工艺简单，使用设备成本低，能够满足h‑BN陶瓷异形件制备的各方面要求。
Pressureless sintering hexagonal boron nitride ceramic and preparation method thereof
The invention belongs to the technical field of ceramic materials, and relates to pressureless sintering hexagonal boron nitride ceramic and a preparation method thereof, the chemical general formula of the hexagonal boron nitride ceramic is (1-x) h-BN + xh-BNw, x is more than or equal to 0.1 and less than or equal to 0.8, and h-BNw represents hexagonal boron nitride whiskers; the apparent density rho ap is 1.30 g/cm < 3 > to 2.00 g/cm < 3 >, and the bending strength sigma b is 15 MPa to 20 MPa. The ceramic prepared by the invention is stable and single in phase, and can meet the requirements of h-BN crucibles and high-temperature-resistant plates; in the preparation process, the stoichiometric ratio is accurately controlled, the process is simple, the cost of used equipment is low, and various requirements of preparation of the h-BN ceramic special-shaped part can be met.
本发明属于陶瓷材料技术领域，涉及一种无压烧结六方氮化硼陶瓷及其制备方法，所述六方氮化硼陶瓷的化学通式为：(1‑x)h‑BN+xh‑BNw，其中0.1≤x≤0.8，h‑BNw代表六方氮化硼晶须；表观密度ρap为1.30g/cm3~2.00g/cm3，抗弯强度σb为15MPa~20MPa。本发明制得的陶瓷物相稳定且单一，能够满足h‑BN坩埚、耐高温板材的要求；在制备中化学计量比控制精确，工艺简单，使用设备成本低，能够满足h‑BN陶瓷异形件制备的各方面要求。
Pressureless sintering hexagonal boron nitride ceramic and preparation method thereof
一种无压烧结六方氮化硼陶瓷及其制备方法
HOU GUANGSHENG (author) / YU YUANLIE (author) / LIN YIBING (author)
2024-11-08
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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