ZhuZhou Advanced Ceramic Technology Co., Ltd
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Committed to becoming a leader in global ceramic cutting tool technology
Cemented Carbide
Whisker-toughened ceramic SiCw
Product Details
Silicon Carbide Whisker-Toughened Ceramic Cutting Tools It is a high-performance cutting tool that significantly enhances toughness, impact resistance, and wear resistance by deliberately introducing silicon carbide whiskers (SiCw) into a ceramic matrix (such as alumina Al₂O₃). This material addresses the core shortcomings of conventional ceramic tools—namely, their high brittleness and susceptibility to chipping—and is widely used in extreme machining applications across fields such as aerospace, new energy, and precision manufacturing.
Core Toughening Principle
Crack Deflection and Interception ， Silicon carbide whiskers (SiCw) act like a “micro-reinforcement mesh,” effectively impeding crack propagation and forcing crack paths to bend (with deflection angles exceeding 45°), thereby increasing energy dissipation by more than 50%.
Bridge—Unlocking Synergies
Bridge function: Whiskers span across both sides of the crack, providing mechanical support (contributing 60% to toughness);
Power consumption for extraction: Whisker debonding requires overcoming an interfacial shear stress of ≥200 MPa and additionally absorbing fracture energy.
Thermal expansion matching
The thermal expansion coefficient of silicon carbide whiskers (SiCw)—4.5×10⁻⁶/K—is close to that of the Si₃N₄ matrix (3.2×10⁻⁶/K), resulting in extremely low interfacial stress at high temperatures.
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Grade: CW10 ISO: K10; S10 Features and Applications: Finishing of high-temperature alloys, high-hardness steels, and cast iron with focus on end milling finishing. |
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Grade: CW25 ISO: K25; S25 Features and Applications: High-speed machining of nickel-based/cobalt-based alloys, cast iron, and high-hardness steels in continuous or light interrupted cutting. |
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Address: Room 101, Building A5, Small and Medium Enterprises Promotion Park, Huanghe North Road, Tianyuan District, Zhuzhou City, Hunan Province, China Map Navigation→
Address: Room 101, Building A5, Small and Medium Enterprises Promotion Park, Huanghe North Road, Tianyuan District, Zhuzhou City, Hunan Province, China
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