Customized Mirror Polishing Zirconia Part Insulator ZrO2 Ceramic Wheel Block

Performance Characteristics

• High toughness (fracture resistance)

• Mechanism: This is the most prominent feature of zirconia, stemming from its "phase transition toughening" mechanism. Under stress, zirconia grains undergo phase transformation (from tetragonal phase to monoclinic phase), with slight volume expansion, resulting in compressive stress at the crack tip and effectively preventing crack propagation.
• Performance: Its fracture toughness is much higher than traditional alumina ceramics, and even comparable to certain metals, effectively overcoming the weakness of ceramic "brittleness".

• High strength and high hardness

• Performance: Zirconia has very high bending strength and Vickers hardness, which enables it to withstand high loads and resist external forces such as indentation and scratches, with excellent wear resistance.

• Excellent wear resistance

• Performance: Combining high hardness and toughness, zirconia shaped parts exhibit extremely long service life under friction and wear conditions, making them an ideal wear-resistant component material.

• Low thermal conductivity and high temperature stability

• Performance: Zirconia is an excellent insulation material with extremely low thermal conductivity. Meanwhile, it can maintain its strength and shape stability even at high temperatures (usually above 1100℃).

• Excellent chemical stability and biocompatibility

• Performance: Excellent corrosion resistance to most acids, bases, and molten metals. Zirconia (such as Y-TZP) that has undergone strict biosafety certification is non-toxic, non irritating, and non allergenic to human tissues, and is recognized as a biologically inert material.

• Unique coefficient of thermal expansion

• Performance: Its coefficient of thermal expansion is relatively close to that of metals, which makes it have better thermal compatibility when used in conjunction with metal components, reducing stress cracking problems caused by uneven thermal expansion and contraction.

Advantages

• Replacing metal with pottery ": In wear-resistant and corrosion-resistant applications, it can replace high-grade alloy steel, tungsten steel, etc., with a longer lifespan and no need for lubrication, achieving oil-free operation.
• Replacing plastic with pottery ": In situations where high precision, high stability, and chemical corrosion resistance are required, it replaces special engineering plastics with superior performance.
• Replacing aluminum with ceramics ": In the field of biomedicine, replacing traditional alumina ceramics, it has higher strength and toughness, and products can be made thinner and more exquisite.
• Lightweight: Although its density (about 6.0g/cm ³) is higher than aluminum but much lower than steel, it has advantages in high-end equipment that requires weight reduction.
• Performance designability: By adjusting the formula (such as yttrium stabilization, cerium stabilization) and sintering process, its toughness, strength, or thermal conductivity can be optimized in a targeted manner to meet specific application requirements.

Application

• Industrial manufacturing and automation

• Precision bearing balls and rollers: Utilizing their high hardness, wear resistance, corrosion resistance, electrical insulation, and non-magnetic properties, they are used in high-speed spindles, precision instruments, semiconductor equipment, and more.
• Mechanical seal ring: used in chemical pumps, automotive water pumps, etc., it is corrosion-resistant, wear-resistant, and has a lifespan far exceeding that of tungsten carbide and graphite.
• Cutting tools: Zirconia ceramic blades can be used for high-speed precision machining.
• Textile and fiber optic guide: extremely high smoothness and wear resistance, will not wear expensive fiber materials.
• Wear resistant lining plate and shaft sleeve: provide long-term protection under harsh working conditions.

• Medical and Life Sciences (Core Fields)

• Dental restoration: crowns, bridges, implant abutments, etc. It is widely popular due to its high strength and excellent aesthetic effect (color and transparency close to real teeth).
• Surgical instruments: ceramic scissors, blades, bone drills, etc., with high hardness, good biocompatibility, and can be disinfected repeatedly.
• Orthopedic implants: As a substitute material for hip joints, femoral heads, and other joints, their wear resistance is dozens of times higher than that of ultra-high molecular weight polyethylene, which can greatly extend the life of implants.

• Electronics and Semiconductors

• Fiber optic inserts and sleeves require extremely high processing accuracy, low friction coefficient, and long-term dimensional stability, with zirconia being the preferred material.
• Semiconductor process components, such as wafer carrier rings, fixtures, pump liners, etc., are resistant to plasma erosion and have high cleanliness.
• Sensor substrate and housing: protect internal precision components from environmental erosion.

• New energy and automobiles

• Fuel cell separator: Utilizing its ion conductivity and stability in oxidizing/reducing atmospheres, it is the core component of solid oxide fuel cells.
• Automotive sensors, such as oxygen sensors, use their conductivity and stability at high temperatures to detect exhaust oxygen content.

• Consumer Electronics and Daily Necessities

• Appearance components of smart wearable devices, such as smartwatch cases and phone backplates, provide a warm texture, high glossiness, and excellent scratch resistance.
• Cutting tools: ceramic fruit knives, kitchen knives, sharp and durable, rust free, and odorless.

Technical Specifications