High wear resistance of zirconia ceramics

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The high wear resistance of zirconia ceramics is attributed to their unique stress-induced phase transformation toughening mechanism and extremely high material density. This advanced ceramic, mainly composed of zirconia (ZrO ₂), has a Vickers hardness (HV) of over 1250 and a bending strength exceeding 1200MPa. Its wear rate is only 1/50 of high-quality tool steel. Under harsh working conditions such as lack of lubrication, high load or containing hard particles, zirconia ceramics can absorb impact energy through “phase transformation toughening”, effectively resist abrasive wear and fatigue wear, and become an ideal choice for solving the problem of “easy wear and frequent replacement” in modern industry.

Product FAQ
Q: During high-speed mechanical operation, my metal sealing ring or shaft sleeve always wears out and fails within a few months, causing frequent equipment shutdowns. What should I do?
Answer: Our zirconia ceramic sealing ring and shaft sleeve have a hardness of HRA87-90, a low friction coefficient, and can be polished to a surface roughness of Ra0.02 μ m or less through mirror polishing, which can significantly reduce the wear of the mating surface and extend the service life of the components by 5-10 times.
Q: In grinding, polishing or chemical production, equipment lining and components not only need to be wear-resistant, but also corrosion-resistant. Metal parts often cannot balance the two. How to solve this problem?
Answer: Zirconia ceramics not only have ultra-high wear resistance, but also have almost inert chemical stability, which can withstand corrosion from strong acids, strong bases, and various organic solvents. Using zirconia lining or grinding medium can ensure the purity of the material and prevent metal contamination.
Q: In automated welding production lines, positioning pins need to withstand the impact of welding slag splashing and prevent adhesion with workpieces. The service life of metal positioning pins is too short and the cost is high. What should be done?
Answer: Welding locating pins made of high toughness zirconia (such as Y-TZP or ATZ) are not only resistant to high temperatures (>1000 ℃) and do not soften, but also have non-conductive ceramic surfaces and do not adhere to welding slag. Its lifespan can reach dozens of times that of tool steel, and the comprehensive maintenance cost can be reduced by more than 70%.

Core advantages of the product

1. Ultimate mechanical performance
   Zirconia ceramics not only have an elastic modulus of up to 210 GPa, but their fracture toughness is also 2-3 times that of ordinary alumina ceramics (up to 8-15 MPa · m ¹/²). This “combination of rigidity and flexibility” characteristic prevents brittle fracture when subjected to impact or point contact loads, making it particularly suitable for dynamic load-bearing components such as precision bearings and valve ball seats.
2. Comprehensive customized services
   We are well aware that wear-resistant components are often the core “organs” of equipment, so we offer the ability to customize full-size chains:
   -Specification and size: Supports customization from small fiber optic pins (diameter<1mm) to large wear-resistant fittings (length>500mm), with thickness and tolerances that can be processed according to the drawing.
   -Molding process: Depending on the complexity of the product, dry pressing, isostatic pressing, hot die casting, or injection molding can be used to ensure uniform density of the blank and reduce subsequent processing volume through near net size molding.
   -Precision machining: Equipped with diamond grinding and laser processing equipment, it can ensure that the inner hole/outer diameter tolerance is controlled within ± 0.005mm.

Product application areas
-Automotive and mechanical manufacturing: used for water pump sealing rings, engine tappets, bearing balls, high-pressure plunger pump cores, to solve heating and wear problems at high speeds.
-Energy and Chemical Industry: As a ball valve sealing seat, wear-resistant pipeline lining, and cyclone nozzle, it can cope with the erosion of high hardness particle flows such as slurry and coal powder.
-Precision manufacturing: used for fiber optic pin sleeves, wire drawing molds, and electronic component packaging molds, utilizing its non stick powder and high smoothness characteristics to ensure processing accuracy.
-Medical and Consumer Electronics: Applied to artificial hip joints, dental implants, and watch cases and straps, it leverages its biocompatibility and timeless durability.

Customer Application Cases
Case: A well-known automotive parts manufacturer (anonymous)
-Project requirement: The core component of the high-pressure fuel pump produced by the enterprise, the “plunger coupling”, works for a long time in a non lubricated, high-frequency reciprocating motion state. The original bearing steel material showed obvious roughness and wear on the surface after 500 hours of operation, resulting in a decrease in pump pressure and an increase in return oil volume, seriously affecting the fuel efficiency and emission standards of the engine.
-Solution: We have collaborated with our R&D team to develop a customized high-density Y-TZP zirconia ceramic plunger. For its high-pressure working environment, we optimized the grain size of zirconia (controlled below 0.5 μ m) and adopted a special polishing process to achieve a surface roughness of Ra 0.01 μ m on the plunger, while controlling the fit clearance at the micrometer level.
-Final effect: After endurance testing on the test bench, the fuel pump equipped with zirconia plunger maintained a mirror like luster on the plunger surface after 2000 hours of continuous operation, without any signs of wear, and the volumetric efficiency remained above 97%. At present, this solution has been applied in the high-pressure common rail pump of its National 6B standard, completely solving the recall risk caused by wear and tear.

If you are looking for a solution that can cope with extreme wear conditions, please provide us with your drawings or application scenario descriptions. We will customize zirconia ceramic wear-resistant parts for you, providing full support from sample trial production to bulk supply.

Brudeze Ceramics supplies and sells a wide range of high-quality quartz glass, including alumina ceramics, zirconia ceramics, silicon nitride ceramics, aluminum nitride ceramics, silicon carbide ceramics, boron carbide ceramics, bioceramics, machinable ceramics, etc. We can meet the customization requirements of various ceramic products.