Corrosion resistant zirconia ceramic for artificial joint ball heads and preparation method thereof
By adding compositions such as kaolin and magnesium oxide to zirconia ceramics to form oligomers, the problem of corrosiveness of zirconia ceramics in the human body is solved, and the high hardness and corrosion resistance of the ceramics are achieved, which is suitable for use under high load conditions. application.
CN106187178AInactive Publication Date: 2016-12-07丁永新
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Patent Information
- Application Number
- CN201610555663.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2015-03-31
- Publication Date
- 2016-12-07
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Technical Problem
Zirconia ceramics are easily corroded in the human body, resulting in insufficient durability and inability to meet application requirements under high load conditions.
Method used
Corrosion-resistant zirconia ceramics are prepared using a combination of zirconia, kaolin, magnesium oxide, sodium dioctyl sulfonate succinate, hydroxyapatite, cross-linking agent and initiator through high-temperature sintering and annealing to form oligomers. Improve the hardness and corrosion resistance of ceramics.
Benefits of technology
The hardness and corrosion resistance of ceramics are significantly improved, and they can remain stable in simulated body fluids, avoid corrosion, and meet application requirements under high load conditions.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention discloses a corrosion resistant zirconia ceramic for artificial joint ball heads and a preparation method thereof. The ceramic comprises the following raw materials in parts by weight: 100 to 120 parts of zirconia, 7 to 8 parts of kaolin, 10 to 15 parts of magnesium oxide, 20 to 30 parts of sodium diethylhexyl sulfosuccinate, 10 to 20 parts of hydroxyapatite, 10 to 20 parts of crosslinking agent, and 5 to 9 parts of initiator. The preparation method comprises the following steps: evenly mixing zirconia, kaolin, magnesium oxide, sodium diethylhexyl sulfosuccinate, hydroxyapatite, a crosslinking agent, and an initiator, placing the mixture in a platinum crucible with a rhodium content of 10 to 12 wt%, sealing the crucible, maintaining a temperature of 1200 to 1300 DEG C, carrying out reactions for 2 to 3 hours, immediately transferring the reaction product to an annealing furnace, carrying out a heat treatment for 4 to 5 hours at a temperature of 200 to 300 DEG C, and slowly cooling the reaction product to the room temperature to obtain the ceramic. According to the preparation method, kaolin, magnesium oxide and zirconia can form an oligomer, the surface of zirconia is wet, through the surface tension, particles come to and fill the air holes, thus the sintering is promoted, and the hardness and corrosion resistant performance of ceramic are both enhanced.
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