Unlocking the Power of pH: A New Way to Make Strong, Clear Ceramics
Ceramics made from Y2O3 and MgO are known for their ability to withstand extreme conditions and transmit mid-infrared light. However, traditional manufacturing methods often result in flaws such as uneven phases, large grains, and poor distribution.
The Challenge with Traditional Methods
The conventional coprecipitation method fails to produce high-quality ceramics because Y3+ and Mg2+ do not precipitate at the same rate, leading to weak and inconsistent materials.
The Solution: A Hybrid Approach
Scientists developed a novel process combining coprecipitation and solvothermal methods. By precisely controlling the pH (between 9.31 and 11.56), they achieved:
- Faster and more uniform precipitation
- Complete precipitation of Mg2+ at high pH (≥10.84)
- Fine and homogeneous nanopowder
Exceptional Ceramic Properties
When these nanopowders were pressed and sintered, they formed ceramics with:
- Near-perfect phase ratios
- Ultra-fine grains (129 ± 4 nm)
- High homogeneity
These ceramics demonstrated unprecedented optical and mechanical properties:
- Light transmission up to 85% at 6.2 μm and 79% at 7 μm (the highest reported)
- Broad transmission range (1.0–11.5 μm)
- High hardness (11.19 GPa)
- Good toughness (2.43 MPa·m1/2)
A New Era in Material Science
This breakthrough solves a long-standing problem in ceramic manufacturing and opens new avenues for designing advanced materials with superior performance.
