Materials Characterization
Application & material guidance
Materials Characterization
Connect chemistry, microstructure and processing conditions to the performance of the finished material.
Particle size and crystalline phase
The Chinese brochure uses particle-size distributions, X-ray diffraction patterns and microscopy to describe alumina powder, mullite slurry and aerogel materials. A secondary-particle D50, a primary particle size and a sintered grain size describe different stages of the material.
Sintering trials
For GZ-NAP-S150, the reported 150 MPa compaction and 1350°C sintering route gives 3.92 g/cm³ density, 16% shrinkage and a 0.5 µm cross-section grain size. For JL-M150, the stated dried-powder route uses 150 MPa and 1100°C, with 2.6 g/cm³ density and 4–5% shrinkage. Record the complete schedule before comparing results.
Sol-to-ceramic conversion
The Chinese sol table distinguishes solids content, ceramic yield, particle size and crystallization temperature. The newer English table uses different grade codes and some inconsistent viscosity units. Select a formulation against an agreed measurement method and current grade sheet.
Thermal barrier measurements
The aerogel flame illustration provides front and rear temperatures at selected times but does not identify a complete test method or specimen thickness. Use it as development context; measure a representative assembly for the proposed application.
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