Wetting of ceramic particulates with liquid aluminum alloys: Part I. Experimental techniques
Abstract
An experimental technique for evaluation of wettability of solid particulates with liquid metal was developed. Uniformly packed powder specimens were prepared with a tamping device specially made for the present experiment, and wetting tests were conducted by pressure infiltration of liquid Al-alloys into the powder specimens. The threshold pressure for infiltration was used as a measure of wettability. With this technique, wettabilities were measured for 10 μm diameter SiC and B4C particulates by several Al-based alloys. Threshold pressures obtained from this technique showed reproducibility to approximately ±7 kPa. Microstructures of infiltrated powder specimens indicated planar front infiltration with no disruption of powder compact during infiltration test and virtually no porosity.
- Publication:
-
Metallurgical Transactions A
- Pub Date:
- March 1989
- DOI:
- 10.1007/BF02653932
- Bibcode:
- 1989MTA....20..527O
- Keywords:
-
- Metallurgical Transaction;
- Wettability;
- Void Fraction;
- Immersional Wetting;
- Threshold Pressure