Abstract
Silicon powder compacts formed by slip casting were reaction-sintered at various heating rates in a mixed nitrogen-hydrogen atmosphere containing 0 to 80vol% hydrogen. The rate of gas consumption measured in the temperature from 1050° to 1400°C gave two peaks. With increasing hydrogen content the nitriding fraction increased a maximum value at 40vol% hydrogen. The hydrogen content also influenced the bending-rupture strength of sintered bodies, and the maximum bending rupture strength was obtained at about 25vol% hydrogen. The nitridation was almost independent of the heating rate.
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