Study of the interaction between liquid aluminum and silicon nitride

The influence of Y2O3-containing sintering additives on the oxidation of Si3N4-based ceramics and the interfacial interactions with liquid Al-alloys

“…Strong adhesion and continuous interfaces were achieved with no formation of new phases, whose probable brittleness and mismatch of thermal expansion coefficients with the parent materials would result in a failure of interface. [1][2][3][4][5][25][26][27][28][29] In general, this work agrees fairly well with earlier studies, [1][2][3][4][5][6][7][8][24][25][26][27] which have reported that decomposition of Si 3 N 4 -based ceramics by liquid aluminium and its alloys, even under low oxygen partial pressure and high temperature conditions, is very difficult. The presence of alloying elements often influences ceramic/metal interactions.…”

Highly dense Si3N4 crucibles used for Al casting: An investigation of the aluminum–ceramic interface at high temperatures

“…Despite the great interest in using Si 3 N 4 materials, their corrosion resistance has not been studied extensively, particularly under industrial conditions [13][14][15][16][17][18]. In this study, corrosion tests with molten aluminum were carried out in Si 3 crucibles at 900 and 1150 • C, in air.…”

Vacuum heat-treatment of MgO-densified silicon nitride ceramics and their compatibility with molten aluminium and copper

“…Despite the great interest in using Si 3 N 4 materials, their corrosion resistance has not been studied extensively so far, particularly under industrial conditions [6][7][8][9]. The environments were chosen to approach industrial conditions by avoiding an inert atmosphere commonly found in earlier scientific experiments [6][7][8][9].…”