Interaction between Liquid Aluminium and Non-Oxide Ceramics (AlN, Si₃N₄, SiC)

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.…”

Wetting of HIP AlN-TiB2 ceramic composites by liquid metals and alloys

“…2 As a result, wetting of aluminum nitride substrates by copper 3,4 and other metals has been extensively studied. [5][6][7][8] Titanium diboride shows some complementary properties with AlN such as good electrical conductivity, high melting point and chemical inertness. Nowadays, it is used for cathode applications in aluminum production, electrical discharge machining, wear resistant components and cutting tools.…”

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.…”

“…In this study, corrosion tests with molten aluminum were carried out in Si 3 crucibles at 900 and 1150 • C, in air. The environments were chosen to approach industrial conditions by avoiding an inert atmosphere commonly found in earlier scientific experiments [13][14][15][16].…”