Dense γ-Y₂Si₂O₇ ceramics were prepared by moulding and sintering of pure γ-Y₂Si₂O₇ powders synthesized by adding various additives. Effects of sintering additives on hot corrosion behavior of γ-Y₂Si₂O₇ ceramics in Na₂SO₄ + V₂O₅ molten salts were systematically investigated. Chemical kinetics of corrosion process was also calculated to illuminate the influence of different additives on chemical stability. Results showed that corrosion reaction started at grain boundary due to the loose microscopic network. When the intercrystalline glass phase was completely etched, the molten salts began to contact Y₂Si₂O₇, forming NaY₉Si₆O₂₆ and YVO₄. Compared with Li₂O and MgO, intercrystalline glass phase formed by Al₂O₃ additive had the most compact microscopic network structure, leading to the best chemical stability. Apparent activation energy for hot corrosion reaction of γ-Y₂Si₂O₇ ceramics in pure Na₂SO₄, Na₂SO₄ + 5 wt% V₂O₅, Na₂SO₄ + 10 wt% V₂O₅, Na₂SO₄ + 15 wt% V₂O₅ molten salts was calculated to be 408.16, 373.60, 310.62, and 249.63 kJ/mol, respectively.

密γ-Y ₂的Si _2个ö ₇陶瓷的通过模制和纯γ-Y的烧结制备₂的Si _2成ö ₇加入各种添加剂合成的粉末。上的热腐蚀行为烧结添加剂的影响γ-Y ₂的Si _2个ö ₇陶瓷中的Na ₂ SO ₄ + V ₂ ø ₅对熔融盐进行了系统的研究。还计算了腐蚀过程的化学动力学，以阐明不同添加剂对化学稳定性的影响。结果表明，由于疏松的微观网络，腐蚀反应开始于晶界。当晶间玻璃相被完全蚀刻时，熔融盐开始接触Y ₂ Si ₂ O ₇，形成NaY ₉ Si ₆ O ₂₆和YVO ₄。与Li ₂ O和MgO相比，Al ₂ O ₃形成的晶间玻璃相添加剂具有最紧凑的微观网络结构，从而具有最佳的化学稳定性。对于γ-Y的热腐蚀反应表观活化能₂的Si _2个ö ₇在纯的Na陶瓷₂ SO ₄，钠₂ SO ₄ + 5重量％的V ₂ ø ₅，钠₂ SO ₄ + 10重量％的V ₂ ø ₅，计算出Na ₂ SO ₄ + 15 wt％V ₂ O ₅熔融盐分别为408.16、373.60、310.62和249.63 kJ / mol。