In this work, a grinding force model has been proposed and a correlation between the analytical model and the experimental grinding forces obtained during finishing of plasma sprayed ceramic coatings has been investigated. Thermally sprayed ceramic coatings have low fracture toughness and develop micro brittle fracture under moderate mechanical loading. In this investigation, grinding of air plasma sprayed alumina, zirconia, and titania coatings were studied theoretically and experimentally. It was observed that the ground surface contained micro-cracks and debris of irregular fragmented chips owing to the micro-brittle fracture. A grinding force model is proposed to incorporate the fracture behavior of the ceramic coating. This was substantiated through experimental values showing low grinding forces.

在这项工作中，提出了一种磨削力模型，并研究了分析模型与等离子喷涂陶瓷涂层精加工过程中获得的实验磨削力之间的相关性。热喷涂陶瓷涂层的断裂韧性低，在中等机械载荷下会产生微脆性断裂。在这项研究中，对空气等离子喷涂的氧化铝，氧化锆和二氧化钛涂层的研磨进行了理论和实验研究。观察到，由于微脆性断裂，地面上包含微裂纹和不规则碎片的碎片。提出了结合陶瓷涂层断裂行为的磨削力模型。通过显示低磨削力的实验值证实了这一点。