The present disclosure relates to an abrasive coating forming a seal material on components of gas turbine engines and a process for forming the abrasive coating. The abrasive coating may be applied to a structure in proximity to at least one section of the gas turbine engine having a plurality of airfoils. The abrasive coating in a first mode of operation of the gas turbine engine is capable of causing wearing of tips of the airfoils that come into contact with the abrasive coating and in a second mode of operation of the gas turbine engine has an interparticle strength sufficient to allow for fracture of the abrasive coating.