To　gain　high　efficiency　and　low　fuel　consumption,　aluminum-based　abradable　seal　coatings　had　been　widely　used　in　the　compressor　casing　of　aero　engines　or　gas　turbines　owing　to　the　low　elastic　modulus.　However,　the　adhesive　transfer　phenomenon　frequently　occurs　when　the　radial　rubbing　generates　between　titanium　alloy　blade　tips　and　aluminum-based　coating.　It　tends　to　increase　scratch　force　and　results　in　blades　vibration　and　even　engine　jam.　To　eliminate　this　problem,　a　new　lightweight　epoxy-based　abradable　seal　coating　with　high　bonding　strength　was　developed　by　an　effective　and　porosity　controllable　mixing　process　that　distributes　spherical　pores　uniformly　in　the　continuous　matrix.　A　lightweight　coating　of　63%　porosity　with　a　hardness　of　33.1(HR15Y)　can　be　reached　when　the　content　of　hollow　microspheres　is　31　wt.%.　The　coating　density　is　0.5　g/cm3　and　the　bonding　strength　is　as　high　as　18　MPa.　The　performance　of　the　epoxy-based　coating　is　comprehensively　better　than　aluminum-based　coatings　in　five　essential　indices.　This　study　is　expected　to　provide　a　new　technical　path　for　obtaining　high-quality　abradable　seal　coatings　to　guarantee　the　efficient　and　safe　operation　of　compressors.　©　2020