The surface should not be passivated. It should be rich in oxygen or its bonds. Adhesives, mainly epoxies bond better in the presence of oxygen rich surfaces.

 Thank you sir for your valuable suggestion. But I'm thinking to use HF acid for surface preparation which removes the top layer of the ceramic tile to enhance better bonding.

Could you suggest me something about this method???

The first piece of advice regarding using HF is to consider every possible option before using HF!

Can you roughen the surface mechanically, with sandblasting or grinder? Enhancing the mechanical adhesion by increasing surface area would be a basic starting point. If you are producing the tiles yourself, you may be able to modify the process to provide a rougher surface during production.

If your situation requires wet etching, you may be able to use nitric acid or even sodium hydroxide, depending on the type of ceramic. Etchant recommendations for particular ceramics are easy to find online. If it's a highly resistant ceramic like alumina then you may indeed be forced to use HF or an HF/HNO3 mixture, but that should be your last choice.

Sir, we want to get surface finish for Silicon Carbide, Boron Carbide, and Alumina ceramic tiles. So please suggest me the right method to have a good surface finish for bonding with adhesives.

Check out these two papers; I'd suggest your best bet would be sanding plus a silane adhesion promoter (ask your adhesive vendor to recommend a compatible one).

Article Surface treatment of alumina ceramic for improved adhesion t...

Article Resin-ceramic bonding: A review of the literature

Unfortunately sand is not effective for roughening of ceramics, such as Alumina, Silicon and Boron Carbide. Sand is too soft for it. Synthetic diamonds or at least SiC particles should be used as abrasives. As a rule of thumb, abrasives should be at lest twice harder than the substrate. Otherwise is to cut bread by bread. See the the juicy Figure 1 in Wakuda et al. 2002 (attached).