A Mechanic reports he was informed an ERJ-145LR #1 main brake had caught on fire while taxiing off the runway; days after he had performed a required detailed visual inspection (DVI) for oxidation during a tire change.

Narrative

I was assigned to perform a PS-1 inspection on an aircraft on Feb/09. While performing the PS-1 inspection; I noticed the #1 main tire was worn to limits. Subsequently; I removed and replaced the #1 main tire assembly IAW the job card. I performed the required detailed visual inspection (DVI) of the brake for oxidation per procedure 2.F. At that time I did not notice any oxidation that could be detrimental to the brake assembly or its operation. Because of this observation; I signed off the work card accordingly. The aircraft left ZZZ1 and flew to other places safely for the next several days. However; in Feb/09 Mr.X contacted me and told me that the #1 brake on that same aircraft caught on fire while taxiing in ZZZ1 in Feb. I was told that the brake manufacturer suggested that was an oxidation on the #1 brake; and that is what caused the fire. Although I followed procedure per the work card; I recommended a computer based training on the inspection of brake assemble. I also suggest that a brake manufacturer technician representative provide some OJT on the inspection of brake assembly to all of the mechanics.Callback conversation with reporter revealed the following information: Reporter stated he believes the brakes are a carbon fiber type. He didn't notice any particular amount of oxidation buildup on the #1 brake he checked during replacement of the main tire. Currently; little is known about the actual cause of the brake catching on fire; days after he changed the tire.