According to this arrangement, no heavy metal contamination will be caused by the sprayed material, and since the sprayed film is further subjected to a sealing treatment using {HEAD ~ polymer}, cracks are not likely to occur to the sprayed film even when the plasma process is performed continuously for a long period of time and the high frequency electrode repeatedly expands and contracts along with the thermal cycle, and thus the corrosion of electrode conductor of the base material through cracks formed to {TAIL ~ the sprayed film} that may cause heavy metal contamination is prevented 
According to this arrangement , no heavy metal contamination will be caused by the sprayed material , and since the sprayed film is further subjected to a sealing treatment using { HEAD ~ polymer } , cracks are not likely to occur to the sprayed film even when the plasma process is performed continuously for a long period of time and the high frequency electrode repeatedly expands and contracts along with the thermal cycle , and thus the corrosion of electrode conductor of the base material through cracks formed to { TAIL ~ the sprayed film } that may cause heavy metal contamination is prevented
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