{HEAD ~ The metal substrate} prepared in step is immersed in {TAIL ~ the slurry} and subjected to cathodic polarization at a voltage of 100 400 V, thereby glass particles are deposited on the metal substrate surface 
is immersed in
{ HEAD ~ The metal substrate } prepared in step is immersed in { TAIL ~ the slurry } and subjected to cathodic polarization at a voltage of 100 400 V , thereby glass particles are deposited on the metal substrate surface
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH