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