Patent ID: 6817550
Filing Date: 2004-11-16
Classification: B05B,C04B,Y10S,Y10T

Abstract:
A spray nozzle comprising:a nozzle body, a nozzle entry orifice through which a material to be sprayed can enter, a nozzle bore through which a material to be sprayed can pass, a nozzle exit orifice through which a material to be sprayed can exit, a sintered polycrystalline diamond compact bore liner in said bore for providing low wear, durable and long-lasting service in the nozzle, interstitial spaces in said diamond compact, solvent-catalyst metal located in said interstitial spaces, a zone in said diamond compact that includes both sintered diamond and solvent-catalyst metal, said zone having a composition gradient of solvent catalyst metal content to diamond content, said zone further having a first side and a second side, the ratio of diamond to solvent catalyst metal being higher at said first side than at said second side, chemical bonds in the sintered polycyrstalline diamond compact bore liner, said chemical bonds including diamond-to-diamond bonds, diamond-to-metal bonds, and metal-to-metal bonds.