Linepipe with cermet internal liner

Abstract

A linepipe with cermet internal liner includes: a base pipe; a cermet layer comprising corundum and titanium; and an alloy layer comprising chromium, nickel and iron; wherein the cermet layer and the alloy layer are respectively provided on an internal wall of the base pipe from inside out along a radial direction thereof. From inside out, the cermet layer includes: anα-Al2O3 ceramic layer, a transition layer combined by two phases ofα-Al2O3 and metallic titanium, and a metallic titanium layer, wherein thicknesses of the three layers respectively account for ¼, ½ and ¼ thereof the cermet layer. A simple method for preparing the linepipe includes: mixing powders of Fe2O3, Al, TiO2, Cr2O3 and NiO and sending into a base pipe, and sending the base pipe into a ultra-long centrifuge, so as to produce a linepipe of over 10 meters.

Dependencies are inferred from the claim text.