| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To enhance further the corrosion resistance of a tube with a thermally sprayed outer surface made of cast iron or steel with the anticorrosion layer of the pseudo Zn-Al alloy on outside. <P>SOLUTION: Since the anticorrosion layer formed on the outer surface of the tube by metal thermal spraying is made by a pseudo alloy layer which is a mixture of a zinc alloy layer containing a zinc layer or aluminum and an aluminum alloy layer containing silicon, a corrosion product arises which is firm and hard to exfoliate on the surface of anticorrosion layer under corrosive environment to more improve corrosion resistance of the tube compared to the one having an anticorrosion layer of the conventional pseudo Zn-Al alloy, thereby extending the anticorrosion life. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
