Thermal spraying nickel base material

Abstract

A thermal spraying nickel base material is characterized in that a medicine core comprises, by mass, 56-74% of metallic nickel, 22.0-27.0% of metallic chromium, 5-9% of metallic aluminum, 2-4% of metallic copper, 4.0-7.0% of metallic iron, 2.0-3.5% of metallic titanium, 2-6% of boron, 2-6% of magnesium and 0.5-1% of yttrium. The thermal spraying nickel base material protects the surface of petrochemical equipment under the conditions of high-temperature flushing and high-temperature corrosion, has the excellent capabilities of preventing corrosion of NaCl, KCL, NH, NOx, H2S and SO2, and has the advantages of being very good in abrasion-resisting performance and the like. Holes in a coating do not need to be sealed, and the operational cycle of a biomass boiler can be obviously prolonged.

Description

technical field [0001] The invention belongs to the field of surface engineering in material processing engineering, and is mainly applied to thermal spraying nickel-based materials for surface protection of petrochemical equipment and parts. Background technique [0002] The corrosion damage of petroleum and chemical equipment parts is becoming more and more serious. Various chemical equipment and pipelines are often in contact with acid, alkali, and salt solutions, and are subject to strong corrosion. It will perforate, and even cause serious accidents such as burning and explosion. How to prevent corrosion and reduce the occurrence of catastrophic accidents is a subject that countries all over the world are studying. Using thermal spraying technology, a layer of corrosion-resistant metal or cermet coating is applied on the surface of equipment and pipelines, which can effectively solve the corrosion problem. Moreover, the coating process prepared by thermal spraying...

AI Technical Summary

Problems solved by technology

[0004] In view of the above deficiencies, the object of the present invention is to provide a kind of thermal spraying nickel-based material which is mostly used to solve the problem of surface protection of equipment under high temperature erosion and high temperature corrosion conditions.

[0006] The invention solves the problem of surface protection of petrochemical equipment under high temperature erosion and high temperature corrosion conditions, has a corrosion-resistant and wear-resistant coating with high bonding strength, and excellent resistance to NaCl, KCl, NH, NOx, H2S, SO2 Corrosion ability, excellent wear resistance and other characteristics