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Nickel base self-fusible alloy-rare earth composite coating material and its preparing method

A nickel-based self-melting and rare-earth composite technology, applied in the field of surface metallurgy, can solve the problems of mismatch of hardness and plasticity of the coating, easy cracking and peeling of the coating, low crack sensitivity, etc., to achieve excellent surface quality, enhanced metallurgical bonding, The effect of high corrosion resistance

Inactive Publication Date: 2007-02-07
HEFEI UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention uses the modification effect of rare earth metals to provide a kind of high hardness, high wear resistance, high corrosion resistance, low brittleness, low crack sensitivity, good combination of coating and base material, eliminating or reducing Fe's " Diluted", the nickel-based self-fluxing alloy-rare earth composite coating material formed at a lower temperature and its preparation method solve the problems that the hardness and plasticity of the strengthened coating do not match, and the coating is easy to crack and peel off

Method used

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  • Nickel base self-fusible alloy-rare earth composite coating material and its preparing method
  • Nickel base self-fusible alloy-rare earth composite coating material and its preparing method
  • Nickel base self-fusible alloy-rare earth composite coating material and its preparing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] In this example, the optimal weight percentage range of the chemical components contained in component A is C: 0.7-0.8, Cr: 13-16, Si: 3.2-3.5; B: 2.8-3.5, Fe: ≤13, Ni: more than Quantity; cerium-rich alloy mixed rare earth powder is used as component B, and the weight percentage of components contained in component B is Ce: 47.5-52.5, La: 26-28, Nd: 13-17, Pr: 4-8, Fe≤ 0.3, Mg≤0.05, Mo≤0.1, C≤0.05, powder particle size: -100~+280 mesh.

[0054] The mixing weight percentage of component A and component B is A: 99.8%, B: 0.2%, and the sum of the two components is 100%.

[0055] Wherein, the proportioning ratio of component A can be specifically taken as:

[0056] C: 0.75, Cr: 16, Si: 3.4, B: 3.0, Fe: ≤11, Ni: balance;

[0057] Or C: 0.7, Cr: 15, Si: 3.3, B: 2.8, Fe: ≤11, Ni: balance;

[0058] Or C: 0.75, Cr: 15, Si: 3.4, B: 3.0, Fe: ≤11, Ni: balance;

[0059] Or C: 0.8, Cr: 16, Si: 3.5, B: 3.3, Fe: ≤ 11, Ni: balance.

[0060] The preparation process is:

[0061...

Embodiment 2

[0080] This embodiment has the same process conditions as in Example 1, and component A also adopts the same composition as in Example 1, except that the rare earth yttrium powder is used as component B, and the weight percentage of component B is Y : 99.2~99.7, (La+Sm+Gd+Td+Dy+Ho+Er+Yb)≤0.1, Fe≤0.05, Si≤0.02, Ca≤0.1, O≤0.3, C≤0.03, Ni≤0.05, Mg ≤0.05, (Ta+Ti)≤0.2, powder particle size: -100~+280 mesh.

[0081] The weight percentage of component A and component B is A: 99.6%, B: 0.4%, and the sum of the two components is 100%.

Embodiment 3

[0083] The present embodiment has the same processing conditions as in Example 1, and component A also adopts the same composition as in Example 1, except that lanthanum oxide powder is used as component B, and the weight percentage of component B is La2O3 : 99.90~99.95, (CeO 2 +Pr 6 o 11 +Nd 2 o 3 +Sm 2 o 3 +Y 2 o 3 )≤0.1, Fe 2 o 3 ≤0.001, SiO 2 ≤0.03, CaO≤0.01, powder particle size: -100~+280 mesh.

[0084] The weight percentage of component A and component B is A: 99.7%, B: 0.3%, and the sum of the two components is 100%.

[0085] The nickel-based self-fluxing alloy-rare earth composite coating prepared in the above-mentioned embodiment 2 and embodiment 3 can also improve the wear resistance, corrosion resistance, heat resistance, etc. of the coating to varying degrees, and can be applied to various Parts in service under harsh working conditions such as corrosion, wear, and heat.

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Abstract

The invention is a nano-particulate demulsifying agent used in demulsification of trinary oil recovery produced fluid. The application of new technique of trinary oil recovery enhances the crude oil recovery, where the polymer injection oil-recovery technique increases the oil, obviously, but also causes the difficulty in demulsifying the produced fluid at the same time. Its character lies in that: the nano-particulate demulsifying agent is composed of particle nucleating material which processes the surface of nano silicon oxide material by silane coupler and fluorine compound and reacting solvent containing arenes as dimethylbenzene, as well as polyether demulsifying agent as multicomponent polyether, amine polyether and resin polyether. It effectively solve the problem about the demulsification of trinary oil recovery polymer injection produced fluid, field used quantity little, demulsifying speed rapid, dehydrating efficiency high and oil-water interface regular.

Description

Technical field: [0001] The invention relates to the surface metallurgy technology for carbon steel and alloy steel parts to obtain wear resistance and corrosion resistance, especially a nickel-based self-fluxing alloy-rare earth with high hardness, high wear resistance and high corrosion resistance added to the steel matrix Composite coating materials and their preparation. Background technique: [0002] The surface strengthening technology of coating a layer of high hardness, high wear resistance and high corrosion resistance alloy coating on ordinary carbon steel and low alloy steel substrate has been widely used. The coating materials include iron base, nickel base and cobalt base Alloys, etc., the coating process methods include surfacing, thermal spraying, thermal spray welding, laser cladding, plasma cladding, vacuum sintering, etc. Among them, based on the cost performance of coating materials and process methods, the preparation of nickel-based alloy coatings by va...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C24/10
Inventor 宣天鹏闵丹祖国全向启琦
Owner HEFEI UNIV OF TECH
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