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A Ni-P-PTFE anti-scale plating by rear earth cerium-induced ultrasonic chemical codeposition and a preparing process thereof

A technology of sonochemistry and preparation technology, applied in the field of rare earth cerium-induced ultrasonic chemical co-deposition Ni-P-PTFE anti-scaling coating, which can solve the problems of poor anti-scaling performance and achieve the effect of improving the anti-scaling performance of the coating

Inactive Publication Date: 2014-10-29
DALIAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention discloses a rare earth cerium-induced ultrasonic chemical co-deposited Ni-P-PTFE anti-scaling coating and a preparation process thereof, which solves the disadvantage of poor anti-scaling performance of the electroless Ni-P alloy (4) coating; Deposition increases the content of PTFE particles in the coating, and improves the anti-scaling performance of the coating on the premise of ensuring the corrosion resistance of the coating

Method used

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  • A Ni-P-PTFE anti-scale plating by rear earth cerium-induced ultrasonic chemical codeposition and a preparing process thereof
  • A Ni-P-PTFE anti-scale plating by rear earth cerium-induced ultrasonic chemical codeposition and a preparing process thereof
  • A Ni-P-PTFE anti-scale plating by rear earth cerium-induced ultrasonic chemical codeposition and a preparing process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The second step, mechanical stirring (speed: 400r / min), active agent FC-134 (purity>90%): 1g / L and PTFE emulsion: 1g / L mixed solution for 1h;

[0029] In the third step, the composition content of the plating solution is: nickel sulfate: 20g / L; sodium hypophosphite: 20g / L; citric acid: 4g / L; sodium acetate: 16g / L; PTFE (particle size: 0.5μm): 1g / L L; active agent FC-134 (purity>90%): 1g / L; cerium sulfate: 0.1g / L;

[0030] The fifth step is to put the pre-treated sample and the activated mixture into an ultrasonic (ultrasonic frequency 800Hz) water bath for 3 hours of plating;

[0031] The seventh step, coating (2) (see figure 1 ) properties: the coating (2) is dense, with a thickness of 80 μm, and the content of PTFE particles (3) in the coating (2) is 30vol% (see figure 2 ), the anti-scaling rate is 0.000010g.m -2 .h -1 .

Embodiment 2

[0033] The second step, mechanical stirring (speed: 400r / min), active agent FC-134 (purity>90%): 2g / L and PTFE emulsion: 2g / L mixed solution for 2h;

[0034] In the third step, the composition content of the plating solution is: nickel sulfate: 30g / L; sodium hypophosphite: 25g / L; citric acid: 6g / L; sodium acetate: 16g / L; PTFE (particle size: 0.5μm): 4g / L L; active agent FC-134 (purity>90%): 2g / L; cerium sulfate: 0.2g / L;

[0035] The fifth step is to put the pretreated sample and the activated mixture into an ultrasonic (ultrasonic frequency of 1000Hz) water bath for 3 hours of plating;

[0036] The seventh step, coating (2) (see figure 1 ) properties: the coating (2) is dense, the thickness is 98μm, and the PTFE particles (3) in the coating (2) contain 40vol% (see figure 2 ), the anti-scaling rate is 0.000001g.m -2 .h -1 .

Embodiment 3

[0038] The second step, mechanical stirring (speed: 400r / min), active agent FC-134 (purity>90%): 1.5g / L and PTFE emulsion: 3g / L mixed solution for 1.5h;

[0039] In the third step, the composition content of the plating solution is: nickel sulfate: 25g / L; sodium hypophosphite: 25g / L; citric acid: 5g / L; sodium acetate: 16g / L; PTFE (particle size: 0.5μm): 2g / L L; active agent FC-134 (purity>90%): 1.5g / L; cerium sulfate: 0.15g / L;

[0040] The fifth step is to put the pretreated sample and the activated mixture into an ultrasonic (ultrasonic frequency of 900Hz) water bath for 3 hours;

[0041] The seventh step, coating (2) (see figure 1 ) properties: the coating (2) is dense, with a thickness of 90 μm, and the content of PTFE particles (3) in the coating (2) is 35vol% (see figure 2 ), the anti-scaling rate is 0.000004g.m -2 .h -1 .

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Abstract

A Ni-P-PTFE anti-scale plating by rear earth cerium-induced ultrasonic chemical codeposition and a preparing process thereof are disclosed. The PTFE content in the plating is increased by rear earth cerium ultrasonic induced codeposition. The Ni-P-PTFE anti-scale plating (2) is prepared on a C45 steel plate (1) substrate. The content of PTFE particles in the plating (2) is 30-40 vol%, and the scaling rate is 0.000010-0.000001 g*m<-2>h<-1>. The preparing process comprises steps of: 1) preparing a sample and performing oil removing treatment and rust removing treatment; 2) dispersing PTFE emulsion by an activating agent; 3) preparing a plating solution; 4) mixing the PTFE activating solution and the plating solution; 5) activating the sample, and performing cerium-induced ultrasonic chemical codeposition; 6) drying; and 7) performing performance detection. The beneficial effects of the anti-scale plating and the preparing process are that: (1) the activating agent can uniformly disperse the PTFE particles; (2) the combination of rare earth-induced codeposition and ultrasonic wave plating allows the PTFE particles in the plating to be high in content and uniform in distribution; and (3) the prepared Ni-P-PTFE plating has a good anti-scale property.

Description

technical field [0001] The invention relates to an anti-scaling composite coating, in particular to a rare earth cerium-induced ultrasonic chemical co-deposition Ni-P-PTFE anti-scaling coating and a preparation process thereof. Background technique [0002] With the continuation of crude oil extraction in oilfields, the industrial and mining conditions of oil wells tend to be more complex (especially the increase in water content), and the corrosion failure behavior of oil pipes is becoming more and more prominent. In order to ensure the stable production of crude oil, further reduce the cost of oil production, and avoid the economic loss caused by the shutdown of production due to the failure of the oil pipeline, it is particularly important to carry out protective treatment on the oil pipeline. At present, according to the characteristics of the tubing itself and the downhole industrial and mining conditions, the corresponding surface modification of the tubing is the key ...

Claims

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Application Information

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IPC IPC(8): C23C18/36
Inventor 付传起王宙张庆乐曹健
Owner DALIAN UNIVERSITY
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