Surface anticorrosion wear-resistant composite coating for cylinder sleeve of automobile engine applying bio-oil

An automobile engine and composite coating technology, which is applied in coating, metal material coating process, liquid chemical plating, etc., can solve the problem of not meeting the requirements of automobile engine cylinder liner surface protection, low coating density, coating Easy to fall off and fail to solve problems such as cracking, peeling and wear, improve density, and improve long-term anti-corrosion and wear-resisting performance

Active Publication Date: 2015-01-28
黄山市开发投资集团有限公司
View PDF6 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the commonly used surface strengthening treatment technologies for automobile engine cylinder liners include chrome-plated coating, ion nitriding, chemical plating coating, etc. Among them, chrome-plated coating has been gradually eliminated due to strict restrictions on environmental protection requirements; ion nitriding technology due to equipment requirements The high cost caused by the high cost makes it difficult to promote on a large scale; the electroless coating technology has been widely used due to its simplicity, easy control and low cost
Common Ni-P, Ni-Cu-P and other coatings have a certain wear resistance, and the proportion of coating elements and the preparation process are different, resulting in a large difference in performance
Judging from the current existing coatings, due to the low density of the coating, the corrosion resistance is poor. In addition, due to the strong interfacial stress between the coating and the substrate, especially in the presence of corrosive biological In the oil environment, the coating is easy to fall off and fail during long-term friction, which cannot meet the surface protection of automobile engine cylinder liners for bio-oil applications.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Surface anticorrosion wear-resistant composite coating for cylinder sleeve of automobile engine applying bio-oil
  • Surface anticorrosion wear-resistant composite coating for cylinder sleeve of automobile engine applying bio-oil

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0022] First prepare lye 10L: NaOH 2g·L -1 , NaHCO 3 8g·L -1 , Na 3 PO 4 12H 2 O 1.2g L -1 , Na 2 SiO 3 7g·L -1 , OP-200.3g·L -1 . Reconstitute 10L of acid solution: 0.2mol·L -1 h 2 SO 4 Solution 5L and 0.2mol·L -1 Mixed acid solution of HCl solution 5L. Heat the lye and acid to 70°C. Soak the cylinder liner of the engine to be treated in lye for 5 minutes to remove oil, then take out the cylinder liner and wash it with deionized water until the solution is neutral after washing, then soak it in acid solution for 5 minutes to remove rust, take it out and use it in the same way Wash with ionic water until the solution is neutral after washing, and complete the pre-treatment of degreasing and derusting the cylinder liner.

[0023] Put the pre-treated cylinder liner vertically into the cylinder opening liquid, the composition of the cylinder opening liquid: NiSO 4 5g·L -1 , CuSO 4 5g·L -1 , Ce(NO 3 ) 3 10g·L -1 , La(NO 3 ) 3 12 g· L -1 , C 6 h 5 Na 3...

example 2

[0026] First prepare lye 10L: NaOH 4g·L -1 , NaHCO 3 6g·L -1 , Na 3 PO 4 12H 2 O 1g L -1 , Na 2 SiO 3 7.5g·L -1 , OP-200.4g·L -1 . Reconstitute 10L of acid solution: 0.1mol·L -1 h 2 SO 4 Solution 5L and 0.3mol·L -1 Mixed acid solution of HCl solution 5L. Heat the lye and acid to 75°C. Soak the cylinder liner of the engine to be treated in lye for 4 minutes to remove oil, then take out the cylinder liner and wash it with deionized water until the solution is neutral after washing, then soak it in acid solution for 6 minutes to remove rust, take it out and use it in the same way Wash with ionic water until the solution is neutral after washing, and complete the pre-treatment of degreasing and derusting the cylinder liner.

[0027] Put the pre-treated cylinder liner vertically into the cylinder opening liquid, the composition of the cylinder opening liquid: NiSO 4 8g·L -1 , CuSO 4 6g·L -1 , Ce(NO 3 ) 3 14g·L -1 , La(NO 3 ) 3 8g·L -1 , C 6 h 5 Na 3 o ...

example 3

[0030] The preprocessing part is the same as Example 2.

[0031] Put the pre-treated cylinder liner vertically into the cylinder opening liquid, the composition of the cylinder opening liquid: NiSO 4 10g·L -1 , CuSO 4 8g·L -1 , Ce(NO 3 ) 3 16g·L -1 , La(NO 3 ) 3 8g·L -1 , C 6 h 5 Na 3 o 7 2H 2 O 10g·L -1 , C 3 h 6 o 3 28g·L -1 ; The continuous phase composition is: NaH containing 2.2% Graphene in mass percent 2 PO 2 ·H 2 O(58g·L -1 ) solution; the volume of the open cylinder liquid and the continuous phase solution is 9L, and the continuous phase drip rate is 300mL min -1 The pH regulator is NaOH solution with a mass percentage of 40%, and the pH is controlled at 4.5-4.6 for the first 10 minutes, kept at 6.5-6.6 for the middle 10 minutes, and kept at 8.5-8.6 for the last 10 minutes; the temperature of the plating solution is kept at 92 ° C, and the stirring speed is 500 rpm. When finished, remove the cylinder liner and let it dry.

[0032] Then heat and...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
Login to view more

Abstract

A surface anticorrosion wear-resistant composite coating for a cylinder sleeve of an automobile engine applying bio-oil is disclosed. The coating comprises a Ni-Cu-Ce-La-P-Graphene composite material, and can be prepared by adopting a gradient chemical plating coating process. The coating is characterized in that: Ni, Cu, Ce, La and P in a special ratio, and Graphene are simultaneously deposited on the surface of the cylinder sleeve, and the composite coating with good anticorrosion and wear-resistant functions is prepared. The coating is advantageous in that: the binding force of the coating and a substrate is strong, compactness of the coating is high, the coating has excellent anticorrosion and wear-resistant effects especially for the bio-oil, a preparing method of the coating is simple, convenient, and prone to industrial production, and the coating can be widely used in the fields of metal material protection, mechanical surface treatment, energy-saving and environmental friendly automobiles, and the like.

Description

technical field [0001] The invention belongs to the technical field of metal surface treatment, in particular to an anti-corrosion and wear-resistant composite coating on the surface of a cylinder sleeve of an automobile engine for application of bio-oil. Background technique [0002] With the emission of greenhouse gases caused by the use of fossil energy and the continuous depletion of fossil energy, people try to develop new clean and renewable energy to replace traditional fossil fuels. Bio-oil is a kind of liquid fuel converted from solid biomass by various liquefaction technologies. It is currently one of the most promising alternative fuels for engines. However, bio-oil contains a relatively high content of acidic organic matter. During the delivery process of the fuel pump into the fuel injector atomization, and before the atomized fuel is mixed with air in the cylinder and compressed and ignited, the acidic components containing polar groups in the bio-oil are easil...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C23C18/48C23C18/50C22C19/03C22C30/02
CPCC22C19/03C22C30/02C23C18/48C23C18/50
Inventor 徐玉福彭玉斌谢添唐卡李豹胡献国
Owner 黄山市开发投资集团有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap