Metal surface alloying agent and preparation method thereof

Abstract

The invention discloses a metal surface alloying agent, which is prepared from the following components by weight: 80-92% of vegetable oil, 2-8% of metal compounds and 5-15% of a catalyst. The metal compounds include an aluminum-containing compound, a calcium-containing compound, a boron-containing compound, a magnesium-containing compound, a titanium-containing compound and a molybdenum-containing compound. Amount of each metal compound realizes the following mass fraction of metal atoms in the metal surface alloying agent: 0.01-0.3% of aluminum atoms, 0.01-0.5% of titanium atoms, 0.1-0.5% of boron atoms, 0.5-2% of calcium atoms and 0.5-3% molybdenum atoms. The invention also discloses a preparation method of the alloying agent. The metal surface alloying agent does not contain sulfur, chlorine or phosphorus, meets the requirements of environmental protection and has good extreme pressure antiwear performance and antioxidant properties.

Description

Technical field [0001] The invention relates to the technical field of high-energy mechanical alloying, in particular to a metal surface alloying agent and a preparation method thereof. Background technique [0002] According to statistics from international authoritative organizations, the three major losses of metal material wear, corrosion and fatigue account for about 30% of the total industrial output value. Friction and wear is a ubiquitous natural phenomenon. Friction loses about one-third of the world's primary energy. Wear is one of the three most important forms of damage and failure of materials and equipment. Lubrication is to reduce friction, reduce or avoid The most effective technique for wear. The development of lubrication technology with good anti-wear performance, high load-bearing capacity, a certain repair function on the worn surface, and no or little pollution to the environment is one of the important topics of contemporary chemistry, material science and...

AI Technical Summary

Problems solved by technology

[0003] Zinc dialkyldithiophosphate (ZDDP) high-efficiency extreme pressure antiwear agent has been an indispensable additive component of internal combustion engine oil and other oil products since the middle of the 20th century, and is also obtained in industrial oils such as gear oil and hydraulic oil. It has been widely used, but now it has become difficult to adapt to the needs of the development of the situation

This is because: (1) the phosphorus-containing conversion products of ZDDP will poison the catalyst in the three-way catalytic converter used to reduce the emission of harmful gases such as nitrogen oxides (NOx) in automobile exhaust and affect the oxygen sensor; (2) ZDDP will Generate ash, block the filter system, and have a negative impact on the particulate filter of the diesel engine; (3) Element Zn will cause electrochemical corrosion of some alloy bearings (mainly silver and lead-containing parts); (4) at higher than Under the working condition of 160 degrees, it will lose its anti-oxidation and extreme pressure and anti-wear properties due to rapid decomposition

[0004] Chinese patent invention patent ZL200910067880.3 discloses a ceramic alloy coupling agent, which is an anti-wear additive containing magnesium, aluminum, boron and titanium ceramic metal, and is a mixture of various components. In order to ensure good suspension and dispersion The dispersant used in it contains chlorine, which has potential safety and environmental risks

[0005] Chinese patent ZL200710143950.X discloses a nanoscale ceramic-metal composite additive for lubricating oil and grease. The additive is a composition liquid containing boron nitride, molybdenum, and copper powder; the boron nitride, molybdenum, and Copper powder powder is a nano-scale spherical solid particle formed by boron nitride and molybdenum in a covalent bond structure and copper in a coordination bond structure; boron nitride is a spherical skeleton, and molybdenum is coated on it in a layered form , copper is combined with the crystal defects of the sphere in the form of points and flakes; the proportion of boron nitride, molybdenum and copper in the powder is 7-8.5:1-1.5:0.5-1. The disadvantage of this additive is Poor oil solubility, prone to precipitation

[0007] (1) Contains sulfur, phosphorus and zinc, which is prone to corrosion, poisoning and high temperature failure; (2) Contains chlorine, which will cause corrosion; (3) Poor oil solubility, prone to precipitation

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