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Preparation method of multilayer nano-composite-class diamond films on surface of camshaft

A diamond thin film and nanocomposite technology, applied in coating, metal material coating process, ion implantation plating, etc., can solve the problems of thermal matching, poor structural matching, peeling and peeling, high stress, etc., to improve friction and wear , easy to magnify, reduce the effect of insufficient power

Inactive Publication Date: 2013-06-19
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the diamond-like carbon film is directly prepared on the surface of the camshaft, due to poor thermal matching and structural matching, it will lead to large stress, causing peeling and peeling

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The multilayer nanocomposite diamond-like carbon film on the surface of 45# carbon steel camshaft is composed of coating substrate / Ti layer / TiSi layer / TiSiC layer / diamond like layer, and the treatment process is carried out according to the following steps: 1) The 45# carbon steel camshaft Carry out conventional degreasing and cleaning, and then perform ultrasonic cleaning in chloroform solution; (2) Put the 45# carbon steel camshaft in a multi-target composite sputtering deposition system for argon plasma sputtering cleaning, argon pressure 2 ~5Pa, bias voltage 1000~1600V, frequency 60~200KHz, 15~20min; (3) Magnetron sputtering Ti layer, metal Ti target as cathode, processing time 15~30min, bias voltage 600~1200V, frequency 60 ~160KHz; target current 12~20A, frequency 60~160KHz; (4) Magnetron sputtering TiSi layer, keep the above conditions unchanged, deposition time 10~20min; (5) Magnetron sputtering TiSiC layer (6) The hydrogen-containing diamond-like carbon film wit...

Embodiment 2

[0022] The multilayer nano-composite diamond-like film on the surface of the 80B camshaft is composed of coating substrate / Cr layer / TiCri layer / TiCrC layer / diamond-like layer. The treatment process is carried out according to the following steps: 1) The 80B camshaft is routinely degreased and cleaned, and then Ultrasonic cleaning is carried out sequentially in chloroform solution; (2) Place the 45# carbon steel camshaft in a multi-target composite sputtering deposition system for argon plasma sputtering cleaning, the argon gas pressure is 2-5Pa, and the bias voltage is 1000- 1600V, frequency 60-200KHz, 15-20min; (3) Magnetron sputtering Ti layer, metal Ti target as cathode, processing time 15-30min, bias voltage 600-1200V, frequency 60-160KHz; target current 12-20A , frequency 60-160KHz; (4) magnetron sputtering TiCr layer, keep the above conditions unchanged, deposition time 10-20min; (5) magnetron sputtering TiCrC layer, (6) close the magnetron sputtering target, Under the c...

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Abstract

The invention discloses a preparation method of multilayer nano-composite-class diamond films on the surface of a camshaft. Due to the adoption of a high-frequency and high-power impulse magnetron sputtering technology, the multilayer nano-composite-class diamond films are deposited on the surface of the camshaft. The thicknesses of the composite films are 0.2-0.5 micrometer, the thickness of a bearing layer of the composite films is 1-3 micrometers, and the surface thickness of the composite films is 1-3 micrometers. The surface binding force of the composite film camshaft is up to 60N.

Description

technical field [0001] The invention relates to a method for preparing a camshaft (material: 45# carbon steel, ductile iron, 80B and various alloy steels) and a diamond-like lubricating film on the surface of the camshaft, specifically using a multi-target magnetron sputtering device in the Camshaft (Material: 45# carbon steel, nodular cast iron, 80B and various alloy steels) peach heart and nano-multilayer composite diamond-like film on the surface of the shaft. Background technique [0002] The body of the camshaft is a cylindrical rod the same length as the cylinder bank. There are several cams on it, which are used to drive the valves. The common faults of the camshaft include abnormal wear, abnormal noise and fracture. Symptoms of abnormal wear often appear before abnormal noise and fracture. If the oil supply pressure of the oil pump is insufficient due to long-term use, or the lubricating oil passage is blocked so that the lubricating oil cannot reach the camshaft, o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/06C23C14/34C23C16/26C23C16/50
Inventor 张俊彦张斌张克金强力魏晓川安宇鹏武斌
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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