Diesel engine part surface multilayer wear-resisting anti-friction thin film and preparing method thereof
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology for diesel engines and parts, applied in the field of multi-layer films, can solve the problems of low life expectancy, low friction, and difficulty in meeting high load capacity, and achieve the effects of increasing service life, improving service life and improving surface performance.
Active Publication Date: 2017-06-20
LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH
View PDF11 Cites 2 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
One of the key problems is the lubrication problem, the traditional electroplating method is difficult to achieve environmental friendliness
Liquid lubrication is difficult to meet the requirements of high load, low friction and long life
[0003] Most of the existing diesel engine parts use electroplating technology and liquid lubrication technology. The newer technology is diamond-like technology, but there are problems of not improving the service life and the efficiency is still low.
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
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0027] Example 1 Taking the multi-layer wear-resistant and friction-reducing film on the surface of a diesel engine plunger as an example
[0028] (1) Chemical cleaning. Use petroleum ether, acetone, and alcohol to ultrasonically clean the base material of the diesel engine plunger, and the ultrasonic time for each solvent is 5 minutes.
[0029] (2) Heating and vacuuming. Ensure that the film is deposited within a certain temperature and vacuum range, the heating temperature is 160 °C, and the vacuum range is 2×10 -3 Pa.
[0030] (3) Plasma source (glow discharge) bombardment cleaning. Introduce argon gas into the vacuum chamber, turn on the plasma source to bombard and clean the substrate surface, and remove the attachments on the substrate surface. The flow rate of argon gas is 150 sccm, the plasma source current is 60A, the substrate bias voltage is 500V, and the bombardment time is 30min. .
[0031] (4) Deposit a Cr layer. Introduce argon gas, turn on the magnetron s...
Embodiment 2
[0037] Example 2 Taking the multi-layer wear-resistant and friction-reducing film on the surface of the tappet washer of a diesel engine as an example
[0038] (1) Chemical cleaning. Use petroleum ether, acetone, and alcohol to ultrasonically clean the base material of the diesel engine tappet gasket, and the ultrasonic time for each solvent is 5 minutes.
[0039] (2) Heating and vacuuming. Ensure that the film is deposited within a certain temperature and vacuum range, the heating temperature is 160 °C, and the vacuum range is 2×10 -3 Pa.
[0040] (3) Plasma source bombardment cleaning. Introduce argon gas into the vacuum chamber, turn on the plasma source to bombard and clean the substrate surface, and remove the attachments on the substrate surface. The flow rate of argon gas is 150 sccm, the plasma source current is 60A, the substrate bias voltage is 500V, and the bombardment time is 30min. .
[0041] (4) Deposit a Cr layer. Introduce argon gas, turn on the magnetron s...
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
Property
Measurement
Unit
adhesivity
aaaaa
aaaaa
friction coefficient
aaaaa
aaaaa
Login to view more
Abstract
The invention relates to a diesel engine part surface multilayer wear-resisting anti-friction thin film. The surface of a diesel engine part sequentially comprises a Cr layer, a Cr / MeC transition layer, an MeC-DLC layer, an a-C:H soft and hard alternative layer and an MoS2 layer from inside to outside, wherein Me is a transition metal element. Firstly, the Cr layer is deposited on the surface of the diesel engine part through magnetron sputtering; secondly, the Cr / MeC transition layer is deposited through magnetron sputtering; thirdly, the MeC-DLC layer is deposited through a magnetron sputtering / plasma assisting chemical vapor phase composite deposition method; fourthly, the a-C:H soft and hard alternative layer is deposited through a plasma assisting chemical vapor phase composite deposition method; fifthly, a microtexture is etched on the a-C:H soft and hard alternative layer through a laser etching method; and finally the MoS2 layer is deposited through magnetron sputtering. By means of the thin film, the surface performance of the diesel engine part can be obviously improved, the service life of the diesel engine part surface multilayer wear-resisting anti-friction thin film is prolonged, and the energy using rate and reliability of the diesel engine part surface multilayer wear-resisting anti-friction thin film are improved.
Description
technical field [0001] The invention belongs to the field of surface treatment and vacuum treatment of diesel engine parts, and in particular relates to a diesel engine part surface prepared by using magnetron sputtering, plasma assistance and laser etching technology, which has good synergistic lubricating effect with diesel oil, high binding force and low friction coefficient. Low, low wear rate, long life multilayer film. Background technique [0002] With the increasing emphasis on environmental protection in our country, energy conservation and emission reduction has become an imperative and important topic. For diesel engines, reducing energy consumption and pollutant emissions is of great significance. One of the key issues is lubrication, and traditional electroplating methods are difficult to achieve environmental friendliness. Liquid lubrication is difficult to meet the requirements of high load, low friction, long life and so on. [0003] Most of the existing d...
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more