Method for suppressing edge effect during preparation of blade erosion-resistant coating
A preparation process and edge effect technology, applied in the surface field, can solve problems such as edge temperature increase, binding force decrease, electric field strength increase, etc., to achieve the effect of ensuring uniformity and suppressing edge effect.
Active Publication Date: 2018-05-18
AVIC BEIJING AERONAUTICAL MFG TECH RES INST
View PDF3 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Due to the influence of the edge effect, the negative bias voltage can reach more than five times at the edge, the thickness of the sheath layer increases rapidly to several millimeters, and the electric field intensity increases rapidly. Even if the bias voltage is reduced, the unevenness in the deposition process cannot be eliminated, and it will causing a rapid decline in binding
What's more serious is that the rapidly increasing strong current density at the edge will cause the temperature of the edge to rise sharply, and improper control will even burn the edge
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0026] Such as figure 1 Shown, the present invention provides a kind of method that suppresses the edge effect in blade erosion-resistant coating preparation process, and it comprises the steps:
[0027] a) Arranging the electrode sheet 1: the electrode sheet 1 is arranged on the outer edge of the blade 2, and the electrode sheet 1 has a distance D from the outer edge of the blade 2;
[0028] b) Installing the blade 2: putting the blade 2 and the electrode sh...
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
Login to View More Abstract
The invention provides a method for inhibiting edge effect in a preparation method of an erosion-resistant coating of a vane. The method comprises the following steps: (a) arrangement of electrode plates: arranging the electrode plates at the outer edge of the vane, wherein a distance is formed between each electrode plate and the outer edge of the vane; (b) vane clamping: placing the vane and the electrode plates in a vacuum chamber, arranging an electric arc target in the vacuum chamber, and filling first gas in the vacuum chamber; (c) deposition of the erosion-resistant coating: feeding first bias voltage to the vane and the electrode plates, feeding first current to the electric arc target, separating metal ions from the electric arc target, separating first ions from the first gas, combining the metal ions and the first ions and then depositing on the outer surface of the vane. According to the method for inhibiting the edge effect in the preparation method of the erosion-resistant coating of the vane, the auxiliary same-potential electrode plates are arranged on two sides of the vane so as to inhibit the edge effect of the vane, and the binding force of the coating at the edge part of the vane and the thickness of the coating are uniform.
Description
technical field [0001] The invention relates to the field of surface technology, in particular to a method for suppressing edge effects in the preparation process of blade erosion-resistant coatings. Background technique [0002] At present, superhard and wear-resistant nitride coatings have been widely used on cutting tools and molds, and with the development of the aviation industry, such coatings have become erosion-resistant and anti-corrosion coatings for compressor blades, which can be used for compressor blades. The service life of the blade is increased by 2 to 3 times. Most of these superhard coatings are formed by arc evaporation technology or magnetron sputtering deposition. Due to the diffraction of arc evaporation technology or magnetron sputtering deposition and the complex effect of the plasma sheath in the deposition process, the deposited workpiece is often They are all tools and molds with relatively simple shape and structure. Even so, due to the existenc...
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
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): C23C14/32
CPCC23C14/325
Inventor 孙刚刘星马国佳崔向中
Owner AVIC BEIJING AERONAUTICAL MFG TECH RES INST