Preparing technology for high-aluminum-content ultra-dense Al-Cr-Si-N coating

A preparation process, al-cr-si technology, applied in the field of preparation of ultra-dense Al-Cr-Si-N nanocomposite coatings with high aluminum content, can solve the problems of low wear and low wear rate, and achieve a wide range of applications , dense structure, high hardness and toughness
CN106987816AActive Publication Date: 2017-07-28TIANJIN UNIV OF TECH & EDUCATION TEACHER DEV CENT OF CHINA VOCATIONAL TRAINING & GUIDANCE
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
TIANJIN UNIV OF TECH & EDUCATION TEACHER DEV CENT OF CHINA VOCATIONAL TRAINING & GUIDANCE
Publication Date
2017-07-28

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Abstract

The invention relates to a nano composite coating and a preparing technology thereof, in particular to a preparing technology for a high-aluminum-content ultra-dense Al-Cr-Si-N nano composite coating. An Al-Cr-Si-N nano composite coating is deposited on a metal or alloy base body through the high-power pulse magnetron sputtering technology. An Al-Cr-Si alloy target is selected as a target material, wherein the atomic ratio of Al to Cr to Si is 6:3:1, purity is 99.8 wt.%, and the size is 300 x 100 x 5 mm; before film coating, inflation of Ar is conducted firstly, striking is conducted at the bias voltage of -800 V, high-power pulse magnetron sputtering of the Al-Cr-Si target is conducted, and bombardment cleaning is conducted on the surface of the base body. Then, the bias voltage is reduced to -30 V, an Al-Cr-Si transition layer is deposited, then inflation of the reaction gas N2 is conducted finally, and deposition of the Al-Cr-Si-N coating is started. The related preparing technology for the high-aluminum-content ultra-dense Al-Cr-Si-N nano composite coating is simple, repeatability is good, and industrial production is easy. The prepared Al-Cr-Si-N coating is high in hardness, good in tenacity, low in internal stress and excellent in abrasion resisting performance; and the coating organization structure is extremely dense and is firmly combined with the base body, and the high-temperature oxidation resisting capability is high.
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Description

technical field

[0001] The invention relates to coating preparation technology, in particular to a preparation technology of ultra-dense Al-Cr-Si-N nanocomposite coating with high aluminum content. Background technique

[0002] With the rapid development of modern industry, high efficiency, high precision, high flexibility and greening have become the important development direction of contemporary advanced manufacturing industry. mainstream. The emergence of high-speed cutting, hard cutting and dry cutting technology has put forward higher and higher requirements for metal cutting tools such as taps, twist drills, gear tools, broaches, small diameter milling cutters, etc. Traditional tools generally have poor wear resistance, Poor high temperature oxidation resistance, short life and other disadvantages are not suitable for the increasingly harsh modern cutting environment, and coating technology is an effective way to solve this problem. The service environment of tool c...

Claims

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