B-C-N ternary hard coating

Abstract

The invention discloses a B-C-N ternary hard coating prepared through radio frequency (13.56MHz) magnetron sputtering. A Ti, TiN and Ti-B-C-N multi-layer transition coating is formed on the surface of a metal matrix to improve the bonding property of the B-C-N hard coating and the metal matrix; meanwhile, a proper graphite / boron composite target and corresponding sputtering process parameters areselected, a high-performance hard coating close to a stoichiometric ratio of BC2N is obtained, the thickness of B-C-N in the coating is about 150nm, the atomic percentage of elements B, C and N on the surface of a film is 23.4, 52.2 and 24.4, and the hardness of the surface is about 15GPa.

Description

technical field

[0001] The invention relates to the technical field of a material surface coating, in particular to a B-C-N ternary hard coating. Background technique

[0002] According to the structural similarity between diamond and cubic BN (c-BN), it is theoretically expected that B-C-N ternary hard coatings can be synthesized, and it is expected that it can combine the ultra-high hardness of diamond with the high temperature stability and oxidation resistance of c-BN. sex etc. After extensive experimental research, it has been confirmed that the synthesis of B-C-N ternary hard coatings is indeed feasible, and the B-C-N ternary hard coatings do have the same ultra-high hardness as diamond and cubic BN. Compared with hard coatings, it also has incomparable application advantages such as excellent high-temperature chemical stability and low internal stress of the coating. Therefore, B-C-N ternary hard coatings have not only become a research hotspot in the field of hard ...

Examples

Embodiment Construction

[0015] Hereinafter, the present invention will be described in detail through specific examples.

[0016] A kind of B-C-N ternary hard coating that is made due to radio frequency (13.56MHz) magnetron sputtering, is specifically prepared by the following steps:

[0017] First, W6Mo5Cr4V2 high-speed steel was selected as the base material, and its surface was polished, and cleaned with acetone, alcohol, and deionized water in an ultrasonic cleaner for about 10 minutes, and then dried with nitrogen for use.

[0018] Subsequently, the matrix material is placed on the sample stage in the vacuum chamber, and the Ti target and the graphite / boron composite target are respectively placed in different target positions, wherein the graphite / boron composite target is a circular boron sleeve Except for flake graphite, and the area ratio of graphite and boron is 2.2:1, the purity of graphite is 99.999%, the purity of boron is 99.9%, and the distance between graphite / boron composite target a...

technical field

[0001] The invention relates to the technical field of a material surface coating, in particular to a B-C-N ternary hard coating. Background technique

[0002] According to the structural similarity between diamond and cubic BN (c-BN), it is theoretically expected that B-C-N ternary hard coatings can be synthesized, and it is expected that it can combine the ultra-high hardness of diamond with the high temperature stability and oxidation resistance of c-BN. sex etc. After extensive experimental research, it has been confirmed that the synthesis of B-C-N ternary hard coatings is indeed feasible, and the B-C-N ternary hard coatings do have the same ultra-high hardness as diamond and cubic BN. Compared with hard coatings, it also has incomparable application advantages such as excellent high-temperature chemical stability and low internal stress of the coating. Therefore, B-C-N ternary hard coatings have not only become a research hotspot in the field of hard ...

Examples

Embodiment Construction

[0015] Hereinafter, the present invention will be described in detail through specific examples.

[0016] A kind of B-C-N ternary hard coating that is made due to radio frequency (13.56MHz) magnetron sputtering, is specifically prepared by the following steps:

[0017] First, W6Mo5Cr4V2 high-speed steel was selected as the base material, and its surface was polished, and cleaned with acetone, alcohol, and deionized water in an ultrasonic cleaner for about 10 minutes, and then dried with nitrogen for use.

[0018] Subsequently, the matrix material is placed on the sample stage in the vacuum chamber, and the Ti target and the graphite / boron composite target are respectively placed in different target positions, wherein the graphite / boron composite target is a circular boron sleeve Except for flake graphite, and the area ratio of graphite and boron is 2.2:1, the purity of graphite is 99.999%, the purity of boron is 99.9%, and the distance between graphite / boron composite target a...