Titanium alloy surface ion carbonitriding treatment device

A technology of carbonitriding and processing equipment, which is applied in the direction of metal material coating process, cleaning hollow objects, chemical instruments and methods, etc., can solve the problems of high brittleness, low bonding force, thin nitride layer, etc., and achieve high temperature stability Guaranteed durability, enhanced adhesion and density, and good thermal stability

Active Publication Date: 2021-05-14
TSINGHUA UNIV +1
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  • Application Information

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Problems solved by technology

[0005] The nitrided layer obtained by ordinary gas nitriding treatment is thin, brittle and has low bonding force

Method used

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  • Titanium alloy surface ion carbonitriding treatment device
  • Titanium alloy surface ion carbonitriding treatment device
  • Titanium alloy surface ion carbonitriding treatment device

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Embodiment Construction

[0024] The titanium alloy surface ion carbonitriding treatment device that the present invention proposes, its structure is as follows figure 1 As shown, it includes infiltration furnace 1, anode top cover 2, cathode metal column 3, outer layer auxiliary cathode cylinder 6, inner layer auxiliary cathode cylinder 9, anode cylinder 8, insulating support plate 10, workpiece table 11, anode metal column 12 , a DC power supply 14 and a bias power supply 15; the outer layer auxiliary cathode cylinder 6, the anode cylinder 8 and the inner layer auxiliary cathode cylinder 9 are coaxially installed in the bottom of the infiltration furnace 1 cavity from outside to inside in turn, and the outer layer The auxiliary cathode cylinder 6, the anode cylinder 8 and the inner layer auxiliary cathode cylinder 9 are respectively connected to the positive and negative poles of the DC power supply 14, and the upper end of the anode cylinder 8 is lower than the upper ends of the outer layer auxiliary...

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Abstract

The invention belongs to the technical field of titanium and titanium alloy surface treatment and particularly relates to a titanium alloy surface ion carbonitriding treatment device. A dual-power system is adopted in the device, an auxiliary cathode is controlled by a set of direct-current power supply, ionization of argon near the auxiliary cathode can be accelerated by applying voltage to the auxiliary cathode, ion collision is excited to accelerate temperature rise, and meanwhile, a workpiece and a cavity in the furnace can be cleaned; and the negative electrode of another set of high-frequency pulse bias power supply is connected with a workpiece, and the positive electrode is grounded, so that the workpiece is in a negative potential, negative bias has an acceleration effect on the diffusion process of plasma on the surface of the workpiece, the bombardment effect of ions on the surface of the workpiece can be improved, and the adhesive force and density of a diffusion layer are enhanced. Ammonia gas and carbon dioxide serve as diffusion media, electron excitation state ions with high internal energy are formed under collision of electrons, a diffusion layer moderate in thickness and uniform in structure is prepared, and the mechanical property and the tribological property of titanium are remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of titanium and titanium alloy surface treatment, and in particular relates to an ion carbonitriding treatment device for the surface of titanium alloy. Background technique [0002] Titanium and titanium alloys have high specific strength, good biocompatibility and corrosion resistance, excellent high temperature performance, hydrogen storage performance and excellent comprehensive performance such as recycling, with the development of advanced manufacturing technology for processing titanium alloys Production, isothermal forging, precision casting, laser forming and other technologies are becoming more and more mature, which makes titanium alloys have more and more application scenarios. [0003] Due to their low density and high strength, titanium and titanium alloys are very suitable for the weight reduction requirements of the automobile industry, and can be used to manufacture automobile engine valves,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C8/36B08B7/00B08B9/08
CPCB08B7/00B08B9/08C23C8/36
Inventor 何永勇张哲浩李杨毕永浩王政伟赵福帅
Owner TSINGHUA UNIV
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