A kind of chromium aluminum alloy target material and its preparation method and application

Abstract

The invention discloses a chromium-aluminum alloy target as well as a preparation method and an application thereof and relates to an intermetallic compound alloy target. The chromium-aluminum alloy target comprises the following components in percentage by weight: 50-80% of chromium and 20-50% of aluminum. The preparation method comprises the following steps: mixing chromium powder with aluminum powder to obtain a chromium-aluminum mixed material; putting the chromium-aluminum mixed material in a nitrogen protective atmosphere to be pressed to n electrodes; welding every two electrodes pressed to chromium-aluminum smelting electrodes; smelting the chromium-aluminum smelting electrodes for the first time to a chromium-aluminum first ingots; de-heading and removing tail of the chromium-aluminum first ingots, and welding every two chromium-aluminum first ingots to chromium-aluminum secondary smelting electrodes; smelting the chromium-aluminum secondary smelting electrodes for the second time to obtain chromium-aluminum secondary ingots; carrying out hot forging on the chromium-aluminum secondary ingots; thermally treating the hot-forged chromium-aluminum secondary ingot, and then air-cooling and cooling, and processing the required chromium-aluminum alloy target according to dimension of the target. The chromium-aluminum alloy target can be applied to manufacturing products in the fields of bathrooms, household appliances, automobiles and the like.

Description

technical field [0001] The invention relates to an intermetallic compound alloy target, in particular to a chromium-aluminum alloy target and its preparation method and application. Background technique [0002] Chinese patent 201310088743 discloses a production method of a chromium-aluminum alloy target, which includes (1) mixing chromium powder and aluminum powder in a V-type mixer; (2) placing the powder in a cold isostatic pressing bag In the sleeve, vacuumize and seal, press for 10-20min, and then place in a vacuum self-propagating high-temperature synthesis furnace for self-propagating reaction to obtain foamy chromium-aluminum alloy; (3) crush the alloy into -200 mesh alloy powder, Place in a cold isostatic pressing sheath for pressing to obtain a chrome-aluminum alloy billet; (4) place the alloy billet in a steel ladle for vacuum degassing treatment, and then conduct hot isostatic pressing sintering to obtain a chromium-aluminum alloy billet Ingot billet, (5) machin...

AI Technical Summary

Problems solved by technology

[0004] At present, in the surface treatment and decoration industry, the substrate is first sprayed with primer, then PVD chrome or aluminum, and finally sprayed with topcoat, and the color is mixed in the topcoat to obtain the same color as the existing electroplated bright chrome. PVD chrome plating is used. After spraying paint, the appearance color of the product can only be: L*=72~75, A*=-0.5~0.5, B*=-0.5~0.5 (L* means black and white, 0 is black, 100 is white, Between 0 and 100 is black; A*: positive value means red, negative value means green; B*: positive value means yellow, negative value means blue); while PVD is aluminum-plated, and then sprayed with paint, the product’s Appearance color can be controlled: L*=84~86, A*=-0.5~0.5, B*=-0.5~0.5, which is consistent with the color of electroplated bright chrome, but it has the following problems, 1) Products with different shapes On the surface, especially for 3D products, the thickness of the spray paint is different, which makes the color difference exist, which makes the product look colorful; 2) PVD aluminum plating, due to the poor corrosion resistance of aluminum, leads to the final product Poor corrosion resistance, can only meet the standards with very low corrosion resistance requirements, such as CASS4h, AASS24h; far from meeting the normal corrosion resistance functional requirements of the market