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A kind of process of coating CuO film on the surface of cubic boron nitride

A cubic boron nitride, thin film technology, applied in liquid chemical plating, metal material coating process, coating and other directions, can solve the problems of low CBN abrasive holding force and short service life of grinding wheel, and achieve good wettability, Extended service life, small grain size effect

Active Publication Date: 2018-12-18
江苏华东砂轮有限公司
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  • Abstract
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Problems solved by technology

[0003] The object of the present invention is to provide a kind of technology that adopts sol-gel method to plate CuO film on the surface of CBN abrasive, the CBN abrasive after coating can produce good combination with bronze metal bonding agent, solves the problem of metal bonding proposed in the above-mentioned background technology. CBN grinding wheel bond has low holding force on CBN abrasives, and the service life of the grinding wheel is short

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  • A kind of process of coating CuO film on the surface of cubic boron nitride
  • A kind of process of coating CuO film on the surface of cubic boron nitride
  • A kind of process of coating CuO film on the surface of cubic boron nitride

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Embodiment 1

[0020] see figure 1 , in an embodiment of the present invention, a process for coating a CuO film on the surface of cubic boron nitride comprises the following steps:

[0021] (1) Carry out surface treatment to CBN abrasive: first CBN abrasive is immersed in the NaOH solution that temperature is 40 ℃, concentration is 1mol / L, carries out activation treatment to the surface, treatment time is 1.5 hours, then rinses abrasive surface with deionized water, Until the pH of the cleaning solution is 7.0, finally use ultrasonic waves with a frequency of 60KHz to clean the surface of the abrasive in an anhydrous ethanol medium for 0.5 hours, and dry the cleaned CBN abrasive at 60°C for use.

[0022] (2) Preparation of CBN abrasives coated with CuO film on the surface: in chemically pure Cu(OEt) 2 Add analytically pure triethanolamine to the solution, Cu(OEt) 2 The volume ratio with triethanolamine is 100:1, the mixed solution is stirred at a high speed at 6000 rpm for 1 hour, and the...

Embodiment 2

[0024] see figure 1 , in an embodiment of the present invention, a process for coating a CuO film on the surface of cubic boron nitride comprises the following steps:

[0025] (1) Surface treatment of CBN abrasives: First, CBN abrasives are immersed in a NaOH solution with a temperature of 50°C and a concentration of 1mol / L, and the surface is activated for 1 hour, and then the surface of the abrasives is rinsed with deionized water. Until the pH of the cleaning solution is 7.5, finally use ultrasonic waves with a frequency of 40KHz to clean the surface of the abrasive in an anhydrous ethanol medium for 1.5 hours, and dry the cleaned CBN abrasive at 60°C for use.

[0026] (2) Preparation of CBN abrasives coated with CuO film on the surface: in chemically pure Cu(OEt) 2 Add analytically pure triethanolamine to the solution, Cu(OEt) 2 The volume ratio with triethanolamine was 100:1, and the mixed solution was stirred at 2000 rpm for 1.5 hours, and then to Cu(OEt) under high-sp...

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Abstract

The invention discloses a technology of plating the surface of cubic boron nitride with a CuO film. The technology comprises the steps that Cu(OEt)2 is adopted as an organic precursor, ammonium hydroxide is dropwise added into the mixed liquid of Cu(OEt)2 and triethanolamine, the Cu(OEt)2 is subjected to controlled hydrolysis, and stable Cu(OH)2 sol is prepared; the Cu(OH)2 sol is used for dipping a surface-treated CBN grinding material, the grinding material is tanked out of sol, dried, roasted at the specified temperature, screened and selected, and the CBN grinding material with the surface evenly plated with the CuO film is obtained. By means of the CuO film, the wettability of the CBN grinding material and a metal bonding agent can be improved, the holding force of the metal bonding agent for the CBN grinding material is improved, and the service life of a CBN metal grinding tool is prolonged.

Description

technical field [0001] The invention relates to a CBN (cubic boron nitride) abrasive surface modification technology, in particular to a process for coating a CuO film on the surface of cubic boron nitride by using a sol-gel method. Background technique [0002] CBN is second only to diamond in hardness among all materials, so it is often used to prepare processing tools. However, the artificially synthesized CBN is mainly in the form of granules and powders, which must be combined with a material called a binder and prepared into a tool with a certain shape and strength. Commonly used binder materials are metals, resins and ceramics. Among them, the metal-bonded cubic boron nitride grinding wheel has the characteristics of high elastic modulus, stable chemical properties, water resistance, heat resistance, strong impact resistance, stable quality, etc., and is especially suitable for forming grinding and polishing of ferrous metal materials. However, compared with the com...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C18/12C23C18/04
CPCC23C18/04C23C18/1216C23C18/1245C23C18/1254C23C18/1279
Inventor 刘小磐陈瑞和
Owner 江苏华东砂轮有限公司
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