Aluminum or aluminum alloy surface nanoscale treatment process

Abstract

The invention provides an aluminum or aluminum alloy surface nanoscale treatment process. The aluminum or aluminum alloy surface nanoscale treatment process includes the following steps that firstly, aluminum or aluminum alloy is placed in a sulfuric acid solution with the 190 g / L concentration, temperature is kept at 18-22 DEG C, voltage is kept at 17.5 V, and oxidation is conducted for 12-15 minutes; secondly, washing is conducted twice; thirdly, the aluminum or aluminum alloy is placed in a stain remover with the 160 ml / L concentration and the 9-11 PH and immersed for 5-7 minutes at normal temperature; fourthly, washing is conducted twice; fifthly, the aluminum or aluminum alloy is placed in a pore-expanding agent with the 400 ml / l concentration and the 9-11 PH and immersed for 5-7 minutes at normal temperature; sixthly, washing is conducted twice; seventhly, the aluminum or aluminum alloy is placed in a binding agent with the 300 ml / L concentration and the 9-11 PH and immersed for 5-7 minutes at normal temperature; eighthly, washing is conducted twice; and ninthly, the aluminum or aluminum alloy is dried for 10 minutes at the temperature of 65 DEG C. Surface pores of the prepared aluminum or aluminum alloy are uniform, and excellent micro-pore-expanding property and strong viscosity are achieved. When the aluminum or aluminum alloy prepared through the process is subjected to a next injection molding procedure, the binding force of the aluminum or aluminum alloy and plastic particles is extremely strong, firmness is greatly improved, and the drawing force is strong.

Description

technical field [0001] The invention relates to the technical field of material surface treatment, in particular to a nanoscale treatment process for the surface of aluminum or aluminum alloy. Background technique [0002] In recent years, in the development of metal grade composite materials, aluminum or aluminum alloy composite materials have the characteristics of light weight, small thermal expansion, high thermal stability, excellent electrical conductivity and thermal conductivity, which make them develop particularly rapidly. [0003] In order to improve the bonding strength of aluminum or aluminum alloy surface attachments, it is usually necessary to treat the surface. The traditional method is to use phosphating and passivation methods, and to corrode the metal surface by soaking in chemical solutions to achieve immediate The purpose of protecting the metal surface and creating the surface to improve the bonding strength of nano-scale aluminum or aluminum alloy and ...

AI Technical Summary

Problems solved by technology

[0003] In order to improve the bonding strength of aluminum or aluminum alloy surface attachments, it is usually necessary to treat the surface. The traditional method is to use phosphating and passivation methods, and to corrode the metal surface by soaking in chemical solutions to achieve immediate The purpose of protecting the metal surface and creating the surface to improve the bonding strength of nano-scale aluminum or aluminum alloy and the attachment. The rough surface obtained by these methods is uneven and irregular, which is only suitable for relatively rough and simple protection. After The aluminum or aluminum alloy treated by this method has low bonding strength between the surface and the attachment, poor firmness, and low pull-out force.