CN100362129C

CN100362129C - Technique for compositely coating Ni-B-nanometer TiO2 chemically

Info

Publication number: CN100362129C
Application number: CNB2005100968494A
Authority: CN
Inventors: 钟福新; 高建华
Original assignee: Guilin University of Technology
Current assignee: Guilin University of Technology
Priority date: 2005-09-09
Filing date: 2005-09-09
Publication date: 2008-01-16
Anticipated expiration: 2025-09-09
Also published as: CN1737196A

Abstract

The present invention discloses a technical method for the chemical complete plating of Ni-B-nanometer TiO2, which comprises: nanometer TiO2 powder is added into mixed liquor of 30 g/L of NiCl2.6H2O30, 6 g/L of citric acid, 5 g/L of glycine, 12 g/L of tartaric acid, 0.5 g/L of KBH4 as reducing agents and 2.5 mg/L of Pb(NO3)2 as stabilizing agents to make the concentration of the mixed liquor reach 0.8 to 1.2 g/L, and pH is regulated to 12.5 to 13; after ultrasonic waves are adopted to disperse TiO2 for 20 to 30 min, plating is carried out in constant temperature water bath at 70 to 80 DEG C under a mechanical stirring condition, and the plating is kept for 30 min to obtain a Ni-B-nanometer TiO2 composite plate whose erosion resisting performance and high-temperature oxidation resisting performance are better than those of Ni-B.

Description

Ni-P Ni-B-nano-TiO 2Processing method

Technical field

The present invention relates to a kind of Ni-P Ni-B-nano-TiO ₂Processing method.

Background technology

Ni alloy nano composite deposite kind has the Ni-P-nano-TiO ₂Ni-P, Ni-P-SiC (nanometer) Ni-P, Ni-P-SiC-PTFE chemical composite plating; And the Ni-B alloy has unique physical and mechanical property owing to it, and under the same conditions, its hardness and wear resistance surpass hard chrome, thereby more and more are subject to people's attention.TiO ₂Powder forms focus into people's research with its good resist chemical and characteristic such as anti-oxidant.But be applied to the Ni-B-nano-TiO ₂The research of composite deposite still is not reported.

Summary of the invention

The purpose of this invention is to provide a kind of Ni-P Ni-B-nano-TiO ₂Processing method.

Processing method of the present invention is: at NiCl ₂6H ₂O 30g/L, citric acid 6g/L, glycine 5g/L, tartrate 12g/L, reductive agent KBH ₄0.5g/L, stablizer Pb (NO ₃) ₂2.5mg/L mixed solution in add nano-TiO ₂Powder makes its concentration reach 0.8～1.2g/L, transfers pH=12.5～13, adopts ultrasonic dispersing TiO ₂Behind 20～30min, under the mechanical stirring condition in 70 ℃～80 ℃ waters bath with thermostatic control plating 30min, can obtain even, bright Ni-B-nano-TiO ₂Composite deposite.

The present invention compares with other correlation technique, and outstanding feature is to utilize compound coating technology, has added nano-TiO in Electroless Plating Ni-B basal liquid ₂Powder carries out Ni-P under above-mentioned processing condition, can obtain solidity to corrosion and high-temperature oxidation resistance all than the Ni-B-nano-TiO of Ni-B excellence ₂Composite deposite.

Embodiment

Embodiment 1

Basis electroplate liquid formulation: NiCl ₂6H ₂O 30g/L, citric acid 6g/L, glycine 5g/L, tartrate 12g/L, KBH ₄0.5g/L overall solution volume is 100mL.

In basic plating bath, add the 0.1g nano-TiO ₂Powder, after in DL-720A type ultrasonic cleaner, disperseing 20min, transfer pH value of solution=12.5, be placed in 70 ℃ of waters bath with thermostatic control, plating 30min under CL-3 type constant temperature blender with magnetic force at the uniform velocity stirs promptly obtains on the copper base evenly, light, solidity to corrosion and high-temperature oxidation resistance be all than the Ni-B-nano-TiO of Ni-B excellence ₂Coating.

Embodiment 2

Basis electroplate liquid formulation: NiCl ₂6H ₂O 30g/L, citric acid 6g/L, glycine 5g/L, tartrate 12g/L, KBH ₄0.5g/L overall solution volume is 200mL.

In basic plating bath, add the 0.24g nano-TiO ₂Powder, after in DL-720A type ultrasonic cleaner, disperseing 25min, transfer pH value of solution=13, be placed in 75 ℃ of waters bath with thermostatic control, plating 30min under CL-3 type constant temperature blender with magnetic force at the uniform velocity stirs promptly obtains on the copper base evenly, light, solidity to corrosion and high-temperature oxidation resistance be all than the Ni-B-nanometer-TiO of Ni-B excellence ₂Coating.

Embodiment 3

Basis electroplate liquid formulation: NiCl ₂6H ₂O 30g/L, citric acid 6g/L, glycine 5g/L, tartrate 12g/L, KBH ₄0.5g/L overall solution volume is 150mL.

In basic plating bath, add the 0.14g nano-TiO ₂Powder, after in DL-720A type ultrasonic cleaner, disperseing 30min, transfer pH value of solution=13 to be placed in 80 ℃ of waters bath with thermostatic control, plating 30min under CL-3 type constant temperature blender with magnetic force at the uniform velocity stirs promptly obtains on iron-based evenly, light, solidity to corrosion and high-temperature oxidation resistance be all than the Ni-B-nano-TiO of Ni-B excellence ₂Coating.

Claims

1. Ni-P Ni-B-nano-TiO ₂Processing method, it is characterized in that processing method is: at NiCl ₂6H ₂O 30g/L, citric acid 6g/L, glycine 5g/L, tartrate 12g/L, reductive agent KBH ₄0.5g/L, stablizer Pb (NO ₃) ₂2.5mg/L mixed solution in add nano-TiO ₂Powder makes its concentration reach 0.8～1.2g/L, transfers pH=12.5～13, adopts ultrasonic dispersing TiO ₂Behind 20～30min, under the mechanical stirring condition in 70 ℃～80 ℃ waters bath with thermostatic control plating 30min, can obtain even, bright Ni-B-nano-TiO ₂Composite deposite.