Preparation of Metal Coatings on Steel Balls Using Mechanical Coating Technique and Its Process Analysis

Liang Hao,Yun Lu,Takaomi Itoi,Hiroyuki Yoshida

doi:10.3390/coatings7040053

Abstract

We successfully applied mechanical coating technique to prepare Ti coatings on the substrates of steel balls and stainless steel balls. The prepared samples were analyzed by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The weight increase of the ball substrates and the average thickness of Ti coatings were also monitored. The results show that continuous Ti coatings were prepared at different revolution speeds after different durations. Higher revolution speed can accelerate the formation of continuous Ti coatings. Substrate hardness also markedly affected the formation of Ti coatings. Specifically, the substance with lower surface hardness was more suitable as the substrate on which to prepare Ti coatings. The substrate material plays a key role in the formation of Ti coatings. Specifically, Ti coatings formed more easily on metal/alloy balls than ceramic balls. The above conclusion can also be applied to other metal or alloy coatings on metal/alloy and ceramic substrates.

Highlights

Coating technology is one of the most frequently-used surface modification technologies, and has been applied in many engineering fields, including corrosion prevention [1], thermal barrier [2,3], anti-friction [4,5], stealth materials [6], etc
We could see the peaks of Ti in addition to those of Fe from the X-ray diffraction (XRD) patterns when the duration of mechanical coating diffraction peaks of Ti in addition to those of Fe from the XRD patterns when the duration of processing was increased to 4 and 8 h
This means that some Ti powder particles adhered to the surface mechanical coating processing was increased to 4 and 8 h

Summary

Introduction

Coating technology is one of the most frequently-used surface modification technologies, and has been applied in many engineering fields, including corrosion prevention [1], thermal barrier [2,3], anti-friction [4,5], stealth materials [6], etc. Other functions such as photocatalytic activity have been found in metal/alloy coatings after certain treatments including thermal oxidation [7,8], chemical oxidation [9,10], plasma electrolytic oxidation [11,12], anodic oxidation [13,14], among others. In 1995, Kobayashi developed Al and Ti-Al coatings on the substrates of stainless steel balls and ZrO2 balls [18]

Methods

Results

Conclusion