Surface Modification of Aluminum by Laser Alloying with TiO2 Powder.

• AKANUMA Masanobu

  Hokkaido Industrial Research Institute

• TANAKA Hiroyuki

  Hokkaido Industrial Research Institute

• TAKAHASHI Yoshimi

  School of Eng., Hokkaido Univ.

• SHIBATA Takayuki

  School of Eng., Hokkaido Univ.

• MAKINO Eiji

  School of Eng., Hokkaido Univ.

• IKEDA Masayuki

  School of Eng., Hokkaido Univ.

Bibliographic Information

Other Title

• ＴｉＯ２粉末を用いたレーザアロイングによるアルミニウムの表面改質
• TiO2 フンマツ オ モチイタ レーザアロイング ニ ヨル アルミニウム ノ ヒョウメン カイシツ

Abstract

The aluminum surface was modified by CO₂ laser beam irradiation onto a surface coated 0.2mm thick with TiO₂ powder. Surface and cross sectional views of melted layers formed under different laser irradiating conditions were observed by optical microscope. Cross-sectional hardness was evaluated by micro-Vickers hardness measurement, and the composition was studied by microdiffraction analysis. A hard alloyed layer formed on the surface of the Al substrate at laser power exceeding 2kW. At less than 2kW, a clad layer formed. The alloyed layer consists of eutectic Al+Al₃Ti. Hardening in the alloyed layer is caused by crystallization of the Al₃Ti intermetallic compound formed by a reaction between substrate Al and Ti separated from TiO₂. TiO₂ powder is thus useful in laser alloying.

Journal

• Journal of The Surface Finishing Society of Japan

  Journal of The Surface Finishing Society of Japan 50 (3), 289-293, 1999

  The Surface Finishing Society of Japan

Keywords

• Laser Alloying
• Surface Modification
• Aluminum
• TiO₂ Powder
• Intermetallic Compound

Details

• CRID: 1390282679091655168
• NII Article ID: 10002112058
• NII Book ID: AN1005202X
• DOI: 10.4139/sfj.50.289
• ISSN: 18843409
• ISSN: 09151869
• NDL BIB ID: 4677070
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4677070
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed