Laser surface nitriding and texturing of NiTi shape memory alloy for bonding with bioactive glass

Hau Chung Man, Z. D. Cui, Tai Man Yue

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

Laser surface nitriding of equi-atomic NiTi shape memory alloy has been carried out using a 2kW Nd-YAG laser. A continuous TiN layer on the top of the laser surface alloyed layer was formed on the surface of the NiTi alloy. The LSA layer consisted of dendrites of TiN and NiTi matrix. By subsequent selective etching technique, a network full of three-dimensional TiN dendrites protruding from the surface was obtained. Silicate glass was then sintered on this network and a crack free interfacial layer composed of Si, O, Ti and Ni can be obtained. This interfacial layer can be used to improve the interfacial bonding between the ceramic coating and the NiTi alloy.
Original languageEnglish
Title of host publicationICALEO 2002 - 21st International Congress on Applications of Laser and Electro-Optics, Congress Proceedings
Publication statusPublished - 1 Dec 2002
EventICALEO 2002 - 21st International Congress on Applications of Laser and Electro-Optics - Scottsdale, AZ, United States
Duration: 14 Oct 200217 Oct 2002

Conference

ConferenceICALEO 2002 - 21st International Congress on Applications of Laser and Electro-Optics
Country/TerritoryUnited States
CityScottsdale, AZ
Period14/10/0217/10/02

Keywords

  • Ceramic
  • Interfacial bonding
  • Laser surface nitriding
  • NiTi
  • Shape memory alloy

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Electrical and Electronic Engineering

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