Modified ball bond shear test for determination of adhesion strength of cold spray splats

SURFACE & COATINGS TECHNOLOGY

卷:205

Article; Proceedings Paper

Chromik, Richard R.¹  Goldbaum, Dina¹  Shockley, J. Michael¹  Yue, Stephen¹  Irissou, Eric²  Legoux, Jean-Gabriel²  Randall, Nicholas X.³ 

[1] McGill Univ, Dept Min & Mat Engn, Montreal, PQ H3A 2B2, Canada

[2] Natl Res Council Canada, Inst Ind Mat, Boucherville, PQ J4B 6Y4, Canada

[3] CSM Instruments, Needham, MA 02494 USA

关键词: Cold spray;    Adhesion strength;    Titanium;   

DOI  :  10.1016/j.surfcoat.2010.07.037

来源: Elsevier

【 摘 要 】

A modified ball bond shear test was developed to measure the adhesion of cold sprayed splats to both bulk substrates and cold sprayed coatings. The technique was applied to the deposition of Ti feedstock powder (spherical morphology, 29 mu m average dia.) onto a commercially pure bulk Ti plate and onto Ti coatings prepared with the same feedstock powder. Both an adhesion strength and adhesion energy were measured, with trends in adhesion examined as a function of in-air particle velocities between 580 and 825 m/s. Comparisons between cold spray splat on bulk materials versus coatings were conducted for two deposition conditions (694 and 825 m/s). Generally, the adhesion for splats deposited at the higher deposition condition were insensitive to the substrate material, while splats deposited at the lower deposition condition adhered better to the bulk material than to the coatings. Crown Copyright (C) 2010 Published by Elsevier B.V. All rights reserved.

【 授权许可】

Free