The behaviour of steel coated with TiB₂ in Sn-Ag-Cu melt

Abstract

The behaviour of TiB2 coated steel in Sn-Ag–Cu based solder melt was investigated. The samples were subjected to immersion tests in static solder melt for 40 days at 593 K. The reactions at the solder/native oxide layer covered TiB2/substrate and solder/oxide layer-free TiB2/substrate interfaces were investigated with X-ray diffraction, secondary neutral mass spectrometry, X-ray photoelectron spectroscopy, scanning electron microscopy and energy dispersive spectroscopy. The thermodynamic background of possible reactions is also presented. It was found that neither oxide covered, nor oxide layer-free TiB2 showed any observable reaction with the Sn-Ag–Cu solder melt.

Boride Coatings on Steel Protecting it Against Corrosion by a Liquid Lead-Free Solder Alloy

“…Protecting and modifying the surface of the soldering tool is a much more viable method. [17,18] The use of thermochemical heat treatments to protect soldering tools is a possible new, but less investigated, solution. Among other things, boriding is one such treatment where the surface of a steel substrate is enriched with boron, thus forming iron borides (FeB, Fe 2 B) on the surface.…”