Experimental investigations of TB2 alloy by pack boriding with rare-earth oxides

ABSTRACT

An orthogonal test with four factors, namely temperature, time, type of rare-earth oxides (REOs) and REO content, was performed to obtain the optimised boriding parameters of TB2 alloy by pack boriding with REOs. It is found that temperature has the strongest effect on the boride layer thickness, while time has the strongest effect on the surface hardness and coefficient of friction. The optimum parameters for pack boriding of TB2 alloy with REO are a temperature of 1373 K, a time of 20 h, La₂O₃ as the REO with a content of 4 wt.%.

KEYWORDS:

• Metals and alloys
• surfaces
• thin films
• pack boriding
• TB2 alloy

Additional information

Funding

This work was supported by Student Extracurricular Academic Science and Technology Innovation Fund of Kunming University of Science and Technology [Grant Number 2018BA092] and by National Natural Science Foundation of China [Grant Number 51761023].