Category: Surface Hardening

Applied Process and others to begin doing business as Aalberts surface technologies

Applied Process and other U.S. based thermal processing, surface treatment businesses will begin doing business as Aalberts surface technologies.

One Minute Mentor: Maps of Wear Resistance

The images show wear maps for (a) treated and (b) nontreated 316 stainless steel. The T316 stainless steel was treated by low-temperature carburization.

One Minute Mentor: Effects of Nitrocarburizing on Stainless Steel

Electrochemical measurements show that transpassivity (which is necessary for the onset of pitting) of expanded austenite occurs at appreciably higher applied voltages than for austenite with the same metallic composition but without nitrogen.

One Minute Mentor: Hardness Depth Profiles of Stainless Steel after Nitriding and Nitrocarburizing

X-ray diffraction analysis indicates that the hardened case consists of a mixture of expanded austenite and expanded martensite.

One Minute Mentor: Nitrocarburizing in a Carrier Gas

Nitrocarburizing in a carrier gas to which (initially solid) urea was added led to a fast growth of the expanded austenite zone. The gaseous decomposition products of urea that develop in the furnace are highly activating, which means that activation and nitrocarburizing are achieved simultaneously.

One Minute Mentor: Residual Stress Profiles as Determined by X-Ray Diffraction

For nitrocarburizing or consecutive carburizing and nitriding, the typical stress profile is smoother than for nitriding only.

One Minute Mentor: Residual Stress Profiles

Residual stress profiles of nitrided austenitic AISI 316 are shown in the graph.

One MInute Mentor: X-Ray Diffraction Patterns in AISI 316

The graph shows X-ray diffraction patterns of nitrided (and carburized) stainless steel AISI 316.

One Minute Mentor: Nitrogen-Expanded Austenite

The graph shows hardness-depth profiles of nitrided AISI 316. A profile for carburizing is shown for comparison.

One Minute Mentor: Depth Profiles of Nitrided Stainless Steel AISI 316

The graph shows composition-depth profiles of nitrided stainless steel AISI 316 as determined with glow discharge optical emission spectrometry (GDOES).