Dear Sandur,
The only nitriding treatment that can function at a temperature as low as 400°C is plasma nitriding; such a treatment was experimented in the late '70's of last century. To improve kinetics you may add some H2S that may lead to a threefold increase of top carbonitrides layer thickness. Resulting porosity is limited.
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Donato FIRRAO FASM
Professor
Politecnico di Torino
TORINO
+393351494032
Italy
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Original Message:
Sent: 04-09-2023 06:49
From: Sandur Ajith Kumar
Subject: Low Temperature ( 400 deg C ) Nitriding
I am intending to carry out Vacuum / Gas Nitriding at 400 deg C. ( Low Temperature Nitriding ). Tried once but not successful as Ammonia was not cracking. Can you please suggest suitable HT cycle and facilities ( in India or other countries ) for trying Nitriding treatment at 400 deg C ?
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Sandur Ajith Kumar
Consultant R&D
TVS Motor Company Ltd
Anekal
+919944452591
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