Advanced Dry Gas Seal By The Dynamic Ion Beam Mixing Technique.
Abstract
Ductile materials have been used for dry gas seal mating rings to
replace conventional sintered materials that have experienced
occasional brittle fracture. The ductile materials require a coating
to make them suitable for dry gas seal designs.
This paper describes the dynamic ion beam mixing (DM)
technique as an improvement in coating technology. Excellent
tribological properties of thin titanium nitride (TiN) films formed
by the dynamic ion beam mixing technique (DM/TiN) are
demonstrated. Further, performance of a dry gas seal provided with
a mating ring comprising a martensitic stainless steel substrate,
having a DM/TiN coating formed thereon, is demonstrated, while
making a comparison with the performance of a dry gas seal
utilizing conventional materials. Considerations necessary for
designing the ductile mating ring, its durability under abnormal
and severe conditions, testing of the DM coating, and results of
field experience are also discussed, together with problems
accompanying the use of ductile materials.
Description
LecturePg. 39-48
Subject
TurbomachinesCollections
Citation
Takeuchi, Takao; Kataoka, Tadashi; Nagasaka, Hiroshi; Katutani, Momoko; Ito, Masanobu; Muraki, Ryoji (1998). Advanced Dry Gas Seal By The Dynamic Ion Beam Mixing Technique.. Texas A&M University. Turbomachinery Laboratories. Available electronically from https : / /hdl .handle .net /1969 .1 /163414.