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Title: Plasma spraying with wire feedstock

Plasma spraying has been limited to using powder feedstocks for a number of reasons. One limitation has been the low energy output of conventional plasma guns. The advent of high energy plasma spraying (HEPS) devices and the associated technology has effectively removed this functional limitation. With HEPS, the combination of high gas velocities and high thermal plasma temperatures coupled with a large exit gas volume enables wire and rod feedstocks to be effectively utilized. Rather than a bulk melting mechanism, a model based on ablation phenomena is considered. The paper examines an analysis of melting phenomena and presents a simple model for molten droplet formation for plasma spraying using wire feedstocks.
Authors:
 [1]
  1. Oregon Graduate Inst. of Science and Technology, Portland, OR (United States)
Publication Date:
OSTI Identifier:
160491
Report Number(s):
CONF-940684--
ISBN 0-87170-509-5; TRN: IM9603%%73
Resource Type:
Conference
Resource Relation:
Conference: 1994 national thermal spray conference, Boston, MA (United States), 20-24 Jun 1994; Other Information: PBD: 1994; Related Information: Is Part Of 1994 Thermal spray industrial applications: Proceedings; Berndt, C.C.; Sampath, S. [eds.] [State Univ. of New York, Stony Brook, NY (United States). Dept. of Materials Science and Engineering]; PB: 816 p.
Publisher:
ASM International, Materials Park, OH (United States)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; INCONEL 625; PLASMA ARC SPRAYING; WIRES; LIQUID METALS; ARGON; ABLATION; VELOCITY; HEAT TRANSFER; TEMPERATURE DEPENDENCE; MATHEMATICAL MODELS; ENERGY BALANCE; DROPLETS; PREDICTION EQUATIONS