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Title: Abrasion resistant heat pipe

A specially constructed heat pipe is described for use in fluidized bed combustors. Two distinct coatings are spray coated onto a heat pipe casing constructed of low thermal expansion metal, each coating serving a different purpose. The first coating forms aluminum oxide to prevent hydrogen permeation into the heat pipe casing, and the second coating contains stabilized zirconium oxide to provide abrasion resistance while not substantially affecting the heat transfer characteristics of the system.
Authors:
Publication Date:
OSTI Identifier:
7260353
Report Number(s):
US 4478275; A
PPN: US 6-516631
DOE Contract Number:
W-31109-ENG-38
Resource Type:
Patent
Resource Relation:
Patent File Date: 25 Jul 1983
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; 42 ENGINEERING; FLUIDIZED-BED COMBUSTORS; HEAT PIPES; CORROSION PROTECTION; PROTECTIVE COATINGS; WEAR RESISTANCE; ALUMINIUM OXIDES; HYDROGEN EMBRITTLEMENT; MITIGATION; SPRAY COATING; ZIRCONIUM OXIDES; ALUMINIUM COMPOUNDS; CHALCOGENIDES; COATINGS; COMBUSTORS; DEPOSITION; EMBRITTLEMENT; MECHANICAL PROPERTIES; OXIDES; OXYGEN COMPOUNDS; SURFACE COATING; TRANSITION ELEMENT COMPOUNDS; ZIRCONIUM COMPOUNDS 014000* -- Coal, Lignite, & Peat-- Combustion; 420400 -- Engineering-- Heat Transfer & Fluid Flow