PDF/Textbook High Temperature Oxidation Of Alpha Nickel Silicon Alloys Full Download

Scientific and Technical Aerospace Reports

Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 956

Book Description

High Temperature Oxidation and Corrosion of Metals

Author: David John Young
Publisher: Elsevier
ISBN: 008044587X
Category : Business & Economics
Languages : en
Pages : 593

Book Description
The book is concerned with understanding the fundamental mechanisms of high temperature alloy oxidation. It uses this understanding to develop methods of predicting oxidation rates and the way they change with temperature, gas chemistry and alloy composition. The focus is on designing (or selecting) alloy compositions which provide optimal resistance to attack by corrosive gases. . Emphasises quantitative calculations for predicting reaction rates and the effects of temperature, oxidant activities and alloy compositions. . Uses phase diagrams and diffusion paths to analyse and interpret scale structures and internal precipitation distributions . Provides a detailed examination of corrosion in industrial gases (water vapour effects, carburisation and metal dusting, sulphidation) . Text is well supported by numerous micrographs, phase diagrams and tabulations of relevant thermodynamic and kinetic data . Combines physical chemistry and materials science methodologies.

High-temperature Oxidation of Alpha Nickel-silicon Alloys

Author: J. L. Cocking
Publisher:
ISBN: 9780642123619
Category : Metallography
Languages : en
Pages : 19

Book Description
The subject of this report is the metallography of a series of nickel and nickel-silicon alloys which have been isothermally oxidized at 1373k in static air for up to 164h. The aim of the study was to determine the mechanisms of oxidation that produced the morphology and microstructures of these oxidized alloys. Pure nickel, after surface preparation by tumbling, oxidizes by outward lattice diffusion of nickel cations and inward gain boundary and other short circuit path diffusion of oxygen. Gain boundary oxides accounted for about 15% of the total weight gained by nickel during oxidation. Additions of 1% and 2% Si to nickel decreased the oxidation rate compared with pure nickel by reacting with the inwardly diffusing oxygen to prevent it diffusing deeply down the grain boundaries of the alloys (the major effect) and by retarding the outward flow of nickel cations (the minor effect). The 3%, 4% and 5% Si alloys form external oxides and oxidize at markedly slower rates than the alloys with lower concentrations of silicon. While the formation of Silicon dioxide significantly decreases the isothermal oxidation rate it also causes the oxide scale to spall upon cooling because of the difference in thermal expansion coefficients between silicon dioxide and the alloys. Under cyclic oxidation conditions, externally oxidizing NiSi alloys will not be protective unless alloy additions are made to improve the adherence of the oxide scale. Keywords: Heat resistant alloys.

Lifetime Modelling of High Temperature Corrosion Processes

Author: Michael Schütze
Publisher: CRC Press
ISBN: 9781902653471
Category : Science
Languages : en
Pages : 0

Book Description
This book contains papers presented at a workshop held in Frankfurt am Main, Germany in February 2001. The sections include papers on: alumina formers; iron oxide and chromia formers; composites and coatings; thermal barrier systems; and general lifetime prediction approaches.

Scientific and Technical Aerospace Reports

High Temperature Oxidation and Corrosion of Metals

High-temperature Oxidation of Alpha Nickel-silicon Alloys

Lifetime Modelling of High Temperature Corrosion Processes

NBS Monograph

Corrosion Tests and Standards

Gases and Carbon in Metals

Nuclear Science Abstracts

Metallic Materials Specification Handbook

Corrosion Abstracts