Masters Theses

Abstract

"Titanium is gaining great interest in the modern metal industry because of its natural abundance and its desirable physical and chemical properties. Among them, its excellent corrosion resistance, such as the resistance to normal atmosphere attack, humid and saline atmosphere attack, sea water attack, and nitric acid attack, is the most prominent characteristic being welcomed by the engineers. The usefulness of titanium would be greatly increased if it were possible to plate titanium on other metals, thus increasing the corrosion resistance of these other metals.

Much concern, at present, has been given to the possibilities of the electrodeposition of titanium on other metals from fused salt baths. However, it is also possible to deposit titanium on other metals without any utilization of current, that is, by depositing titanium from "pyrosols". These are obtained by immersing the metal for several hours in a molten salt bath. The titanium corrodes severely with the formation of a corrosion product known as a "pyrosol". As this method of deposition of titanium depends greatly on the composition and amount of the dispersed titanium in the molten salt bath, it is important to study the corrosion behavior of titanium and the composition of its reaction products in a fused salt bath in detail to arrive at the best method of deposition of titanium from pyrosols.

The formation of pyrosols was observed by Lorenz and his coworkers. They found that some metals (Pb, Bi, Sr, and Cd) could be colloidally dispersed in their fused salts and this dispersion was called "Metallnebel" or metal fog. In this country the investigations were continued by Cubicciotti.

The present research, therefore, was conducted to identify the titanium corrosion products which were obtained by corroding titanium samples in fused salt (NaCl) baths. A study of the influencing factors, such as temperature and time of heating, on the amount and composition of the corrosion products has been also included"--Introduction, pages 1-2.

Advisor(s)

Straumanis, Martin E., 1898-1973

Department(s)

Materials Science and Engineering

Degree Name

M.S. in Metallurgical Engineering

Comments

The author also wishes to express his appreciation for the opportunity to work on the Electrodeposition of Titanium Project conducted for the Air Force under Contract No. AF 33(616)-75·

Publisher

Missouri School of Mines and Metallurgy

Publication Date

1954

Pagination

vii, 54 pages

Note about bibliography

Includes bibliographical references (page 53).

Rights

© 1954 Kai-Chai Chiou, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Subject Headings

Titanium -- CorrosionCorrosion and anti-corrosivesFused salts -- Analysis

Thesis Number

T 1071

Print OCLC #

5919012

Electronic OCLC #

915083936

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