US1003806A - Article composed of titanium and nickel alloyed together and method of producing the same. - Google Patents

Description

UNITED OFFICE.

AUGUSTE J. 30581, 01? NIAGARA FALLS, NEW YORK, ASSIGNOR TO Tl-IE TITANIUM ALLOY MANUFACTURING COMPANY, OF NEW YORK. N. Y., A CORPORATION OF MAINE.

. ARTICLE COMPOSED OF TITANIUM AND NICKEL ALLOYEID TOGETHER AND METHOD OF PRODUCING THE SAME.

No Drawing.

T 0 all whom it may concern:

lie it known. that I, Arctsrn J. ltossi, a citizen of the t uited States, and a resident of Niagara Falls, in the county of Niagara and State of New York, have in vented a ccrtain new and useful Article Composed of 'litanium. and Nickel Alloyed 'llogetlnaf and Method of lroducing the Same, of which the following is a specification.

[t has heretofore been regarded as in'ipossible to produce'the binary alloy of titanium with nickel, and the object of my invention is to produce such alloy and to provide meth- .ods for its prtuluction so simple. economical and reliable as to justify manufacture thereof on industrial scales. jects as hereinafter described.

It has been asserted heretofore that because of the much higher melting-point of titanium as compared with that of nickel itwas impossible to produce a binary alloy of said metals since titanium added to molten nickel would chill and segregate. I have discovered lu'nvevcr that the binary alloy of titanium and nickel is producible provided the titanium is brought in nascent state into the presence of the nickel previously reduced to molten state so as to constitute a hath forthe reception of the titanimn on its reduction from an oxid thereof.

Alto of ferric metals, 1'. c. iron and steel with nickel have by now, as well known, at; tained a position of recognized high utility in the. arts as for instance under the designation of. nickel steels. Such alloys are produced by adding to a ferric metal any th sired percentage of nickel and melting the two together.

The ferric metal and also the" nickel contain impurities, being undesired elements and compounds including slags, etc, which it is desirable should if possible be climinat'ed. Titanium in quantity proportioned to satisfy the chemical atlinities of such undesired elements and compounds is as l have heretofore discovcrtal etlicient to insure their removal when added to the ferric hath containing them as an alloy of titanium with ferric metal; I have now discovered that: the etticiency of titanium in the particular mentioned is not. impaired by its association with nickel in'alloy therewith, and therefore my said novel alloy is of important utility in attain these ob-.

Specification of Letters Patent.

Application filed January 6, 1911. Serial No. 601,165.

Patented Sept. 19, 1911.

that by its addition to baths ofmoltcn ferric metalnot only is nickel alloyed with the latter but also both metals and their resulting allpy sinmltaneoi'lsly purified by the tita nium. Moreover my novel alloy is also particularly useful to so purify molten nickel intended for use by itself alone for other applications in the arts.

My novel alloy of titanium with nickcl'l produce as follows :-I charge into a graphite crucible or other container properly tttltlptltl. nickel, titanic acid, and preferably an oxid of nickel, also such an amount of aluminium (preferably in shots or the like so as to melt more rapidly) as is chemically sutlicient to decompose the oxid of titanium and also the oxid of nickel, and reduce their respective titanium and nickel contents to their metallic states. This mixture is then heated, as preferably in any of the well known forms of so called electric furnaces, or otherwise, to a temperature sutliciently high to insure the melting of the .n'ietallic element of the charge and the taking place of the required reactions as hereinafter noted. The molten product on being withdrawn and cooled will be found to'be an alloy of titanium with nickel, the percentage of the former being proportional to the amounts of titanic i acid and aluminium charged, the reactions being as per the following formula,-assuming that the oxid of nickel designated as NiO is employed.

Whil in this instance the n-esence of an ()Xtl of nickel is not absolutely essential it nevertheless promotes considerably the reactions desired in the charge and accelerates its fusion into a homogeneous metallic alloy, the heat of the formation ot such oxid being so much less than that. of the oxid of titanium as to leave available a considerable excess of heat due exothermally to the cmnbination of its oxygen with part of the aluminium of the bath. In this manner an alloy of nickel with ti tanium containing any (lLrdlPtl percent-age of titanium may be prot luced. Moreover such use of an oxid of nickel, or even its substitution entirely for the metal in said process, is st.nnetimes economically desirable, the cost of such oxid being usually less than that of the metal, and such entire substitution being possible in the produc-' tion of my said alloy by my said process. I have also discovered that my said alloy of nickel with titanium may, in some instances, be advantageously produced by substituting carbon for aluminium as the reducing agent, in which. case it is essential in industrial practice to employ the higher temperatures derivable for instance from some of the now well known forms of so-called electric furnaces, such for example as illustrated and described in Letters Patent No. 802,941 granted to me October 4, 1905. In this case o-xid of nickel, oxid of titanium, and carbon are mixed together as for instance as per the formula 01' the ingredients used in the charge will be varied according to the percentage of the respective metals desired in the alloy according to the formulas above given and as experience and test in each case will readily demonstrate to those skilled in the metallurgical art.

What I claim as new and desire to secure by Letters Patent is the following, viz

1. As a new article an alloy of titanium with nickel.

2. The process of producing an alloy of titanium with nickel which comprises in corporating titanic acid into a bath' of molten nickel in presence of a reducing agent, subjecting the bath to a temperature sufiicient' to insure reduction of said titanic acid by said agent, and withdrawing and cooling the resulting metallic product.

3. The method of producing an alloy of nickel with titanium which comprises incorporating titanic acid into a bath comprising molten nickel and molten aluminium, subjecting the bath to a temperature sutlicient to insure reduction of said titanic acld by said aluminium and withdrawing and cooling the resulting metallic product.

AUGUSTE J. RossI. WVitnesses WALTER D. EDMONDS, GEORGE G. MEAsUREs.