Materials Research Activities

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Feb 20, 1917 

Preparation of films from cellulose ethers
L. Lilienfeld describes the preparation of films from cellulose ethyl ether or other cellulose ethers by dissolving in alcohol or benzene, filtering, and then pouring or spreading the solution. The process may also be used to produce an artificial silk.
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May 24, 1917 

Patent for aluminum-zinc-magnesium alloys
W. Guertler and W. Sander receive a patent disclosing the high strength obtainable by the heat treatment of wrought aluminum-zinc- magnesium alloys.
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Jul 10, 1917 

Aircraft construction fabric
H. Dreyfus develops a transparent fabric for use in the construction of aircraft, etc., comprising cellulose acetate reinforced with a metallic fabric of some kind, preferably a mesh.
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Jul 16, 1917 

Dope for fabrics for balloons and aircraft purposes
A. Flatters' dope for fabrics for balloons and other aircraft purposes is made of the following: casein, borax, soap, glycerol and water. When dry, a coating composed of a solution of commercial anime gun is applied as a fireproof finish.
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Aug 01, 1917 

Patent for a new material
A composition consisiting of cork fragments and a solution of casein in water with borax, lime silicate or waterglass, castor oil, and tannic acid is patented by N.A.T.N. Feary.
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Aug 28, 1917 

New airplane varnish
S.E. Graves and T.W.H. Ward devise a varnish for airplanes consisiting of a solution of cellulose ester and acetone.
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Nov 27, 1917 

New material to join woodwork
Hydrolyzed starch mixed with alum and sodium hydroxide to form sodium aluminate in the starch is used to join woodwork or veneering, according to a patent issued to R.W. Tunnell.
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Feb 05, 1918 

Patent for adding oleic acid to mineral oils
J.E. Southcombe and H.M. Wells receive a patent for the addition of oleic acid to mineral oils.
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Heat-treatment by duralumin age-hardening
P.D.Merica, R.G. Waltenberg, and H. Scott, National Bureau of Standards, explain the heat-treatment phenomena exhibited by duralumin age-hardening caused by the formation of sub-microscopic particles of an inter-metallic compound from the supersaturated solid solution.
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Apr 08, 1919 

Resins added to paper/cloth
J.R. McLain impregnates thin cloth or paper with phenol- formaldehyde resins, using pressure to consolidate.
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May 15, 1919 

Airplane non-conducting flexible fabric developed
N.A.T.N. Feary develops an airplane non-conducting flexible fabric provided with an electrically depositied metallic coating for fireproofing and strengthening. The fabric is saturated in boiling linseed oil under pressure, dried, coated with plumbago, and passed in contact with conductors through a copper sulphate solution.
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Jul 16, 1919 

Report on specific gravity vs. strength of wood
J.A. Newton and T.R.C. Wilson report the findings of the Forest Products Laboratory on the nature of the relations between the specific gravity or density of a wood and its strength properties.
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Dec 01, 1919 

Alpha iron is body-centered cubic
A.W. Hull shows the lattice of alpha iron to be body- centered cubic.
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X-ray spectroscopic investigations of cellulose
R.O. Herzog and W. Jancke conduct X-ray spectroscopic investigations of cellulose.
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Jun 01, 1920 

Oleic acid can lower coefficient of friction
Irving Langmuir demonstrates that a monolayer of oleic acid is sufficient to lower the coefficient of friction of rubbing solids to only 0.1.
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Jul 01, 1920 

High purity zirconium powder produced
J.W. Marden and M.N. Rich, Bureau of Mines, produce a zirconium powder of high purity by reducing potassium fluozirconate with aluminum and then distilling out (in vacuo) the resulting low-aluminum alloy.
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Aug 01, 1920 

Austenitic chromium-nickel steels
B. Strauss and E. Maurer, Krupp, announce the commercial possibilities of austenitic chromium-nickel steels.
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Oct 28, 1920 

New varnish for airplane fabrics
D.M. Sutherland forms a varnish for airplanes fabrics of 6- 12 parts acetylcellulose, 36-44 parts acetone, 24 parts benzene, 24- 25 parts "borated benzen," and 2-3 parts benzyl alcohol.
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Y-alloy of aluminum investigated
W. Rosenhain, S.L. Archbutt, and D. Hanson investigate the Y-alloy of aluminum, which contains 4% copper, 2% nickel, 1.5% magnesium.
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Ductility of molybdenum shown temperature-sensitive
W.P. Sykes demonstrates that the ductility of molybdenum is very temperature-sensitive, an abrupt transition from ductile to brittle taking place near room temperature, depending markedly on the thermal and mechanical history of the sample.
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