A micropyrometer

Abstract

Some time ago a method was described * suitable for the rapid estimation of the melting points of minute specimens-as fine as coo I milligrams or less. A microscope and an optical pyrometer were sighted through a window of mica, or of plate glass (in case of melts in vacuo) , simultaneously on an inclosed metallic strip, such as platinum, heated electrically, and upon which was placed

A review on photochemical effects of common plastics and their related applications

“…108 Irradiation of PE film with UV light in air can cause oxygen absorption, formation of carbonyl, hydroxyl, and alkenyl groups, release of acetone, acetaldehyde, carbon monoxide and carbon dioxide, increase of brittleness, crosslinking and deterioration of mechanical properties of polymers. 101,[109][110][111][112][113][114][115] For peroxide-crosslinked PE, the photooxidation rate was similar to that of uncrosslinked PE. 102 For γ-ray cross-linked PE, the photooxidation rate is higher than that of unirradiated LDPE.…”

“…The weatherability of commercial PE is closely related to the photooxidation reaction that occurs preferentially on the surface of the sample 108 . Irradiation of PE film with UV light in air can cause oxygen absorption, formation of carbonyl, hydroxyl, and alkenyl groups, release of acetone, acetaldehyde, carbon monoxide and carbon dioxide, increase of brittleness, crosslinking and deterioration of mechanical properties of polymers 101,109–115 . For peroxide‐crosslinked PE, the photooxidation rate was similar to that of uncrosslinked PE 102 .…”

In‐Depth Oxide Scale Growth Analysis of B and Ti Microalloyed AISI 304 in Oxygen‐Containing Furnace Atmospheres and CH4 Burn‐Simulating Furnace Atmospheres

“…The O 2 -containing atmosphere was selected to have 5% free oxygen in order to simulate the oxygen content in an industrial walking beam furnace. The H 2 O-containing atmosphere in this work is based on the atmosphere produced by burning CH 4 according to reaction in equation (1) in 20% excess air, assuming the complete combustion of CH 4 and where the air flow is 21% O 2 and 79% N 2 . The assumption of 20% excess air, based on the operation of an industrial-size walking beam furnace assuming having no CO form inside the furnace, having no latent CH 4 inside the furnace and not losing heating power to excess air.…”

“…In stainless steels, the usual approach in microalloying elements' use is to control precipitate formation (e.g., nitrides) and austenite grain properties. Boron's and titanium's usage through alloying or coating have long been studied for both steel and stainless steel; titanium's microalloying amount affects railroad steel segregation, [1] and boron's alloying affects the selfhardenability on steel, [2] both date to 1924. Older research on boron, focusing on the 1 to 5 wt% alloying effects of boron, uncovered boron's effects: the deposition of thin boron films improved dry sliding wear and the acid-caused corrosion of mild steel, [3] and increased austenitic stainless steel wear resistance due to boron ion implantation-induced martensite formation.…”

Electrical Measurement of Physical Values The Determination by Electrical and Magnetic Means of Quantities not in Themselves of an Electrical Nature

“…Recently, however, there seems to permanency required, upon the temperature range have been an awakening to the importance of accurate through which the couple may be carried, and upon temperature determination, with the result that there the possibility of corrosive effects in the atmosphere have appeared a large number of excellent temperature surrounding the thermo-junction. 5,6,7,8,9,10,11 measuring devices, giving not only rapid and accurate In one form of temperature-measuring instrument results, but making possible the reading and recording operating upon this principle, known as the radiation at. a central location of temperature at a large number pyrometer, developed by C. Fery, the junction is not of different points.…”