scholarly journals ON THE 1% CHROMIUM-MOLYBDENUM STEEL CONTAINING PHOSPHORUS AS THE CONSTRUCTIONAL MATERIAL FOR HIGH-TEMPERATURE AND HIGH-PRESSURE CHEMICAL INDUSTRIES

1942 ◽  
Vol 28 (2) ◽  
pp. 137-148
Author(s):  
Satio Okura
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Constructional Material ◽  
Molybdenum Steel ◽  
Pressure Chemical

Creep Properties of Steels Utilized in High-Pressure and High-Temperature Superheater and Steam Pipe Practice. Part I: Carbon Steels

1944 ◽  
Vol 151 (1) ◽  
pp. 54-62 ◽  
Author(s):  
H. J. Tapsell
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Carbon Steels ◽  
Creep Properties ◽  
Molybdenum Steel ◽  
Steam Pipe ◽  
Steam Pipes ◽  
Sufficient Precision ◽  
Creep Strains

This report deals with the creep properties of carbon steels used in superheater headers, superheater tubes, and steam pipes for service at temperatures up to about 480 deg. C. The object of the investigation was to obtain data for the estimation of the stress-temperature relationships for specific creep strains of 0·1–0·5 per cent to occur in 100,000 hours, and these have been obtained with sufficient precision to warrant their acceptance for practical purposes. Similar components in molybdenum steel are under investigation.

A Continuous-Flow Microwave Reactor for Conducting High-Temperature and High-Pressure Chemical Reactions

2013 ◽  
Vol 18 (11) ◽  
pp. 1310-1314 ◽  
Author(s):  
Jennifer M. Sauks ◽  
Debasis Mallik ◽  
Yuri Lawryshyn ◽  
Timothy Bender ◽  
Michael Organ
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Chemical Reactions ◽  
Continuous Flow ◽  
Microwave Reactor ◽  
Pressure Chemical

scholarly journals Whole ceramic-like microreactors from inorganic polymers for high temperature or/and high pressure chemical syntheses

Lab on a Chip ◽  
2014 ◽  
Vol 14 (4) ◽  
pp. 779-786 ◽  
Author(s):  
Wurong Ren ◽  
Jayakumar Perumal ◽  
Jun Wang ◽  
Hao Wang ◽  
Siddharth Sharma ◽  
...  
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Organic Polymer ◽  
Inorganic Polymers ◽  
Pressure Chemical

Whole ceramic-like microreactors fabricated from inorganic polymers could outperform any organic polymer derived reactors under challenging conditions.

One-step synthesis of type-I silicon clathrate Ba8Si46 under high pressure and high temperature

2015 ◽  
Vol 29 (33) ◽  
pp. 1550214 ◽  
Author(s):  
Bing Sun ◽  
Xiaopeng Jia ◽  
Dexuan Huo ◽  
Xin Guo ◽  
Hairui Sun ◽  
...  
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Chemical Method ◽  
Low Cost ◽  
Type I ◽  
Silicon Clathrate ◽  
Pressure Chemical ◽  
One Step ◽  
Preparation Route ◽  
Short Time

In this paper, the silicon clathrate [Formula: see text] was successfully synthesized using low-cost antioxidative azide [Formula: see text] and Si as precursors by means of high pressure and high temperature (HPHT). The clathrate phase was one-step synthesized by high pressure chemical method within a short time. The reaction temperature and pressure were optimized to achieve good-quality crystalline products with a composition of [Formula: see text] and its transition temperature [Formula: see text] is about 8.3 K. The new preparation route presented in this paper provides an alternative to the multistep HPHT synthesis applied so far. One-step synthesis of type-I silicon clathrate [Formula: see text] by high pressure chemical method can shorten the synthesis period of time greatly.

Microstructural Study of Diamond Deformed Under High Pressure and Temperature

1985 ◽  
Vol 43 ◽  
pp. 230-231
Author(s):  
E. F. Koch
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Lattice Structure ◽  
Diamond Particle ◽  
Polycrystalline Diamond ◽  
Sintering Process ◽  
Ion Milling ◽  
Sintered Compact ◽  
Transmission Electron ◽  
High Pressure Sintering

Because of the extremely rigid lattice structure of diamond, generating new dislocations or moving existing dislocations in diamond by applying mechanical stress at ambient temperature is very difficult. Analysis of portions of diamonds deformed under bending stress at elevated temperature has shown that diamond deforms plastically under suitable conditions and that its primary slip systems are on the ﹛111﹜ planes. Plastic deformation in diamond is more commonly observed during the high temperature - high pressure sintering process used to make diamond compacts. The pressure and temperature conditions in the sintering presses are sufficiently high that many diamond grains in the sintered compact show deformed microtructures.In this report commercially available polycrystalline diamond discs for rock cutting applications were analyzed to study the deformation substructures in the diamond grains using transmission electron microscopy. An individual diamond particle can be plastically deformed in a high pressure apparatus at high temperature, but it is nearly impossible to prepare such a particle for TEM observation, since any medium in which the diamond is mounted wears away faster than the diamond during ion milling and the diamond is lost.

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