Results 241 to 250 of about 3,939,157 (310)

High-Temperature Oxidation

2016
High-temperature oxidation (HTO) of metals and alloys is a scale-forming oxidation process in gaseous environments. HTO is influenced by metal temperature, gas composition, exposure time, and pressure, and it may be characterized by weight gain, thickness reduction (penetration), and rate of oxide thickness growth, which is a measure of the rate of ...
openaire   +2 more sources

Optimizing high-temperature oxidation behaviors of high-Nb-containing TiAl alloys by addition of boron

, 2020
The influence of boron addition on oxidation behaviors of high-Nb-containing TiAl alloys was investigated using isothermal oxidation tests at 900 °C in air. The results indicated that boron addition refined the lamellar colony structure and significantly
Dongxu Li, Guoying Zhang, Gang Lu, Jianjun Wang, Chun-ming Liu   +4 more
semanticscholar   +1 more source

High-pressure and high-temperature studies on oxide garnets

Physical Review B, 1996
We report high-pressure and high-temperature studies on a series of oxide garnets of chemical composition ${A}_{3}{B}_{2}{C}_{3}{\mathrm{O}}_{12}$. The members of this family investigated are gadolinium scandium gallium garnet (GSGG), gadolinium gallium garnet (GGG), and yttrium aluminum garnet (YAG).
, Hua, , Mirov, , Vohra
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High temperature oxidation of Co-Mn alloys

Corrosion Science, 1979
Abstract The oxidation of cobalt-manganese alloys in the range 0–45 wt%Mn corresponding to the stability of the α-phase of cobalt has been studied in the range 750–950°C as an example of binary alloys producing solid solution scales. The alloys oxidize according to a parabolic rate law with a rate constant intermediate between those of the pure ...
F. Gesmundo, P. Nanni, D.P. Whittle
openaire   +1 more source

High-temperature oxidation behaviour of high chromium superalloys additively manufactured by conventional or extreme high-speed laser metal deposition

Corrosion Science, 2020
In this paper, the high-temperature oxidation behaviors at 900 °C of the conventional laser metal deposition (LMD) and extreme high-speed laser metal deposition (EHLMD) high chromium K648 superalloys were comprehensive studied.
Kaiming Wang, D. Du, Guanwei Liu, Ze Pu, B. Chang, J. Ju   +5 more
semanticscholar   +1 more source

The role of Nb on the high temperature oxidation behavior of CoCrFeMnNbxNi high-entropy alloys

Corrosion Science, 2019
The high temperature oxidation behavior of CoCrFeMnNb x Ni high-entropy alloys in air was studied. As-cast CoCrFeMnNb 0.25 Ni alloy is a duplex-phase structure of FCC plus Laves phase.
Dongzhou Huang, Jiasheng Lu, Y. Zhuang, Chunxu Tian, Yibo Li   +4 more
semanticscholar   +1 more source

High-Temperature Oxidation-Resistant ZrN0.4B0.6/SiC Nanohybrid for Enhanced Microwave Absorption.

ACS Applied Materials and Interfaces, 2019
Most microwave absorbers lose their function under harsh working conditions, such as a high temperature and an oxidative environment. Here, we developed a heterogeneous ZrN0.4B0.6/SiC nanohybrid via combined catalytic chemical vapor deposition (CCVD) and
Xian Jian, Wei Tian, Jinyao Li, L. Deng, Zuowan Zhou, Li Zhang, Haipeng Lu, L. Yin, N. Mahmood   +8 more
semanticscholar   +1 more source

Dimensionality of high temperature superconductivity in oxides

Physica Scripta, 1989
Many models have been proposed to account for the high temperature superconductivity observed in oxide systems. Almost all of these models proposed are based on the uncoupled low dimensional carrier Cu-O layers of the oxides. Results of several experiments are presented and discussed.
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The high-temperature oxidation of aldehydes

Symposium (International) on Combustion, 1971
Studies of the oxidation of aldehydes have given the velocity constants k1=0.013 and 0.076 liter mole−1 sec−1 for HCHO and C2H5CHO, respectively, and k4=1.36×106, 1.82×106, 2.41×106 liter mole−1 sec−1, for HCHO, C2H5CHO, and n-C3H7CHO, respectively, at 440°C, on the assumption that k5=1.8×109. These are preliminary values which may be modified slightly
R.R. Baldwin, D.H. Langford, M.J. Matchan, R.W. Walker, D.A. Yorke   +4 more
openaire   +1 more source

Effects of Al and Mo on high temperature oxidation behavior of refractory high entropy alloys

Transactions of Nonferrous Metals Society of China, 2019
Refractory high entropy alloys have superior mechanical properties at high temperatures, and the oxidation behavior of these alloys is very important. The present work investigated the high temperature oxidation behavior of three alloys with compositions
Yuankui Cao, Yong Liu, B. Liu, Wei-Dong Zhang, Jiawen Wang, D. Meng   +5 more
semanticscholar   +1 more source