Selection Criteria Parameter Thermal Cycle during Surfacing Heat Resistance High Hardness Parts of Metallurgical Equipment

Bacterial endospores (spores) are among the most resistant living forms on earth. Spores of Bacillus subtilis A163 show extremely high resistance to wet heat compared to spores of laboratory strains. In this study, we found that spores of B. subtilis A163 were indeed very wet heat resistant and released dipicolinic acid (DPA) very slowly during heat treatment. We also determined the proteome of vegetative cells and spores of B. subtilis A163 and the differences in these proteomes from those of the laboratory strain PY79, spores of which are much less heat resistant. This proteomic characterization identified 2011 proteins in spores and 1901 proteins in vegetative cells of B. subtilis A163. Surprisingly, spore morphogenic protein SpoVM had no homologs in B. subtilis A163. Comparing protein expression between these two strains uncovered 108 proteins that were differentially present in spores and 93 proteins differentially present in cells. In addition, five of the seven proteins on an operon in strain A163, which is thought to be primarily responsible for this strain’s spores high heat resistance, were also identified. These findings reveal proteomic differences of the two strains exhibiting different resistance to heat and form a basis for further mechanistic analysis of the high heat resistance of B. subtilis A163 spores.

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Study of localized deformation zones by nondestructive testing methods in structural and heat-resistant steels

10.1063/5.0036641 ◽

2020 ◽

Author(s):

N. V. Ababkov

Keyword(s):

Nondestructive Testing ◽

Testing Methods ◽

Localized Deformation ◽

Heat Resistant ◽

Nondestructive Testing Methods ◽

Heat Resistant Steels

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Thermodynamic Interactions in Hot Isostatic Pressed Graded Structures of Dissimilar Heat Resistant Steels

International Journal of Materials Research (formerly Zeitschrift fuer Metallkunde) ◽

10.1515/ijmr-1995-861211 ◽

1995 ◽

Vol 86 (12) ◽

pp. 864-869

Author(s):

Rainer Prader ◽

Bruno Buchmayr ◽

Horst Cerjak ◽

Alexander Fleming ◽

Jürgen Peterseim

Keyword(s):

Heat Resistant ◽

Heat Resistant Steels ◽

Graded Structures

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Steam Oxidation of Ferritic Heat-resistant Steels for Ultra Supercritical Boilers

Zairyo-to-Kankyo ◽

10.3323/jcorr1991.50.50 ◽

2001 ◽

Vol 50 (2) ◽

pp. 50-56 ◽

Cited By ~ 6

Author(s):

Yutaka Watanabe ◽

Yongsun Yi ◽

Tatsuo Kondo ◽

Koshi Suzuki ◽

Kimio Kano

Keyword(s):

Steam Oxidation ◽

Heat Resistant ◽

Heat Resistant Steels

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Damage Analysis of Heat Resistant Steels

Materials Science Forum ◽

10.4028/www.scientific.net/msf.537-538.303 ◽

2007 ◽

Vol 537-538 ◽

pp. 303-306

Author(s):

Tamás Bíró ◽

László Dévényi

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Optical Microscopy ◽

Damage Analysis ◽

Resistant Steel ◽

Heat Resistant Steel ◽

Advantages And Disadvantages ◽

Heat Resistant ◽

Heat Resistant Steels ◽

Scanning Electron

This paper shows the result of some metallographical examinations that have been carried out on low-alloyed Cr-Mo-V heat resistant steel. The aim of this research is to present and compare the advantages and disadvantages of the mainly applied metallographical methods. These techniques are optical microscopy, scanning electron microscopy, replica method and special applications of these methods. We have proved that using the investigated methods together gives much more information about the lifetime of the specimen than using these techniques particularly.

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