Effect of surface preparation on the quality of components after low-temperature carbonitriding

1984 ◽  
Vol 26 (5) ◽  
pp. 354-356
Author(s):  
V. B. Fridman ◽  
T. V. Egorshina ◽  
T. I. Kirpicheva ◽  
E. E. Chesalova
Keyword(s):  
Low Temperature ◽  
Surface Preparation ◽  
Effect Of Surface

Effect of surface preparation and interfacial layer on the quality of SiO2/GaN interfaces

2011 ◽  
Vol 109 (8) ◽  
pp. 084511 ◽  
Author(s):  
E. Al Alam ◽  
I. Cortés ◽  
M.-P. Besland ◽  
A. Goullet ◽  
L. Lajaunie ◽  
...  
Keyword(s):  
Interfacial Layer ◽  
Surface Preparation ◽  
Effect Of Surface

MOCVD Growth of GaN on bulk AlN Substrates

1997 ◽  
Vol 482 ◽  
Author(s):  
Hong-Qiang Lu ◽  
Ishwara B. Bhat ◽  
Byung-Chan Lee ◽  
Glen A. Slack ◽  
Leo J. Schowalter
Keyword(s):  
Low Temperature ◽  
Preparation Method ◽  
Surface Preparation ◽  
The Other ◽  
Substrate Orientation ◽  
Exciton Emission ◽  
Plane Orientation ◽  
Mocvd Growth ◽  
Polishing Damage

AbstractIn this paper, the growth of epitaxial GaN layers on c-plane and a-plane bulk AIN substrates by metalorganic vapor phase epitaxy is reported. The AlN boules were grown by the sublimationrecondensation technique. Single crystal GaN films grown on the c-plane orientation replicate the substrate orientation. However the surface of the epilayer had a high density of cross-hatch defect lines, presumably caused by mechanical polishing damage. The low temperature PL spectra of these films were dominated by exciton emission at 3.470 eV with a FWHM of 14 meV at 7 K. On the other hand, GaN grown on the a-plane orientation AlN was polycrystalline and the surface was rough with ridge-like facets. The PL from this film showed a dominate peak at 3.406 eV which may originate from defect-bound excitons. The quality of the GaN layers grown on these AIN bulk substrates appeared to be limited by the surface preparation method, which has not been optimized.

The Effect of Surface Preparation on Surface Damage and Sigma Formation in Duplex Stainless Steel

2018 ◽  
Vol 941 ◽  
pp. 432-437
Author(s):  
Rebecca L. Higginson ◽  
Michael Cenci ◽  
Matthew Rowlett ◽  
Vladislav Kornienko ◽  
Mark A.E. Jepson
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Low Temperature ◽  
Surface Finish ◽  
Stainless Steels ◽  
Surface Preparation ◽  
Surface Region ◽  
Surface Damage ◽  
Nucleation And Growth ◽  
Effect Of Surface

Sigma formation in duplex stainless steels is known to be detrimental to the mechanical properties of the material and limits the alloys to low temperature applications. In this paper, the surface damage caused by grinding on different grit sizes or polishing, is assessed using EBSD. The surface finish is then related to the depth of sigma formation in the surface region with a quantification of how the surface finish effects the sigma nucleation and growth. Finally, the effect of surface finish and sigma formation on the oxidation characteristics of the material is considered.

Effect of surface preparation of ABM-1 alloy on properties of glued joints

2009 ◽  
Vol 2 (2) ◽  
pp. 124-126
Author(s):  
L. I. Anikhovskaya ◽  
V. S. Kas’kov ◽  
E. A. Kuznetsova ◽  
L. P. Kozlova
Keyword(s):  
Surface Preparation ◽  
Glued Joints ◽  
Effect Of Surface

scholarly journals X-ray diffraction analysis of kaolin M1 and M2 via the Williamson–Hall and Warren–Averbach methods

2021 ◽  
pp. 174751982098472
Author(s):  
Lalmi Khier ◽  
Lakel Abdelghani ◽  
Belahssen Okba ◽  
Djamel Maouche ◽  
Lakel Said
Keyword(s):  
Grain Size ◽  
High Temperature ◽  
Low Temperature ◽  
Diffraction Analysis ◽  
Mechanical Resistance ◽  
X Ray Diffraction ◽  
Integral Breadth ◽  
X Ray ◽  
Mullite Phase

Kaolin M1 and M2 studied by X-ray diffraction focus on the mullite phase, which is the main phase present in both products. The Williamson–Hall and Warren–Averbach methods for determining the crystallite size and microstrains of integral breadth β are calculated by the FullProf program. The integral breadth ( β) is a mixture resulting from the microstrains and size effect, so this should be taken into account during the calculation. The Williamson–Hall chart determines whether the sample is affected by grain size or microstrain. It appears very clearly that the principal phase of the various sintered kaolins, mullite, is free from internal microstrains. It is the case of the mixtures fritted at low temperature (1200 °C) during 1 h and also the case of the mixtures of the type chamotte cooks with 1350 °C during very long times (several weeks). This result is very significant as it gives an element of explanation to a very significant quality of mullite: its mechanical resistance during uses at high temperature remains.

Rootstock effect on serotonin and nutritional quality of tomatoes produced under low temperature and light conditions

2016 ◽  
Vol 46 ◽  
pp. 50-59 ◽  
Author(s):  
Patrick Riga ◽  
Leyre Benedicto ◽  
Libia García-Flores ◽  
Débora Villaño ◽  
Sonia Medina ◽  
...  
Keyword(s):  
Low Temperature ◽  
Nutritional Quality ◽  
Light Conditions

Durability of Enamel Bonding Using Two-step Self-etch Systems on Ground and Unground Enamel

10.2341/07-42 ◽  
2008 ◽  
Vol 33 (1) ◽  
pp. 79-88 ◽  
Author(s):  
A. D. Loguercio ◽  
S. K. Moura ◽  
A. Pellizzaro ◽  
K. Dal-Bianco ◽  
R. T. Patzlaff ◽  
...  
Keyword(s):  
Bond Strength ◽  
Clinical Relevance ◽  
Water Storage ◽  
Surface Preparation ◽  
The Self ◽  
Self Etch ◽  
Effect Of Surface

Clinical Relevance The effect of surface preparation was adhesive-dependent. Improvements in resin-enamel bond strength after enamel preparation were observed only for AdheSE and Optibond Solo plus Self-Etch Primer. Among the self-etch systems, mild, self-etch Clearfil SE Bond showed the highest bond strength values. No degradation of resin-enamel bonds was observed after 12 months of water storage, regardless of the adhesive tested.

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