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Title: Validation of crystallographic correlation for faceted morphology in laser surface engineered alumina ceramic

Abstract

Surface modification of alumina ceramic using a high energy density continuous wave laser beam is associated with the formation of highly faceted pyramidal surface grains. Recently, we developed a phenomenological model explaining the faceted morphology by a fiber texture with a strong (1-210) component. Based on high resolution electron back-scattered diffraction, the present work proposes a more precise model showing that faceting of surface grains is closely linked with the evolution of a strong (2-310) fiber texture.

Authors:
 [1];  [1];  [2];  [2];  [2];  [1]
  1. ORNL
  2. Saarland University, Saarbrucken, Germany
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Laboratory Directed Research and Development (LDRD) Program; ORNL other overhead
OSTI Identifier:
931506
DOE Contract Number:
DE-AC05-00OR22725
Resource Type:
Journal Article
Resource Relation:
Journal Name: Scripta Materialia; Journal Volume: 57; Journal Issue: 5
Country of Publication:
United States
Language:
English

Citation Formats

Harimkar, Sandip P, Daniel, Claus, Holzapfel, Christian, Leibenguth, Peter, M�cklich, Frank, and Dahotre, Narendra B. Validation of crystallographic correlation for faceted morphology in laser surface engineered alumina ceramic. United States: N. p., 2007. Web. doi:10.1016/j.scriptamat.2007.05.008.
Harimkar, Sandip P, Daniel, Claus, Holzapfel, Christian, Leibenguth, Peter, M�cklich, Frank, & Dahotre, Narendra B. Validation of crystallographic correlation for faceted morphology in laser surface engineered alumina ceramic. United States. doi:10.1016/j.scriptamat.2007.05.008.
Harimkar, Sandip P, Daniel, Claus, Holzapfel, Christian, Leibenguth, Peter, M�cklich, Frank, and Dahotre, Narendra B. Mon . "Validation of crystallographic correlation for faceted morphology in laser surface engineered alumina ceramic". United States. doi:10.1016/j.scriptamat.2007.05.008.
@article{osti_931506,
title = {Validation of crystallographic correlation for faceted morphology in laser surface engineered alumina ceramic},
author = {Harimkar, Sandip P and Daniel, Claus and Holzapfel, Christian and Leibenguth, Peter and M�cklich, Frank and Dahotre, Narendra B},
abstractNote = {Surface modification of alumina ceramic using a high energy density continuous wave laser beam is associated with the formation of highly faceted pyramidal surface grains. Recently, we developed a phenomenological model explaining the faceted morphology by a fiber texture with a strong (1-210) component. Based on high resolution electron back-scattered diffraction, the present work proposes a more precise model showing that faceting of surface grains is closely linked with the evolution of a strong (2-310) fiber texture.},
doi = {10.1016/j.scriptamat.2007.05.008},
journal = {Scripta Materialia},
number = 5,
volume = 57,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}