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Materials and Manufacturing Processes Volume 29, 2014 - Issue 6
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Original Articles

Growth Characteristics of TiCxNy Ceramics under Laser Melting Conditions

W. J. Yao The Key Laboratory of Space Applied Physics and Chemistry, Ministry of Education, School of Science, Northwestern Polytechnical University, Xi'an, China; Engineering Research Center for Integrated Mechatronics Materials and Components, Changwon National University, Changwon, Korea
,
G. H. Bao The Key Laboratory of Space Applied Physics and Chemistry, Ministry of Education, School of Science, Northwestern Polytechnical University, Xi'an, China
,
X. L. Niu The Key Laboratory of Space Applied Physics and Chemistry, Ministry of Education, School of Science, Northwestern Polytechnical University, Xi'an, China
,
N. Wang The Key Laboratory of Space Applied Physics and Chemistry, Ministry of Education, School of Science, Northwestern Polytechnical University, Xi'an, China
&
J. H. Lee Engineering Research Center for Integrated Mechatronics Materials and Components, Changwon National University, Changwon, KoreaCorrespondence[email protected]; [email protected]
Pages 715-720 | Received 03 Oct 2013, Accepted 14 Mar 2014, Published online: 03 Jun 2014
 
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Abstract

By laser melting technique, TiCxNy ceramics are prepared under the laser powers of 300, 400, 500, 600, and 700 W, respectively. The size of molten pool decreases with the increase of scanning speed from 1 to 4 mm/s at a certain power. TiCxNy microstructure continuously changes from the top to bottom of molten pool. Based on the XRD spectrum, the composition of ceramic can be confirmed as Ti(O0.19C0.53N0.32), C0.7N0.3Ti, C2MoTi, and Ti8C5. Based on the analysis of the growth process, the growth conditions can be confirmed. The maximum depth of molten pool obtained at the laser energy density of 500 W/cm2. The more deviation from this value, the more shallow the pool. The corrosion experiment result shows that TiCxNy ceramic has good corrosion resistance to various corrosive agents except HNO3.

Notes

Color versions of one or more of the figures in the article can be found online at www.tandfonline.com/lmmp.

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