Laser Sintering of Reconstituted Nanostructured PSZ Feedstock Powders

Abstract:

Reconstituted nanostructured partially stabilized zirconia (PSZ) feedstock powders were laser sintered under a range of laser processing parameters. Scanning electron microscopy (SEM) was applied to analyze the microstructure of the powders and sintered bulk. Microhardness of the samples was also tested by Vickers Microhardness tester. These results demonstrated that the microstructure of the samples exhibits a bimodal distribution which comprises molten and non-molten feedstock particles. It was found that feedstock maintained some of its nanostructure during laser sintering with relatively low laser power; whereas feedstock lost most of its initial characters with high laser power. It was also observed that Microhardness values have respect to the proportion of non-molten feedstock in those samples.

• Periodical: Applied Mechanics and Materials (Volumes 10-12)
• Pages: 855-859
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.10-12.855
• Online since: December 2007
• Authors: Li Da Shen, Zong Jun Tian, Y.H. Huang, Guo Ran Hua
• Keywords: Bimodal Distribution, Ceramic, Laser Sintering, Nanostructured Feedstock Powders, PSZ

References

[1] L.D. Shen, Y.H. Huang, Z.J. Tian and G.R. Hua: Key Engineering Materials Vol. 329 (2007), pp.613-618.

[2] R.S. Lima, A. Kucuk and C.C. Berndt: Mater. Science & Engineering A, Vol. 313 (2001), pp.75-78.

[3] M. Gell, E.H. Jordan, Y.H. Sohn, et al: Surface & Coatings Tech, Vol. 146-147 (2001), pp.48-54.

[4] P.R. Strutt, B.H. Kear, R.F. Roland: US Patent 6025034 (2000).

[5] R.S. Lima, A. Kucuk and C.C. Berndt: Mater. Science & Engineering A, Vol. 327 (2002), pp.224-232.

[6] R.S. Lima, B.R. Marple: Surface & Coatings Tech, Vol. 200 (2006), pp.3428-3437.

[7] B.R. Marple, J. Voyer, et al: J. of Mater. Processing Tech, Vol. 117 (2001), pp.418-423.

[8] R.S. Lima, B.R. Marple: Mater. Science & Engineering A, Vol. 395 (2005), pp.269-280.

[9] S. Jiansirisomboon, K.J.D. MacKenzie, et al: J. of the European Ceramic Society, Vol. 23 (2003), pp.961-976.

[10] G. Ji, T. Grosdidier, H.L. Liao, et al: Intermetallics, Vol. 13 (2005), pp.596-607.

[11] G. Skanda, R. Yao, B.H. Kear, et al: Scripta Materialia, Vol. 44 (2001), pp.1699-1702.

[12] H. Chen, S.W. Lee, H. Du, et al: Materials Letters, Vol. 58 (2004), pp.1241-1245.

[13] Y.C. Zhu, C.X. Ding: J. of the European Ceramic Society, Vol. 20 (2002), pp.127-132.

[14] L.D. Shen, Y.H. Huang, Z.J. Tian and G.R. Hua: Conference proceedings of MNC2007 (Sanya, China, January 10-13, 2007).

[15] G.R. Hua, Y.H. Huang, J.F. Zhao, et al: China Mechanical Engineering, Vol. 14 (2003), No. 20, pp.1766-1769. (In Chinese).

[16] G.R. Hua, X.H. Luo, J.F. Zhao, et al: China Mechanical Engineering, Vol. 15 (2004), No. 15, pp.1372-1374. (In Chinese).