Article Abstract

	Title:	Influence of rare-earth La2O3 on the properties of laser cladding on 316L stainless steel coatings
	Author:	Qilin Deng, Anning Xie, Zhijun Ge, Jianli Song
	Address:	School of Mechanical and Power Engineering, Shanghai Jiaotong University, Shanghai, P.R.China. ' School of Mechanical and Power Engineering, Shanghai Jiaotong University, Shanghai, P.R.China. ' School of Mechanical and Power Engineering, Shanghai Jiaotong University, Shanghai, P.R.China. ' School of Mechanical and Power Engineering, Shanghai Jiaotong University, Shanghai, P.R.China
	Journal:	International Journal of Computer Applications in Technology 2007 - Vol. 29, No.2/3/4  pp. 125 - 129
	Abstract:	The ball valve is an important part of the blast furnace in Shanghai Baosteel. The damage to ball valves is mainly in the spheroids. Laser cladding is a very useful method of repairing the spheroid surface. In this paper, the influences of rare-earth La2O3 on the properties of laser cladding on 316L stainless steel coatings have been researched experimentally. From the researches, some results have been obtained. A certain content of rare-earth La2O3 can prominently fine and purify the organization of the coatings, suppress the growth of the columnar crystal and dendrite and reduce the interval of grains. Rare-earth La2O3 can raise the corrosion-resistant ability of the coatings. The rare-earth La2O3 has uniformed the performance of the coatings while improving the hardness of the coatings and the hardness distribution of the coatings tends to be even. The correct rare-earth La2O3 content can reduce and eliminate the micro crackles induced by laser cladding.
	Keywords:	laser cladding; ball valves; rare-earth La2O3; spheroids repairing; 316L stainless steel; stainless steel coatings; blast furnace; corrosion protection; hardness.
	DOI:	10.1504/IJCAT.2007.015247
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