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Title: A study of optimal laser parameters by anova method in laser surface alloyed NiTi with Mo
Authors: Ng, KW
Man, HC 
Yue, TM 
Issue Date: 2007
Source: 26th International Congress on Applications of Lasers and Electro-Optics, ICALEO 2007 - Congress Proceedings, 2007 How to cite?
Abstract: The present work investigates the influence of process parameters for laser surface alloying with molybdenum on Nickel Titanium, which is extensively used in medical devices industries. A systematic study of process parameters such as laser power, scanning velocity and pre-paste thickness upon the Mo concentration was carried out. Analysis of variance (ANOVA) was used to understand the significance of the process variables affecting the process factors. A functional relationship between the melt profile, structure and micro hardness was identified after a detailed analysis of the variables involved. Laser power and scan speed are found to be most significant process parameters influencing the melt depth. The weight % of Mo and of Ni are directly and inversely proportional to the dilution ratio (DR) respectively. A favorable hardness value can be achieved by an attainable Mo content. With a set of optimal parameters, Mo alloyed layer with hardness three times the substrate NiTi was achieved.
Description: 26th International Congress on Applications of Lasers and Electro-Optics, ICALEO 2007, Orlando, FL, 29 October-1 November 2007
ISBN: 9780912035888
Appears in Collections:Conference Paper

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