Abstract No.:	2862
Title:	Study of the effects of process parameters of powder flame spraying in the deposition of NiAl alloys coatings resistant at high temperatures.
Authors:	Émillyn Ferreira Trevisani / Universidade Federal do Paraná, Brasil Gustavo Bavaresco Sucharski / Universidade Federal do Paraná, Brasil Lucas Aguiar/ Universidade Federal do Paraná, Brasil Ramón Cortés Paredes/ Universidade Federal do Paraná, Brasil Hélio Padilha/ Universidade Federal do Paraná, Brasil André Capra/ Universidade Federal do Paraná, Brasil Marcos Cardozo Junior/ Universidade Federal do Paraná, Brasil
Abstract:	Thermal spray is used to produce coating, when there is a need to elevate the life of parts and systems and in some cases, may also recover them. To resist in certain conditions such as high temperature and mechanical stress is necessary to develop specific alloys to withstand the various conditions of service required. This article aims to study the variation of the procedures and parameters of deposition coatings resistant to high temperatures. Different mixtures of NiAl will be deposited using Powder Flame Spraying process, on substrates of AISI 304 austenitic steel. It was evaluated the influence of gas flow transport and pre and post heating of stainless substrate. The samples were submitted for tensile, hardness, adherence and wear tests. Preliminary results of the analysis obtained with the aid of microscopy showed high adhesion, low porosity and wear resistance at elevated temperatures.

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