The Study of the Impact of Surface Preparation Methods of Inconel 625 and 718 Nickel-Base Alloys on Wettability by BNi-2 and BNi-3 Brazing Filler Metals

Archives of Metallurgy and Materials

Baranowski M.¹  Babul T.¹  Lankiewicz K.¹  Kowalski S.¹ 

[1] INSTITUTE OF PRECISION MECHANICS, DUCHNICKA 3 STR., 01-796 WARSAW, POLAND;

关键词: Vacuum brazing;    Surface wetting;    Inconel 625 and 718;    BNi-2 and BNi-3 brazing filler metals;   

DOI  :  10.1515/amm-2015-0025

来源: DOAJ

【 摘 要 】

The article discusses the impact of surface preparation method of Inconel 625 and 718 nickel-base alloys in the form of sheets on wettability of the surface. The results of the investigations of surface preparation method (such as nicro-blasting, nickel plating, etching, degreasing, abrasive blasting with grit 120 and 220 and manually grinding with grit 120 and 240) on spreading of BNi-2 and BNi-3 brazing filler metals, widely used in the aerospace industry in high temperature vacuum brazing processes, are presented. Technological parameters of vacuum brazing process are shown. The macro- and microscopic analysis have shown that nicro-blasting does not bring any benefits of wettability of the alloys investigated.

【 授权许可】

Unknown